Providers Nancy Gryniewicz, M.D. to Meghan Grzetich, LMFT
300 individual NPIs in the federal registry, part 8,415 of 24,427 of the A to Z by surname. Each row is the registry's record: the name and credential, the NPI, the primary specialty, the practice city and the year the NPI was issued. 113 link to a page of their own with Medicare and CMS data the registry does not carry.
| Provider | NPI | Specialty | Practice city | NPI issued |
|---|---|---|---|---|
| Nancy Gryniewicz, M.D. | 1558368043 | Family Medicine Physician | Oak Park, IL | 2005 |
| Steven Gryniewicz, M.D. | 1457386153 | Diagnostic Radiology Physician | Milwaukee, WI | 2006 |
| William Gryniewicz, PA-C | 1962488866 | Physician Assistant | Cleveland, OH | 2005 |
| Eva Gryniewski, M.AC, L.AC | 1982895777 | Acupuncturist | Seattle, WA | 2007 |
| Matthew Gryniewski-Peirson, LP | 1487902482 | Clinical Psychologist | New Brighton, MN | 2012 |
| Marta Gryniuk, MD | 1538164595 | Internal Medicine Physician | Washington Court House, OH | 2005 |
| Ronda Gryniuk, SLP-CCC | 1689862161 | Speech-Language Pathologist | Las Cruces, NM | 2007 |
| Bogdana Gryniv | 1720625593 | Nurse Practitioner | Chicago, IL | 2019 |
| Ashley Grynkiewicz, LCPC | 1639519085 | Mental Health Counselor | Baltimore, MD | 2013 |
| Erica Grynovicki, PA-C | 1861727976 | Physician Assistant | Baltimore, MD | 2009 |
| Melanie Grynsztejn, PMHNP-BC | 1033744677 | Nurse Practitioner | Cincinnati, OH | 2020 |
| Michael Grynsztejn | 1679623151 | Anesthesiology Physician | Houston, TX | 2007 |
| Andrea Gryntysz | 1821241852 | Pediatric Occupational Therapist | North Massapequa, NY | 2008 |
| Ana Grynwald, ARNP | 1780649228 | Family Nurse Practitioner | Louisville, KY | 2006 |
| Jeffrey Grynwald, MD | 1255446191 | Surgery of the Hand (Surgery) Physician | Little Rock, AR | 2006 |
| Bogdan Grynyk | 1720574759 | Optometrist | Carrollwood, FL | 2018 |
| Ivanna Grynyk, OD | 1194391243 | Optometrist | Plattsburgh, NY | 2021 |
| Ivan Grynyshin, MD | 1124000369 | Anesthesiology Physician | Pottsville, PA | 2005 |
| Katerina Grynyshin, DO | 1609495506 | Anesthesiology Physician | Harrisburg, PA | 2020 |
| Evangelia Gryparis, PA-C | 1316637770 | Physician Assistant | Encinitas, CA | 2023 |
| Aera Gryphon | 1154833382 | Case Manager/Care Coordinator | Akron, OH | 2017 |
| Florence Grypinich, MD | 1275382061 | Family Medicine Physician | Wayne, MI | 2024 |
| Lydia Grypma, MD | 1235206160 | Occupational Medicine Physician | San Diego, CA | 2006 |
| Christina Grys | 1326688722 | Behavior Technician | Farmington Hills, MI | 2020 |
| Elizabeth Grys, DDS, MS | 1023166212 | General Practice Dentistry | Chicago, IL | 2007 |
| Jolanta Grys | 1083062202 | Pharmacist | Algonquin, IL | 2016 |
| Lindsey Grys, APN | 1649825514 | Nurse Practitioner | Peoria, IL | 2019 |
| Tyler Grys | 1326899790 | Counselor | Buffalo, NY | 2024 |
| Julie Grysavage, PA-C | 1285154393 | Physician Assistant | Alexandria, VA | 2017 |
| Courtney Grysen | 1710548813 | Speech-Language Pathologist | Hudsonville, MI | 2019 |
| Kaylynn Grysen, FNP-C | 1801519566 | Nurse Practitioner | Austin, TX | 2022 |
| Lisa Grysen, MD | 1639350820 | Pediatrics Physician | Dallas, TX | 2007 |
| Anatoliy Gryshchenko, IDHS | 1881358851 | Independent Duty Corpsman | Portsmouth, VA | 2021 |
| Rebbeca Grysiewicz, D.O. | 1982852794 | Neurology Physician | Royal Oak, MI | 2008 |
| Jennifer Gryska, M.A. CCC-A | 1841326659 | Audiologist | San Diego, CA | 2007 |
| Paul Gryska, MD | 1568468700 | Surgery Physician | Newton, MA | 2005 |
| Hailey Gryske, MS, BCBA | 1730646902 | Behavior Analyst | Raleigh, NC | 2019 |
| Jill Gryskevicz | 1316060809 | Occupational Therapist | Erie, PA | 2007 |
| Lisa Gryskevicz, OTRL | 1366640625 | Occupational Therapist | Hazleton, PA | 2007 |
| Joanne Gryski, PT | 1538362868 | Physical Therapist | Centreville, VA | 2007 |
| Linda Gryski | 1841066024 | Speech-Language Pathologist | Golden, CO | 2023 |
| Alexandra Gryskiewicz | 1255272589 | School Social Worker | Saint Paul, MN | 2026 |
| Ashley Gryskiewicz, LICSW | 1750082202 | Clinical Social Worker | Saint Paul, MN | 2023 |
| Ashley Gryskiewicz, M.S.C.C.C.-S.L.P. | 1861607731 | Speech-Language Pathologist | Seven Fields, PA | 2007 |
| Joseph Gryskiewicz, M.D. | 1346358231 | Specialist | Burnsville, MN | 2006 |
| Bethany Grysko, MS, CGC | 1174275846 | Genetic Counselor (M.S.) | Grand Rapids, MI | 2022 |
| Gabriella Grysko, LMSW | 1275918567 | Clinical Social Worker | Cleveland, OH | 2015 |
| Bailey Gryskwicz, DMD | 1801786819 | Dentist | Dover, NH | 2025 |
| Shannon Gryskwicz | 1780001735 | Denturist | Kennebunk, ME | 2014 |
| Benjamin Grysman, PHD | 1841549128 | Clinical Psychologist | Flushing, NY | 2012 |
| Irene Grysman, NP | 1174652333 | Gerontology Nurse Practitioner | Flushing, NY | 2007 |
| Noam Grysman, MD | 1619498557 | Geriatric Psychiatry Physician | Saint Louis, MO | 2017 |
| Caterina Gryspeerd | 1043943079 | Behavior Technician | Chesterfield, MI | 2022 |
| John Gryspeerdt, MD | 1245310838 | Family Medicine Physician | Batesville, IN | 2006 |
| Richard Gryspeerdt, DO | 1245734680 | Family Medicine Physician | Batesville, IN | 2018 |
| Ava Grysson, CST | 1588467260 | Surgical Technologist | Norwalk, CA | 2025 |
| Diana Gryszkiewicz, LPC | 1477333292 | Professional Counselor | Groton, CT | 2023 |
| Grace Gryszkiewicz | 1245417674 | Licensed Vocational Nurse | Anaheim, CA | 2008 |
| Lori Gryszkiewicz, OT | 1356772818 | Occupational Therapist | Menomonee Falls, WI | 2013 |
| Tiffany Gryszko | 1174369482 | Dentist | Wesley Chapel, FL | 2024 |
| Christian Gryszowka, OTD, MS, OTR/L, CHT | 1659855724 | Occupational Therapist | Fort Drum, NY | 2018 |
| Nicole Gryszowka | 1164101630 | Behavior Technician | Springfield, MA | 2023 |
| Victoria Gryszowka, M.D. | 1992971006 | Anesthesiology Physician | Bloomington, IN | 2008 |
| Rachel Gryta, D.O. | 1306032685 | Anesthesiology Physician | Pittsburgh, PA | 2007 |
| Brittany Grytdahl, PA-C | 1487063442 | Surgical Physician Assistant | Mount Vernon, WA | 2014 |
| Clifford Gryte, MD | 1265421549 | Anatomic Pathology & Clinical Pathology Physician | Ames, IA | 2005 |
| Crystal Gryte, RDH | 1992974430 | Dental Hygienist | Fresno, CA | 2008 |
| John Gryte, MD | 1356310817 | Family Medicine Physician | Coon Rapids, MN | 2006 |
| Kenneth Gryte, MS, LPC | 1316076375 | Professional Counselor | Albany, OR | 2007 |
| Marilyn Gryte, LPC | 1306828637 | Counselor | Albany, OR | 2005 |
| Kateryna Grytsenko, DDS | 1063890309 | General Practice Dentistry | Sarasota, FL | 2015 |
| Iryna Grytsulyak, CRNA | 1891103198 | Certified Registered Nurse Anesthetist | Philadelphia, PA | 2014 |
| Anzhela Grytsyna | 1356839492 | Social Worker | Chelmsford, MA | 2018 |
| Lisa Gryttenholm, PHARMD. | 1437222551 | Pharmacist | Madison, WI | 2006 |
| Catherine Grytting, ED.D. | 1447621883 | Counselor | Seattle, WA | 2015 |
| Derek Grytzelius, D.D.S. | 1457555823 | General Practice Dentistry | Sterling Heights, MI | 2007 |
| Max Grytzelius, D.D.S. | 1043598931 | Dentist | Sterling Heights, MI | 2011 |
| Anna Gryunshpan, FNP | 1033810171 | Nurse Practitioner | Tarzana, CA | 2023 |
| Mariya Gryunshpan | 1255763736 | Behavior Analyst | Valencia, CA | 2013 |
| Cynthia Grywalski, M.A., CCC-SLP | 1215430558 | Speech-Language Pathologist | Detroit, MI | 2018 |
| Korinna Grywalski, PTA | 1699590653 | Physical Therapy Assistant | North Canton, OH | 2024 |
| Maria Grywalski, FNP-BC | 1063986180 | Family Nurse Practitioner | Long Beach, CA | 2019 |
| Mary Ellen Grywalski, RPH | 1831471838 | Pharmacist | Columbus, OH | 2011 |
| Melissa Grywalski | 1720746886 | Doula | Bayonne, NJ | 2021 |
| Nicole Grywalski, LCSW | 1285282467 | Clinical Social Worker | Norwalk, CT | 2019 |
| Paul Grywalski | 1356052997 | Case Manager/Care Coordinator | Wooster, OH | 2022 |
| Regina Grywalski, OT | 1003026931 | Pediatric Occupational Therapist | Powell, OH | 2007 |
| Angela Grywalsky, BA, LSW | 1871744094 | Clinical Social Worker | Wooster, OH | 2008 |
| Samantha Grywalsky | 1346992054 | Behavior Technician | Bay City, MI | 2022 |
| Laura Grywczynski | 1487505764 | Behavior Technician | San Diego, CA | 2026 |
| Terrence Grywinski, LICENSED MASSAGE THE | 1851067599 | Mechanotherapist | Sarasota, FL | 2021 |
| Leanna Gryz, PHARMD | 1164021614 | Pharmacist | Chicago, IL | 2020 |
| Stephen Gryzan, MD | 1467402941 | Pulmonary Disease Physician | Saint Paul, MN | 2006 |
| Angela Gryzbek, M.S.N. | 1144616327 | Nurse Practitioner | Warrenville, IL | 2015 |
| Joseph Gryzbek, PSY.D. | 1538513213 | Psychologist | Naperville, IL | 2016 |
| Yasmin Gryzelko | 1184514507 | Student in an Organized Health Care Education/Training Program | Carson, CA | 2025 |
| Helena Gryzenia | 1497515241 | Occupational Therapist | Salt Lake City, UT | 2024 |
| Lucinda Gryzenia, NP | 1356156269 | Gerontology Nurse Practitioner | Chicago, IL | 2025 |
| Paul Gryzenia, MD | 1255325262 | Vascular & Interventional Radiology Physician | Troy, MI | 2005 |
| David Gryzick | 1366511461 | Dentist | Aurora, CO | 2006 |
| Angela Gryziec | 1285930289 | Specialist | Dunmore, PA | 2011 |
| Karsten Gryziec, LAC, CMT | 1114171865 | Acupuncturist | San Francisco, CA | 2008 |
| Nicole Gryzik, AU.D. | 1417658949 | Audiologist | Raleigh, NC | 2023 |
| Olyvia Gryzik, OTD, OTR/L | 1114739208 | Occupational Therapist | Glenview, IL | 2025 |
| Gustavo Gryzinski, MD | 1346982592 | Student in an Organized Health Care Education/Training Program | Orange, CA | 2022 |
| Kimberly Gryzkewicz, COTA | 1417461740 | Occupational Therapy Assistant | Laona, WI | 2017 |
| Daniel Gryzlo, MD | 1346723616 | Gastroenterology Physician | Maywood, IL | 2018 |
| Grace Gryzlo, MSN | 1316463524 | Pediatric Nurse Practitioner | Saint Louis, MO | 2017 |
| Matthew Gryzlo, COTA | 1417735788 | Occupational Therapy Assistant | Phillipsburg, NJ | 2023 |
| Matthew Gryzlo, DDS | 1821154857 | General Practice Dentistry | Bloomingdale, IL | 2006 |
| Stephen Gryzlo, MD | 1588690911 | Orthopaedic Surgery Physician | Chicago, IL | 2006 |
| Amanda Gryzmala, LCSW | 1871152660 | Clinical Social Worker | Fort Campbell, KY | 2019 |
| Catherine Gryzmala, CRNA | 1548237514 | Certified Registered Nurse Anesthetist | Minneapolis, MN | 2006 |
| Stephanie Gryzmala, PHARMD | 1457785966 | Pharmacist | Houston, TX | 2013 |
| Susan Gryzmala | 1023975075 | Nurse Practitioner | Saint Louis, MO | 2026 |
| Richard Gryzmolowicz, D.D.S. | 1942426606 | General Practice Dentistry | Totowa, NJ | 2007 |
| Barbara Grzaba-Gracz, MD | 1366557316 | Internal Medicine Physician | Milwaukee, WI | 2006 |
| Jessica Grzado, LMFT | 1770048167 | Marriage & Family Therapist | Southington, CT | 2019 |
| Joanna Grzadziel, DO | 1073900270 | Family Medicine Physician | Leesport, PA | 2015 |
| Amanda Grzadzielewski | 1447998703 | Rehabilitation Counselor | Crookston, MN | 2022 |
| Nancy Grzadzielewski | 1831634898 | Counselor | Everett, WA | 2016 |
| Pamela Grzadzielewski, OT, CHT | 1265931646 | Occupational Therapist | Martinsburg, WV | 2018 |
| Christina Grzadzinski, PCR | 1053899906 | Attendant Care Provider | Roseville, MI | 2018 |
| Rebecca Grzadzinski, PHD | 1871258392 | Clinical Psychologist | Carrboro, NC | 2021 |
| Richelle Grzadzinski, RN | 1447054853 | Addiction (Substance Use Disorder) Registered Nurse | Soldotna, AK | 2025 |
| Elizabeth Grzan, LSW | 1477289460 | Social Worker | Geneva, IL | 2022 |
| Marko Grzan, DPT | 1275193856 | Physical Medicine & Rehabilitation Physician | Sleepy Hollow, NY | 2019 |
| Tiffany Grzan, M.P.T. | 1609998012 | Physical Therapist | Kennesaw, GA | 2007 |
| Derek Grzanich, DDS | 1487736112 | Endodontics | Peoria, IL | 2006 |
| Jared Grzanich, P.A.-C | 1093984551 | Physician Assistant | Canton, IL | 2008 |
| Elizabeth Grzanke, LPN | 1801232897 | Licensed Practical Nurse | Trenton, OH | 2013 |
| Donald Grzankowski, OD | 1851371298 | Optometrist | Olean, NY | 2006 |
| Edwin Grzankowski, D.C. | 1679604490 | Chiropractor | Buffalo, NY | 2007 |
| Elaine Grzankowski, L.M.T. | 1861513160 | Specialist | Williamsville, NY | 2007 |
| Julie Grzankowski, M.D. | 1427410075 | Hospitalist Physician | Middletown, NY | 2016 |
| Kassondra Grzankowski, M.D. | 1316109648 | Gynecologic Oncology Physician | San Antonio, TX | 2008 |
| Elizabeth Grzebielski | 1124437215 | Other Technician | Omaha, NE | 2014 |
| Patricia Grzebielski, M.D. | 1831517010 | Obstetrics & Gynecology Physician | Madison, WI | 2014 |
| Jerzy Grzebieluch, MD | 1740397025 | Psychiatry Physician | Fort Walton Beach, FL | 2006 |
| Allison Grzebien, CNM | 1942037361 | Advanced Practice Midwife | Hammond, IN | 2024 |
| Jessica Grzebien, CRNA | 1194361014 | Certified Registered Nurse Anesthetist | Attleboro, MA | 2019 |
| Anna Grzebieniak | 1588085997 | Psychiatric/Mental Health Nurse Practitioner | Beachwood, OH | 2014 |
| John Grzebieniak, PH.D. | 1437150968 | Addiction (Substance Use Disorder) Psychologist | New Castle, PA | 2005 |
| Theresa Grzebinski, LCSW | 1285349373 | Clinical Social Worker | Frisco, TX | 2023 |
| Christopher Grzebyk | 1336869031 | Independent Duty Corpsman | Camp Lejeune, NC | 2022 |
| Izabela Grzebyk, CCC-SLP | 1023707320 | Speech-Language Pathologist | Englishtown, NJ | 2023 |
| Jessica Grzeca, AUD | 1982616686 | Audiologist | Neenah, WI | 2006 |
| Albert Grzech, DDS | 1598969511 | Dentist | Glen Burnie, MD | 2007 |
| Andrea Grzech | 1437856788 | Occupational Therapy Assistant | Palm Beach Gardens, FL | 2023 |
| Courtney Grzech, RD | 1801287271 | Registered Dietitian | Bethlehem, PA | 2015 |
| Diane Grzech, LMSW | 1508195900 | Clinical Social Worker | Southfield, MI | 2009 |
| James Grzech, FNP | 1275680704 | Family Nurse Practitioner | Florence, SC | 2007 |
| Joseph Grzech | 1902472004 | Physical Therapist | Dallas, PA | 2021 |
| Kayla Grzech, LMSW, LCSW | 1487136529 | Clinical Social Worker | Grand Rapids, MI | 2018 |
| Pamela Grzech, LMSW | 1144840752 | Clinical Social Worker | Traverse City, MI | 2020 |
| Sirena Grzech | 1932905551 | Behavior Technician | Marysville, MI | 2025 |
| Austin Grzechowiak | 1104756006 | Student in an Organized Health Care Education/Training Program | Stony Brook, NY | 2026 |
| Chelsea Grzechowiak, MSW | 1114446663 | Social Worker | Pembroke Pines, FL | 2017 |
| Jeffery Grzechowiak | 1770791071 | Physical Therapy Assistant | Concord, CA | 2007 |
| John Grzechowiak, APN | 1477257095 | Nurse Practitioner | Clementon, NJ | 2023 |
| Pamela Grzechowiak | 1245580398 | Counselor | North Collins, NY | 2012 |
| Cathleen Grzeczka, LMT | 1861036212 | Massage Therapist | Hyde Park, NY | 2019 |
| Gary Grzeczka | 1376861666 | Pharmacist | Pittsburgh, PA | 2010 |
| Jillian Grzeczka | 1932446804 | Specialist | Staten Island, NY | 2013 |
| Crystal Grzeczkowski | 1851854467 | Primary Care Nurse Practitioner | Paoli, PA | 2019 |
| Anthony Grzeda, MD | 1356845838 | Vascular Surgery Physician | Louisville, KY | 2018 |
| Tatiana Grzeda, APRN | 1609761261 | Psychiatric/Mental Health Nurse Practitioner | Las Vegas, NV | 2025 |
| Andrea Grzedzinski | 1952128340 | Behavior Analyst | Seymour, CT | 2024 |
| Anne Grzegorczyk, M.D. | 1720434004 | Pulmonary Disease Physician | Walnut Creek, CA | 2016 |
| Barbara Grzegorczyk, MD | 1922482413 | Family Medicine Physician | Grand Rapids, MI | 2015 |
| Crislyn Grzegorczyk | 1649822594 | Behavior Technician | Grand Rapids, MI | 2019 |
| Ethan Grzegorczyk | 1942890918 | Behavior Technician | Saginaw, MI | 2021 |
| Gayla Grzegorczyk, MA, CCC-SLP | 1245940774 | Speech-Language Pathologist | Colorado Springs, CO | 2022 |
| Grayson Grzegorczyk, DPT | 1316451776 | Physical Therapist | Olympia, WA | 2017 |
| Jennifer Grzegorczyk, LLMSW | 1548582323 | Clinical Social Worker | Portage, MI | 2010 |
| Jillian Grzegorczyk, RN | 1942789805 | Family Nurse Practitioner | Muskegon, MI | 2018 |
| Jordan Grzegorczyk | 1598288094 | Physical Therapist | Grand Rapids, MI | 2017 |
| Katarzyna Grzegorczyk, L.AC. | 1497617898 | Acupuncturist | Los Angeles, CA | 2025 |
| Kayla Grzegorczyk, RDH | 1720854169 | Dental Hygienist | Saginaw, MI | 2023 |
| Lauretta Grzegorczyk, M.D. | 1346385424 | Internal Medicine Physician | Brooklyn, NY | 2007 |
| Samantha Grzegorczyk | 1619846961 | Pediatric Occupational Therapist | Warminster, PA | 2025 |
| Tanya Grzegorczyk, RN | 1679934798 | Adult Psychiatric/Mental Health Registered Nurse | Toledo, OH | 2016 |
| Alfred Grzegorek, PH.D. | 1952360828 | Psychologist | Stow, OH | 2006 |
| Daniel Grzegorek, D.O. | 1487651337 | Internal Medicine Physician | Willowbrook, IL | 2005 |
| Donna Grzegorek, BS, RDH, PHDH | 1649863309 | Dental Hygienist | Lake In The Hills, IL | 2021 |
| Gina Rosario Grzegorek, FNP-C | 1174118392 | Family Nurse Practitioner | Lafayette, IN | 2021 |
| Jennifer Grzegorek, PHD | 1063437044 | Psychologist | East Lansing, MI | 2006 |
| Teresa Grzegorek, PT, DPT | 1598688574 | Physical Therapist | Countryside, IL | 2026 |
| Joseph Grzegorski, PA | 1114688520 | Medical Physician Assistant | Newark, NY | 2022 |
| McKenna Grzegorski, AGACNP, RN | 1164363867 | Student in an Organized Health Care Education/Training Program | Lebanon, NH | 2026 |
| Steven Grzegorski | 1457097123 | Student in an Organized Health Care Education/Training Program | Ann Arbor, MI | 2022 |
| Emily Grzegorzewski, DPT | 1699434134 | Physical Therapist | Chicago, IL | 2021 |
| Lawrence Grzegorzewski, DDS | 1336247568 | General Practice Dentistry | Burton, MI | 2006 |
| Mackenzie Grzegorzewski, RBT | 1023798204 | Behavior Technician | Brownsburg, IN | 2023 |
| Michelle Grzegorzewski, RN | 1497469126 | Family Nurse Practitioner | Grand Blanc, MI | 2023 |
| Tamaris Grzegorzewski | 1912824921 | Family Nurse Practitioner | Saint Petersburg, FL | 2026 |
| Judy Grzegowski, PHYSICAL THERAPIST P | 1336385012 | Pediatric Physical Therapist | Staten Island, NY | 2008 |
| Matthew Grzegozewski | 1417163536 | Emergency Medicine Physician | Lone Tree, CO | 2007 |
| Kelli Grzeika, LNHA, LCSW | 1619818168 | Clinical Social Worker | Naugatuck, CT | 2026 |
| Maja Grzejdziak | 1558009415 | Obstetrics & Gynecology Physician | El Paso, TX | 2022 |
| Francis Grzejka, D.M.D. | 1588759237 | Oral and Maxillofacial Surgery (Dentist) | Methuen, MA | 2006 |
| Michael Grzejka, LCP | 1427898238 | Professional Counselor | Geneva, IL | 2024 |
| Sara Grzejszczak Fernandes, LMHC, BCBA, LABA | 1760803779 | Mental Health Counselor | Canton, MA | 2013 |
| Benjamin Grzelak, CDCA | 1528505153 | Addiction (Substance Use Disorder) Counselor | Wilmington, OH | 2017 |
| Carin Ness Grzelak, PSY.D. | 1023021607 | Psychologist | Morton, IL | 2006 |
| Danielle Grzelak, DPT | 1134576598 | Physical Therapist | Madison, WI | 2016 |
| Doreen Grzelak, NP-C | 1316241854 | Adult Health Nurse Practitioner | Leesburg, VA | 2010 |
| Emily Grzelak, MSW | 1568006997 | Case Manager/Care Coordinator | West Palm Beach, FL | 2019 |
| Joseph Grzelak, MD | 1669950671 | Family Medicine Physician | Burlington, KY | 2018 |
| Kathy Grzelak | 1871309559 | Professional Counselor | Chicago, IL | 2024 |
| Lisa Grzelak, PHARMD | 1386256287 | Pharmacist | Bloomingdale, IL | 2020 |
| Michael Grzelak, M.D. | 1386808913 | Hospitalist Physician | Winfield, IL | 2008 |
| Michael Grzelak | 1700321528 | Student in an Organized Health Care Education/Training Program | Baltimore, MD | 2017 |
| Michael Grzelak, D.M.D. | 1831305002 | Dentist | Summit, NJ | 2007 |
| Patricia Grzelak, RN | 1083255319 | Registered Nurse | Knoxville, TN | 2019 |
| Victoria Grzelak, RN | 1487191342 | Registered Nurse | Manalapan, NJ | 2017 |
| William Grzelak, D.D.S | 1700952561 | General Practice Dentistry | Rockford, IL | 2006 |
| Noreen Grzelak Volez, M.ED SPE ED | 1780979385 | Developmental Therapist | Hackensack, NJ | 2011 |
| Emily Grzelakowski, LCSW | 1245622448 | Clinical Social Worker | Chicago, IL | 2015 |
| Molly Grzelcyk | 1285467795 | Mental Health Counselor | Lexington, MA | 2024 |
| Michelle Grzelczak, PA | 1942048616 | Surgical Physician Assistant | Brick, NJ | 2024 |
| Monika Grzelczak, DNP FNP-BC | 1083450258 | Family Nurse Practitioner | West Haven, CT | 2024 |
| Ashley Grzelewski | 1407428774 | Behavior Technician | Irwin, PA | 2021 |
| Karen Grzelewski, L.AC | 1891388237 | Acupuncturist | New York, NY | 2021 |
| Jeffrey Grzelka | 1780124875 | Emergency Medicine Physician | Burlington, WI | 2017 |
| Carla Grzely, R.N. | 1972943710 | Registered Nurse | Painesville, OH | 2013 |
| Connie Grzembski | 1700398765 | Behavior Analyst | St Augustine, FL | 2017 |
| Adrienne Grzenda, M.D., PH.D | 1043604754 | Psychiatry Physician | Sylmar, CA | 2015 |
| Carolyn Grzenda, RD, LDN | 1023020005 | Registered Dietitian | Coatesville, PA | 2006 |
| Dylon Grzenda | 1710605654 | Athletic Trainer | North Andover, MA | 2022 |
| Kaleigh Grzenda, OTR/L | 1811813827 | Occupational Therapist | Nashua, NH | 2026 |
| Nicholas Grzenda, PA-C | 1831867761 | Physician Assistant | Portland, OR | 2021 |
| Joelle Grzenda-Lauermann, RN | 1265327886 | General Practice Registered Nurse | Denver, CO | 2025 |
| Kathy Grzendzielewski, RD, CDE | 1578636965 | Registered Dietitian | Menomonee Falls, WI | 2006 |
| Anna Grzenia | 1740074574 | Behavior Technician | Saginaw, MI | 2025 |
| Brenda Grzenia | 1376317388 | Hematology & Oncology Physician | Orland Park, IL | 2023 |
| Katelynn Grzenia | 1407702517 | Addiction (Substance Use Disorder) Counselor | Corunna, MI | 2026 |
| Kayte Grzenia, BSW, DP-C | 1841096989 | Addiction (Substance Use Disorder) Counselor | Bay City, MI | 2025 |
| Samantha Grzenia | 1851961544 | Certified Registered Nurse Anesthetist | Mobile, AL | 2021 |
| Rachel Grzenia-Franchi, MSW, LCSW | 1497248157 | Clinical Social Worker | Sun Prairie, WI | 2018 |
| Renata Grzeniewski, LMHC | 1780390757 | Mental Health Counselor | New York, NY | 2023 |
| Ryan Grzeschik | 1982461950 | Physical Therapist | Myrtle Beach, SC | 2024 |
| Andrew Grzesiak, DPT | 1205095304 | Physical Therapist | Ann Arbor, MI | 2008 |
| Anzhelika Grzesiak, APRN, FNP-C | 1790543932 | Nurse Practitioner | Normal, IL | 2024 |
| Emily Grzesiak | 1235850769 | Community Health Worker | Greeley, CO | 2022 |
| Gregory Grzesiak, PT | 1134361967 | Physical Therapist | Westmont, IL | 2009 |
| Karolina Grzesiak, PHARMD | 1952896623 | Pharmacist | North Las Vegas, NV | 2018 |
| Madison Grzesiak, PT, DPT | 1942040159 | Physical Therapist | Chicago, IL | 2024 |
| Mark Grzesiak, RPAC | 1376717272 | Physician Assistant | Mineola, NY | 2008 |
| Robert Grzesiak, O.D. | 1073735783 | Optometrist | Huntington Station, NY | 2007 |
| Susan Grzesiak | 1033407705 | Mental Health Counselor | Cottage Grove, OR | 2011 |
| Susan Grzesiak, LMSW | 1962705053 | Clinical Social Worker | Clinton Township, MI | 2010 |
| Honorata Grzesiak-Socha, PHARM.D. | 1336461169 | Pharmacist | Sterling Heights, MI | 2010 |
| Caryn Grzesiakowski, DC | 1205050259 | Chiropractor | Jonesboro, GA | 2007 |
| Tina Grzesiek, MED, LMHC | 1801110630 | Mental Health Counselor | Greencastle, IN | 2010 |
| Elizabeth Grzesik | 1548145154 | Student in an Organized Health Care Education/Training Program | Kansas City, MO | 2025 |
| Faith Grzesik, DNP, PMHNP-BC | 1528495090 | Psychiatric/Mental Health Nurse Practitioner | Fort Benning, GA | 2013 |
| Gregory Grzesik, D.O. | 1316389372 | Hospitalist Physician | Weston, WI | 2013 |
| Jennifer Grzesik, DPM | 1023579240 | Primary Podiatric Medicine Podiatrist | Brooklyn, NY | 2019 |
| Jennifer Grzesik, CADC | 1861794281 | Addiction (Substance Use Disorder) Counselor | Louisa, KY | 2010 |
| Kathleen Grzesik, MACFSLP | 1639319247 | Speech-Language Pathologist | Saint Louis, MO | 2009 |
| Kimberly Grzesik | 1376928135 | Speech-Language Pathologist | Malden, MA | 2015 |
| Kimberly Grzesik, MS, RN, AGACNP-BC | 1407381296 | Gerontology Nurse Practitioner | Orland Park, IL | 2017 |
| Marie Grzesik | 1073881132 | Pharmacist | Castle Rock, CO | 2011 |
| Peter Grzesik, DO | 1518378231 | Anesthesiology Physician | Worcester, MA | 2014 |
| Sang Soo Grzesik, DDS | 1952371031 | General Practice Dentistry | Great Lakes, IL | 2006 |
| Tamara Grzesik, LMHC | 1134367147 | Mental Health Counselor | Merrillville, IN | 2009 |
| Thais Grzesik | 1619541372 | Massage Therapist | Boynton Beach, FL | 2021 |
| Melanie Grzesik-Duffy, MA, LCPC | 1346528585 | Mental Health Counselor | Mokena, IL | 2011 |
| Elise Grzeskiewicz, MD | 1841811650 | Orthopaedic Foot and Ankle Surgery Physician | Vail, CO | 2020 |
| Helen Grzeskiewicz, LCP | 1265740088 | Psychologist | Wichita, KS | 2010 |
| Jillian Grzeskiewicz, APRN | 1265170112 | Psychiatric/Mental Health Nurse Practitioner | Gunnison, CO | 2022 |
| Joseph Grzeskiewicz, M.D. | 1528156619 | Plastic Surgery Physician | La Jolla, CA | 2006 |
| Timothy Grzeskiewicz, MA | 1518425826 | Mental Health Counselor | Covington, IN | 2019 |
| Renee Grzeskow | 1255295309 | Clinical Social Worker | Germantown, NY | 2025 |
| Alyssa Grzeskowiak | 1255806683 | Adult Health Nurse Practitioner | Syracuse, NY | 2018 |
| Dawn Grzeskowiak | 1629908124 | Case Manager/Care Coordinator | Alpena, MI | 2026 |
| Elizabeth Grzeskowiak, PT | 1851428908 | Physical Therapist | East Rochester, NY | 2007 |
| Krystyna Grzeskowiak, DDS | 1093948697 | General Practice Dentistry | Chicago, IL | 2009 |
| Marek Grzeskowiak, MD | 1821259003 | Hospice and Palliative Medicine (Family Medicine) Physician | Glenview, IL | 2008 |
| Marina Grzeskowiak, P.A. | 1093877516 | Physician Assistant | Brooklyn, NY | 2006 |
| Michael Grzeskowiak | 1215469218 | Cardiovascular Disease Physician | Peoria, IL | 2017 |
| Nadine Grzeskowiak | 1902285638 | Registered Nurse | Corvallis, OR | 2015 |
| Thomas Grzeskowiak, DDS | 1053422808 | General Practice Dentistry | White Bear Lake, MN | 2006 |
| Wojciech Grzeskowiak, MD | 1972592061 | Family Medicine Physician | Chicago, IL | 2005 |
| Dominika Grzeskowiak Stone | 1073204756 | Behavior Technician | Monrovia, CA | 2023 |
| Amanda Grzeslo, CADC | 1508659269 | Counselor | Lemont, IL | 2025 |
| Theresa Grzeslo, LCSW | 1063990174 | Clinical Social Worker | Denver, CO | 2018 |
| Joanne Grzeszak, DO | 1124083670 | Family Medicine Physician | Grand Rapids, MI | 2006 |
| Dariusz Grzeszczak, PT | 1215911193 | Physical Therapist | Jacksonville, FL | 2005 |
| Ewa Grzeszczak, MD | 1851475966 | Diagnostic Radiology Physician | Nashville, TN | 2006 |
| Marek Grzeszczak, M.D. | 1659455053 | Pediatric Critical Care Medicine Physician | Jackson, TN | 2006 |
| Mariola Grzeszczyk, APRN | 1003425463 | Nurse Practitioner | Rockford, IL | 2020 |
| Tatiana Grzeszkiewicz, M.D., PH.D. | 1841386489 | Dermatology Physician | Fremont, CA | 2006 |
| Konrad Grzeszkowiak, D.C. | 1740602234 | Chiropractor | Glenview, IL | 2014 |
| Madison Grzeszkowiak, D.C. | 1467877811 | Chiropractor | Moscow, ID | 2014 |
| Teresa Grzeszykowska | 1235605908 | Case Manager/Care Coordinator | Sanford, FL | 2018 |
| Michael Grzetic, DPT | 1144711482 | Physical Therapist | Geneva, IL | 2018 |
| Tara Grzetic, DMD, MS | 1467060897 | Orthodontics and Dentofacial Orthopedics Dentistry | St Charles, IL | 2020 |
| Meghan Grzetich, LMFT | 1619267259 | Marriage & Family Therapist | Joliet, IL | 2011 |
Source: CMS National Plan and Provider Enumeration System (NPPES) (download.cms.gov). A listing is not a recommendation: check a license with the state board (license lookups).