Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

Helen Zhou, MD

Works at hospitals in Marlborough, MA · Leominster, MA · Worcester, MA · Massachusetts

Summary

Dr. Helen Zhou, MD is an internal medicine doctor at 28 Lord Rd, Suite 255, Marlborough, MA 01752. Phone: (508) 481-2890. Accepts Medicare assignment. NPI 1538746839. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

From official Medicare data

This page shows what Medicare's official clinician data says about Helen Zhou, 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 Helen Zhou accept Medicare assignment?
Yes. Medicare's clinician data says Helen Zhou 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.
What is Helen Zhou's NPI number?
1538746839. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Helen Zhou works

Medicare's Facility Affiliation Data lists Helen Zhou 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 Helen Zhou is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Helen Zhou as a member of this group (CMS data updated October 2, 2026).

  • Dr. He's Primary Care for Adults Inc2 clinicians in the group

Specialties

Find other Internal Medicine doctors in Massachusetts →

Other internal medicine doctors in Marlborough

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

All internal medicine doctors in Marlborough →

Other clinicians in Dr. He's Primary Care for Adults Inc

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

Clinician information

CredentialMD
Graduation year2021 (5 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1538746839
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