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 24 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. Stephen Diamantoni, M.D.Family Medicine Physician1831240100
  2. Dolores DiazLicensed Practical Nurse1952727679
  3. Hector Diaz, M.D.Psychiatry Physician1407818081
  4. Jennifer Diaz Rivera, DCChiropractor1629757786
  5. Frank Dibella, MA, LPCProfessional Counselor1841586690
  6. Vito Dicamillo, MDFamily Medicine Physician1386621688
  7. Amanda Dicely, CRNPAcute Care Nurse Practitioner1376415257
  8. Sydelle Dickerson, LPNLicensed Practical Nurse1427630458
  9. Addisyn DicksonRegistered Nurse1902735889
  10. Belinda Dickson-Brown, MS, LPCProfessional Counselor1770263089
  11. Jennifer Dicola, MSW, LSWSocial Worker1730711912
  12. Kelly DicostanzoBehavior Technician1417775198
  13. Mary DiehlRegistered Nurse1336739895
  14. Anna DiemMental Health Counselor1346101888
  15. Bethany Dienner, OTROccupational Therapist1346820024
  16. Eric Dieter, CADCAddiction (Substance Use Disorder) Counselor1225378698
  17. Hayley Dietrich, PA-CMedical Physician Assistant1083256713
  18. Jenny Dietz, BCBABehavior Analyst1164072625
  19. Simon Dietz, LCSWClinical Social Worker1396464814
  20. Ramonita Diffenderfer, RNRegistered Nurse1942396270
  21. Esther Digiacomo, PA-CSurgical Physician Assistant1295972180
  22. Eric Diilio, LPCMental Health Counselor1285997221
  23. Shannon DillerProfessional Counselor1346809209
  24. Kaylee Dinga, OTR/LOccupational Therapist1124519392
  25. Emily DingleLicensed Practical Nurse1366225823
  26. Alexander Diobilda, RPHPharmacist1174334924
  27. Melanie Diperna, PA-CPhysician Assistant1851542401
  28. Rebecca Disarro, LCSWClinical Social Worker1154773026
  29. Michael Discavage, PA-CMedical Physician Assistant1184665234
  30. Kirk Dise, MDAnesthesiology Physician1184614257
  31. Kathleen DisslerPsychiatric/Mental Health Nurse Practitioner1912663741
  32. Rebecca Dithridge, FNPFamily Nurse Practitioner1881740041
  33. Mindy Ditzler, LBS, MABehavior Analyst1295384360
  34. Kristi Dively, DOAddiction Medicine (Internal Medicine) Physician1063447852
  35. Brian Dobslaw, CRNPNurse Practitioner1255441226
  36. Courtney Docherty, DOSurgical Critical Care Physician1871033191
  37. Benjamin Dodson, PASurgical Physician Assistant1144773268
  38. Robert Doe, MDFamily Medicine Physician1174551063
  39. Elizabeth Doherty, M.D.Family Medicine Physician1194086850
  40. David Domanski, MFTMarriage & Family Therapist1174320451
  41. Tara Dombach, MS-CCC-SLPSpeech-Language Pathologist1578730099
  42. Dennis Dombrowski, ODOptometrist1174557094
  43. Catherine DonahuePhysical Therapy Assistant1124630421
  44. Heather DonahueOccupational Therapy Assistant1477873800
  45. Jaclyn Donahue, M.ED.Behavior Analyst1447484241
  46. Michael Donato, RNPsychiatric/Mental Health Registered Nurse1720636186
  47. Paul Donecker, M.S.Psychologist1619191830
  48. Umamaheswara Donepudi, PHARM.DPharmacist1528202785
  49. Mustafa Donmez, MBBSNeurology Physician1982232872
  50. Nikole Donmoyer, PA-CMedical Physician Assistant1376350835

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.