Margaret Chang, M.D., PH.D.
NPI 1194067678 · Pediatric Rheumatology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Chang, M.D., PH.D. is a Pediatric Rheumatology Physician provider in Boston, MA (NPI 1194067678).
Provider details
- NPI number
- 1194067678
- Entity type
- Individual
- Primary specialty
- Pediatric Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PH.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 265841 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 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
- 2013-03-21
- Last updated
- 2019-02-12
Frequently asked questions
- What is Margaret Chang's NPI number?
- Margaret Chang's National Provider Identifier (NPI) is 1194067678, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Chang's specialty?
- Margaret Chang is listed in the NPPES registry with a primary specialty of Pediatric Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Margaret Chang located?
- Margaret Chang's practice location on file with NPPES is 300 Longwood Ave, Boston, MA 02115-5724.
- What is Margaret Chang's phone number?
- The practice phone number listed in the NPPES registry for Margaret Chang is (617) 355-8241.
- Does Margaret Chang accept Medicare?
- Margaret Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Chang's NPI active?
- Yes — Margaret Chang's NPI (1194067678) is active in the NPPES registry as of the last update on 2019-02-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.