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 21 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. Parker Stacy, LPCProfessional Counselor1487164935
  2. Catherine Staffieri, RDRegistered Dietitian1093178873
  3. Celine Stahl, MDSpecialist1356685119
  4. Sarah Stamper, M.D.Student in an Organized Health Care Education/Training Program1013138247
  5. Susan Stanton, LMFTMarriage & Family Therapist1942535307
  6. Robert Stark, M.D.Cardiovascular Disease Physician1871503383
  7. Melissa Starr, PSY.D.Clinical Child & Adolescent Psychologist1063746352
  8. Daniella Stavreva-Zlatareva, M.D.Child & Adolescent Psychiatry Physician1497892251
  9. Richard Stebbins, PTPhysical Therapist1619910965
  10. Lois Steckler, APRNNeonatal Nurse Practitioner1124394630
  11. Maureen Steele, M.D.Internal Medicine Physician1114945623
  12. Marijana Stefanovic, PHARMDOncology Pharmacist1730835950
  13. Shera SteinMassage Therapist1457298861
  14. Paige Stetson, LPC, LMHCProfessional Counselor1770720245
  15. Birva Straub, M.D.Diagnostic Radiology Physician1811131006
  16. Jaime Streeter, RNGeneral Practice Registered Nurse1932687431
  17. Marc Strileckis, ATC, CSCSAthletic Trainer1205963089
  18. Nicholas Stroumbakis, M.D.Urology Physician1871597641
  19. John Strugar, MDNeurological Surgery Physician1316928310
  20. Marisa Su, MDPediatric Orthopaedic Surgery Physician1578024592
  21. Susan Subramanian, LMSWClinical Social Worker1316877160
  22. Andrew Sullivan, PTPhysical Therapist1437277399
  23. Hope Sullivan, PA-CMedical Physician Assistant1922641745
  24. Scott Sullivan, M.D.Diagnostic Radiology Physician1790733822
  25. Kairui Sun, DOStudent in an Organized Health Care Education/Training Program1083416275
  26. Kieran SunthaClinical Social Worker1346172731
  27. Miriam Sussman, PA-CPhysician Assistant1841752300
  28. Caroline Sutton, DNPFamily Nurse Practitioner1780266643
  29. Paul Sygall, M.DPain Medicine (Anesthesiology) Physician1568404895
  30. Eva Szaniawski, M.D.Anesthesiology Physician1679918064
  31. Alfonso Tagliavia, M.DAnesthesiology Physician1316973399
  32. Katherine Tague, LPCAProfessional Counselor1972362010
  33. Cheng-Hung TaiGastroenterology Physician1003310434
  34. John Tamerin, M.D.Psychiatry Physician1760558811
  35. Jesse TanStudent in an Organized Health Care Education/Training Program1538961834
  36. Rachel Tanowitz, R.D. M.S. C.D.N.Registered Dietitian1134145162
  37. Kristy Tefft, MDStudent in an Organized Health Care Education/Training Program1144023102
  38. Caroline TeleszMental Health Counselor1982520813
  39. Helen Temple, M.S.Genetic Counselor (M.S.)1154343341
  40. John Tenbusch, LCSWClinical Social Worker1033455050
  41. Ruth Theaman, LCSW-RClinical Social Worker1134858806
  42. Stylianos Theofanidis, MDNeonatal-Perinatal Medicine Physician1912926908
  43. Sara Thies Feldman, LCSWClinical Social Worker1417197229
  44. Shailin Thomas, MD (AS OF MAY 2022)Student in an Organized Health Care Education/Training Program1962152041
  45. Alison Thompson, M.D.Internal Medicine Physician1558741728
  46. Mark ThompsonPhysical Therapy Assistant1013541481
  47. Lindsay TisciaClinical Social Worker1568751493
  48. Erin Tishman, LPCClinical Social Worker1821343609
  49. Paul Tomaszewski, M.D.Sports Medicine (Orthopaedic Surgery) Physician1164713681
  50. Kiyoko Tomita, M.D.Internal Medicine Physician1194041947

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.