NPPES file of Aug 9, 2026

Doctors and health care providers in Lancaster, PA

5,378 individual NPPES records list a practice address in Lancaster, 4th of 816 Pennsylvania cities. The largest group is licensed practical nurse: 366, 7% of the city's records, against 2% across Pennsylvania. Page 23 of 108.

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

The 8 largest groups in Lancaster

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

Lancaster in Pennsylvania

  • Rank in Pennsylvania4th of 816 cities by records
  • Share of the state2.1% of Pennsylvania's records
  • Specialties present25 or more taxonomy codes
  • Top three groups15.5% of all records
  • Licensed Practical Nurse rank2nd of the 10 Pennsylvania cities with the most

Compared with Pennsylvania as a whole, Lancaster has 4.5× the state's share of licensed practical nurse records and 0.60× its share of internal medicine physician records.

Providers in Lancaster, alphabetically

  1. John DellalanaDentist1023812021
  2. Earl Delong, PH.D.Psychologist1477906881
  3. Ryan Delong, M.D.Family Medicine Physician1629134036
  4. Dennis Delozier, PACPhysician Assistant1104801695
  5. Hilary DelpAthletic Trainer1518841311
  6. Jeanine Delp, LPNLicensed Practical Nurse1598602625
  7. Thomas Delrocini, RPHPharmacist1801384367
  8. Jennifer Delutis, M.D.Internal Medicine Physician1558573782
  9. Carolyn Demarra, M.S., LPC, CBISProfessional Counselor1932618360
  10. Caralyn DembroskyPhysician Assistant1720469323
  11. Claire Dempsey, M.S.ED.Professional Counselor1548954837
  12. Rebecca Dempsey, LPCProfessional Counselor1659585396
  13. Zhanna Demyantsev, CRNPFamily Nurse Practitioner1497436323
  14. Kathleen Den Bleyker, PSY DClinical Psychologist1043311970
  15. Christie Deneen, OTAOccupational Therapy Assistant1932470069
  16. Heather Denlinger, C.N.M.Maternal Newborn Registered Nurse1174510093
  17. Stacey Denlinger, DOFamily Medicine Physician1851635239
  18. Steven Denlinger, LSWSocial Worker1477754570
  19. Jade Dennis, LPCProfessional Counselor1235731738
  20. Brittany Denton, LSWSocial Worker1528803095
  21. Garrett DenzlerProfessional Counselor1437825403
  22. Craig Depoe, MDAnesthesiology Physician1821088998
  23. Mary Depoe, CRNPPediatric Nurse Practitioner1124004163
  24. Ellen Depoy, MDNeurology Physician1992230726
  25. Hannah DeppenPhysical Therapist1033864301
  26. Kathryn Deprimo, MD, MHAInternal Medicine Physician1750992855
  27. John Derderian, DOInternal Medicine Physician1477595445
  28. Meghan Dermody, M.D.Vascular Surgery Physician1265552608
  29. Alexandria Derose, CRNPFamily Nurse Practitioner1316340730
  30. Leann DerrCounselor1407709165
  31. Anne-Marie Derrico, MDFamily Medicine Physician1982658050
  32. Christen Desarro, DPTPhysical Therapist1306351622
  33. Leigh Deshong, M.D.Geriatric Medicine (Internal Medicine) Physician1720354210
  34. Swapna Deshpande, MDInternal Medicine Physician1689616583
  35. Amy Desmond, ODVision Therapy Optometrist1952602120
  36. C Katherine Destefano, LPCMental Health Counselor1306968649
  37. Melissa Destefano, PA-CMedical Physician Assistant1265461313
  38. Joann Detweiler, CRNPAdult Health Nurse Practitioner1811950702
  39. Kimberly Detweiler, BSN, RNOrthopedic Registered Nurse1386565521
  40. Maria Detweiler, LPCProfessional Counselor1619774155
  41. Mary Detweiler, LCSWClinical Social Worker1053324194
  42. Christine Detwiler, CRNPFamily Nurse Practitioner1104201862
  43. Rachel Dever, D.O.Cardiovascular Disease Physician1821520263
  44. Marianne Devlin, CRNACertified Registered Nurse Anesthetist1558322131
  45. Aliza Devoe, MSW, LSWSocial Worker1407738057
  46. Jamie Devoe, LPCProfessional Counselor1215571401
  47. Andrew Dewalt, PA-CPhysician Assistant1871264598
  48. Nicoleta DiaconuRegistered Nurse1447143441
  49. Ibrahim Diakhate, CRNPNurse Practitioner1679441604
  50. Hadiyatou DialloLicensed Practical Nurse1568262970

The largest Pennsylvania cities

  1. Philadelphia42,849
  2. Pittsburgh28,866
  3. Allentown5,904
  4. Erie5,083
  5. Plymouth Meeting5,019

All of Pennsylvania →

How to read this directory

Lancaster, Pennsylvania appears in the CMS National Plan and Provider Enumeration System with 5,378 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 Lancaster - 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 Lancaster 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 Lancaster is weighted toward Licensed Practical Nurse (366 clinicians, followed by Professional Counselor with 251 and Physical Therapist with 216). 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, Lancaster reports roughly 41.5 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 Lancaster practice address, a coverage gap Lancaster patients typically fill by traveling to a larger nearby hub.

For Lancaster 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 Lancaster, PA?

There are 5,378 registered healthcare providers in Lancaster, PA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Lancaster?

The most common specialties in Lancaster are Licensed Practical Nurse, Professional Counselor, Physical Therapist, Family Medicine Physician, Clinical Social Worker. Licensed Practical Nurse has the most providers with 366.

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.