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 8 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. Frank Guastella, LCSWClinical Social Worker1912445792
  2. Anthony Guccione, DOStudent in an Organized Health Care Education/Training Program1962341354
  3. Andres GuerreroMental Health Counselor1821772922
  4. Kelly GuncayLicensed Practical Nurse1194617225
  5. Bhaskar GunjupaliPharmacist1174762892
  6. Donna Hagon, NPAdult Health Nurse Practitioner1508171646
  7. Nella Hahn, LMSWClinical Social Worker1093985327
  8. Nechama HakakianRegistered Nurse1962348326
  9. Patricia Hall, LCSWRClinical Social Worker1831286350
  10. Sean Halpin, DPTPhysical Therapist1053275578
  11. Daniel Hamou, MDOphthalmology Physician1548208473
  12. Patricia Hanlon, D.M.D.Pediatric Dentistry1649393885
  13. Matthew Hannsgen, PHARM. D.Pharmacist1730527136
  14. Anne Hansen, D.O.Pediatrics Physician1659314136
  15. Edward HanssonRegistered Nurse1255662847
  16. Jonathan Harbord, LMSWSocial Worker1447866272
  17. Michaela HarrisPeer Specialist1275417727
  18. Beata Harrison, LMSWSocial Worker1265820450
  19. Christopher Hart, RPACMedical Physician Assistant1639166846
  20. Terry Ann Hartmann, RNRegistered Nurse1316235625
  21. Omar Hasan-Hafez, DOStudent in an Organized Health Care Education/Training Program1518760701
  22. Kaitlyn Hatzinikolaou, PT, DPTPhysical Therapist1528891884
  23. Renu Hausen, MDRadiation Oncology Physician1316950017
  24. Colleen Heinze, CNMMidwife1821514746
  25. Ryan Henaghan, CASACAddiction (Substance Use Disorder) Counselor1336732304
  26. Marissa HendricksonPeer Specialist1689401663
  27. Russell Henley, DDSGeneral Practice Dentistry1356469837
  28. Lauren Hertwig, NPFamily Nurse Practitioner1609204239
  29. Robert Hervan, RNRegistered Nurse1992045942
  30. Erin HickeyStudent in an Organized Health Care Education/Training Program1568242030
  31. Jennifer Higa, DO, MPHHospitalist Physician1366899221
  32. Jennifer Hill, M.D.Urogynecology and Reconstructive Pelvic Surgery (Urology) Physician1932390150
  33. Darren Hirsch, M.D.Allergy Physician1548498819
  34. James Hoeg, DDSDentist1649503285
  35. Thomas Hoeg, D.D.S.General Practice Dentistry1225498876
  36. Catherine Hoermann, LMSWSocial Worker1932522513
  37. Michael Hoermann, LCSWClinical Social Worker1285717157
  38. Quaschay HolmesStudent in an Organized Health Care Education/Training Program1962169276
  39. Andrea Hopkins, LMSWSocial Worker1447589163
  40. Maria Liza Horn, RNRegistered Nurse1407285158
  41. Cristine Horowitz, LMSWSocial Worker1497308985
  42. Kazi Hossain, DOUrology Physician1144675588
  43. George HsuOptician1144736851
  44. Jie HuangAnatomic Pathology & Clinical Pathology Physician1790909364
  45. Michael Huang, M.D.Infectious Disease Physician1437346129
  46. Keith Hueffner, RNRegistered Nurse1821673831
  47. Daniel Hull, RNSchool Registered Nurse1821396193
  48. Tegan Hulse, LMSWClinical Social Worker1215381447
  49. Kathleen Huttner, PTPhysical Therapist1053365098
  50. Shari HymesCertified Respiratory Therapist1780253823

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.