Mason Chang, M.D.
NPI 1437546736 · Psychiatry Physician · New Hyde Park, NY
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mason Chang, M.D. is a Psychiatry Physician provider in New Hyde Park, NY (NPI 1437546736).
Provider details
- NPI number
- 1437546736
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 30 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Olanzapine | 102 |
| Benztropine Mesylate | 75 |
| Gabapentin | 53 |
| Escitalopram Oxalate | 49 |
| Divalproex Sodiumbrand: Divalproex Sodium Er | 41 |
| Clozapine | 40 |
| Olanzapine/Samidorphan Malatebrand: Lybalvi | 37 |
| Ramelteon | 35 |
| Quetiapine Fumarate | 32 |
| Paliperidone Palmitate |
Practice location
Mailing address
Additional practice locations (1)
- 111 E 210th StBronx, NY 10467-2401Phone: (718) 920-4321
Registry dates
- Enumerated
- 2015-04-24
- Last updated
- 2019-12-18
- Certified
- 2019-12-18
Frequently asked questions
- What is Mason Chang's NPI number?
- Mason Chang's National Provider Identifier (NPI) is 1437546736, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mason Chang's specialty?
- Mason Chang is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Mason Chang located?
- Mason Chang's practice location on file with NPPES is 1951 Stewart Ave, New Hyde Park, NY 11040-1625.
- What is Mason Chang's phone number?
- The practice phone number listed in the NPPES registry for Mason Chang is (516) 260-1043.
- Does Mason Chang accept Medicare?
- Mason Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mason Chang's NPI active?
- Yes — Mason Chang's NPI (1437546736) is active in the NPPES registry as of the last update on 2019-12-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.