NPPES file of Aug 9, 2026

Doctors and health care providers in Rochester, NY

20,520 individual NPPES records list a practice address in Rochester, 4th of 1,009 New York cities. The largest group is licensed practical nurse: 1,843, 9% of the city's records, against 4% across New York. Page 267 of 411.

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

The 8 largest groups in Rochester

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

Rochester in New York

  • Rank in New York4th of 1,009 cities by records
  • Share of the state3.8% of New York's records
  • Specialties present25 or more taxonomy codes
  • Top three groups21.7% of all records
  • Licensed Practical Nurse rank2nd of the 10 New York cities with the most

Compared with New York as a whole, Rochester has 3.4× the state's share of hospitalist physician records and 0.55× its share of social worker records.

Providers in Rochester, alphabetically

  1. Elizabeth O'Brien, MDPediatrics Physician1568408383
  2. Elizabeth O'Brien, MS CCC-SLPSpeech-Language Pathologist1629345038
  3. Jacqueline O'BrienCase Manager/Care Coordinator1689190860
  4. Jeanne O'Brien, MDUrology Physician1174562441
  5. Karen O'Brien, RPHPharmacist1518281120
  6. Kathleen O'BrienSocial Worker1639538507
  7. Lorna O'Brien, RNHome Health Registered Nurse1013123843
  8. Rosalie O'BrienFamily Nurse Practitioner1003535816
  9. Sara O'Brien, NPAcute Care Nurse Practitioner1396461323
  10. Shane O'Brien, M.D.Pediatrics Physician1366976524
  11. Susan O'Brien, CASACAddiction (Substance Use Disorder) Counselor1891007217
  12. Elya O'Bryan, LMHCMental Health Counselor1417832148
  13. Avice O'Connell, M.D.Diagnostic Radiology Physician1053340208
  14. Jennifer O'ConnellCase Manager/Care Coordinator1396447470
  15. Kathleen O'Connell, PHYSICIAN ASSISTANTMedical Physician Assistant1952411928
  16. Rebecca O'Connell, MDStudent in an Organized Health Care Education/Training Program1942096169
  17. Ashley O'Connell Ferster, M.D.Plastic Surgery within the Head & Neck (Otolaryngology) Physician1396163747
  18. Anne O'Connor, M.S.Speech-Language Pathologist1356624480
  19. Brendan O'Connor, MDFamily Medicine Physician1073802187
  20. Daniel O'Connor, MDDiagnostic Radiology Physician1548484264
  21. Jack O'Connor, MS, PMHNPMental Health Counselor1962016071
  22. Jessica O'Connor, PAMedical Physician Assistant1144858952
  23. John James O'Connor, PT, DPTOrthopedic Physical Therapist1609598085
  24. Kate O'Connor, D.O.Internal Medicine Physician1477966331
  25. Lauren O'ConnorPhysician Assistant1770986150
  26. Lauren O'ConnorPhysician Assistant1033674197
  27. Lisa O'Connor, BSCASACLLAddiction (Substance Use Disorder) Counselor1265844633
  28. Mary Ann O'Connor, LMHCMental Health Counselor1740303643
  29. Megan O'Connor, PHARMDPharmacist1841862760
  30. Meghan O'Connor, LMHCMental Health Counselor1194250332
  31. Natalie O'Connor, LPN, CLCLicensed Practical Nurse1952942864
  32. Patrick O'Connor, MDPhysical Medicine & Rehabilitation Physician1255952727
  33. Rodney O'Connor, D.M.D.General Practice Dentistry1164504593
  34. Samantha O'Connor, RPA-CMedical Physician Assistant1407401508
  35. Timothy O'Connor, M.D.Plastic Surgery Physician1881611309
  36. Timothy O'Connor, MDEmergency Medicine Physician1316169238
  37. Timothy O'ConnorPhysical Therapist1689212334
  38. Kathryn O'DellOccupational Therapist1871286021
  39. Erin O'Donnell, AU.D., CCC-AAudiologist1184279747
  40. Kathleen O'Donnell, PNPPediatric Nurse Practitioner1710500624
  41. Marc O'Donnell, M.D.Orthopaedic Hand Surgery Physician1346509106
  42. Morgan O'Donnell, LMHCMental Health Counselor1821680521
  43. Rachel O'Donnell, P.A. - CMedical Physician Assistant1689828782
  44. Kristen O'Dwyer, M.D.Hematology (Internal Medicine) Physician1417286501
  45. Kevin O'Gara, MDPediatrics Physician1831124619
  46. Susan O'Gara, LCSWMental Health Counselor1548875826
  47. Erin O'Gorman, NPNurse Practitioner1376650390
  48. Kevin O'HaganChiropractor1497308688
  49. Katherine O'Hanlon, M.D.Emergency Medicine Physician1134152275
  50. Courtney O'HaraMental Health Counselor1215506399

The largest New York cities

  1. New York98,468
  2. Brooklyn64,057
  3. Bronx32,017
  4. Buffalo13,287
  5. Staten Island12,351

All of New York →

How to read this directory

Rochester, New York appears in the CMS National Plan and Provider Enumeration System with 20,520 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 Rochester - 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 Rochester 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 Rochester is weighted toward Licensed Practical Nurse (1,843 clinicians, followed by Student in an Organized Health Care Education/Training Program with 1,700 and Registered Nurse with 904). 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 New York's population, Rochester reports roughly 104.8 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 New York's most common specialties, Specialist is the most prominent one with no provider currently listing a Rochester practice address, a coverage gap Rochester patients typically fill by traveling to a larger nearby hub.

For Rochester 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 Rochester, NY?

There are 20,520 registered healthcare providers in Rochester, NY, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Rochester?

The most common specialties in Rochester are Licensed Practical Nurse, Student in an Organized Health Care Education/Training Program, Registered Nurse, Mental Health Counselor, Family Nurse Practitioner. Licensed Practical Nurse has the most providers with 1,843.

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.