Billy Zou, M.D.
NPI 1538517172 · Child & Adolescent Psychiatry Physician · Boston, MA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Billy Zou, M.D. is a Child & Adolescent Psychiatry Physician provider in Boston, MA (NPI 1538517172).
Provider details
- NPI number
- 1538517172
- Entity type
- Individual
- Primary specialty
- Child & Adolescent Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 2674073 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-05-24
- Last updated
- 2021-03-31
- Certified
- 2021-03-31
Frequently asked questions
- What is Billy Zou's NPI number?
- Billy Zou's National Provider Identifier (NPI) is 1538517172, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Billy Zou's specialty?
- Billy Zou is listed in the NPPES registry with a primary specialty of Child & Adolescent Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Billy Zou located?
- Billy Zou's practice location on file with NPPES is 300 Longwood Ave Unit 2009, Boston, MA 02115-5724.
- What is Billy Zou's phone number?
- The practice phone number listed in the NPPES registry for Billy Zou is (617) 355-6000.
- Does Billy Zou accept Medicare?
- Billy Zou is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Billy Zou's NPI active?
- Yes — Billy Zou's NPI (1538517172) is active in the NPPES registry as of the last update on 2021-03-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.