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Family Practice

Zachary T. Bay, MD

Works at hospitals in Worcester, MA · Massachusetts

Summary

Dr. Zachary T. Bay, MD is a family doctor at 19 Tacoma St, Worcester, MA 01605. Phone: (508) 852-1805. May accept Medicare assignment. NPI 1568801397. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

  • Specialty: Family doctor (Medicare lists Family Practice)
  • Address: 19 Tacoma St, Worcester, MA 01605 · Directions (1 more location)
  • Phone: (508) 852‑1805
  • Medicare: May accept Medicare assignment
  • Hospital: UMass Memorial Medical Center/University Campus
  • Group practice: Family Health Center of Worcester, Inc. (+1 more)
  • Medical school: Northwestern University Feinberg Medical School · graduated 2013 (13 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Zachary T. Bay, 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 Zachary T. Bay accept Medicare assignment?
Medicare's clinician data says Zachary T. Bay may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
What is Zachary T. Bay's NPI number?
1568801397. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Zachary T. Bay works

Medicare's Facility Affiliation Data lists Zachary T. Bay 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 Zachary T. Bay is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Zachary T. Bay as a member of these groups (CMS data updated October 2, 2026).

  • Family Health Center of Worcester, Inc.92 clinicians in the group
  • Edward M Kennedy Community Health Center Inc67 clinicians in the group

Specialties

Find other Family Practice doctors in Massachusetts →

Other family doctors in Worcester

Clinicians with the same Medicare primary specialty in Worcester, MA — not a recommendation.

All family doctors in Worcester →

Other clinicians in Family Health Center of Worcester, Inc.

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

Clinician information

CredentialMD
Medical schoolNorthwestern University Feinberg Medical School
Graduation year2013 (13 years since medical school)
Gender (as listed)Male
Medicare assignmentMay accept for some services
NPI (National Provider Identifier)1568801397
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. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians