Providers Lisa Irwin, MSN, RN to William Irwin, D.D.S.
300 individual NPIs in the federal registry, part 10,203 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. 100 link to a page of their own with Medicare and CMS data the registry does not carry.
| Provider | NPI | Specialty | Practice city | NPI issued |
|---|---|---|---|---|
| Lisa Irwin, MSN, RN | 1962366492 | Case Manager/Care Coordinator | Iowa City, IA | 2025 |
| London Irwin, LPC | 1619712858 | Professional Counselor | Decatur, GA | 2024 |
| Lora Irwin, WHNP | 1154306546 | Women's Health Nurse Practitioner | Knoxville, TN | 2005 |
| Lori Irwin | 1023599818 | Speech-Language Pathologist | Dublin, OH | 2018 |
| Lori Irwin | 1376766394 | Pediatric Occupational Therapist | Mundelein, IL | 2007 |
| Lori Irwin | 1972128908 | Pharmacist | Storm Lake, IA | 2020 |
| Louis Irwin, M.D. | 1346327749 | Anesthesiology Physician | Bangor, ME | 2006 |
| Louis Irwin, LCSW | 1447332796 | Clinical Social Worker | Metairie, LA | 2006 |
| Lucas Irwin, D.O. | 1023544210 | Family Medicine Physician | Philipsburg, PA | 2017 |
| Luke Irwin, MD | 1073208773 | Internal Medicine Physician | San Diego, CA | 2023 |
| Lydia Irwin, SW | 1316110034 | Social Worker | Albany, KY | 2008 |
| Lyndsay Irwin, BA | 1669864898 | Other Technician | Wayne, MI | 2015 |
| Lynn Irwin, PSYA. D. | 1306215371 | Psychoanalyst | Bradford, VT | 2015 |
| Mackenzie Irwin, RBT | 1225640089 | Behavior Technician | Oshkosh, WI | 2020 |
| Mackenzie Irwin | 1649737438 | Clinical Social Worker | Charlotte, NC | 2019 |
| Mackenzie Irwin, FNP-C | 1952139255 | Nurse Practitioner | Grand Forks, ND | 2024 |
| Madeline Irwin, OTD, R/L | 1477472918 | Pediatric Occupational Therapist | Fond Du Lac, WI | 2026 |
| Madeline Irwin, PT, DPT | 1740948488 | Physical Therapist | Framingham, MA | 2021 |
| Madeline Irwin | 1811608201 | Case Manager/Care Coordinator | Vancouver, WA | 2022 |
| Madison Irwin, PHARMD | 1851246581 | Pain Management Pharmacist | Ann Arbor, MI | 2026 |
| Malorie Irwin | 1477925527 | Family Nurse Practitioner | Baton Rouge, LA | 2015 |
| Manasa Irwin, MD | 1023292117 | Family Medicine Physician | Monroeville, PA | 2007 |
| Mandi Irwin, RD, LDN | 1811409121 | Registered Dietitian | Mocksville, NC | 2017 |
| Mara Irwin, LCPC | 1609382399 | Professional Counselor | Takoma Park, MD | 2017 |
| Marc Irwin, PH.D. | 1386951978 | Psychologist | Farmington, NM | 2010 |
| Marc Irwin, MD | 1972514974 | Family Medicine Physician | Canyon, TX | 2006 |
| Marcyan Irwin, MSW, LMSW | 1356766687 | Clinical Social Worker | Jackson, MI | 2014 |
| Margaret Irwin, P.T. | 1467769356 | Physical Therapist | Boscawen, NH | 2010 |
| Maria Irwin | 1215853627 | Community Health Worker | Ammon, ID | 2026 |
| Maria Irwin | 1477080737 | Cognitive & Behavioral Psychologist | Sunrise, FL | 2017 |
| Maria Irwin, LPC | 1700302403 | Professional Counselor | Savannah, GA | 2017 |
| Marilyn Irwin | 1801027461 | Social Worker | Spokane, WA | 2009 |
| Marisa Irwin, RN | 1467712489 | Psychiatric/Mental Health Registered Nurse | Ravenna, OH | 2012 |
| Mark Irwin | 1104453588 | Infectious Disease Physician | Knoxville, TN | 2020 |
| Mark Irwin, M.D. | 1366433567 | Internal Medicine Physician | Belleville, IL | 2005 |
| Mark Irwin, M.D. | 1508860263 | Urology Physician | Brooklyn, NY | 2005 |
| Martha Irwin, LICSW | 1699857276 | Clinical Social Worker | Somerville, MA | 2006 |
| Martin Irwin | 1215873799 | Mental Health Counselor | Westampton, NJ | 2026 |
| Martin Irwin, M.D. | 1427235993 | Psychiatry Physician | Tarrytown, NY | 2008 |
| Mary Irwin, MD | 1114629771 | Student in an Organized Health Care Education/Training Program | Cleveland, OH | 2023 |
| Mary Irwin, LSW | 1174956577 | Social Worker | Portsmouth, OH | 2013 |
| Mary Irwin, RN FNP | 1417197781 | Family Nurse Practitioner | Paradise, CA | 2009 |
| Mary Irwin | 1457958688 | Physical Therapist | Carbondale, CO | 2020 |
| Mary Irwin, R.N. | 1760759427 | Registered Nurse | Massapequa Park, NY | 2011 |
| Mary Irwin, PT | 1821609314 | Physical Therapist | San Jose, CA | 2020 |
| Mary (katie) Irwin, MSW | 1508218827 | Social Worker | Campbellsville, KY | 2016 |
| Mashelle Irwin, RN | 1437366739 | Registered Nurse | Macy, NE | 2007 |
| Matthew Irwin, M.D. | 1205862364 | Anesthesiology Physician | Eau Claire, WI | 2006 |
| Matthew Irwin, DC | 1306957402 | Chiropractor | Irwin, PA | 2006 |
| Matthew Irwin, D.O. | 1366693335 | Orthopaedic Surgery Physician | Sebring, FL | 2008 |
| Matthew Irwin, PA-C | 1588469381 | Physician Assistant | Manchester, NJ | 2025 |
| Matthew Irwin, LPN | 1598125668 | Licensed Practical Nurse | Canton, OH | 2016 |
| Matthew Irwin, PHARMD | 1821771254 | Pharmacist | Jupiter, FL | 2023 |
| Matthew Irwin, MD | 1831157601 | Family Medicine Physician | Falls Church, VA | 2006 |
| Megan Irwin, NP | 1023365954 | Acute Care Nurse Practitioner | Detroit, MI | 2012 |
| Megan Irwin, PA-C | 1326309113 | Medical Physician Assistant | Mount Vernon, WA | 2012 |
| Megan Irwin, LCSW | 1326630310 | Clinical Social Worker | Los Angeles, CA | 2021 |
| Meghan Irwin, D.C. | 1699380857 | Chiropractor | McKinney, TX | 2020 |
| Melanie Irwin, MD | 1518918358 | Pediatric Rehabilitation Medicine Physician | Orange, CA | 2006 |
| Melinda Irwin | 1770071219 | Case Manager/Care Coordinator | Columbus, OH | 2018 |
| Melissa Irwin, PA-C | 1437254653 | Medical Physician Assistant | Mansfield, OH | 2006 |
| Melissa Irwin, C.R.N.A. | 1467748376 | Certified Registered Nurse Anesthetist | Aurora, CO | 2011 |
| Melissa Irwin | 1891564555 | Psychiatric/Mental Health Nurse Practitioner | Poquoson, VA | 2023 |
| Melva Irwin, LMSW | 1710012265 | Mental Health Counselor | Benton, AR | 2007 |
| Meredith Irwin, M.D. | 1003115403 | Pediatrics Physician | Louisville, KY | 2011 |
| Meredith Irwin, CPNP | 1447284351 | Pediatric Cardiology Physician | Athens, GA | 2006 |
| Meredith Irwin | 1821576596 | Case Manager/Care Coordinator | Cincinnati, OH | 2018 |
| Michael Irwin | 1104775188 | Behavior Technician | Cherry Hill, NJ | 2026 |
| Michael Irwin, MD | 1134220718 | Psychiatry Physician | Los Angeles, CA | 2006 |
| Michael Irwin, PHARMD | 1306115340 | Pharmacist | Huntington Beach, CA | 2011 |
| Michael Irwin, PT | 1356422216 | Physical Therapist | Oak Ridge, TN | 2006 |
| Michael Irwin, DMD | 1467532135 | Orthodontics and Dentofacial Orthopedics Dentistry | Montgomery, AL | 2006 |
| Michael Irwin, LSW, MSW | 1477053296 | Clinical Social Worker | Columbus, OH | 2018 |
| Michael Irwin, M.D. | 1760446074 | Family Medicine Physician | Tampa, FL | 2006 |
| Michael Irwin | 1780481044 | Personal Care Attendant | Gretna, NE | 2025 |
| Michelle Irwin, DC | 1013281252 | Chiropractor | Kirkland, WA | 2012 |
| Michelle Irwin, OTR/L | 1295046993 | Pediatric Occupational Therapist | Auburn, ME | 2010 |
| Michelle Irwin, LPN | 1437459336 | Registered Nurse | Westerville, OH | 2010 |
| Michelle Irwin | 1619639804 | Behavior Technician | Gilbert, AZ | 2021 |
| Michelle Irwin | 1629889829 | Personal Care Attendant | Omaha, NE | 2025 |
| Mitch Irwin, M.S., SLP-CFY | 1902231681 | Speech-Language Pathologist | Brooklyn, NY | 2013 |
| Mitchell Irwin, MD | 1194792614 | Specialist | Wailuku, HI | 2006 |
| Mitchell Irwin | 1235597600 | Student in an Organized Health Care Education/Training Program | Mount Morris, MI | 2016 |
| Monette Irwin, L.C.S.W. | 1831135284 | Clinical Social Worker | Clayton, NC | 2006 |
| Morgan Irwin | 1154091049 | Behavior Technician | Dublin, CA | 2021 |
| Morgan Irwin, PA | 1447080775 | Physician Assistant | Milwaukee, WI | 2024 |
| Morgan Irwin, OTR/L | 1801246996 | Occupational Therapist | Morgantown, WV | 2016 |
| Nadine Irwin, LCSW | 1861537045 | Clinical Social Worker | New Hyde Park, NY | 2007 |
| Nancy Irwin, PSYD | 1437210762 | Clinical Psychologist | Los Angeles, CA | 2006 |
| Naowarat Irwin, M.A, R-DMT | 1740896331 | Mental Health Counselor | Belmont, MA | 2020 |
| Natalie Irwin, MPT | 1033758990 | Physical Therapist | Port Townsend, WA | 2019 |
| Natalie Irwin, CRNP | 1265806590 | Gerontology Clinical Nurse Specialist | Birmingham, AL | 2015 |
| Natalie Irwin, DPT | 1609203785 | Physical Therapist | Cathedral City, CA | 2013 |
| Nathan Irwin, D.C. | 1841210879 | Chiropractor | Fort Collins, CO | 2006 |
| Natosha Irwin | 1043536774 | Doula | Livonia, MI | 2010 |
| Nettie Irwin, MD | 1801475314 | Pediatrics Physician | Fairbanks, AK | 2021 |
| Nicholas Irwin, M.D. | 1952694671 | Emergency Medicine Physician | Lexington, KY | 2011 |
| Nichole Irwin, PT | 1205890266 | Physical Therapist | Pittsburgh, PA | 2006 |
| Nicole Irwin | 1063270460 | Peer Specialist | Cincinnati, OH | 2024 |
| Nicole Irwin, MSN, FNP-C | 1477095552 | Family Nurse Practitioner | Franklin, GA | 2016 |
| Nicole Irwin, LSW | 1770300139 | Clinical Social Worker | Middletown, OH | 2024 |
| Nicole Irwin, PT, DPT | 1982033049 | Physical Therapist | Minerva, OH | 2013 |
| Nikki Irwin | 1669204319 | Physical Therapist | Killeen, TX | 2024 |
| Paige Irwin, PT | 1942713508 | Physical Therapist | Coraopolis, PA | 2017 |
| Pamela Irwin, BCBA | 1972035723 | Behavior Analyst | Round Rock, TX | 2017 |
| Patricia Irwin | 1154940500 | Mental Health Counselor | Tampa, FL | 2020 |
| Patricia Irwin | 1447671102 | Intellectual & Developmental Disabilities Psychologist | Salem, NJ | 2013 |
| Patricia Irwin | 1588981567 | Speech-Language Pathologist | Kenmore, NY | 2010 |
| Patricia Irwin, F.N.P. | 1972540136 | Family Nurse Practitioner | Portsmouth, VA | 2006 |
| Patrick Irwin | 1326481128 | Urology Physician | Cleveland, OH | 2013 |
| Patrick Irwin, CNP | 1386514693 | Psychiatric/Mental Health Nurse Practitioner | Bismarck, ND | 2025 |
| Paul Irwin | 1740211903 | Physical Therapist | Red Wing, MN | 2006 |
| Paul Irwin, M.ED LPC ,NCC | 1972676161 | Professional Counselor | San Antonio, TX | 2006 |
| Paula Irwin, MS, AMFT, APCC | 1386409928 | Marriage & Family Therapist | Riverside, CA | 2024 |
| Peri Irwin, DDS | 1770140345 | General Practice Dentistry | Kansas City, MO | 2019 |
| Peter Irwin, M.D. | 1790759942 | Obstetrics & Gynecology Physician | Fort Worth, TX | 2006 |
| Philip Irwin, P. A. | 1760441356 | Surgical Physician Assistant | Gainesville, FL | 2006 |
| Polly Irwin, DOCTOR OF CHIROPRACT | 1912053927 | Chiropractor | Rochester, IN | 2007 |
| Priscilla Irwin | 1588346704 | Behavior Analyst | Portsmouth, OH | 2023 |
| R Irwin, M. D. | 1528093382 | Geriatric Medicine (Family Medicine) Physician | Polson, MT | 2006 |
| Rachel Irwin | 1558258590 | Behavior Analyst | Spokane Valley, WA | 2025 |
| Rachel Irwin | 1629592373 | Speech-Language Pathologist | Lewis Center, OH | 2017 |
| Rachel Irwin, FNP | 1700553542 | Family Nurse Practitioner | Kokomo, IN | 2021 |
| Rachel Irwin | 1750826632 | Behavior Technician | Manhattan, KS | 2016 |
| Raeanne Irwin, LPN | 1700029956 | Licensed Practical Nurse | Brooklyn, NY | 2009 |
| Randi Irwin, MA, LMHC | 1629542295 | Mental Health Counselor | South Bend, IN | 2019 |
| Randy Irwin, MD | 1811916224 | Vascular Surgery Physician | Indianapolis, IN | 2006 |
| Ray Irwin | 1205110491 | Pharmacist | La Follette, TN | 2011 |
| Reagan Irwin | 1720358849 | Licensed Practical Nurse | Cincinnati, OH | 2012 |
| Rebecca Irwin, PAC | 1154428530 | Surgical Physician Assistant | Morgantown, WV | 2006 |
| Rebecca Irwin | 1427716000 | Personal Care Attendant | Genoa, WV | 2021 |
| Rebecca Irwin, ND | 1902364177 | Naturopath | Santa Barbara, CA | 2019 |
| Rebecca Irwin, PA-C | 1992772982 | Physician Assistant | Brunswick, GA | 2006 |
| Rebekah Irwin, LPC-MHSP, LPC, NCC | 1609737899 | Mental Health Counselor | Chattanooga, TN | 2025 |
| Rebekah Irwin, APRN | 1770783714 | Adult Health Nurse Practitioner | Sioux Falls, SD | 2007 |
| Richard Irwin, AAS, CDP | 1013184225 | Addiction (Substance Use Disorder) Counselor | Seattle, WA | 2008 |
| Richard Irwin, O.D. | 1275516262 | Optometrist | Austin, TX | 2005 |
| Richard Irwin, MD | 1619950722 | Pulmonary Disease Physician | Worcester, MA | 2005 |
| Richard Irwin, M.D. | 1700871530 | Ophthalmology Physician | Putnam, CT | 2005 |
| Richard Irwin, OD | 1730236282 | Optometrist | Somerset, PA | 2007 |
| Riley Irwin, DPT | 1801501226 | Physical Therapist | Evergreen, CO | 2023 |
| Robert Irwin, DPM | 1093760753 | Podiatrist | Merrick, NY | 2006 |
| Robert Irwin, PH.D. | 1124238696 | Clinical Psychologist | Carlsbad, CA | 2007 |
| Robert Irwin, L.I.C.D.C. | 1154734697 | Addiction (Substance Use Disorder) Counselor | Saint Clairsville, OH | 2014 |
| Robert Irwin, M.D. | 1174640643 | Allergy Physician | Tupelo, MS | 2007 |
| Robert Irwin, MD | 1184716763 | Pediatrics Physician | Tacoma, WA | 2006 |
| Robert Irwin, RPH | 1184937104 | Pharmacist | State College, PA | 2010 |
| Robert Irwin, MD | 1205833068 | Pulmonary Disease Physician | Saratoga Springs, NY | 2005 |
| Robert Irwin, MD | 1215948039 | Internal Medicine Physician | Oro Valley, AZ | 2006 |
| Robert Irwin | 1235948530 | Behavior Technician | Monrovia, CA | 2025 |
| Robert Irwin, MD | 1245247535 | Emergency Medicine Physician | Fayetteville, AR | 2006 |
| Robert Irwin, RN | 1306798327 | Nurse Massage Therapist (NMT) | Sonora, CA | 2026 |
| Robert Irwin, C.O.T.A. | 1467774778 | Occupational Therapy Assistant | Briarwood, NY | 2010 |
| Robert Irwin, DC | 1528017928 | Chiropractor | Hendersonville, NC | 2006 |
| Robert Irwin, RPH | 1548231103 | Pharmacist | Hudsonville, MI | 2006 |
| Robert Irwin, DC | 1548289978 | Sports Physician Chiropractor | Delmar, NY | 2006 |
| Robert Irwin, M.D. | 1689648990 | Physical Medicine & Rehabilitation Physician | Miami, FL | 2006 |
| Robert Irwin | 1720325590 | Pharmacist | Stone Mountain, GA | 2013 |
| Robert Irwin, PA-C | 1801414495 | Physician Assistant | Zachary, LA | 2020 |
| Robert Irwin, OTR/L | 1851354963 | Hand Occupational Therapist | Mars, PA | 2006 |
| Robert Irwin, M.S., CCC-SLP | 1871617696 | Speech-Language Pathologist | Lewes, DE | 2007 |
| Robert 'Denny' Irwin, LAC | 1306935366 | Addiction (Substance Use Disorder) Counselor | Lewistown, MT | 2006 |
| Roberta Irwin | 1669901823 | Occupational Therapy Assistant | Merriam, KS | 2017 |
| Roberta Irwin, CMT, HHP | 1922334549 | Massage Therapist | San Diego, CA | 2009 |
| Robin Irwin, MSPT | 1063511905 | Physical Therapist | Decatur, AL | 2006 |
| Robin Irwin, LCSW | 1598991887 | Clinical Social Worker | Houston, TX | 2009 |
| Ronald Irwin, MD | 1750341509 | Orthopaedic Surgery Physician | Mt Clemens, MI | 2006 |
| Rosa Irwin | 1568895431 | Case Manager/Care Coordinator | Gilroy, CA | 2013 |
| Rosamund Irwin, MD | 1003903345 | Family Medicine Physician | Salem, OR | 2006 |
| Rosemary Irwin | 1003780057 | Licensed Practical Nurse | Lynnwood, WA | 2025 |
| Roxanne Irwin | 1316066327 | Marriage & Family Therapist | Lancaster, CA | 2007 |
| Ryan Irwin, MS, OTRL | 1215200514 | Occupational Therapist | Saginaw, MI | 2012 |
| Sally Irwin, O.D. | 1417118183 | Optometrist | Manhattan, KS | 2008 |
| Sally Irwin, RN | 1598951451 | School Registered Nurse | Georgetown, DE | 2007 |
| Samantha Irwin, NP | 1144828716 | Family Nurse Practitioner | Kansas City, MO | 2020 |
| Samantha Irwin, MB BCH BAO; FRCPC | 1184141012 | Neurology with Special Qualifications in Child Neurology Physician | Austin, TX | 2017 |
| Samantha Irwin, CRNA | 1659731636 | Certified Registered Nurse Anesthetist | Bristol, TN | 2016 |
| Samantha Irwin | 1811656697 | Behavior Technician | Orem, UT | 2021 |
| Sande Irwin, M.D. | 1437262094 | Otolaryngology Physician | Vancouver, WA | 2006 |
| Sandra Irwin, RNFA | 1245380021 | Registered Nurse First Assistant | Jupiter, FL | 2007 |
| Sandra Irwin | 1730211517 | School Social Worker | Phoenix, AZ | 2007 |
| Sara Irwin, LMHP, PLADC | 1184984361 | Counselor | Boys Town, NE | 2012 |
| Sara Irwin, M.D. | 1639321524 | Student in an Organized Health Care Education/Training Program | Vancouver, WA | 2008 |
| Sara Irwin | 1932698933 | Behavior Technician | Oakland, CA | 2018 |
| Sarah Irwin, M.S., CCC-SLP | 1053059774 | Speech-Language Pathologist | Great Bend, KS | 2022 |
| Sarah Irwin | 1134057664 | Behavior Technician | Conway, AR | 2026 |
| Sarah Irwin, MA, LPC | 1356527220 | Professional Counselor | Pittsburgh, PA | 2008 |
| Sarah Irwin, BA, RADT | 1427674704 | Addiction (Substance Use Disorder) Counselor | Los Angeles, CA | 2020 |
| Sarah Irwin, PLPC PLMFT | 1427874445 | Professional Counselor | Alexandria, LA | 2024 |
| Sarah Irwin | 1649650243 | Physical Therapist | Cary, NC | 2015 |
| Sarah Irwin | 1659879831 | Behavior Analyst | Athens, OH | 2018 |
| Sarah Irwin | 1942612619 | Speech-Language Pathologist | Portland, OR | 2014 |
| Sarah Irwin, DNP | 1992450456 | Family Nurse Practitioner | Springfield, MO | 2022 |
| Savannah Irwin | 1336730548 | Behavior Technician | El Cajon, CA | 2021 |
| Scott Irwin, P.T. | 1053515312 | Physical Therapist | Commack, NY | 2007 |
| Scott Irwin, MD | 1225117716 | Psychiatry Physician | San Diego, CA | 2006 |
| Scott Irwin, CRNA | 1437183969 | Nurse Practitioner | Radford, VA | 2006 |
| Scott Irwin, D.D.S., MPH | 1669460119 | Public Health Dentistry | Jbsa Lackland, TX | 2005 |
| Scott Irwin, LPC | 1730195264 | Professional Counselor | Dallas, TX | 2006 |
| Scott Irwin, B.A., CAS | 1861695975 | Addiction (Substance Use Disorder) Counselor | San Diego, CA | 2007 |
| Sean Irwin, OTR/L | 1225594807 | Occupational Therapist | Phoenix, AZ | 2019 |
| Shameka Irwin | 1396143657 | Mental Health Counselor | Brooklyn, NY | 2014 |
| Shane Irwin, HEARING AID DEALER | 1720483076 | Audiologist-Hearing Aid Fitter | Ironton, OH | 2014 |
| Shannon Irwin, DPT | 1407463680 | Physical Therapist | Emeryville, CA | 2020 |
| Shareeda Irwin, FNP | 1396458006 | Family Nurse Practitioner | La Vergne, TN | 2022 |
| Sharlotte Irwin | 1215645767 | Advanced Practice Midwife | Salem, OR | 2022 |
| Sharon Irwin, PH.D. | 1245339894 | Clinical Psychologist | Akron, OH | 2006 |
| Shaylynn Irwin | 1982329363 | Behavior Technician | Franklin, IN | 2022 |
| Sheila Irwin | 1447753595 | Adult Health Nurse Practitioner | Birmingham, AL | 2018 |
| Shelby Irwin, MD | 1336999705 | Student in an Organized Health Care Education/Training Program | Tampa, FL | 2024 |
| Shelby Irwin | 1821660911 | Counselor | Spokane, WA | 2021 |
| Shelby Irwin | 1982436937 | Registered Nurse | Omaha, NE | 2024 |
| Shelley Irwin, LPN | 1386941094 | Licensed Practical Nurse | Plymouth Meeting, PA | 2011 |
| Shiane Irwin, FNP | 1154115574 | Nurse Practitioner | Rochester, NY | 2025 |
| Shukura Irwin, MA, CCC-SLP | 1548624190 | Speech-Language Pathologist | Monrovia, CA | 2016 |
| Sierra Irwin | 1750900528 | Physical Therapist | Pierre, SD | 2020 |
| Silvina Irwin, PH.D. | 1881817864 | Clinical Psychologist | Pasadena, CA | 2007 |
| Siobhan Irwin, M.D. | 1306857131 | Pediatrics Physician | Wilmington, DE | 2006 |
| Stacey Irwin, COTA | 1063640498 | Occupational Therapy Assistant | Tupper Lake, NY | 2009 |
| Staci Irwin, L.M.T | 1205113594 | Massage Therapist | Edinboro, PA | 2011 |
| Stacy Irwin, LPC | 1023467040 | Mental Health Counselor | Oklahoma City, OK | 2016 |
| Stacy Irwin, ACNP | 1295083475 | Acute Care Nurse Practitioner | Canton, OH | 2012 |
| Stacy Irwin, MED. CCC-SLP | 1518276203 | Speech-Language Pathologist | Canton, GA | 2010 |
| Stacy Irwin, APN | 1811075070 | Pediatric Nurse Practitioner | Philadelphia, PA | 2006 |
| Stefanie Irwin | 1386504421 | Occupational Therapist | Erie, PA | 2025 |
| Stephanie Irwin, RDH | 1003046368 | Dental Hygienist | Crowley, TX | 2009 |
| Stephanie Irwin, BCBA | 1407330038 | Behavior Analyst | Riverside, CA | 2018 |
| Stephanie Irwin, DPT | 1437552569 | Physical Therapist | Seattle, WA | 2014 |
| Stephen Irwin, DMD | 1003847625 | Oral and Maxillofacial Pathology Dentistry | Sunbury, PA | 2006 |
| Stephen Irwin, LCSW | 1093404485 | Clinical Social Worker | San Francisco, CA | 2023 |
| Stephen Irwin, M.D. | 1699954172 | Interventional Pain Medicine Physician | Rogers, AR | 2007 |
| Stephen Irwin, MD | 1891371423 | Child & Adolescent Psychiatry Physician | Saint Louis, MO | 2021 |
| Steven Irwin | 1144467440 | Physical Therapist | Norwalk, CT | 2009 |
| Steven Irwin, D.MIN., LPC-S, BCC | 1194396028 | Mental Health Counselor | Saginaw, TX | 2021 |
| Steven Irwin, D.P.M. | 1366553919 | Foot Surgery Podiatrist | Chillicothe, OH | 2006 |
| Steven Irwin, DDS | 1720096803 | General Practice Dentistry | La Habra, CA | 2006 |
| Steven Irwin, DDS | 1902918220 | Dentist | Lees Summit, MO | 2006 |
| Sue Irwin, LCSW | 1588691661 | Clinical Social Worker | Birmingham, AL | 2006 |
| Susan Irwin, NCC, LPC, CCPD | 1043231772 | Professional Counselor | Downingtown, PA | 2006 |
| Susan Irwin, OTR/L | 1326478298 | Occupational Therapist | Lake Orion, MI | 2013 |
| Susan Irwin, M.S. | 1366745598 | Mental Health Counselor | Carbondale, IL | 2010 |
| Susan Irwin, P.T. | 1801185327 | Physical Therapist | Floresville, TX | 2011 |
| Susan Irwin | 1932564812 | Social Worker | Flint, MI | 2015 |
| Susana Irwin | 1669755674 | Day Training/Habilitation Specialist | Arcadia, CA | 2011 |
| Sydney Irwin, MSN, APRN, FNP-C | 1174198030 | Family Nurse Practitioner | Grass Lake, MI | 2021 |
| Sydney Irwin | 1316752363 | Family Nurse Practitioner | Saint Charles, MO | 2025 |
| Sylvia Irwin, DMD | 1043424815 | Dentist | Nutley, NJ | 2007 |
| Tammy Irwin, MS, CCC-SLP | 1255336293 | Speech-Language Pathologist | Winston Salem, NC | 2005 |
| Tara Irwin | 1578277570 | Mental Health Counselor | Westampton, NJ | 2023 |
| Taylor Irwin, PT, DPT | 1003535709 | Physical Therapist | Red Wing, MN | 2022 |
| Taylor Irwin | 1356918049 | Behavior Technician | Lakewood Ranch, FL | 2021 |
| Taylor Irwin, PA-C | 1407621469 | Physician Assistant | Vancouver, WA | 2023 |
| Taylor Irwin | 1437704152 | Behavior Technician | Brandon, FL | 2019 |
| Teia Irwin, FNP-BC | 1740891639 | Family Nurse Practitioner | Grand Blanc, MI | 2020 |
| Teresa Irwin, MD | 1255330064 | Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician | San Marcos, TX | 2005 |
| Terry Irwin | 1639924913 | Acute Care Nurse Practitioner | Austin, TX | 2024 |
| Terry Irwin, M.D. | 1699866160 | Internal Medicine Physician | Columbus, OH | 2006 |
| Terry Ann Irwin | 1972396232 | Licensed Practical Nurse | Jamaica, NY | 2025 |
| Tessa Irwin, PT, DPT | 1174093918 | Physical Therapist | Murfreesboro, TN | 2018 |
| Tessa Irwin | 1689340630 | Behavior Technician | Elk Grove, CA | 2021 |
| Thalia Irwin, M.S CCC-SLP | 1346117199 | Speech-Language Pathologist | Madison, TN | 2025 |
| Thomas Irwin, D.O. | 1083711378 | Internal Medicine Physician | Dalton, MA | 2006 |
| Thomas Irwin, DMD | 1124032875 | General Practice Dentistry | Bettendorf, IA | 2006 |
| Thomas Irwin, BA, DC | 1306989397 | Chiropractor | Gold Beach, OR | 2007 |
| Thomas Irwin | 1417623265 | Nurse Practitioner | Cleveland, OH | 2021 |
| Thomas Irwin, MD | 1467154245 | Student in an Organized Health Care Education/Training Program | Kansas City, MO | 2023 |
| Thomas Irwin, DMD | 1487760583 | Dentist | Philipsburg, PA | 2006 |
| Thomas Irwin, MSW, LCSW | 1538353230 | Clinical Social Worker | Saint Louis, MO | 2007 |
| Thomas Irwin, PT, DPT | 1588282099 | Physical Therapist | Toms River, NJ | 2020 |
| Thomas Irwin, MD | 1629172358 | Otolaryngology Physician | Marrero, LA | 2006 |
| Thomas Irwin, DC | 1942307699 | Chiropractor | Cherokee, IA | 2006 |
| Tiffany Irwin, LPC | 1164987913 | Professional Counselor | Eugene, OR | 2019 |
| Timothy Irwin, M.D. | 1033572961 | Surgery of the Hand (Plastic Surgery) Physician | Orlando, FL | 2016 |
| Timothy Irwin, M.D. | 1063622801 | Cardiovascular Disease Physician | Yankton, SD | 2007 |
| Timothy Irwin, PT, DPT | 1700458643 | Physical Therapist | Chattanooga, TN | 2021 |
| Todd Irwin, MD | 1386777191 | Orthopaedic Surgery Physician | Charlotte, NC | 2007 |
| Todd Irwin, DMD | 1548379290 | General Practice Dentistry | Port Angeles, WA | 2006 |
| Toni Irwin, D.M.D. | 1700876851 | General Practice Dentistry | Elizabethtown, KY | 2005 |
| Tracy Irwin, M.D. | 1295786994 | Obstetrics & Gynecology Physician | Chicago, IL | 2006 |
| Tracy Irwin | 1306734579 | Personal Care Attendant | Humboldt, NE | 2025 |
| Tracy Irwin, LCSW | 1356765978 | Clinical Social Worker | Louisville, KY | 2014 |
| Tracy Irwin | 1720951502 | Doula | Cornelius, OR | 2025 |
| Trent Irwin, MD | 1366948325 | Anatomic Pathology & Clinical Pathology Physician | Portland, OR | 2018 |
| Trisha Irwin, OTR/L | 1891417655 | Occupational Therapist | Port Arthur, TX | 2022 |
| Tucker Irwin, CRNA | 1801256987 | Certified Registered Nurse Anesthetist | Dallas, TX | 2016 |
| Vicki Irwin, L.AC. | 1790041952 | Acupuncturist | Nashua, NH | 2012 |
| Victoria Irwin | 1316800840 | Mental Health Counselor | Stowe, VT | 2025 |
| Vittoria Irwin | 1821806597 | Clinical Social Worker | West Chester, PA | 2024 |
| Walter Irwin, D.O | 1922153410 | Internal Medicine Physician | Hartwell, GA | 2007 |
| Wendy Irwin, MD | 1174580211 | Psychiatry Physician | New Rochelle, NY | 2006 |
| Wendy Irwin, LCSW | 1619489580 | Clinical Social Worker | Anchorage, AK | 2017 |
| Wendy Irwin | 1760156327 | Behavior Technician | Campbell, CA | 2021 |
| Wes Irwin, MD MS | 1538166715 | Anesthesiology Physician | Reno, NV | 2005 |
| Whitney Irwin, COTA/L | 1760849822 | Occupational Therapy Assistant | Green Cove Springs, FL | 2016 |
| William Irwin | 1285827808 | Pharmacist | Hyde Park, NY | 2007 |
| William Irwin, MD | 1316931017 | Dermatology Physician | Warner Robins, GA | 2005 |
| William Irwin | 1407043003 | Social Worker | Beacon, NY | 2007 |
| William Irwin, MD | 1477578664 | Emergency Medicine Physician | Cutler, IN | 2006 |
| William Irwin, PHD | 1518978709 | Speech-Language Pathologist | Murfreesboro, TN | 2006 |
| William Irwin, D.D.S. | 1568549954 | General Practice Dentistry | Houston, TX | 2006 |
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).