NPPES file of Aug 9, 2026

Doctors and health care providers in Greenwich, CT

1,184 individual NPPES records list a practice address in Greenwich, 18th of 200 Connecticut cities. The largest group is clinical social worker: 126, 11% of the city's records, against 9% across Connecticut. Page 14 of 24.

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

The 8 largest groups in Greenwich

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

Greenwich in Connecticut

  • Rank in Connecticut18th of 200 cities by records
  • Share of the state1.4% of Connecticut's records
  • Specialties present25 or more taxonomy codes
  • Top three groups20.5% of all records

Compared with Connecticut as a whole, Greenwich has 3.4× the state's share of specialist records and 0.48× its share of mental health counselor records.

Providers in Greenwich, alphabetically

  1. Robert Marussich, BSPHARMACYOncology Pharmacist1922667732
  2. Gianna Masi, REGISTERED DIETITIANRegistered Dietitian1861069858
  3. Samuel Masini, ND LACAcupuncturist1235254665
  4. Sameer Massand, MDPlastic Surgery Physician1083148357
  5. Kimberly MataAthletic Trainer1679339717
  6. Mahan Mathur, M.D.Diagnostic Radiology Physician1326260910
  7. Alexandra Matthews, M.A., CCC-SLP, TSSLDSpeech-Language Pathologist1841650140
  8. Alex MayPharmacist1528416997
  9. Marcus Mayus, M.D.Internal Medicine Physician1073734935
  10. Clarena McBeth, LMHC, CASAC, LPCMental Health Counselor1710154885
  11. Matthew McConnell, MDNeurology Physician1699018044
  12. Julie McCullough, APRN, FNP-BCFamily Nurse Practitioner1295153278
  13. Amber McDonald, PASurgical Physician Assistant1194024299
  14. Jessica McGovern, MS, CCC-SLPSpeech-Language Pathologist1598020315
  15. Meaghan McGuire, RNMaternal Newborn Registered Nurse1508670803
  16. Michelle McGuireSpecialist1568226991
  17. Bonnie McGuire Wreschner, MDEmergency Medicine Physician1871789834
  18. Tami McManus, NPPsychiatric/Mental Health Nurse Practitioner1487289633
  19. Catherine McNulty, PHDClinical Psychologist1982301131
  20. Peter McWhorter, MDSurgery Physician1730349069
  21. Cerrah Mendelsohn-Elzam, M.D.Internal Medicine Physician1568679736
  22. Lauren Mendelsohn-Levin, M.D.Pediatrics Physician1609000595
  23. George Mesologites, PHARMDPharmacist1497312250
  24. Janice Meyer, CRNACertified Registered Nurse Anesthetist1710916457
  25. Alexis MeytinSocial Worker1033698311
  26. Andrew Michalak, M.D.Neurology Physician1720440985
  27. Irena Michals, LCSWClinical Social Worker1245879584
  28. Diane Mickley, MDInternal Medicine Physician1164574778
  29. Steven Mickley, MDInternal Medicine Physician1376539205
  30. Angelo Milazzo, DDSPediatric Dentistry1578780516
  31. Kaitlyn Milchman, PA-CPhysician Assistant1174945901
  32. Alisa Miller, DPMPrimary Podiatric Medicine Podiatrist1841418571
  33. Christopher Miller, APRNAcute Care Nurse Practitioner1073391777
  34. Hyman Miller, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1265532634
  35. Kerry Miller, DCChiropractor1265545545
  36. Margaret Miller, NPPsychiatric/Mental Health Nurse Practitioner1477113561
  37. Michael Miller, MDAnatomic Pathology & Clinical Pathology Physician1730168394
  38. Nora Miller, M.D.Reproductive Endocrinology Physician1861500704
  39. Richard Miller, D.D.S.Prosthodontics1770734212
  40. Seth Miller, M.D.Orthopaedic Surgery Physician1255303764
  41. Thomas Milucci, DPTPhysical Therapist1205448495
  42. Katherine Mini, M.D.Pediatrics Physician1790756401
  43. Linda Mitchell, MDHospice and Palliative Medicine (Family Medicine) Physician1700296142
  44. Kisha Mitchell Richards, M.D.Anatomic Pathology & Clinical Pathology Physician1053526053
  45. Andrea MitchelsonRegistered Nurse1922670298
  46. Jan Mittleman, LCSWClinical Social Worker1134372535
  47. Geetali Mohan, M.DInternal Medicine Physician1073779856
  48. Mohammad Reza Moienafshari, M.D.Internal Medicine Physician1154396893
  49. Ecaterina Moisa-Babii, M.D.Obstetrics & Gynecology Physician1144484940
  50. Slake Mokrytzki, MDStudent in an Organized Health Care Education/Training Program1437852407

The largest Connecticut cities

  1. New Haven9,793
  2. Hartford6,317
  3. Waterbury3,148
  4. Farmington2,993
  5. Bridgeport2,980

All of Connecticut →

How to read this directory

Greenwich, Connecticut appears in the CMS National Plan and Provider Enumeration System with 1,184 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 Greenwich - 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 Greenwich 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 Greenwich is weighted toward Clinical Social Worker (126 clinicians, followed by Student in an Organized Health Care Education/Training Program with 61 and Physical Therapist with 56). 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 Connecticut's population, Greenwich reports roughly 32.7 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 Connecticut's most common specialties, Marriage & Family Therapist is the most prominent one with no provider currently listing a Greenwich practice address, a coverage gap Greenwich patients typically fill by traveling to a larger nearby hub.

For Greenwich 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 Greenwich, CT?

There are 1,184 registered healthcare providers in Greenwich, CT, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Greenwich?

The most common specialties in Greenwich are Clinical Social Worker, Student in an Organized Health Care Education/Training Program, Physical Therapist, Internal Medicine Physician, Family Nurse Practitioner. Clinical Social Worker has the most providers with 126.

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.