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Cardiovascular Disease (Cardiology)

Zain Ahmed, MD

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

Summary

Dr. Zain Ahmed, MD is a cardiologist at 1062 Barnes Rd, Suite 300, Wallingford, CT 06492. Phone: (203) 265-9831. Accepts Medicare assignment. In 2024, Zain Ahmed had 507 Original Medicare patients and 1,030 services. NPI 1952782567. 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: Cardiologist (Medicare lists Cardiovascular Disease (Cardiology))
  • Address: 1062 Barnes Rd, Suite 300, Wallingford, CT 06492 · Directions (2 more locations)
  • Phone: (203) 265‑9831
  • Medicare: Accepts Medicare assignment
  • Hospitals: Hartford Hospital, Middlesex Hospital, Midstate Medical Center and 2 more
  • Group practice: Hartford Hospital (+2 more)
  • Medical school: Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University · graduated 2015 (11 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Zain Ahmed, 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 Zain Ahmed accept Medicare assignment?
Yes. Medicare's clinician data says Zain Ahmed 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 Zain Ahmed see?
In 2024, CMS data shows 507 Original Medicare patients and 1,030 services for Zain Ahmed. This counts Original Medicare only and measures volume, not quality.
What is Zain Ahmed's NPI number?
1952782567. 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 Zain Ahmed, 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 patients507
Services billed to Medicare1,030
Different services or procedures56
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)201 services
  2. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)146 services
  3. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)107 services
  4. Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)81 services
  5. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)64 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%
  • Arthritis51%
  • Ischemic heart disease50%
  • Atrial fibrillation40%
  • Anxiety39%

Hospitals where Zain Ahmed works

Medicare's Facility Affiliation Data lists Zain Ahmed 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.

Practice locations

Addresses where Zain Ahmed is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Zain Ahmed as a member of these groups (CMS data updated October 2, 2026).

  • Hartford Hospital1,044 clinicians in the group
  • Midstate Medical Center186 clinicians in the group
  • Consulting Cardiologists PC23 clinicians in the group

Specialties

Find other Cardiovascular Disease (Cardiology) doctors in Connecticut →

Other cardiologists in Wallingford

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

All cardiologists in Wallingford →

Other clinicians in Hartford Hospital

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

Clinician information

CredentialMD
Medical schoolClvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University
Graduation year2015 (11 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1952782567
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