Gregory Chang, MD, MBA
NPI 1154940419 · Emergency Medical Services (Emergency Medicine) Physician · New York, NY
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Chang, MD, MBA is a Emergency Medical Services (Emergency Medicine) Physician provider in New York, NY (NPI 1154940419).
Provider details
- NPI number
- 1154940419
- Entity type
- Individual
- Primary specialty
- Emergency Medical Services (Emergency Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, MBA
- Sex
- Male
- Sole proprietor
- No
- License
- 326294-01 (NY)
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
6 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
- 2020-04-15
- Last updated
- 2025-03-07
- Certified
- 2025-03-07
Frequently asked questions
- What is Gregory Chang's NPI number?
- Gregory Chang's National Provider Identifier (NPI) is 1154940419, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Chang's specialty?
- Gregory Chang is listed in the NPPES registry with a primary specialty of Emergency Medical Services (Emergency Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Chang located?
- Gregory Chang's practice location on file with NPPES is 1275 York Ave, New York, NY 10065-6007.
- What is Gregory Chang's phone number?
- The practice phone number listed in the NPPES registry for Gregory Chang is (718) 250-8000.
- Does Gregory Chang accept Medicare?
- Gregory Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Chang's NPI active?
- Yes — Gregory Chang's NPI (1154940419) is active in the NPPES registry as of the last update on 2025-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.