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Internal Medicine

Neil N. Boside, MD

Works at hospitals in Greenwich, CT · Stamford, CT · Connecticut

Summary

Dr. Neil N. Boside, MD is an internal medicine doctor at 170 Washington Blvd, Stamford, CT 06902. Phone: (203) 276-2472. Accepts Medicare assignment. In 2024, Neil N. Boside had 251 Original Medicare patients and 1,293 services. NPI 1720168347. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 170 Washington Blvd, Stamford, CT 06902 · Directions (2 more locations)
  • Phone: (203) 276‑2472
  • Medicare: Accepts Medicare assignment
  • Hospitals: Greenwich Hospital Association -, Stamford Hospital
  • Group practice: Stamford Health Medical Group Inc
  • Medical school: graduated 1992 (34 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Neil N. Boside, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Neil N. Boside accept Medicare assignment?
Yes. Medicare's clinician data says Neil N. Boside accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Neil N. Boside see?
In 2024, CMS data shows 251 Original Medicare patients and 1,293 services for Neil N. Boside. This counts Original Medicare only and measures volume, not quality.
What is Neil N. Boside's NPI number?
1720168347. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Neil N. Boside, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients251
Services billed to Medicare1,293
Different services or procedures38
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)485 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)139 services
  3. Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (99490)102 services
  4. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)70 services
  5. Administration of influenza virus vaccine (G0008)63 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol75%
  • High blood pressure68%
  • Arthritis39%
  • Ischemic heart disease29%
  • Diabetes24%
  • Anxiety21%

Hospitals where Neil N. Boside works

Medicare's Facility Affiliation Data lists Neil N. Boside at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Greenwich Hospital Association -Greenwich, CT · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 070018
  • Stamford HospitalStamford, CT · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 070006

Practice locations

Addresses where Neil N. Boside is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Neil N. Boside as a member of this group (CMS data updated October 2, 2026).

  • Stamford Health Medical Group Inc444 clinicians in the group

Specialties

Find other Internal Medicine doctors in Connecticut →

Other internal medicine doctors in Stamford

Clinicians with the same Medicare primary specialty in Stamford, CT — not a recommendation.

All internal medicine doctors in Stamford →

Other clinicians in Stamford Health Medical Group Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year1992 (34 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1720168347
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians