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Hospitalist

Adwoa P. Nyanin, MD

Works at hospitals in Derby, CT · Hartford, CT · Middletown, CT … · Connecticut

Summary

Dr. Adwoa P. Nyanin, MD is a hospitalist at 435 Lewis Ave, Meriden, CT 06451. Phone: (860) 358-6878. Accepts Medicare assignment. In 2024, Adwoa P. Nyanin had 450 Original Medicare patients and 519 services. NPI 1487626065. 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: Hospitalist
  • Address: 435 Lewis Ave, Meriden, CT 06451 · Directions (2 more locations)
  • Phone: (860) 358‑6878
  • Medicare: Accepts Medicare assignment
  • Hospitals: Griffin Hospital, Hartford Hospital, Middlesex Hospital and 2 more
  • Group practice: Hartford Hospital (+2 more)
  • Medical school: University Of Pittsburgh School Of Medicine · graduated 1997 (29 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Adwoa P. Nyanin, 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 Adwoa P. Nyanin accept Medicare assignment?
Yes. Medicare's clinician data says Adwoa P. Nyanin 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 Adwoa P. Nyanin see?
In 2024, CMS data shows 450 Original Medicare patients and 519 services for Adwoa P. Nyanin. This counts Original Medicare only and measures volume, not quality.
What is Adwoa P. Nyanin's NPI number?
1487626065. 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 Adwoa P. Nyanin, 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 patients450
Services billed to Medicare519
Different services or procedures8
Participating Medicare providerYes
Average age of these patients79

Most frequent services

  1. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)345 services
  2. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)86 services
  3. Critical care, first 30-74 minutes (99291)64 services
  4. Ultrasonic guidance for blood vessel access (76937)13 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 blood pressure75%
  • High cholesterol75%
  • Arthritis57%
  • Anxiety50%
  • Chronic kidney disease49%
  • Heart failure49%

Hospitals where Adwoa P. Nyanin works

Medicare's Facility Affiliation Data lists Adwoa P. Nyanin 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.

  • Griffin HospitalDerby, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070031
  • Hartford HospitalHartford, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070025
  • Middlesex HospitalMiddletown, CT · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 070020
  • Midstate Medical CenterMeriden, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070017
  • The Hospital of Central ConnecticutNew Britain, CT · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 070035

Practice locations

Addresses where Adwoa P. Nyanin is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Adwoa P. Nyanin as a member of these groups (CMS data updated October 2, 2026).

  • Hartford Hospital1,044 clinicians in the group
  • Middlesex Hospital234 clinicians in the group
  • Midstate Medical Center186 clinicians in the group

Specialties

Find other Hospitalist doctors in Connecticut →

Other hospitalists in Connecticut

Clinicians with the same Medicare primary specialty in Connecticut — not a recommendation.

All hospitalists in Connecticut →

Other clinicians in Hartford Hospital

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

Clinician information

CredentialMD
Medical schoolUniversity Of Pittsburgh School Of Medicine
Graduation year1997 (29 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1487626065
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