Providers Ethan Nielsen, PA to Kristopher Nielsen, CO
300 individual NPIs in the federal registry, part 15,821 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. 90 link to a page of their own with Medicare and CMS data the registry does not carry.
| Provider | NPI | Specialty | Practice city | NPI issued |
|---|---|---|---|---|
| Ethan Nielsen, PA | 1154179844 | Physician Assistant | Provo, UT | 2024 |
| Eva Nielsen | 1346562931 | Massage Therapist | Edmonds, WA | 2010 |
| Evan Nielsen, MD | 1043527260 | Orthopaedic Surgery Physician | Provo, UT | 2010 |
| Ezra Nielsen, M.D. | 1881789188 | Family Medicine Physician | Corcoran, CA | 2006 |
| Faith Nielsen, CYT, MSW, LCSW | 1144821364 | Clinical Social Worker | Fort Collins, CO | 2020 |
| Faith Nielsen, MSW | 1376390559 | Clinical Social Worker | Kalamazoo, MI | 2024 |
| Felicia Nielsen, B.S. | 1588054142 | Social Worker | New Port Richey, FL | 2015 |
| Flannery Nielsen | 1184227472 | Registered Dietitian | San Diego, CA | 2020 |
| Florence Nielsen, CSW | 1366638405 | Clinical Social Worker | Farmington, UT | 2007 |
| Florin Nielsen, M.D. | 1508811639 | Obstetrics & Gynecology Physician | Price, UT | 2006 |
| Fresca Royce Nielsen | 1992392351 | Community Health Registered Nurse | Bakersfield, CA | 2020 |
| Gabriela Nielsen | 1801046420 | Mental Health Counselor | San Jose, CA | 2008 |
| Gabrielle Nielsen, OTRL | 1811175805 | Occupational Therapist | Eagle, ID | 2008 |
| Gabrielle Nielsen | 1831925221 | Athletic Trainer | Kirksville, MO | 2024 |
| Gail Nielsen, MHS,PT | 1801868625 | Physical Therapist | Wilton, CT | 2006 |
| Garet Nielsen, PT | 1114645231 | Physical Therapist | Murray, UT | 2022 |
| Garrett Nielsen | 1861050304 | Counselor | Taylorsville, UT | 2019 |
| Gerald Nielsen, DDS | 1972551349 | General Practice Dentistry | Wenatchee, WA | 2006 |
| Gordon Nielsen, RPH, PA | 1497856306 | Pharmacist | Redding, CA | 2006 |
| Grace Nielsen, LPCC | 1205701018 | Professional Counselor | Alamosa, CO | 2025 |
| Grace Nielsen | 1336944008 | Behavior Technician | Concord, CA | 2025 |
| Grace Nielsen | 1760935175 | Behavior Technician | St George, UT | 2016 |
| Grace Nielsen, PHARMD | 1861374464 | Pharmacist | Morgantown, WV | 2025 |
| Grace Nielsen, RN | 1932272499 | Community Health Registered Nurse | Provo, UT | 2006 |
| Gradon Nielsen, M.D. | 1669868774 | Hematology & Oncology Physician | Norfolk, VA | 2015 |
| Grant Nielsen, BS | 1871025148 | Counselor | Bremerton, WA | 2017 |
| Gregg Nielsen, D.C. | 1689623423 | Chiropractor | Waterford, WI | 2006 |
| Gregory Nielsen, MD | 1033277199 | Family Medicine Physician | Provo, UT | 2006 |
| Gregory Nielsen, DDS | 1518949742 | Oral & Maxillofacial Surgery (D.M.D.) | Huntington Woods, MI | 2005 |
| Gregory Nielsen, D.D.S. | 1578600318 | Endodontics | Billings, MT | 2007 |
| Gregory Nielsen | 1629606181 | General Practice Dentistry | North Billerica, MA | 2020 |
| Gregory Nielsen | 1851910087 | Psychiatry Physician | Highlands Ranch, CO | 2020 |
| Greta Nielsen, LCPC | 1912071077 | Professional Counselor | Palatine, IL | 2006 |
| Gunnlaugur Nielsen, MD | 1174592653 | Anatomic Pathology Physician | Boston, MA | 2006 |
| Hailee Nielsen, MD | 1821892688 | Student in an Organized Health Care Education/Training Program | Chicago, IL | 2025 |
| Hailyn Nielsen | 1306230669 | Rheumatology Physician | San Francisco, CA | 2015 |
| Halden Nielsen, DO | 1598343741 | Family Medicine Physician | Austin, MN | 2021 |
| Haley Nielsen | 1326976846 | Occupational Therapist | Hopkins, MN | 2026 |
| Haley Nielsen, RN | 1902371529 | Registered Nurse | Grafton, ND | 2018 |
| Hannah Nielsen | 1063366391 | Professional Counselor | Aurora, CO | 2026 |
| Hannah Nielsen, AUD | 1073121729 | Audiologist | College Station, TX | 2020 |
| Hannah Nielsen, BCBA | 1124651070 | Behavior Analyst | Louisville, KY | 2020 |
| Hannah Nielsen | 1225688815 | Case Manager/Care Coordinator | Provo, UT | 2019 |
| Hannah Nielsen | 1619447786 | Occupational Therapist | New Richmond, WI | 2018 |
| Hannah Nielsen | 1861063026 | Behavior Technician | Orange, CA | 2021 |
| Hayden Nielsen | 1992430532 | Clinical Social Worker | Charlotte, NC | 2022 |
| Heather Nielsen | 1215504436 | Pharmacist | Portland, OR | 2021 |
| Heather Nielsen, LPC | 1346665775 | Counselor | Portland, OR | 2014 |
| Heather Nielsen, DO | 1366861981 | Family Medicine Physician | Jacksonville, FL | 2014 |
| Heather Nielsen, DNP, APRN, CNP, FNP | 1386129492 | Family Nurse Practitioner | Rochester, MN | 2018 |
| Heather Nielsen, MPT | 1518612381 | Physical Therapist | Charlottesville, VA | 2022 |
| Heather Nielsen, M.S ED | 1780945675 | Specialist | Port Jefferson, NY | 2012 |
| Heather Nielsen | 1801476759 | Occupational Therapist | Greenwood, IN | 2021 |
| Heather Nielsen, DPT | 1821473984 | Physical Therapist | Lander, WY | 2015 |
| Heber Nielsen, MD | 1811005515 | Neonatal-Perinatal Medicine Physician | Boston, MA | 2006 |
| Heide Nielsen | 1477185361 | Acupuncturist | Novato, CA | 2020 |
| Heidi Nielsen, DPT | 1437553708 | Physical Therapist | Stanley, ND | 2014 |
| Henry Nielsen | 1669076451 | Peer Specialist | Nashua, NH | 2020 |
| Holly Nielsen, LMFT | 1306500871 | Marriage & Family Therapist | Chico, CA | 2021 |
| Holly Nielsen | 1780298059 | Registered Nurse | Logan, UT | 2020 |
| Hunter Nielsen, DO | 1013544915 | Emergency Medicine Physician | Charleston, WV | 2020 |
| Hyunju Nielsen, LCMFT | 1265997910 | Mental Health Counselor | Blythewood, SC | 2019 |
| Ian Nielsen | 1124755145 | Perfusionist | Brentwood, TN | 2022 |
| Irvin Nielsen, RPH | 1508053232 | Pharmacist | Salt Lake City, UT | 2007 |
| Jace Nielsen, PHARMD | 1053909366 | Pharmacist | Payson, UT | 2021 |
| Jackie Nielsen, LVN | 1184272064 | Licensed Vocational Nurse | Universal City, TX | 2019 |
| Jackson Nielsen, DO | 1427997998 | Student in an Organized Health Care Education/Training Program | Salt Lake City, UT | 2026 |
| Jacob Nielsen | 1134595853 | Counselor | Thatcher, UT | 2015 |
| Jacqueline Nielsen, APRN | 1184134611 | Adult Health Nurse Practitioner | Lakewood Ranch, FL | 2017 |
| Jacquelyn Nielsen, MS, RD, CDE | 1770569667 | Registered Dietitian | Fort Collins, CO | 2005 |
| Jade Nielsen | 1336731439 | Case Manager/Care Coordinator | Claremore, OK | 2021 |
| James Nielsen, M.D. | 1205806460 | Emergency Medicine Physician | Mitchell, SD | 2006 |
| James Nielsen, MD | 1295735710 | Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician | Pensacola, FL | 2005 |
| James Nielsen, DPT | 1356911127 | Physical Therapist | Woodsville, NH | 2021 |
| James Nielsen, M.D. | 1528181955 | Otolaryngology Physician | Salt Lake City, UT | 2007 |
| James Nielsen, D.D.S. | 1609017102 | Dentist | Van Alstyne, TX | 2009 |
| James Nielsen, M.D. | 1669432266 | Pediatric Cardiology Physician | East Setauket, NY | 2006 |
| James Nielsen, MD, FRCPC | 1730167495 | Psychiatry Physician | Ellisville, MO | 2006 |
| James Nielsen, RPH | 1831118132 | Pharmacist | Roy, UT | 2006 |
| Jamison Nielsen, D.O. | 1316020704 | Surgery Physician | Tacoma, WA | 2006 |
| Jan Nielsen | 1508307984 | Mental Health Counselor | Anchorage, AK | 2017 |
| Janae Nielsen | 1497062137 | Professional Counselor | Brigham City, UT | 2010 |
| Jane Nielsen, MA LPC | 1366505646 | Mental Health Counselor | Lynchburg, VA | 2006 |
| Janel Nielsen, D.O. | 1477743771 | Anesthesiology Physician | Dover, NH | 2007 |
| Janet Nielsen, M.D. | 1679773980 | Family Medicine Physician | Naperville, IL | 2007 |
| Janice Nielsen, LMSW,CSW,CFLE | 1699013482 | Mental Health Counselor | Twin Falls, ID | 2013 |
| Janice Nielsen, CCC-SLP | 1740583400 | Speech-Language Pathologist | Woodbury, MN | 2010 |
| Jared Nielsen, PT, DPT | 1366225732 | Physical Therapist | Phoenix, AZ | 2023 |
| Jared Nielsen, D.C. | 1366503831 | Chiropractor | Park City, UT | 2006 |
| Jared Nielsen, PA-C | 1932835311 | Physician Assistant | North Salt Lake, UT | 2022 |
| Jarl Nielsen, M.D. | 1245290287 | Ophthalmology Physician | Reno, NV | 2006 |
| Jason Nielsen | 1437013059 | Licensed Vocational Nurse | Rancho Cordova, CA | 2025 |
| Jason Nielsen | 1710504238 | Athletic Trainer | Missoula, MT | 2020 |
| Jason Nielsen, MD | 1730400649 | Surgery Physician | Green Valley, AZ | 2010 |
| Jay Nielsen, M.D. | 1982775268 | Family Medicine Physician | Maumee, OH | 2006 |
| Jayna Nielsen | 1205762697 | Marriage & Family Therapist | Spanish Fork, UT | 2026 |
| Jaynee Nielsen, OTR/L | 1275804122 | Occupational Therapist | Tampa, FL | 2012 |
| Jayson Nielsen | 1922404029 | Athletic Trainer | Ogden, UT | 2014 |
| Jean Nielsen, PT | 1487161675 | Physical Therapist | Grand Haven, MI | 2018 |
| Jeanette Nielsen | 1831902642 | Personal Care Attendant | Bellevue, NE | 2025 |
| Jeffery Nielsen, MD | 1528194461 | Emergency Medicine Physician | Saginaw, MI | 2007 |
| Jeffery Nielsen, RPH | 1548545692 | Pharmacist | Layton, UT | 2011 |
| Jeffrey Nielsen, R.PH. | 1093996431 | Pharmacist | Sioux Falls, SD | 2007 |
| Jeffrey Nielsen, M.D. | 1174630958 | Family Medicine Physician | Saint Charles, IL | 2006 |
| Jeffrey Nielsen, DPT | 1174715411 | Physical Therapist | Iowa City, IA | 2007 |
| Jeffrey Nielsen, D.D.S. | 1215158126 | General Practice Dentistry | Omaha, NE | 2007 |
| Jeffrey Nielsen, DPT | 1225836588 | Physical Therapist | Preston, ID | 2025 |
| Jeffrey Nielsen, PHARMD | 1275814485 | Pharmacist | Meridian, ID | 2011 |
| Jeffrey Nielsen, MD | 1386642593 | Surgery Physician | Cedar Rapids, IA | 2005 |
| Jeffrey Nielsen, DDS | 1700915170 | General Practice Dentistry | Crandon, WI | 2007 |
| Jeffrey Nielsen, MSW,MHP,RC | 1801957683 | Professional Counselor | Auburn, WA | 2006 |
| Jeffrey Nielsen, M.D. | 1841244787 | Nephrology Physician | Huntersville, NC | 2006 |
| Jen Nielsen, RN | 1568142321 | School Registered Nurse | Farmington, UT | 2023 |
| Jenna Nielsen, MSW, LCSW | 1447600846 | Clinical Social Worker | Lakeland, FL | 2016 |
| Jenna Nielsen, ARNP | 1649723446 | Family Nurse Practitioner | Iowa City, IA | 2016 |
| Jenna Nielsen | 1689122970 | Certified Registered Nurse Anesthetist | Saint Paul, MN | 2016 |
| Jennette Nielsen | 1952118804 | Mental Health Counselor | Monroe, WA | 2024 |
| Jennifer Nielsen, NP | 1043577356 | Acute Care Nurse Practitioner | Indianapolis, IN | 2012 |
| Jennifer Nielsen, OT | 1144085838 | Occupational Therapist | Mesa, AZ | 2024 |
| Jennifer Nielsen | 1164073664 | Neonatal Intensive Care Registered Nurse | New York, NY | 2019 |
| Jennifer Nielsen, PSYD | 1629587258 | Psychologist | Darien, CT | 2017 |
| Jennifer Nielsen, RN | 1760330781 | Registered Nurse | Bellevue, WA | 2026 |
| Jennifer Nielsen | 1821514779 | Student in an Organized Health Care Education/Training Program | Portales, NM | 2017 |
| Jennifer Nielsen | 1902116874 | Community Health Worker | Orem, UT | 2010 |
| Jenny Nielsen, PH.D., BCBA-D | 1205350634 | Psychologist | West Chester, PA | 2017 |
| Jenny Nielsen, PHARMD | 1912506189 | Pharmacist | Grand Rapids, MN | 2020 |
| Jens Nielsen, DDS | 1568202141 | Student in an Organized Health Care Education/Training Program | Louisville, KY | 2024 |
| Jeremiah Nielsen | 1396424461 | Peer Specialist | Oklahoma City, OK | 2023 |
| Jeremy Nielsen, M.D. | 1003127341 | Anesthesiology Physician | Flagstaff, AZ | 2010 |
| Jerod Nielsen | 1770206989 | Addiction (Substance Use Disorder) Counselor | Long Beach, CA | 2022 |
| Jessica Nielsen, FNP | 1023898376 | Family Nurse Practitioner | Slc, UT | 2023 |
| Jessica Nielsen, LICSW | 1215422076 | Clinical Social Worker | Bronx, NY | 2018 |
| Jessica Nielsen | 1326703893 | Social Worker | Albuquerque, NM | 2021 |
| Jessica Nielsen | 1447126644 | Surgical Assistant | San Antonio, TX | 2025 |
| Jessica Nielsen, MS, CCC-SLP | 1477236081 | Speech-Language Pathologist | Logan, UT | 2023 |
| Jessica Nielsen | 1669352423 | Counselor | Seattle, WA | 2025 |
| Jessica Nielsen | 1679412878 | Pediatric Nurse Practitioner | Kent, OH | 2026 |
| Jessie Nielsen, PA-C | 1629717665 | Physician Assistant | Alexandria, VA | 2022 |
| Jessie Nielsen | 1831813195 | Massage Therapist | Watertown, SD | 2022 |
| Jill Nielsen, NP | 1720135924 | Women's Health Nurse Practitioner | Patchogue, NY | 2007 |
| Jill Nielsen, N.P. | 1962503730 | Nurse Practitioner | Blairsville, GA | 2006 |
| Jillian Nielsen, RD, CSP, LD, CNSC | 1255109054 | Registered Dietitian | Biddeford, ME | 2023 |
| Jinae Nielsen, LMT | 1689491896 | Massage Therapist | Portland, OR | 2024 |
| Jo Nielsen, M.D. | 1528006921 | Pediatrics Physician | Oregon City, OR | 2006 |
| Jody Nielsen, MD | 1972931954 | Forensic Pathology Physician | Cantonment, FL | 2013 |
| Joe Nielsen, M.D. | 1992766885 | Specialist | Bountiful, UT | 2006 |
| Joel Nielsen, DO | 1528070455 | Diagnostic Radiology Physician | Weston, WI | 2006 |
| Joelle Nielsen, LMHC | 1265879951 | Mental Health Counselor | Decorah, IA | 2013 |
| Johanna Nielsen, PHD | 1861231847 | Clinical Psychologist | Concord, MA | 2024 |
| John Nielsen, M.D. | 1003811415 | Family Medicine Physician | Marinette, WI | 2005 |
| John Nielsen, MFT LPC | 1083031009 | Professional Counselor | Denver, CO | 2014 |
| John Nielsen, RD | 1083231609 | Registered Dietitian | Ankeny, IA | 2020 |
| John Nielsen, LPN | 1093177735 | Licensed Practical Nurse | Rochester, NY | 2016 |
| John Nielsen, LCSW | 1144062092 | Clinical Social Worker | Payson, UT | 2024 |
| John Nielsen, FNP | 1477965275 | Family Nurse Practitioner | West Jordan, UT | 2014 |
| John Nielsen, LMSW | 1497855928 | Social Worker | Caledonia, MI | 2006 |
| John Nielsen, PT | 1508186669 | Physical Therapist | Seattle, WA | 2010 |
| John Nielsen, RPH | 1508520297 | Pharmacist | Spokane, WA | 2021 |
| John Nielsen, PA | 1760465298 | Medical Physician Assistant | Wilmington, NC | 2005 |
| John Nielsen, DMD | 1760491906 | General Practice Dentistry | Cullman, AL | 2006 |
| John Nielsen, DPM | 1821186263 | Podiatrist | Rockford, IL | 2006 |
| Jon Nielsen, MD | 1063523850 | Obstetrics & Gynecology Physician | Crystal, MN | 2006 |
| Jon Nielsen, PHARMD | 1750609814 | Pharmacist | Longview, WA | 2010 |
| Jon Nielsen, MD, MPH | 1851684120 | Diagnostic Radiology Physician | Englewood, CO | 2011 |
| Jonathan Nielsen | 1053975516 | Social Worker | West Valley City, UT | 2019 |
| Jonathan Nielsen, MD | 1477312957 | Family Medicine Physician | Provo, UT | 2024 |
| Jonathan Nielsen | 1508645342 | Technician/Technologist | Orion Charter Township, MI | 2023 |
| Jonathan Nielsen | 1609755966 | Behavior Technician | Colorado Springs, CO | 2025 |
| Jordan Nielsen | 1053066563 | Mental Health Counselor | Minnetonka, MN | 2022 |
| Jordan Nielsen | 1174419113 | Mental Health Counselor | Wilmette, IL | 2025 |
| Joseph Nielsen, DDS | 1578527818 | General Practice Dentistry | Phoenix, AZ | 2006 |
| Joshua Nielsen, OTR | 1114938289 | Occupational Therapist | Wausau, WI | 2006 |
| Joshua Nielsen | 1326755042 | Mental Health Counselor | Brookings, OR | 2022 |
| Joshua Nielsen, MD | 1376048934 | Nuclear Radiology Physician | Fort Sam Houston, TX | 2018 |
| Joshua Nielsen | 1598105462 | Mental Health Counselor | Pocatello, ID | 2013 |
| Joshua Nielsen | 1659262657 | Physician Assistant | Price, UT | 2025 |
| Joy Nielsen, M.D. | 1083618706 | Urology Physician | Austin, TX | 2005 |
| Judith Nielsen, M.D. | 1093871634 | Internal Medicine Physician | Federal Way, WA | 2006 |
| Julia Nielsen, MD | 1235690496 | Emergency Medicine Physician | Houston, TX | 2019 |
| Julia Nielsen | 1619426848 | Occupational Therapy Assistant | La Crosse, WI | 2016 |
| Julia Nielsen, PT | 1679926695 | Physical Therapist | Midland, MI | 2016 |
| Juliann Nielsen, MS, RD, LDN | 1073790119 | Registered Dietitian | Newtown, PA | 2008 |
| Julie Nielsen, ARNP | 1144883422 | Family Medicine Physician | Elk Horn, IA | 2019 |
| Julie Nielsen, HAD | 1255704896 | Hearing Instrument Specialist | Torrance, CA | 2015 |
| Julie Nielsen | 1295359651 | Family Nurse Practitioner | Draper, UT | 2020 |
| Julie Nielsen | 1326697202 | Case Manager/Care Coordinator | Salt Lake City, UT | 2019 |
| Julie Nielsen, PA | 1588618003 | Physician Assistant | Sioux Falls, SD | 2006 |
| Julie Nielsen, DDS | 1861648073 | Dentist | Orange, CA | 2008 |
| Julie Nielsen | 1871189209 | Addiction (Substance Use Disorder) Counselor | Vista, CA | 2020 |
| Julie Nielsen, RN | 1881455673 | Registered Nurse | Lewiston, ID | 2024 |
| Juliette Nielsen, LMSW | 1225669542 | Social Worker | Clare, MI | 2020 |
| Justin Nielsen, CADCII | 1124324330 | Addiction (Substance Use Disorder) Counselor | Keizer, OR | 2011 |
| Justin Nielsen, MA, LPC, ACT | 1184193740 | Mental Health Counselor | Sioux Falls, SD | 2018 |
| Justin Nielsen, PAC | 1235443193 | Physician Assistant | Idaho Falls, ID | 2010 |
| Justin Nielsen, DC | 1447771050 | Chiropractor | Omaha, NE | 2017 |
| Justin Nielsen | 1740727221 | Certified Registered Nurse Anesthetist | Idaho Falls, ID | 2017 |
| K. Blake Nielsen, D.C. | 1952478646 | Chiropractor | Spokane, WA | 2006 |
| Kaili Nielsen, DPT | 1487259677 | Physical Medicine & Rehabilitation Physician | Juneau, AK | 2020 |
| Kaitlyn Nielsen | 1124910666 | Behavior Technician | Oklahoma City, OK | 2025 |
| Kalli Nielsen, SLP | 1689024929 | Speech-Language Pathologist | Victoria, MN | 2016 |
| Karen Nielsen, LPC | 1184900672 | Mental Health Counselor | Coos Bay, OR | 2011 |
| Karen Nielsen, L.AC., MSOM | 1326196098 | Acupuncturist | Saint Cloud, MN | 2007 |
| Karen Nielsen, LCSW, MSW | 1376524496 | Clinical Social Worker | Loveland, CO | 2005 |
| Karen Nielsen, LICSW | 1407120793 | Clinical Social Worker | Peabody, MA | 2012 |
| Karen Nielsen, RN,CDE | 1437423357 | Diabetes Educator Registered Nurse | Burlington, KS | 2012 |
| Karen Nielsen | 1467837518 | Licensed Practical Nurse | Gentry, AR | 2015 |
| Karen Nielsen, RN | 1518464700 | Registered Nurse | Santa Fe, NM | 2018 |
| Karen Nielsen, D.O. | 1568651198 | General Practice Physician | New York, NY | 2007 |
| Karen Nielsen | 1902980816 | Anesthesiology Physician | Durham, NC | 2006 |
| Karin Nielsen, PA | 1013033265 | Physician Assistant | Woodland Hills, CA | 2007 |
| Karin Nielsen, M.D. | 1194832469 | Pediatric Infectious Diseases Physician | Los Angeles, CA | 2006 |
| Karin Nielsen, MSPT | 1306639455 | Physical Therapist | Lawrence, KS | 2025 |
| Karli Nielsen | 1245173996 | Physical Therapist | Richfield, MN | 2026 |
| Karn Nielsen, CDPT | 1104268929 | Addiction (Substance Use Disorder) Counselor | Spokane, WA | 2013 |
| Karrie Nielsen | 1710225461 | Community Health Worker | Evanston, WY | 2013 |
| Kassandra Nielsen, RNFA, CNOR, BSN | 1275106494 | Registered Nurse First Assistant | Conroe, TX | 2021 |
| Kate Nielsen, LCSW | 1043594989 | Clinical Social Worker | Denver, CO | 2011 |
| Kate Nielsen, PH.D. | 1104066869 | Clinical Psychologist | Providence, RI | 2009 |
| Katelyn Nielsen | 1023967718 | Behavior Technician | Chesterfield, MI | 2026 |
| Katelyn Nielsen, DC | 1336965433 | Chiropractor | Milbank, SD | 2024 |
| Katelyn Nielsen, DC | 1568922045 | Chiropractor | Oconomowoc, WI | 2019 |
| Katelyn Nielsen, MD | 1619662848 | Emergency Medicine Physician | Rancho Mirage, CA | 2023 |
| Katelyn Nielsen | 1649900663 | Physician Assistant | Ontario, OR | 2022 |
| Katelynn Nielsen | 1326579145 | Behavior Technician | Centennial, CO | 2017 |
| Katherine Nielsen, R.PH. | 1508209131 | Pharmacist | Clearwater, FL | 2013 |
| Katherine Nielsen | 1598129249 | Pediatrics Physician | Torrance, CA | 2016 |
| Katherine Nielsen, L.AC. | 1700678869 | Acupuncturist | Philadelphia, PA | 2025 |
| Katherine Nielsen | 1821572488 | Registered Dietitian | Reno, NV | 2018 |
| Kathleen Nielsen, LMHC | 1144011628 | Mental Health Counselor | Greenfield, MA | 2025 |
| Kathleen Nielsen, OTR/L, CHT | 1245548338 | Hand Occupational Therapist | Bellevue, WA | 2010 |
| Kathleen Nielsen, PA | 1336196757 | Physician Assistant | Meridian, ID | 2006 |
| Kathleen Nielsen, APRN BC | 1700970837 | Adult Psychiatric/Mental Health Clinical Nurse Specialist | Concord, NH | 2006 |
| Kathryn Nielsen | 1164174173 | Behavior Technician | Monrovia, CA | 2022 |
| Kathryn Nielsen, RN CNM | 1245266683 | Advanced Practice Midwife | Salem, OR | 2006 |
| Kathryn Nielsen, M.S., SLP | 1528948759 | Speech-Language Pathologist | Chesapeake, VA | 2025 |
| Kathryn Nielsen, NP | 1619416674 | Primary Care Nurse Practitioner | Idaho Falls, ID | 2017 |
| Katie Nielsen, MD | 1528160595 | Pediatric Critical Care Medicine Physician | Seattle, WA | 2006 |
| Katisha Nielsen, R.D | 1073786067 | Registered Dietitian | Glendale Heights, IL | 2008 |
| Katlyn Nielsen | 1154978435 | Technician/Technologist | Bingham Farms, MI | 2019 |
| Katrina Nielsen | 1124832753 | Behavior Technician | West Jordan, UT | 2025 |
| Kayla Nielsen | 1871947507 | Community Health Worker | San Francisco, CA | 2016 |
| Kelli Nielsen, LPCC | 1780491662 | Professional Counselor | Pasadena, CA | 2024 |
| Kelli Nielsen, MS, SLP | 1811208093 | Speech-Language Pathologist | Nashville, TN | 2010 |
| Kellie Nielsen, IBCLC, RN | 1013692557 | Lactation Consultant (Registered Nurse) | Des Moines, IA | 2023 |
| Kellie Nielsen, LPC | 1225950207 | Professional Counselor | Mitchell, SD | 2026 |
| Kellie Nielsen, DPT | 1548813280 | Pediatric Physical Therapist | Davis, CA | 2019 |
| Kellie Nielsen, APRN, FNP | 1992154777 | Family Nurse Practitioner | Brigham City, UT | 2016 |
| Kelly Nielsen, PHARMD | 1073923892 | Pharmacist | Mount Pleasant, MI | 2014 |
| Kelly Nielsen, ST | 1639900798 | Speech-Language Pathologist | Chandler, AZ | 2024 |
| Kelly Nielsen, NP | 1942941521 | Adult Health Nurse Practitioner | Aurora, CO | 2022 |
| Kelsey Nielsen | 1275130007 | Case Manager/Care Coordinator | Salt Lake City, UT | 2020 |
| Kelsey Nielsen | 1407329493 | Behavior Analyst | San Diego, CA | 2019 |
| Kelsey Nielsen, AU.D. | 1689988669 | Audiologist | Fairfax, VA | 2010 |
| Keltie Nielsen, LPC | 1982312971 | Counselor | Detroit, MI | 2022 |
| Kendra Nielsen | 1225651110 | Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist | Brooklyn, NY | 2020 |
| Kenna Nielsen, DPT | 1437097227 | Physical Therapist | North Fort Myers, FL | 2026 |
| Kenneth Nielsen, MD | 1780761643 | Nuclear Medicine Physician | Santa Clara, CA | 2006 |
| Kent Nielsen, AU.D. | 1689744138 | Audiologist-Hearing Aid Fitter | Ogden, UT | 2006 |
| Kerri Nielsen, LCSW | 1992097414 | Clinical Social Worker | Sandy, UT | 2011 |
| Kevin Nielsen, DDS | 1194958975 | Dentist | Lacey, WA | 2009 |
| Kevin Nielsen, LICSW | 1457652802 | Clinical Social Worker | South Burlington, VT | 2010 |
| Kevin Nielsen, RPH | 1497342695 | Pharmacist | Bogalusa, LA | 2020 |
| Kevin Nielsen, MS | 1912611047 | Counselor | Mesa, AZ | 2023 |
| Kewin Nielsen, DPT | 1649839564 | Physical Therapist | Huntsville, AL | 2019 |
| Khale Nielsen | 1861177933 | Behavior Technician | Orem, UT | 2023 |
| Kiara Nielsen | 1881327575 | Homemaker | Granville, ND | 2022 |
| Kiersten Nielsen, DO | 1497457337 | Student in an Organized Health Care Education/Training Program | Orange Park, FL | 2023 |
| Kiley Nielsen | 1619671773 | Behavior Technician | New Bern, NC | 2023 |
| Killeen Nielsen, FNP | 1962513119 | Family Nurse Practitioner | Missoula, MT | 2006 |
| Kim Nielsen | 1073375697 | Student in an Organized Health Care Education/Training Program | Beverly Hills, CA | 2024 |
| Kimberley Nielsen, D.C. | 1508933193 | Chiropractor | Spokane, WA | 2006 |
| Kimberly Nielsen | 1063188241 | Mental Health Counselor | Mansfield, TX | 2021 |
| Kimberly Nielsen, PT | 1285613083 | Physical Therapist | Brick, NJ | 2006 |
| Kimberly Nielsen, AGACNP | 1295384352 | Acute Care Nurse Practitioner | Beachwood, OH | 2019 |
| Kimberly Nielsen, R.PH. | 1457743965 | Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist | Sun Prairie, WI | 2015 |
| Kimberly Nielsen | 1740934736 | Professional Counselor | Savannah, GA | 2022 |
| Kimberly Nielsen, LMFT | 1811465925 | Marriage & Family Therapist | San Jose, CA | 2018 |
| Kimberly Nielsen | 1811918675 | Nurse Practitioner | Eden Prairie, MN | 2006 |
| Kimberly Nielsen, LCSW | 1922143833 | Social Worker | Phoenix, AZ | 2007 |
| Kip Nielsen, D.M.D. | 1649646795 | Dentist | Suprise, AZ | 2015 |
| Kirsten Nielsen, M.D. | 1184825507 | Pediatrics Physician | Miami, FL | 2007 |
| Kirsten Nielsen, PT, PHD | 1245570589 | Physical Therapist | Syracuse, NY | 2013 |
| Kirsten Nielsen, LPC | 1801033840 | Professional Counselor | Elkin, NC | 2009 |
| Kirsten Nielsen, N.D. | 1821308008 | Naturopath | Burlington, VT | 2010 |
| Kirsten Nielsen, MD | 1891831053 | Neurology Physician | Golden, CO | 2007 |
| Kirsten Nielsen, R.D. | 1972544278 | Registered Dietitian | Saint Paul, MN | 2006 |
| Kolton Nielsen | 1265158349 | Case Manager/Care Coordinator | Taylorsville, UT | 2022 |
| Kourtney Nielsen, LPC | 1770820904 | Mental Health Counselor | Chester, PA | 2013 |
| Krista Nielsen, APRN | 1023249893 | Family Nurse Practitioner | Casa Grande, AZ | 2009 |
| Kristen Nielsen | 1235252636 | Case Manager/Care Coordinator | San Diego, CA | 2007 |
| Kristian Nielsen, CRNA | 1346266491 | Certified Registered Nurse Anesthetist | Austin, TX | 2006 |
| Kristin Nielsen, MS, LMFT, MHP | 1326323510 | Marriage & Family Therapist | Seattle, WA | 2011 |
| Kristin Nielsen, MD | 1831100080 | Internal Medicine Physician | Redwood City, CA | 2006 |
| Kristin Nielsen, MA, MACL, LPC | 1952896680 | Professional Counselor | Chicago, IL | 2018 |
| Kristina Nielsen | 1104703156 | Doula | Lynnwood, WA | 2025 |
| Kristina Nielsen, PT | 1205458106 | Geriatric Physical Therapist | Santa Barbara, CA | 2020 |
| Kristina Nielsen, APNP | 1366206351 | Family Nurse Practitioner | Fond Du Lac, WI | 2024 |
| Kristina Nielsen | 1417791161 | Behavior Technician | Killeen, TX | 2024 |
| Kristina Nielsen, DC | 1871036285 | Chiropractor | Spokane, WA | 2016 |
| Kristopher Nielsen, CO | 1295040012 | Orthotist | Portland, OR | 2010 |
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).