Providers Nena Sivess to Amanda Six, PA-C
300 individual NPIs in the federal registry, part 20,343 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. 110 link to a page of their own with Medicare and CMS data the registry does not carry.
| Provider | NPI | Specialty | Practice city | NPI issued |
|---|---|---|---|---|
| Nena Sivess | 1225632078 | Speech-Language Pathologist | Milwaukie, OR | 2020 |
| Sue Sivess Franks, APRN, BC, OCN | 1679635650 | Acute Care Nurse Practitioner | Dallas, TX | 2006 |
| Jessica Sivetz, CRNP | 1992374219 | Nurse Practitioner | Pittsburgh, PA | 2021 |
| Amanda Sivewright, PNP | 1467846089 | Pediatric Nurse Practitioner | Saint Louis, MO | 2015 |
| Kellie Sivewright, MSW, BSOCSCI | 1295629350 | Social Worker | Palm Beach Gardens, FL | 2025 |
| Joni Sivey, M.S., M.S.W, LSW | 1699892455 | Clinical Social Worker | Westerville, OH | 2007 |
| Michael Sivey, LPCC-S | 1407187958 | Professional Counselor | Columbus, OH | 2010 |
| Baljit Sivia, M.D. | 1518288398 | Internal Medicine Physician | Folsom, CA | 2010 |
| Gurjit Sivia, M.D. | 1225474836 | Internal Medicine Physician | Loma Linda, CA | 2013 |
| Itwinder Sivia | 1518402817 | Student in an Organized Health Care Education/Training Program | Bakersfield, CA | 2016 |
| Manreet Sivia | 1326689233 | Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist | Yuba City, CA | 2019 |
| Misha Sivia, M.D. | 1083874150 | Psychiatry Physician | San Francisco, CA | 2008 |
| Pushpinder Sivia, MD | 1619132719 | Vascular Surgery Physician | Rancho Mirage, CA | 2008 |
| Sandeep Sivia, NP | 1306095385 | Nurse Practitioner | San Jose, CA | 2008 |
| Alexa Sivic, PA-C | 1285301549 | Medical Physician Assistant | Cumberland, MD | 2021 |
| Amanda Sivic, PT, DPT | 1114483781 | Physical Therapist | Cleveland, OH | 2019 |
| Cynthia Sivick | 1710796396 | Mental Health Counselor | Woodbridge, VA | 2025 |
| Larrow Sivick, RPH | 1528208261 | Pharmacist | Gainesville, FL | 2009 |
| Kathryn Sivick-Lovgren, PT | 1093720542 | Physical Therapist | Wexford, PA | 2006 |
| Robert Sivier, MD | 1306897640 | Family Medicine Physician | Greenfield, OH | 2006 |
| Sydney Sivier, LMSW | 1265143788 | Social Worker | New Orleans, LA | 2022 |
| Mark Sivieri, M.D. | 1992701742 | Family Medicine Physician | Columbia, MD | 2005 |
| Geraldine Siviglia, PHARMACIST | 1972651412 | Pharmacist | Bronx, NY | 2007 |
| Christopher Sivik, LPC | 1629701404 | Professional Counselor | Paramus, NJ | 2022 |
| Jeffrey Sivik, PHARM.D. | 1922201904 | Pharmacist | Hershey, PA | 2007 |
| Mary Sivik, MD | 1841256013 | Dermatology Physician | Independence, OH | 2006 |
| Meggan Sivik | 1376835934 | Pharmacist | Cleona, PA | 2011 |
| Michael Sivik, D.M.D. | 1578714796 | General Practice Dentistry | Ashtabula, OH | 2008 |
| Steven Sivik, DMD | 1336862671 | General Practice Dentistry | Parma, OH | 2022 |
| Jacob Sivil | 1922998699 | Behavior Technician | Tucson, AZ | 2025 |
| Anberlin Sivilay | 1346138922 | Behavior Technician | Las Vegas, NV | 2025 |
| Crystal Sivilay | 1154005148 | Behavior Technician | Clarksville, TN | 2023 |
| Emmanuelle Sivilay | 1417469420 | Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist | El Monte, CA | 2017 |
| Janny Sivilay, LSCSW | 1821583089 | Clinical Social Worker | Wichita, KS | 2018 |
| John Sivilay | 1386103174 | Mental Health Counselor | Chico, CA | 2019 |
| Johnathan Sivilay, PA-C | 1568658359 | Physician Assistant | Wichita, KS | 2007 |
| Samantha Sivilay | 1205781309 | Registered Dietitian | Greenville, SC | 2026 |
| Andria Sivill, CNA | 1336089051 | Personal Care Attendant | South Sioux City, NE | 2026 |
| Ellie Sivill, LCPC, LPC | 1891017943 | Mental Health Counselor | Gilbert, AZ | 2010 |
| Susan Sivill, OT | 1174791032 | Occupational Therapist | La Crosse, WI | 2008 |
| Adriana Sivilla, BCABA 0-20-11021 | 1740630581 | Assistant Behavior Analyst | Miami, FL | 2016 |
| Michele Sivilla | 1619604360 | School Registered Nurse | Omaha, NE | 2022 |
| Chelsey Siville, PSY.D. | 1881336196 | Clinical Psychologist | Danville, IL | 2022 |
| Frank Sivilli, LCSW | 1568181642 | Clinical Social Worker | New York, NY | 2022 |
| Mackenzie Sivilli, DO | 1821939935 | Student in an Organized Health Care Education/Training Program | Valhalla, NY | 2026 |
| Michael Sivilli | 1063210128 | Physician Assistant | Bronx, NY | 2025 |
| Rose Sivilli, MD | 1215429469 | Psychiatry Physician | Los Angeles, CA | 2018 |
| Sandra Sivilli, RPH | 1023286911 | Pharmacist | Freeport, NY | 2008 |
| Teresa Sivilli, MPH, MSW | 1790495331 | Clinical Social Worker | Atlanta, GA | 2022 |
| Derek Sivillo, DPT | 1770299208 | Physical Therapist | Sacramento, CA | 2023 |
| Joel Sivillo, DPT | 1669885877 | Physical Therapist | Columbus, OH | 2014 |
| Karlie Sivillo, CNP | 1295363406 | Nurse Practitioner | Akron, OH | 2020 |
| Lindsay Sivillo | 1639764939 | Professional Counselor | Sacramento, CA | 2021 |
| Alanna Sivils | 1487103669 | Behavior Analyst | Atascadero, CA | 2016 |
| Amonye Sivils, RBT | 1083375588 | Behavior Technician | Newburgh, IN | 2022 |
| Andrew Sivils, MD | 1962246165 | Psychiatry Physician | St Louis, MO | 2024 |
| Brittney Sivils, APN | 1447590864 | Family Nurse Practitioner | Fort Smith, AR | 2013 |
| Corey Sivils, M.D. | 1841679636 | Diagnostic Radiology Physician | Jackson, MS | 2015 |
| Demi Sivils | 1932854015 | Behavior Analyst | Winter Park, FL | 2022 |
| Doye Sivils, LMFT MFC 48689 | 1477673655 | Marriage & Family Therapist | Citrus Heights, CA | 2007 |
| Jacob Sivils, MD | 1154989119 | Internal Medicine Physician | Greenville, SC | 2019 |
| John Sivils | 1194945501 | Addiction (Substance Use Disorder) Counselor | Chattanooga, TN | 2007 |
| Karen Sivils, PT | 1033240866 | Physical Therapist | Las Cruces, NM | 2007 |
| Kayla Sivils | 1366122111 | Psychiatric/Mental Health Nurse Practitioner | Joplin, MO | 2023 |
| Larry Sivils, MD | 1609885284 | Family Medicine Physician | Madison, MS | 2006 |
| Patrick Sivils, MA, LPC | 1972369155 | Professional Counselor | Round Rock, TX | 2024 |
| Rachel Sivils, PHARMD | 1285150136 | Pharmacist | Mililani, HI | 2017 |
| Rita Sivils, DO | 1912926163 | Emergency Medicine Physician | Largo, FL | 2006 |
| Steven Sivils, D.O. | 1528239316 | Anesthesiology Physician | Milwaukee, WI | 2008 |
| Victoria Sivils, M.D. | 1265896229 | Pediatrics Physician | Hattiesburg, MS | 2016 |
| Christina Sivin | 1295980886 | Speech-Language Pathologist | Merrick, NY | 2008 |
| Karen Sivin, LCSW | 1619000296 | Clinical Social Worker | Port Jefferson, NY | 2007 |
| Phyllis Sivin, LCSWR | 1598970527 | Clinical Social Worker | New York, NY | 2007 |
| Manuel Sivina, MD | 1619071818 | Vascular Surgery Physician | Miami Beach, FL | 2006 |
| Jacob Sivinski, MA | 1336943166 | Mental Health Counselor | Denver, CO | 2025 |
| Jared Sivinski, DPT | 1033932439 | Physical Therapist | River Grove, IL | 2024 |
| Jared Sivinski | 1518472786 | Pharmacist | Tucson, AZ | 2017 |
| Jillian Sivinski, OT | 1619297967 | Occupational Therapist | Vancouver, WA | 2010 |
| Sarah Sivinski, PA-C | 1922556653 | Physician Assistant | Dublin, OH | 2016 |
| Stefania Sivio | 1366275679 | Behavior Technician | Port St Lucie, FL | 2024 |
| Lina Sivio-Lieberman, PA-C | 1992003057 | Physician Assistant | New York, NY | 2011 |
| Greilys Sivira Rigaud | 1366206435 | Behavior Technician | Omaha, NE | 2024 |
| Xenia Sivirian | 1568877421 | Student in an Organized Health Care Education/Training Program | Fairfax, VA | 2014 |
| Abigail Sivis, PHARMD | 1346912540 | Pharmacist | Marion, IN | 2021 |
| Angie Sivis, RPH | 1649875238 | Pharmacist | Crawfordsville, IN | 2020 |
| Elizabeth Siviski, LCSW | 1003358516 | Clinical Social Worker | Westbrook, ME | 2016 |
| Marsha Siviski, M.A.,CCC-SLP | 1356517759 | Speech-Language Pathologist | Falmouth, ME | 2008 |
| Peter Siviski, M.D. | 1295757748 | Surgery Physician | Lewiston, ME | 2006 |
| Robert Siviski, PH.D. | 1548436942 | Clinical Child & Adolescent Psychologist | Falmouth, ME | 2008 |
| Kenneth Siviter | 1528485794 | Developmental Therapist | Deerfield Beach, FL | 2014 |
| Laura Siviter, PT, DPT | 1629523345 | Physical Therapist | Melbourne, FL | 2016 |
| Valerie Siviter | 1881187789 | Speech-Language Pathologist | Chesapeake, VA | 2018 |
| Liliana Sivitos | 1912666991 | Case Manager/Care Coordinator | Long Beach, CA | 2021 |
| Rachel Sivits, PA-C | 1235974577 | Physician Assistant | Keyser, WV | 2024 |
| Adam Sivitz, MD | 1508872631 | Pediatric Emergency Medicine (Emergency Medicine) Physician | Newark, NJ | 2006 |
| Jennifer Sivitz, MD | 1023096450 | Pediatric Endocrinology Physician | Livingston, NJ | 2006 |
| Julia Sivitz, DMD | 1508035965 | Periodontics | Boston, MA | 2008 |
| Lori Sivitz, PT | 1568587483 | Physical Therapist | Anchorage, AK | 2007 |
| Marta Sivitz, MD | 1952301871 | Ophthalmology Physician | Phila, PA | 2005 |
| Michael Sivitz, M.D. | 1356330013 | Legal Medicine | Abington, PA | 2005 |
| Sarah Sivitz, MSPT | 1669481842 | Physical Therapist | Ellicott City, MD | 2006 |
| William Sivitz, MD | 1891783445 | Endocrinology, Diabetes & Metabolism Physician | Iowa City, IA | 2005 |
| Danielle Sivixay, RN | 1164079521 | Emergency Registered Nurse | Glendora, CA | 2019 |
| Mohamedtaki Sivjee, MD | 1740357623 | Family Medicine Physician | Baldwin Park, CA | 2006 |
| Miriam Sivkin, M.D. | 1578624474 | Obstetrics & Gynecology Physician | Milford, CT | 2006 |
| Alexander Sivkov, PHARMD | 1407273097 | Pharmacist | Brooklyn, NY | 2014 |
| Georgy Sivkov | 1366110249 | Student in an Organized Health Care Education/Training Program | Los Angeles, CA | 2021 |
| Beverly Sivley, LCSW | 1659418127 | Clinical Social Worker | Fort Campbell Ky, KY | 2007 |
| Brandon Sivley | 1245909803 | Certified Registered Nurse Anesthetist | Oxford, MS | 2021 |
| Cameron Sivley | 1649737859 | Behavior Technician | Mishawaka, IN | 2019 |
| Hadley Sivley, MD | 1699208355 | Obstetrics & Gynecology Physician | Nashville, TN | 2017 |
| Jeremy Sivley | 1174805683 | Case Manager/Care Coordinator | Jonesboro, AR | 2011 |
| John Sivley, LCSW | 1134232200 | Clinical Social Worker | Bowling Green, KY | 2006 |
| John Sivley, MSW | 1275695405 | Clinical Social Worker | Harrisburg, PA | 2006 |
| Kelly Sivley, PT, DPT | 1538893706 | Physical Therapist | Nashville, TN | 2022 |
| Kelsey Sivley, PT, DPT | 1417506254 | Orthopedic Physical Therapist | Ooltewah, TN | 2019 |
| Lashala Sivley | 1225819659 | Registered Nurse | Portage, MI | 2023 |
| Laura Sivley | 1407567779 | Behavior Technician | Huntsville, AL | 2022 |
| Leslie Sivley, CRNA | 1578231593 | Certified Registered Nurse Anesthetist | Oxford, MS | 2021 |
| Mary Sivley, LPN | 1538875000 | Psychiatric/Mental Health Registered Nurse | Arab, AL | 2023 |
| Melanie Sivley, O.D. | 1407859531 | Optometrist | Birmingham, AL | 2005 |
| Melanie Sivley, LSCW | 1629487590 | Clinical Social Worker | Champaign, IL | 2014 |
| Nisha Sivley, PH.D., LPC | 1174618524 | Professional Counselor | Tuscaloosa, AL | 2006 |
| Rhonda Sivley, M.D. | 1235135963 | Internal Medicine Physician | Knoxville, TN | 2005 |
| Robert Sivley, PSY.D. | 1174613269 | Clinical Psychologist | Hopkinsville, KY | 2006 |
| Robert Sivley | 1720440217 | Clinical Social Worker | Hopkinsville, KY | 2016 |
| William Sivley, MSW | 1730255993 | Clinical Social Worker | Ellicott City, MD | 2006 |
| William Sivley, DDS | 1902021660 | Dentist | Abilene, TX | 2007 |
| Alison Sivo, CRNP | 1225719495 | Adult Health Nurse Practitioner | Baltimore, MD | 2023 |
| Ashley Sivo, ATC | 1649785882 | Athletic Trainer | West Orange, NJ | 2017 |
| Judit Sivo, M.D. | 1265591127 | Pediatrics Physician | Reston, VA | 2006 |
| Kelly Sivo | 1477063683 | Clinical Social Worker | Cheshire, CT | 2017 |
| Madeline Sivo, LICSW | 1578920948 | Clinical Social Worker | Burlington, VT | 2016 |
| Paul Sivo | 1801534946 | Chiropractor | Grain Valley, MO | 2022 |
| Katrina Sivo-Souza, DNP | 1124557756 | Family Nurse Practitioner | Norwich, CT | 2017 |
| Scott Sivola | 1922720994 | Counselor | Seattle, WA | 2022 |
| Susan Sivola, PT | 1790108827 | Physical Therapist | Des Moines, IA | 2014 |
| Roman Sivolap | 1881133924 | Adolescent Medicine (Internal Medicine) Physician | Allentown, PA | 2017 |
| Joseph Sivoli, CRPS | 1326861121 | Peer Specialist | Orlando, FL | 2024 |
| Michelle Sivolob | 1164368718 | Nurse Practitioner | Dallas, TX | 2026 |
| Marina Sivolobova | 1265263305 | Behavior Technician | Southborough, MA | 2024 |
| John Sivon, RPH | 1235424995 | Pharmacist | Spring Hill, FL | 2011 |
| Laurie Sivonen, LCSW | 1053567867 | Clinical Social Worker | Saco, ME | 2008 |
| Jimmy Sivongsay | 1871129189 | Counselor | Riverside, CA | 2020 |
| Bruno Sivongxay | 1063982049 | Addiction (Substance Use Disorder) Counselor | Fresno, CA | 2018 |
| Phetsamone Sivongxay | 1861329518 | Massage Therapist | Aiea, HI | 2026 |
| Sixxy Sivongxay | 1720729676 | Behavior Technician | Brooklyn Center, MN | 2022 |
| Brandon Sivoravong, DO | 1043890635 | Family Medicine Physician | Murphy, TX | 2021 |
| Jon Sivoravong, DO | 1770545238 | Family Medicine Physician | Owensboro, KY | 2006 |
| Angel Sivori | 1689541401 | Case Manager/Care Coordinator | Ukiah, CA | 2025 |
| Dana Sivori | 1811107592 | Mental Health Counselor | Louisville, KY | 2007 |
| Edna Sivori, OTR/L | 1578914172 | Occupational Therapist | Austin, TX | 2016 |
| Kent Sivori | 1235884313 | Marriage & Family Therapist | Sacramento, CA | 2022 |
| Lawrence Sivori | 1033372057 | Oral and Maxillofacial Surgery (Dentist) | Louisville, KY | 2008 |
| Taylor Sivori | 1235808197 | Occupational Therapist | Staten Island, NY | 2021 |
| Lisa Sivosky, LLMSW | 1134647639 | Clinical Social Worker | Flint, MI | 2017 |
| Guyathri Sivothayan, FNP-C | 1588350326 | Nurse Practitioner | Clermont, FL | 2023 |
| Charles Sivret, DC | 1154321214 | Chiropractor | Kewaunee, WI | 2005 |
| Deanna Sivret, PT | 1275009334 | Physical Therapist | Bellingham, WA | 2018 |
| Deborah Sivret, PT | 1760463707 | Physical Therapist | Greensboro, NC | 2005 |
| Leslie-Anne Sivret, LMP | 1629293329 | Massage Therapist | Des Moines, WA | 2007 |
| Aylin Sivri | 1477904407 | Pharmacist | New Milford, CT | 2016 |
| Nevin Sivri | 1497351936 | Pharmacist | Danbury, CT | 2020 |
| Nicholas Sivrich, P.T. | 1366487712 | Physical Therapist | White Oak, PA | 2006 |
| Julin Sivriev | 1063371144 | Physician Assistant | Philadelphia, PA | 2026 |
| Jodi Sivright, LMP | 1740963875 | Massage Therapist | Coeur D Alene, ID | 2023 |
| Suceil Sivsammye, MD | 1336521103 | Internal Medicine Physician | Battle Creek, MI | 2015 |
| Dmitriy Sivtsov, MD | 1467553958 | Psychiatry Physician | San Diego, CA | 2006 |
| Janet Sivula, R.N. | 1639344526 | Registered Nurse | West Bend, WI | 2008 |
| Megan Sivula, LPC | 1649971078 | Mental Health Counselor | Columbus, OH | 2023 |
| Michael Sivulich, MD | 1639155393 | Gastroenterology Physician | Lewiston, ME | 2005 |
| Tara Sivulka | 1477232973 | Occupational Therapist | Murray, UT | 2023 |
| Brianna Sivy, LCSW | 1134871676 | Clinical Social Worker | Pittsburgh, PA | 2022 |
| Rachel Sivy | 1396600540 | Professional Counselor | Cincinnati, OH | 2025 |
| Demi Sivyer | 1164145124 | Behavior Technician | Folsom, CA | 2022 |
| Shannon Sivyer, BCBA | 1225480882 | Behavior Analyst | Lansing, MI | 2016 |
| Christina Siwa, MSOT, OTR/L | 1669970307 | Pediatric Occupational Therapist | Orland Park, IL | 2018 |
| Eliezer Siwa | 1700387586 | Physical Therapist | Royal Oak, MI | 2018 |
| Erlinda Siwa, MD | 1699732644 | Family Medicine Physician | Chicago, IL | 2006 |
| Karen Siwa, RN | 1386192060 | Psychiatric/Mental Health Registered Nurse | Toledo, OH | 2016 |
| Mitchell Siwa | 1255089702 | Student in an Organized Health Care Education/Training Program | Orange, CA | 2022 |
| Thomas Siwa, D.C. | 1770665895 | Chiropractor | Omaha, NE | 2006 |
| Winnie Siwa | 1205515046 | Professional Counselor | Colorado Springs, CO | 2023 |
| Pradeep Siwach, MBBS, DCH, | 1912229592 | Neonatal-Perinatal Medicine Physician | Roanoke, VA | 2010 |
| Teresa Siwajek, OTA/L | 1942703145 | Occupational Therapy Assistant | Toledo, OH | 2018 |
| Omotolani Siwajuola | 1447053434 | Case Manager/Care Coordinator | Hyattsville, MD | 2025 |
| Jennah Siwak, M.D. | 1205220597 | Family Medicine Physician | Metamora, IL | 2015 |
| Jessica Siwak, LCSW | 1477828713 | Clinical Social Worker | Pontiac, IL | 2012 |
| Weronika Siwak, RN | 1326634940 | Registered Nurse | Elmwood Park, IL | 2020 |
| Ashmita Siwakoti, M.D. | 1881076818 | Hospitalist Physician | Lexington, KY | 2015 |
| Dil Siwakoti, MD | 1316798580 | Student in an Organized Health Care Education/Training Program | Erie, PA | 2024 |
| Indra Siwakoti, LPN | 1639456080 | Licensed Practical Nurse | Syracuse, NY | 2011 |
| Krishika Siwakoti | 1427885383 | Student in an Organized Health Care Education/Training Program | Cincinnati, OH | 2024 |
| Krishmita Siwakoti | 1194130476 | Endocrinology, Diabetes & Metabolism Physician | Birmingham, AL | 2014 |
| Prem Siwakoti, PA | 1841946738 | Medical Physician Assistant | Columbus, OH | 2022 |
| Puspa Siwakoti, LPN | 1417765280 | Licensed Practical Nurse | Circleville, OH | 2024 |
| Sabitra Siwakoti, NURSE PRACTITIONER | 1265949739 | Family Nurse Practitioner | Plainview, NY | 2018 |
| Shuvechaya Siwakoti, PMHNP | 1619777489 | Psychiatric/Mental Health Nurse Practitioner | Wilmington, NC | 2025 |
| Supriya Siwakoti | 1760376073 | Behavior Technician | Irvine, CA | 2025 |
| Tulasi Siwakoti, LMSW | 1215701297 | Social Worker | Buffalo, NY | 2023 |
| Jaylene Siwallace | 1881148310 | Developmental Therapist | Virginia Beach, VA | 2016 |
| Huma Siwani, SLP-A | 1679921092 | Speech-Language Assistant | Houston, TX | 2016 |
| Rizwan Siwani | 1518197714 | Pediatrics Physician | Rochester, MN | 2009 |
| Shifa Siwani, FNP-C | 1881163251 | Registered Nurse | Houston, TX | 2018 |
| Rebecca Siwanowicz, LCSW | 1780268672 | Clinical Social Worker | Concord, NC | 2021 |
| Sara Siwanowicz, CRNA | 1760447908 | Certified Registered Nurse Anesthetist | Vancouver, WA | 2006 |
| Elena Siwarat | 1366383614 | School Social Worker | Circle Pines, MN | 2026 |
| Nicole Siwarski, PHARMD | 1366318602 | Pharmacist | Rochester, NY | 2025 |
| Vanessa Siwarski | 1750071932 | Behavior Technician | Tampa, FL | 2023 |
| Sujata Siwatch, MBBS,MD | 1114181427 | Cardiovascular Disease Physician | Minneapolis, MN | 2008 |
| Portia Siwawa, MD | 1215220488 | Surgery Physician | Conyers, GA | 2011 |
| Jairu Siwazuri, RN | 1679930051 | Registered Nurse | Far Rockaway, NY | 2016 |
| Mazal Siweid, LMSW | 1720776602 | Clinical Social Worker | Brooklyn, NY | 2023 |
| Adam Siwek, DO | 1770074007 | Interventional Pain Medicine Physician | Phoenix, AZ | 2018 |
| Angela Siwek, MD | 1477525996 | Pediatrics Physician | Edina, MN | 2006 |
| Beth Siwek, RD, RN, MPH | 1336272087 | Registered Dietitian | Phoenix, AZ | 2007 |
| Bethay Siwek, QIDP | 1326497744 | Social Worker | McHenry, IL | 2016 |
| Christopher Siwek, M. D. | 1497754709 | Specialist | El Dorado, KS | 2005 |
| Courtney Siwek, DPT | 1245714039 | Physical Therapist | Tawas City, MI | 2018 |
| Danielle Siwek, LCSW | 1659807030 | Clinical Social Worker | Philadelphia, PA | 2017 |
| Diana Siwek, LCSW | 1578831830 | Clinical Social Worker | Columbia, MD | 2011 |
| Diane Siwek, P.T. | 1134289333 | Physical Therapist | Boca Raton, FL | 2006 |
| Donald Siwek, M.D. | 1760439053 | Anesthesiology Physician | Royal Oak, MI | 2006 |
| Emily Siwek, B.S. | 1598991051 | Social Worker | Clinton Township, MI | 2009 |
| Gregory Siwek, MD | 1437125317 | Infectious Disease Physician | Saint Paul, MN | 2006 |
| Jacqueline Siwek | 1659097798 | Behavior Technician | Chicago, IL | 2022 |
| Jay Siwek, MD | 1821021346 | Family Medicine Physician | Colmar Manor, MD | 2006 |
| Jennifer Siwek, LMT | 1093293458 | Massage Therapist | Okemos, MI | 2018 |
| Jesse Siwek | 1396223178 | Physical Therapist | Tawas City, MI | 2018 |
| Leland Siwek, M.D. | 1801894811 | Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician | Spokane, WA | 2005 |
| Malgorzata Siwek | 1235993049 | Home Health Registered Nurse | Everett, WA | 2024 |
| Michael Siwek, D.D.S | 1073557732 | Dentist | River Grove, IL | 2006 |
| Steven Siwek, MD | 1932204435 | Interventional Pain Medicine Physician | Phoenix, AZ | 2006 |
| Yvonne Siwek, M.D. | 1437135472 | Emergency Medicine Physician | West Reading, PA | 2005 |
| Tylin Siwemuke, MD | 1326849316 | Student in an Organized Health Care Education/Training Program | Boston, MA | 2025 |
| Sarah Siwi, LAC, NCC | 1649131822 | Marriage & Family Therapist | Hainesport, NJ | 2025 |
| Anthony Siwiak | 1750090627 | Pharmacist | Pittsburgh, PA | 2022 |
| Rae Siwick | 1942666847 | Specialist | Seaford, NY | 2016 |
| Catherine Siwicke | 1801281613 | Child & Adolescent Psychiatric/Mental Health Registered Nurse | Lakewood, CO | 2015 |
| David Siwicki, M.D. | 1184692741 | Emergency Medicine Physician | Warwick, RI | 2006 |
| Juliann Siwicki, LGPC | 1568145282 | Counselor | Ellicott City, MD | 2023 |
| Kayleen Siwicki | 1942174057 | Behavior Technician | Woodbury, MN | 2025 |
| Matthew Siwicki, RPH | 1861544678 | Pharmacist | Grantsville, WV | 2007 |
| Robert Siwicki, D.P.M. | 1881670081 | Podiatrist | Fort Walton Beach, FL | 2005 |
| Adam Siwiec, DPT | 1093209900 | Physical Therapist | Chicago, IL | 2018 |
| Brian Siwiec, D.C. | 1114078201 | Chiropractor | Jackson, NJ | 2007 |
| Hanna Siwiec, M.D. | 1053301168 | Family Medicine Physician | Frederick, MD | 2005 |
| Robert Siwiec, M.D. | 1184880676 | Gastroenterology Physician | Carmel, IN | 2008 |
| Ryan Siwiec, D.O. | 1841429925 | Orthopaedic Surgery Physician | Auburn Hills, MI | 2009 |
| Sharon Siwiec, NP | 1548226731 | Adult Health Nurse Practitioner | Boston, MA | 2006 |
| Stephan Siwiec, PHD | 1487509972 | Clinical Psychologist | Madison, WI | 2026 |
| Travis Siwiec, DPT | 1801469176 | Physical Therapist | Cedar Rapids, IA | 2021 |
| Aleksandra Siwik, RN | 1366226771 | Critical Care Medicine Registered Nurse | Tucson, AZ | 2023 |
| Anna Siwik | 1295327070 | Massage Therapist | New York, NY | 2021 |
| Chelsea Siwik, PHD | 1598540809 | Clinical Psychologist | Cleveland, OH | 2023 |
| Courtney Siwik | 1134866106 | Behavior Technician | Lenexa, KS | 2022 |
| Jaroslaw Siwik, MD | 1043280522 | Internal Medicine Physician | Portage, MI | 2006 |
| Kimberly Siwik, LPCC | 1588295620 | Mental Health Counselor | Wadsworth, OH | 2020 |
| Nicole Siwik, PHARM.D. | 1588947527 | Pharmacist | Fairport, NY | 2011 |
| Stacie Siwik, LICSW | 1326161894 | Clinical Social Worker | Londonderry, NH | 2007 |
| Steven Siwik, MD | 1821069089 | Diagnostic Radiology Physician | Tucson, AZ | 2006 |
| Violet Siwik, MD | 1003988486 | Family Medicine Physician | Tucson, AZ | 2006 |
| Stephannie Siwik-Simpson, NP | 1578272597 | Adult Health Nurse Practitioner | Greenwich, NY | 2022 |
| Erica Siwila-Sackman, MD | 1033613005 | Psychiatry Physician | Worcester, MA | 2018 |
| Tanay Siwingwa | 1831878057 | Marriage & Family Therapist | Brookhaven, GA | 2023 |
| Anne Siwinski, APN | 1669107744 | Gerontology Nurse Practitioner | Oak Lawn, IL | 2022 |
| Denise Siwinski, MD | 1588624860 | Family Medicine Physician | Ocean, NJ | 2006 |
| Leah Siwinski, MS | 1932034923 | Student in an Organized Health Care Education/Training Program | Colorado Springs, CO | 2026 |
| Paige Siwinski | 1952984163 | Speech-Language Pathologist | Tinley Park, IL | 2021 |
| Sylvia Siwinski | 1265603286 | Specialist | Mundelein, IL | 2008 |
| Aleksandra Siwkiewicz, MD | 1851732853 | Family Medicine Physician | Lenexa, KS | 2013 |
| Krystyna Siwko, OTR, CHT | 1316905623 | Hand Occupational Therapist | Woodbury, NJ | 2006 |
| Ronald Siwoff, O.D. | 1013914175 | Low Vision Rehabilitation Optometrist | Denville, NJ | 2005 |
| Mark-Victor Siwoski | 1619363645 | Neurology Physician | Kalamazoo, MI | 2015 |
| Olivia Siwoski, M.D. | 1609260884 | Internal Medicine Physician | Kalamazoo, MI | 2015 |
| Christine Siwula | 1902666530 | Social Worker | Arlington Heights, IL | 2024 |
| Claire Siwula | 1316182108 | Marriage & Family Therapist | Santa Fe, NM | 2008 |
| Natalie Siwula, PA | 1487470456 | Physician Assistant | Allendale, MI | 2024 |
| Jodi Siwulec | 1861344525 | Community Health Worker | Las Vegas, NV | 2026 |
| Amber Siwy | 1891131892 | Registered Nurse | Buffalo, NY | 2013 |
| Barbara Siwy, M.D. | 1316072978 | Specialist | Carmel, IN | 2007 |
| Brandelyn Siwy | 1598264830 | Behavior Technician | Novi, MI | 2018 |
| Brandon Siwy, DOC | 1982361838 | Chiropractor | Cheektowaga, NY | 2021 |
| Christina Siwy, RN, OCN, CDOE | 1619320421 | Diabetes Educator Registered Nurse | Cumberland, RI | 2016 |
| Grazyna Siwy, M.D. | 1447498910 | Internal Medicine Physician | Chicago, IL | 2009 |
| Haley Siwy | 1326927062 | Behavior Technician | Germantown, WI | 2025 |
| James Siwy, PH.D. | 1225245202 | Group Psychotherapy Psychologist | Roswell, GA | 2007 |
| Katherine Siwy, MS, OTR/L | 1922760115 | Occupational Therapist | Boston, MA | 2021 |
| Kirsten Siwy, PA-C | 1003559832 | Medical Physician Assistant | Leland, NC | 2022 |
| Naomi Siwy, FNP-C | 1326615246 | Nurse Practitioner | Providence, RI | 2021 |
| Samuel Siwy, PHARMD | 1891670139 | Pharmacist | West Lafayette, IN | 2025 |
| Tymoteusz Siwy, DPM | 1316564107 | Podiatrist | Narberth, PA | 2020 |
| Wendy Siwy | 1104485234 | Social Worker | Buffalo, NY | 2019 |
| Yasmin Siwy, PHARMD | 1336978618 | Pharmacist | Indianapolis, IN | 2024 |
| Adam Six, D.C. | 1518281674 | Chiropractor | Townsend, MT | 2010 |
| Adrian Six, MSW | 1306221874 | Counselor | Elkhart, IN | 2015 |
| Alana Six | 1750181954 | Behavior Technician | El Segundo, CA | 2025 |
| Alexandra Six, CPNP-AC | 1609244219 | Pediatric Nurse Practitioner | Columbus, OH | 2015 |
| Allison Six | 1831530203 | Nurse Practitioner | Mc Murray, PA | 2013 |
| Amanda Six, PA-C | 1275072399 | Physician Assistant | Tulsa, OK | 2017 |
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).