NPPES file of Aug 9, 2026

Doctors and health care providers in Riverhead, NY

982 individual NPPES records list a practice address in Riverhead, 83rd of 1,009 New York cities. The largest group is students in training: 64, 7% of the city's records, against 7% across New York. Page 12 of 20.

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

The 8 largest groups in Riverhead

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

Riverhead in New York

  • Rank in New York83rd of 1,009 cities by records
  • Share of the state0.2% of New York's records
  • Specialties present25 or more taxonomy codes
  • Top three groups18.5% of all records

Compared with New York as a whole, Riverhead has 3.6× the state's share of cardiovascular disease physician records and 0.24× its share of specialist records.

Providers in Riverhead, alphabetically

  1. Kenneth MartoneRegistered Nurse1184155376
  2. Christine Masefield, PTPhysical Therapist1992891550
  3. Joseph Masefield, PT DPTPhysical Therapist1013003680
  4. Sarah MasonLicensed Practical Nurse1457720278
  5. Karine Masone, LCSW,CASACClinical Social Worker1417046749
  6. Daniel Massiah, M.D.Pulmonary Disease Physician1063485969
  7. Denise MastandoPhysical Therapist1558542159
  8. Janine Mastropaolo, LCSWRClinical Social Worker1962799494
  9. Ranjana Mathur, M.D.Anatomic Pathology & Clinical Pathology Physician1801994868
  10. Nanette Matos, MDEmergency Medicine Physician1912584384
  11. Arlene Matthews-LairdLicensed Practical Nurse1477994069
  12. Samantha May, CCC-SLP, TSSLDSpeech-Language Pathologist1518686146
  13. Alina MazurBehavior Technician1699535112
  14. Daniel Mazzone, RN, BSNGerontology Registered Nurse1902489859
  15. Fulvio Mazzucchi, M.D.Cardiovascular Disease Physician1457354771
  16. Maureen Mc GuinnessCase Manager/Care Coordinator1932462082
  17. John McAdam, RNRegistered Nurse1083954127
  18. Maureen McBride, R.N.Registered Nurse1114129962
  19. Lucas McCaffrey, DORheumatology Physician1891050290
  20. Christine McDermott, MS, RD, CDE, CDNRegistered Dietitian1619365624
  21. Christina McElroyOccupational Therapist1720125974
  22. Sally Ann McGarrity, LMSWClinical Social Worker1558482497
  23. Anne McGarry, SLPSpeech-Language Pathologist1174366900
  24. Grace McGloine, RNRegistered Nurse1063968816
  25. Britney McGowan, LPNLicensed Practical Nurse1326471152
  26. Jordan McKernan, LMSWSocial Worker1346062270
  27. Michelle McKillop, ODOptometrist1851917256
  28. Wendy McLaughlin, NPPPsychiatric/Mental Health Nurse Practitioner1669512133
  29. Lara McNeil, DCN, RDN, CDNRegistered Dietitian1356741649
  30. Fatema Meah, MDPediatrics Physician1295785590
  31. Arjun Mehta, M.D.Dermatopathology (Pathology) Physician1902330855
  32. Paayal Mehta, MDSurgery Physician1114951613
  33. Juliana MellorPhysician Assistant1215640826
  34. Susan Melnick, NURSE PRACTITIONERGeneral Practice Registered Nurse1366565202
  35. Clementina Melone, RPHPharmacist1881865095
  36. Isabel Meltzer, LCSWClinical Social Worker1538183082
  37. Joybelle Menzies, DMDGeneral Practice Dentistry1720134364
  38. Martin Merenzon, MDNeurological Surgery Physician1154027878
  39. Mariah Messina, PA-CMedical Physician Assistant1285272740
  40. Mitchell Meyerson, MDSpecialist1205813268
  41. Demetrios MichaelidesPharmacist1730508516
  42. Laurie Michaels, RNAddiction (Substance Use Disorder) Registered Nurse1417170747
  43. Shannakay MichelBehavior Analyst1265213144
  44. Karen Mickaliger, REGISTERED NURSESchool Registered Nurse1104124353
  45. Ann Mignone-Cruz, ANPAdult Health Nurse Practitioner1891079703
  46. Eugene Milanaik, CRNAAnesthesiology Physician1396816716
  47. Cynthia MilaniAddiction (Substance Use Disorder) Counselor1346663945
  48. Lauren Mileo, MDOphthalmology Physician1033609110
  49. Audrey Miller, LCSWRClinical Social Worker1578632287
  50. Brianne MillerFamily Nurse Practitioner1760243448

The largest New York cities

  1. New York98,468
  2. Brooklyn64,057
  3. Bronx32,017
  4. Rochester20,520
  5. Buffalo13,287

All of New York →

How to read this directory

Riverhead, New York appears in the CMS National Plan and Provider Enumeration System with 982 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 Riverhead - 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 Riverhead 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 Riverhead is weighted toward Student in an Organized Health Care Education/Training Program (64 clinicians, followed by Social Worker with 61 and Clinical Social Worker with 57). 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, Riverhead reports roughly 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.

For Riverhead 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 Riverhead, NY?

There are 982 registered healthcare providers in Riverhead, NY, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Riverhead?

The most common specialties in Riverhead are Student in an Organized Health Care Education/Training Program, Social Worker, Clinical Social Worker, Registered Nurse, Physician Assistant. Student in an Organized Health Care Education/Training Program has the most providers with 64.

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.