Providers Natalie Koster to Alessandra Kostolias, M.D.
300 individual NPIs in the federal registry, part 11,763 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. 111 link to a page of their own with Medicare and CMS data the registry does not carry.
| Provider | NPI | Specialty | Practice city | NPI issued |
|---|---|---|---|---|
| Natalie Koster | 1508710286 | Mental Health Counselor | Sandpoint, ID | 2026 |
| Natalie Koster | 1619733532 | Family Nurse Practitioner | Dallas, TX | 2024 |
| Neal Koster | 1669286480 | Registered Nurse | Cedar Springs, MI | 2025 |
| Nicole Koster, PT, DPT | 1982932414 | Physical Therapist | Watertown, NY | 2009 |
| Paige Koster | 1306352851 | Behavior Technician | Colorado Springs, CO | 2017 |
| Patricia Koster | 1184332181 | Personal Care Attendant | Huntington, WV | 2022 |
| Patricia Koster, RN | 1962794388 | School Registered Nurse | Ronkonkoma, NY | 2011 |
| Rachel Koster, PA-C | 1437469830 | Physician Assistant | Chubbuck, ID | 2010 |
| Rachel Koster, M.S., CCC-SLP | 1942673561 | Speech-Language Pathologist | Baltimore, MD | 2015 |
| Raevyn Koster | 1033512306 | Community Health Worker | Laramie, WY | 2014 |
| Robert Koster, M.D. | 1023116530 | Internal Medicine Physician | Dallas, TX | 2006 |
| Ryan Koster | 1710558010 | General Practice Dentistry | Westminster, CO | 2021 |
| Ryan Koster | 1912532607 | Behavior Technician | Orange, CA | 2020 |
| Sara Koster, MA CCC SLP | 1063659159 | Speech-Language Pathologist | Kew Gardens, NY | 2009 |
| Sara Koster, FNP-BC | 1740575877 | Family Nurse Practitioner | Grand Rapids, MI | 2011 |
| Sarah Koster, LPC | 1174627558 | Professional Counselor | South Charleston, WV | 2006 |
| Sarah Koster, NP | 1922966605 | School Nurse Practitioner | Oakland, CA | 2026 |
| Seth Koster | 1568809960 | Speech-Language Pathologist | Las Cruces, NM | 2013 |
| Seth Koster, D.O. | 1588906077 | Family Medicine Physician | Waco, TX | 2013 |
| Shellie Koster, LMHC | 1629424080 | Mental Health Counselor | Boca Raton, FL | 2016 |
| Stacia Koster | 1033852850 | Student in an Organized Health Care Education/Training Program | Bronx, NY | 2022 |
| Stephen Koster, C.R.N.A. | 1942221726 | Certified Registered Nurse Anesthetist | Savannah, TN | 2006 |
| Steven Koster, COUNSELRO EDUC LTD | 1164618195 | Professional Counselor | Hartford, MI | 2007 |
| Susan Koster, CRNP | 1134337207 | Adult Health Nurse Practitioner | Hatfield, PA | 2007 |
| Suzanne Koster, PT, DPT | 1164674032 | Physical Therapist | Commack, NY | 2008 |
| Thomas Koster, DO | 1619437456 | Forensic Pathology Physician | Miami, FL | 2019 |
| Trudy Koster, PA | 1174546147 | Medical Physician Assistant | Billings, MT | 2006 |
| Tyler Koster, MSW, ASW | 1750177994 | Social Worker | Sacramento, CA | 2025 |
| Victoria Koster, M.D. | 1861787335 | Diagnostic Radiology Physician | New Orleans, LA | 2011 |
| Virginia Koster, MSW | 1366595027 | Clinical Social Worker | Ypsilanti, MI | 2007 |
| Killian Koster-Rector | 1942148416 | Home Health Aide | Parkersburg, WV | 2026 |
| Carolyn Kostera, NP | 1376616201 | Adult Health Nurse Practitioner | Northfield, NJ | 2006 |
| Cemre Kosterelioglu, RN | 1801782826 | Pediatric Registered Nurse | Brooklyn, NY | 2025 |
| Jordan Kosterich, DC | 1538609425 | Chiropractor | New Rochelle, NY | 2017 |
| Steven Kosterich | 1346316171 | Chiropractor | New Rochelle, NY | 2006 |
| Elena Kosterina, M.A. | 1699176131 | Student in an Organized Health Care Education/Training Program | Cambridge, MA | 2014 |
| Sarah Kosterlitz, MSW, LICSW | 1699580696 | Clinical Social Worker | Annapolis, MD | 2025 |
| Erika Kosterlitzky, LMFT | 1053121855 | Marriage & Family Therapist | Glendora, CA | 2025 |
| Christina Kosterman, RN | 1578131587 | Home Health Registered Nurse | Racine, WI | 2021 |
| Daniel Kosterman, OPTOMETRIST | 1386719953 | Optometrist | Eagle River, AK | 2006 |
| Joseph Kosterman, DC | 1790849412 | Chiropractor | Fayetteville, NC | 2006 |
| Karyne Kosterman, SAC-IT | 1790455178 | Addiction (Substance Use Disorder) Counselor | Appleton, WI | 2021 |
| Mary Kosterman, NP | 1386408599 | Family Nurse Practitioner | South Milwaukee, WI | 2024 |
| Melinda Kosterman, MSW LCSW LICSW | 1881362564 | Clinical Social Worker | Brattleboro, VT | 2021 |
| Melissa Kosterman | 1760901912 | Mental Health Counselor | Waukegan, IL | 2017 |
| Michael Kosterman, DC | 1396843546 | Chiropractor | Fayetteville, NC | 2006 |
| Re Becca Kosterman, LICSW | 1437186830 | Clinical Social Worker | Lexington, MA | 2006 |
| Stephen Kosterman, D.C. | 1679805600 | Chiropractor | Cary, NC | 2010 |
| Timothy Kosterman, D.C. | 1396753646 | Chiropractor | Clinton, NC | 2006 |
| Amy Kosters, LCSW | 1932540192 | Clinical Social Worker | Hot Springs, AR | 2013 |
| Brian Kosters, LPC | 1073752275 | Professional Counselor | Hot Springs, AR | 2009 |
| David Kosters, ASSOCIATE DIRECTORBO | 1457563033 | Case Manager/Care Coordinator | Malvern, AR | 2007 |
| Derek Kosters, D.C. | 1205171915 | Chiropractor | Sioux Center, IA | 2012 |
| Diane Kosters, PH.D. | 1902029275 | Psychologist | Walnut Creek, CA | 2007 |
| Donique Kosters, LLMSW | 1609267848 | Social Worker | Wyoming, MI | 2015 |
| Gregory Kosters, D.O. | 1821076886 | Family Medicine Physician | Sibley, IA | 2006 |
| Heather Kosters, LPN | 1447464656 | Licensed Practical Nurse | Malvern, AR | 2007 |
| John Kosters, M.D. | 1902873664 | Anesthesiology Physician | Phoenix, AZ | 2006 |
| Kay Kosters, PA-C | 1174519193 | Medical Physician Assistant | Le Mars, IA | 2005 |
| Michael Kosters, M.D. | 1265874853 | Pulmonary Disease Physician | Plattsburgh, NY | 2013 |
| Tameira Kosters | 1780460998 | Physician Assistant | Saint Joseph, MI | 2023 |
| Teoni Kosters, CF-SLP | 1588282586 | Speech-Language Pathologist | Tucson, AZ | 2020 |
| Whitney Kosters | 1508305210 | Mental Health Counselor | Portland, OR | 2017 |
| Allison Kostes, PT, DPT | 1063959799 | Physical Therapist | Nashville, TN | 2017 |
| Brett Kostes | 1972779684 | Mechanotherapist | Lemont, IL | 2008 |
| Sharon Kostes | 1962196741 | Physical Therapist | Hermitage, TN | 2023 |
| Joseph Kostesich, O.D. | 1831181411 | Optometrist | Shelby Township, MI | 2005 |
| Kamryn Kosteski | 1689493223 | Behavior Technician | Lake Mary, FL | 2024 |
| Michael Kosteskie, OT | 1386655231 | Occupational Therapist | Michigan City, IN | 2006 |
| Adam Kosteva, MD | 1538691480 | Family Medicine Physician | Clinton, MI | 2017 |
| Benjamin Kosteva, ATC | 1558882738 | Athletic Trainer | Fort Drum, NY | 2017 |
| Charles Kosteva, D.D.S. | 1174695563 | General Practice Dentistry | Bethlehem, PA | 2006 |
| John Kosteva, MD | 1700036902 | Hematology & Oncology Physician | Philadelphia, PA | 2008 |
| Anna Kostevich, MD | 1518609049 | Internal Medicine Physician | Chicago, IL | 2022 |
| Cassie Kostevicki, PHARMD | 1427816404 | Pharmacist | Pensacola, FL | 2024 |
| Ioanna Kosti | 1114498649 | Clinical Social Worker | Davidson, NC | 2018 |
| Jorgena Kosti, D.O | 1649719808 | Hematology & Oncology Physician | Maywood, IL | 2017 |
| Colleen Kostiak, P.T. | 1912022823 | Physical Therapist | Clarks Summit, PA | 2007 |
| Emma Kostiak, BSN, RN | 1992340731 | Certified Registered Nurse Anesthetist | Pittsburgh, PA | 2019 |
| Amber Kostial | 1760772693 | Psychiatry Physician | Bellingham, WA | 2011 |
| Rachel Kostial | 1982550109 | Behavior Analyst | Rockville, MD | 2026 |
| Robert Kostial, D.D.S. | 1568552354 | General Practice Dentistry | Phoenix, AZ | 2006 |
| Melissa Kostial-Janos, LCSW, ACSW | 1811164783 | Mental Health Counselor | Gurnee, IL | 2008 |
| Jamie Kostialik, MS, CGC | 1730451006 | Genetic Counselor (M.S.) | Los Angeles, CA | 2012 |
| Candace Kostianis | 1710528666 | Behavior Technician | Beaverton, OR | 2019 |
| Deborah Kostianovsky, M.D. | 1831342922 | Child & Adolescent Psychiatry Physician | Philadelphia, PA | 2008 |
| Megan Kostibas, M.D. | 1679898134 | Anesthesiology Physician | Baltimore, MD | 2010 |
| Abigail Kostic | 1942045596 | Mental Health Counselor | Omaha, NE | 2024 |
| Aleksandra Kostic, MD | 1528852555 | Physical Medicine & Rehabilitation Physician | Chicago, IL | 2025 |
| Amanda Kostic, NP-C | 1629648225 | Family Nurse Practitioner | Chicago, IL | 2021 |
| Barbara Kostic, PHARMD | 1609046275 | Pharmacotherapy Pharmacist | Asheville, NC | 2008 |
| Biljana Kostic, M.D. | 1184703621 | Internal Medicine Physician | Bermuda Dunes, CA | 2006 |
| Emily Kostic | 1356111553 | Behavior Technician | Minneapolis, MN | 2024 |
| Jasminka Kostic, MD | 1073599775 | Family Medicine Physician | Chicago, IL | 2005 |
| Katarina Kostic, LSW | 1033938329 | Social Worker | Bethlehem, PA | 2024 |
| Kathryn Kostic, MD | 1982635397 | Obstetrics & Gynecology Physician | Mequon, WI | 2006 |
| Kelly Kostic, PHARMD | 1073986238 | Pharmacist | Baltimore, MD | 2015 |
| Maja Kostic, MD, PHD | 1093205452 | Ophthalmology Physician | Miami, FL | 2018 |
| Mark Kostic, MD | 1306893896 | Medical Toxicology (Emergency Medicine) Physician | Milwaukee, WI | 2006 |
| Melissa Kostic, COTA | 1215181466 | Occupational Therapy Assistant | Middletown, NY | 2008 |
| Michelle Kostic, DNP | 1902391386 | Nurse Practitioner | Tallahassee, FL | 2018 |
| Natasa Kostic | 1548955057 | Student in an Organized Health Care Education/Training Program | Philadelphia, PA | 2023 |
| Sanja Kostic | 1417606260 | Mental Health Counselor | Aurora, IL | 2022 |
| Suzana Kostic | 1043703184 | Behavior Technician | Clinton Twp, MI | 2018 |
| Claudia Kostich, ATC, LAT | 1821554643 | Athletic Trainer | Henderson, NC | 2019 |
| Esther Kostich | 1740731744 | Addiction (Substance Use Disorder) Counselor | Canton, OH | 2016 |
| Gordana Kostich, RPH | 1770865610 | Pharmacist | Lyons, IL | 2011 |
| Lori Kostich, SLP | 1528917101 | Speech-Language Pathologist | Madison, CT | 2026 |
| Loryjean Kostich, CNM | 1669589107 | Advanced Practice Midwife | Madison, WI | 2006 |
| Mirjana Kostich, M.D. | 1740269315 | Pediatrics Physician | East Boston, MA | 2006 |
| Nada Kostich | 1629305701 | Anesthesiology Physician | Oak Brook, IL | 2009 |
| Zeljka Kostich, M.D | 1487698114 | Emergency Medicine Physician | Wildomar, CA | 2006 |
| Julie Kostich-Connors, LLPC | 1144906207 | Professional Counselor | Negaunee, MI | 2023 |
| Brittany Kostichka | 1568328144 | Occupational Therapist | Manitowoc, WI | 2025 |
| Savannah Kostichka, M.S., CF-SLP | 1053233650 | Speech-Language Pathologist | Sheboygan Falls, WI | 2026 |
| Alexandra Kostick, M.D. | 1215927702 | Ophthalmology Physician | Ormond Beach, FL | 2005 |
| Athena Kostick | 1033744636 | Addiction (Substance Use Disorder) Counselor | Santa Rosa, CA | 2020 |
| Barbara Kostick, M.D. | 1104840586 | Family Medicine Physician | Fremont, CA | 2006 |
| Camryn Kostick, MA | 1073306072 | Marriage & Family Therapist | Chicago, IL | 2025 |
| Cori Kostick, PA-C | 1922320092 | Physician Assistant | Boston, MA | 2010 |
| David Kostick, MD | 1336139187 | Ophthalmology Physician | Jacksonville, FL | 2005 |
| Emily Kostick | 1962239525 | Social Worker | East Brunswick, NJ | 2024 |
| Hollie Kostick, RN | 1629740436 | Registered Nurse | Fortuna, CA | 2021 |
| Jacqueline Kostick, PHARMD | 1932082120 | Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist | Falls Church, VA | 2025 |
| Katelyn Kostick, DPT | 1104460690 | Physical Therapist | River Falls, WI | 2019 |
| Marylynne Kostick, IBCLC, CD/PCD(DONA) | 1811860596 | Doula | Chehalis, WA | 2025 |
| Nathan Kostick | 1225787898 | Student in an Organized Health Care Education/Training Program | Kissimmee, FL | 2022 |
| Nathaniel Kostick | 1689227886 | Mental Health Counselor | New Brighton, MN | 2019 |
| Neil Kostick, M.D. | 1730348657 | Psychiatry Physician | Albany, CA | 2008 |
| Nicholas Kostick, RN | 1306709712 | Infusion Therapy Registered Nurse | Pikesville, MD | 2025 |
| Richard Kostick, DO | 1073582557 | Diagnostic Radiology Physician | Sayre, PA | 2006 |
| Sarah Kostick | 1508520164 | Case Management Registered Nurse | Vancouver, WA | 2021 |
| Shana Kostick | 1861634305 | Professional Counselor | Plano, TX | 2009 |
| Skylar Kostick, PA-C | 1164119574 | Physician Assistant | San Francisco, CA | 2023 |
| Talia Kostick | 1114423050 | Family Medicine Physician | Santa Rosa, CA | 2018 |
| Eleni Kostidakis | 1376211508 | Behavior Technician | Brandon, FL | 2021 |
| Magdalini Kostidakis, PT, DPT | 1184224024 | Physical Therapist | Somerville, NJ | 2020 |
| John Kostides, DDS | 1841242179 | General Practice Dentistry | Merrillville, IN | 2006 |
| Athena Kostidis, MD | 1386624575 | Neurology Physician | Maywood, IL | 2006 |
| Faye Kostidis | 1184711624 | General Practice Dentistry | Griffith, IN | 2006 |
| John Kostidis, D.C. | 1639128929 | Chiropractor | Valparaiso, IN | 2006 |
| Spencer Kostielney, PHARMD | 1740645092 | Pharmacist | Desert Hot Springs, CA | 2015 |
| Casmira Kostigen, LICSW | 1982279568 | Social Worker | Brockton, MA | 2021 |
| Erin Kostigen | 1932440971 | Behavior Analyst | Natick, MA | 2013 |
| Tiffany Kostigen Mumper, LMFT | 1588844526 | Marriage & Family Therapist | Soquel, CA | 2007 |
| Marianne. Kostiha, RN | 1730599705 | Registered Nurse | Mentor, OH | 2014 |
| Amanda Kostik | 1962215160 | Behavior Technician | Fresno, CA | 2025 |
| Emily Kostik | 1275491375 | Speech-Language Pathologist | Ypsilanti, MI | 2026 |
| Corinna Kostikas, OTR/L | 1942894092 | Occupational Therapist | Brooklyn, NY | 2021 |
| Viktoriya Kostikian | 1053050146 | Family Nurse Practitioner | Pacific Palisades, CA | 2022 |
| Gabriela Kostikova | 1710262217 | Pharmacist | Linden, NJ | 2011 |
| Elizabeth Kostin, RPH | 1295747533 | Pharmacist | Hanover, PA | 2006 |
| Garrett Kostin | 1235501511 | Student in an Organized Health Care Education/Training Program | Seattle, WA | 2015 |
| Joanna Kostin | 1972185296 | Dentist | Branchburg, NJ | 2021 |
| Julia Kostin, MA, LMHC | 1558812156 | Mental Health Counselor | Vancouver, WA | 2016 |
| Maria Kostin | 1235321019 | School Counselor | Tucson, AZ | 2007 |
| Mark Kostin, M.D | 1790797322 | Internal Medicine Physician | Brooklyn, NY | 2006 |
| Michael Kostin | 1548894108 | Massage Therapist | Gresham, OR | 2020 |
| Raymond Kostin, MD | 1760444087 | Surgery Physician | Harrisburg, PA | 2006 |
| Shannon Kostin, MD | 1922567841 | Pediatrics Physician | Morristown, NJ | 2019 |
| Tricia Kostin, LCSW, LCADC | 1659511285 | Clinical Social Worker | Florham Park, NJ | 2009 |
| Vladislav Kostin, D.C. | 1649638073 | Chiropractor | Portland, OR | 2016 |
| Yury Kostin | 1467241067 | Contractor | Harrison Twp, MI | 2025 |
| Lori Kostin-Rosenberg, M.D. | 1487622080 | Psychiatry Physician | Riviera Beach, FL | 2006 |
| Alina Kostina, RD | 1154556959 | Registered Dietitian | Seattle, WA | 2009 |
| Yanina Kostina, M.D. | 1669442687 | Neuro-ophthalmology Physician | Waterbury, CT | 2006 |
| James Kostinas, D.C. | 1528193083 | Chiropractor | Ewing, NJ | 2007 |
| Sarah Kostinas, CPNP | 1255940466 | Pediatric Nurse Practitioner | Virginia Beach, VA | 2020 |
| Bobbi Kostinec, M.D. | 1740421809 | Family Medicine Physician | Plymouth, MN | 2009 |
| Anthony Kostiner, M.D. | 1760599849 | Diagnostic Radiology Physician | Portland, OR | 2006 |
| Geoffrey Kostiner, M.D. | 1235123530 | Urology Physician | Newport News, VA | 2005 |
| Rickie Kostiner, MA, LCPC | 1740866862 | Mental Health Counselor | Chicago, IL | 2021 |
| Shelly Kostiner, NP | 1548515554 | Adult Health Nurse Practitioner | Hampton, VA | 2012 |
| Mary Kostingo | 1457586802 | Physical Therapy Assistant | Plymouth Meeting, PA | 2009 |
| Lilliana Kostinski, D.D.S. | 1619189099 | General Practice Dentistry | Houghton, MI | 2007 |
| Yuriy Kostinski | 1720594872 | Registered Nurse | Rochester, NY | 2017 |
| Natalie Kostinsky, M.D. | 1205835881 | Family Medicine Physician | Crystal Lake, IL | 2005 |
| Spencer Kostinsky, MD | 1508072513 | Psychiatry Physician | Philadelphia, PA | 2007 |
| Sabreenah Kostiouk, MD | 1588501415 | Student in an Organized Health Care Education/Training Program | San Antonio, TX | 2026 |
| Ekaterina Kostioukhina, M.D. | 1407199185 | Internal Medicine Physician | Atlantis, FL | 2013 |
| Victoria Kostis, BS PHARMACY | 1154361426 | Pharmacist | East Windsor, NJ | 2006 |
| William Kostis, PH.D., M.D. | 1922203439 | Internal Medicine Physician | New Brunswick, NJ | 2007 |
| Amy Kostishack, MD | 1114001856 | Pediatrics Physician | San Jose, CA | 2006 |
| Meghan Kostishack | 1346012259 | Speech-Language Pathologist | Boulder, CO | 2023 |
| Erika Kostishak | 1447759014 | Behavior Analyst | Cherry Hill, NJ | 2018 |
| Nicholas Kostishak, PA-C, ATC | 1487085676 | Physician Assistant | New York, NY | 2013 |
| Paul Kostishak, PHARMD | 1326550716 | Pharmacist | Harrisburg, PA | 2017 |
| Peter Kostishak, CRNP | 1801372081 | Nurse Practitioner | Hershey, PA | 2018 |
| Alyshia Kostiuk | 1871067082 | Case Manager/Care Coordinator | Columbus, OH | 2019 |
| Andrew Kostiuk, M.D. | 1801452164 | Colon & Rectal Surgery Physician | Pittsburgh, PA | 2019 |
| Caroline Kostiuk | 1891375457 | Behavior Analyst | Chicago, IL | 2021 |
| Erica Kostiuk, RBT | 1770235343 | Behavior Technician | Akron, OH | 2022 |
| Lia Kostiuk, MD | 1881076255 | Public Health & General Preventive Medicine Physician | Madison, WI | 2015 |
| Marisa Kostiuk, PHD | 1376103614 | Clinical Psychologist | Westminster, CO | 2019 |
| Mary Kostiuk, MCD, CCC-SLP | 1669177135 | Speech-Language Pathologist | Medford, NJ | 2023 |
| Marybeth Kostiuk | 1932640398 | Family Medicine Physician | Novi, MI | 2017 |
| Megan Kostiuk, AMFT | 1578250387 | Marriage & Family Therapist | San Diego, CA | 2023 |
| Michael Kostiuk, D.O. | 1437680121 | Emergency Medicine Physician | Clinton Twp, MI | 2017 |
| Nichole Kostiuk, DMD | 1407424955 | General Practice Dentistry | Austin, TX | 2021 |
| Oleksandra Kostiuk | 1457186470 | Counselor | Hillsboro, OR | 2024 |
| Theodore Kostiuk, D.O. | 1952544876 | Orthopaedic Surgery of the Spine Physician | Holland, MI | 2009 |
| Valentyna Kostiuk | 1336983444 | Student in an Organized Health Care Education/Training Program | Palo Alto, CA | 2024 |
| Melissa Kostiuk-Kuczma, MSED, NCC, LPC | 1366644494 | Mental Health Counselor | Wilkinsburg, PA | 2007 |
| Quiana Kostiuk-Thompson | 1467007690 | Case Manager/Care Coordinator | Sacramento, CA | 2019 |
| Alex Kostiv, M.D. | 1639317217 | Family Medicine Physician | Vernon Hills, IL | 2009 |
| Inna Kostiv | 1235975012 | Home Health Aide | Parma, OH | 2024 |
| Lyudmila Kostiv, NP | 1447819271 | Family Nurse Practitioner | Syracuse, NY | 2019 |
| Nathan Kostiv, NNP-BC | 1023594579 | Critical Care Neonatal Nurse Practitioner | Carmichael, CA | 2018 |
| Tetyana Kostiv | 1376943639 | Occupational Health Chiropractor | Mundelein, IL | 2014 |
| Brielle Kostival | 1275934168 | Other Technician | Stuart, FL | 2014 |
| Jeanette Kostival | 1558748178 | Other Technician | Stuart, FL | 2015 |
| Leah Kostival | 1205429768 | Occupational Therapist | Parkersburg, WV | 2021 |
| Kimberly Kostiw | 1760712988 | Pharmacist | Surprise, AZ | 2010 |
| Irene Kostiwa, PH.D. | 1649675349 | Clinical Psychologist | Milwaukee, WI | 2014 |
| Stephanie Kostizen, MSW | 1679602445 | Social Worker | South Bend, IN | 2007 |
| Thomas Kostjal | 1477167872 | Mental Health Counselor | Los Angeles, CA | 2020 |
| Adam Kostka | 1285101279 | Physician Assistant | Hermitage, PA | 2018 |
| Alicja Kostka, PTA | 1356531800 | Physical Therapy Assistant | Bloomingdale, IL | 2007 |
| Anthony Kostka | 1639762495 | Pharmacist | Pittsburgh, PA | 2021 |
| Autumn Kostka, RBT | 1417569898 | Behavior Technician | Missoula, MT | 2020 |
| Constantina Kostka, PA | 1326596396 | Medical Physician Assistant | Brighton, MA | 2016 |
| Jane Kostka, LCSW | 1871655837 | Clinical Social Worker | Sacramento, CA | 2006 |
| Jessica Kostka, PHARM.D. | 1043595101 | Pharmacist | Shakopee, MN | 2011 |
| Julia Kostka, MD | 1295398782 | Infectious Disease Physician | Medford, OR | 2019 |
| Kalina Kostka | 1912550229 | Behavior Technician | Minneapolis, MN | 2019 |
| Kayla Kostka, PT | 1093327769 | Physical Therapist | Colorado Springs, CO | 2020 |
| Kevin Kostka, P.T. | 1265494876 | Physical Therapist | Hixson, TN | 2006 |
| Laurie Kostka, APNP | 1992840342 | Nurse Practitioner | Stevens Point, WI | 2007 |
| Mary Kostka, OTR/L | 1356580526 | Occupational Therapist | Leavenworth, WA | 2009 |
| Mykenzie Kostka | 1952191538 | Pharmacist | Indianapolis, IN | 2025 |
| Pat Kostka | 1346262383 | Registered Dietitian | Milwaukee, WI | 2006 |
| Philip Kostka, MD | 1720646409 | Emergency Medicine Physician | Weston, WI | 2019 |
| Rebecca Kostka, PA-C | 1144796749 | Medical Physician Assistant | Pittsburgh, PA | 2018 |
| Ronald Kostka, CSW | 1992761340 | Clinical Social Worker | Charlotte, MI | 2006 |
| Ryan Kostka, D.O. | 1023472107 | Surgical Critical Care Physician | Fort Worth, TX | 2016 |
| Shayna Kostka | 1346178829 | Pharmacist | Pittsburgh, PA | 2026 |
| Spencer Kostka | 1699563841 | Addiction (Substance Use Disorder) Counselor | Oshkosh, WI | 2025 |
| Timothy Kostka, RPH | 1164842720 | Pharmacist | Lewisville, TX | 2014 |
| Marcia Kostka-Suvelza, O.D. | 1811972680 | Optometrist | La Porte, IN | 2005 |
| Mark Kostko, DDS | 1790853323 | Dentist | Wheaton, IL | 2006 |
| Oksana Kostko, M.D. | 1740356344 | Pediatrics Physician | New York, NY | 2006 |
| Semyon Kostko, M.D. | 1467490896 | Internal Medicine Physician | Rego Park, NY | 2006 |
| Vera Kostko | 1548183742 | Student in an Organized Health Care Education/Training Program | San Francisco, CA | 2026 |
| Kathleen Kostkowski, CRNP | 1801809116 | Neonatal Nurse Practitioner | Baltimore, MD | 2006 |
| Jennifer Kostlan, M.A., CCC-SLP | 1619829421 | Speech-Language Pathologist | San Diego, CA | 2026 |
| Edward Kostlevy, R.PH. | 1992146906 | Pharmacist | Neillsville, WI | 2013 |
| Leonard Kostley, DMD | 1437231743 | Dentist | Ligonier, PA | 2006 |
| Jay Kostman, MD | 1720014962 | Infectious Disease Physician | Philadelphia, PA | 2006 |
| Madeleine Kostman, LMFT | 1720963044 | Marriage & Family Therapist | Los Angeles, CA | 2025 |
| Sherry Kostman, PSY.D. | 1891931770 | Clinical Psychologist | Greenville, SC | 2008 |
| Ski Kostman, LPCC | 1952181448 | Professional Counselor | Bismarck, ND | 2023 |
| Susan Kostman, CDP | 1356409684 | Addiction (Substance Use Disorder) Counselor | Vancouver, WA | 2006 |
| Tanya Kostman, M.T. | 1093905234 | Specialist | Brighton, CO | 2007 |
| Tori Kostman, MD | 1841130861 | Student in an Organized Health Care Education/Training Program | Sioux Falls, SD | 2026 |
| William Kostman, M.D. | 1912986506 | Orthopaedic Surgery Physician | Creve Coeur, MO | 2006 |
| Christian Kostmayer | 1952288847 | Certified Registered Nurse Anesthetist | Mobile, AL | 2025 |
| Erica Kostmayer, CRNP | 1306422464 | Pediatric Nurse Practitioner | Gulfport, MS | 2021 |
| Katherine Kostmayer | 1982862710 | Speech-Language Pathologist | Fairview, NC | 2008 |
| Paul Kostmayer, RN | 1427322437 | Critical Care Medicine Registered Nurse | Biloxi, MS | 2012 |
| Angela Kostner, APN-CNP | 1023406980 | Nurse Practitioner | Diamond, IL | 2014 |
| Delia Kostner, PH.D. | 1437311313 | Psychologist | Amherst, NH | 2008 |
| Justina Kostner, PT | 1215088448 | Physical Therapist | Kingman, KS | 2007 |
| Laura Kostner, RD | 1962751990 | Registered Dietitian | Leavenworth, KS | 2012 |
| Michelle Kostner, P.A. | 1891197943 | Medical Physician Assistant | San Diego, CA | 2014 |
| Tricia Kostner-Nicholson, M.S. CCC-SLP | 1407040736 | Speech-Language Pathologist | Broomfield, CO | 2007 |
| Kathleen Kostner-Rass, O.T.R. | 1336205244 | Occupational Therapist | Wausau, WI | 2006 |
| Bernard Kosto, MD | 1679565097 | Urology Physician | Hartford, CT | 2005 |
| Elizabeth Kosto, SLP | 1164824405 | Speech-Language Pathologist | Sykesville, MD | 2014 |
| Joseph Kosto, PHARMD | 1558817262 | Pharmacist | Collegeville, PA | 2016 |
| Klara Kosto, MS, LBA | 1023947314 | Behavior Analyst | Clinton Township, MI | 2026 |
| Thomas Kosto | 1326664640 | Addiction (Substance Use Disorder) Counselor | Lancaster, OH | 2020 |
| Joseph Kostock, D.C. | 1134223860 | Chiropractor | Wonder Lake, IL | 2006 |
| Kassandra Kostock, MSOT | 1073158937 | Occupational Therapist | Lake Geneva, WI | 2019 |
| Kathleen Kostock, LCSW | 1598784431 | Clinical Social Worker | Beach Park, IL | 2006 |
| Diana Kostoff, B.S.PHARM, PHARM.D. | 1366884314 | Oncology Pharmacist | Detroit, MI | 2013 |
| Emma Kostoff, MH, MPH | 1669314951 | Student in an Organized Health Care Education/Training Program | Middletown, CT | 2026 |
| Heather Kostoff, NP | 1568615318 | Family Nurse Practitioner | Corpus Christi, TX | 2008 |
| Kristi Kostoff, WHNP-BC | 1043887672 | Obstetrics & Gynecology Physician | Monroe, MI | 2021 |
| Marcia Kostoff, LPCC | 1902295405 | Mental Health Counselor | Urbana, OH | 2015 |
| Matthew Kostoff, PHARMD | 1306275904 | Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist | Cleveland, OH | 2013 |
| Nakoda Kostoff | 1275414096 | Home Modifications Contractor | Cincinnati, OH | 2025 |
| Nichole Kostoff, MOT,BS | 1568678274 | Occupational Therapist | Spokane Valley, WA | 2007 |
| Patricia Kostoff, MA | 1669976650 | Behavior Analyst | Longmont, CO | 2018 |
| Vasiliki Kostogiannes, ATS | 1356741219 | Physician Assistant | Baltimore, MD | 2014 |
| Fotini Kostogiannis, OD | 1689855892 | Optometrist | Brookline, MA | 2007 |
| John Kostoglou, DC | 1235203019 | Chiropractor | Parma, OH | 2006 |
| David Kostohryz, DDS | 1083894224 | Dentist | Houston, TX | 2007 |
| David Kostohryz, D.D.S | 1609022102 | General Practice Dentistry | Fort Worth, TX | 2008 |
| George Kostohryz, M.D. | 1821062357 | Otolaryngology Physician | Fort Worth, TX | 2006 |
| Georgia Kostohryz | 1689515405 | Registered Nurse | Tomah, WI | 2026 |
| Heather Kostohryz, LPC | 1417801820 | Professional Counselor | Moorhead, MN | 2026 |
| John Kostohryz, DDS | 1902919541 | Endodontics | Dallas, TX | 2006 |
| Anastas Kostojchin, MD | 1700407798 | Internal Medicine Physician | Lebanon, NH | 2020 |
| Lauren Kostok, AGACNP-BC | 1750903969 | Acute Care Nurse Practitioner | Greenville, NC | 2020 |
| Michael Kostok, CRNA | 1992261739 | Certified Registered Nurse Anesthetist | Greenville, NC | 2019 |
| Robert Kostok, PT | 1326054198 | Physical Therapist | Punxsutawney, PA | 2006 |
| Katarina Kostolanska, QMHA MA CMSMA | 1811480700 | Case Manager/Care Coordinator | Garfield Heights, OH | 2018 |
| Sean Kostolansky, D.O. | 1871976548 | Emergency Medicine Physician | Springfield, IL | 2015 |
| Stephanie Kostolansky | 1962357822 | Professional Counselor | Short Hills, NJ | 2026 |
| Alessandra Kostolias, M.D. | 1760774004 | Obstetrics & Gynecology Physician | Brooklyn, NY | 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).