Helen Zhou, MD
NPI 1538746839 · Internal Medicine Physician · Marlborough, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Helen Zhou, MD is a Internal Medicine Physician provider in Marlborough, MA (NPI 1538746839).
Provider details
- NPI number
- 1538746839
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 1018398 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
5 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$546 across 25 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-03-24
- Last updated
- 2026-04-23
- Certified
- 2026-04-23
Frequently asked questions
- What is Helen Zhou's NPI number?
- Helen Zhou's National Provider Identifier (NPI) is 1538746839, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Helen Zhou's specialty?
- Helen Zhou is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Helen Zhou located?
- Helen Zhou's practice location on file with NPPES is 28 Lord Rd Ste 255, Marlborough, MA 01752-4549.
- What is Helen Zhou's phone number?
- The practice phone number listed in the NPPES registry for Helen Zhou is (508) 481-2890.
- Does Helen Zhou accept Medicare?
- Helen Zhou is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Helen Zhou's NPI active?
- Yes — Helen Zhou's NPI (1538746839) is active in the NPPES registry as of the last update on 2026-04-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.