NPPES file of Aug 9, 2026

Doctors and health care providers in Warren, PA

314 individual NPPES records list a practice address in Warren, 123rd of 816 Pennsylvania cities. The largest group is pharmacist: 26, 8% of the city's records, against 5% across Pennsylvania. Page 3 of 7.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

The 8 largest groups in Warren

Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.

Warren in Pennsylvania

  • Rank in Pennsylvania123rd of 816 cities by records
  • Share of the state0.1% of Pennsylvania's records
  • Specialties present25 or more taxonomy codes
  • Top three groups21.7% of all records

Compared with Pennsylvania as a whole, Warren has 3.5× the state's share of optometrist records.

Providers in Warren, alphabetically

  1. Herman Grishaver, M.D.Neurology Physician1295993640
  2. Daniel Grolemund, O.T.R./L.Occupational Therapist1720317464
  3. Tiffany Habicht, COTAOccupational Therapy Assistant1841439247
  4. Jenafer Hammond, PAPhysician Assistant1942247309
  5. Kelsie Harbaugh, OTR/LOccupational Therapist1033766548
  6. Ryan Harer, PT, DPTPhysical Therapist1134770845
  7. Darbee Harrington, PT, DPTPhysical Therapist1962735530
  8. Nichole Harrison, M.D.Internal Medicine Physician1609888643
  9. Lauren HarveyOccupational Therapist1053869156
  10. Lonnie Heeter, CRNPNurse Practitioner1407812167
  11. Marlea Heeter, PA-CMedical Physician Assistant1104580117
  12. Thomas Heromin, M.D.Diagnostic Radiology Physician1992764161
  13. James Hickey, D.M.D.Dentist1932712759
  14. Stephanie Hoden, FNP-CNurse Practitioner1942967252
  15. Jennifer Hoffman, MPTPhysical Therapist1093886707
  16. Peter Hoffmann, D.M.D.Dentist1013912815
  17. Janet Hogan, CNMWAdvanced Practice Midwife1558342436
  18. Treena Holmes HulingsSocial Worker1033529144
  19. Kimberly Holt, LPCProfessional Counselor1457909442
  20. Damian Horner, DOFamily Medicine Physician1114984853
  21. Paige Humphrey, PA-CPhysician Assistant1396592473
  22. Vanessa Humphrey, C.O.T.ADriving and Community Mobility Occupational Therapy Assistant1891160982
  23. Emily Hunter, PA-CPhysician Assistant1467854794
  24. Brenda Huntoon, COTA/LDriving and Community Mobility Occupational Therapy Assistant1417282211
  25. Paul Ignatius, M.D.Orthopaedic Surgery Physician1851550958
  26. Lois Inman, C.R.N.A.Certified Registered Nurse Anesthetist1912996208
  27. Sarah JacobsSpeech-Language Pathologist1891265955
  28. Samantha Jenkins, O.D.Optometrist1326296245
  29. Sarah Jepson, PAMedical Physician Assistant1730550450
  30. Christopher John, PA-CPhysician Assistant1902996903
  31. John John, MDPsychiatry Physician1497789507
  32. Frankie Johnson, LCSWClinical Social Worker1306109731
  33. Van Johnson, MDOrthopaedic Surgery Physician1780647958
  34. Sajda JoudiPharmacist1417552399
  35. James Juliano, D.C.Chiropractor1356354062
  36. Manu Kaushik, MDFamily Medicine Physician1053642140
  37. Lauren Keddie, PT, DPT, AIB-CONPhysical Therapist1881026862
  38. Charles Keller, O.D.Optometrist1245212885
  39. Abraham Kibbey, PA-CPhysician Assistant1972045912
  40. Kim Kibbey, LSWClinical Social Worker1851459671
  41. Andrew Kingan, OTD, OTR/LOccupational Therapist1407554421
  42. Hayley Kingen, RDN, LDNRegistered Dietitian1174293005
  43. Verlynn Kleppe, D.C.Chiropractor1326110032
  44. Susan Knowlden, CNMWAdvanced Practice Midwife1528049707
  45. Emily Koebley, CRNPPsychiatric/Mental Health Nurse Practitioner1902737133
  46. Larry Koppelman, LCSWClinical Social Worker1538248430
  47. Leroy Korb, M.D.Radiation Oncology Physician1770572430
  48. Janice Kostrzewski, PA-CMedical Physician Assistant1992822209
  49. Mohamed Kourtu, M.D.Pain Medicine (Anesthesiology) Physician1659360931
  50. Thomas Kunkel, OTR/LOccupational Therapist1942675079

The largest Pennsylvania cities

  1. Philadelphia42,849
  2. Pittsburgh28,866
  3. Allentown5,904
  4. Lancaster5,378
  5. Erie5,083

All of Pennsylvania →

How to read this directory

Warren, Pennsylvania appears in the CMS National Plan and Provider Enumeration System with 314 registered healthcare providers spanning 25 or more distinct NUCC-taxonomy specialties. This count includes every individual clinician who has applied for an NPI and listed a practice address in Warren - physicians, dentists, nurse practitioners, physician assistants, chiropractors, physical therapists, optometrists, psychologists, podiatrists, and every other credentialed provider type CMS tracks. It does not measure hospital beds, urgent-care capacity, or whether a given clinic is accepting new patients; it measures the pool of professionals with current NPI enrollment and a Warren practice location on file. Every figure is drawn from the federal National Provider Identifier Registry (CMS NPPES) - more than 7 million providers, maintained since May 2007, with 2024 Medicare Part D data, and, according to CMS, can be searched, compared, and traced in our methodology.

The provider mix in Warren is weighted toward Pharmacist (26 clinicians, followed by Physician Assistant with 21 and Physical Therapist with 21). That distribution reflects how NPPES records specialty: providers self-select a primary taxonomy code, so a family physician who also practices geriatrics will show up under whichever NUCC code they registered first. Relative to Pennsylvania's population, Warren reports roughly 2.4 providers per 100,000 residents using the state-level denominator, which is a rough proxy rather than a precise access-to-care measurement; the true catchment area of any {cityName} clinician extends beyond the municipal boundary.

Of Pennsylvania's most common specialties, Student in an Organized Health Care Education/Training Program is the most prominent one with no provider currently listing a Warren practice address, a coverage gap Warren patients typically fill by traveling to a larger nearby hub.

For Warren patients, this directory is most useful as a starting shortlist. Important: PlainDoctor is a directory of publicly available CMS government data, not a review site, a ranking, or medical advice. NPPES data is self-reported and refreshed monthly; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients.

For informational purposes only; this directory is not medical advice and not a substitute for checking a license. See also: how to find a doctor and how to verify one.

Common questions

How many doctors are in Warren, PA?

There are 314 registered healthcare providers in Warren, PA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Warren?

The most common specialties in Warren are Pharmacist, Physician Assistant, Physical Therapist, Professional Counselor, Clinical Social Worker. Pharmacist has the most providers with 26.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov). Records are self-reported registrations, not licenses.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.