Francis Mas, MD
NPI 1043431471 · Psychiatry Physician · New York, NY
Francis Mas, MD is a Psychiatry Physician provider in New York, NY (NPI 1043431471).
Provider details
- NPI number
- 1043431471
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 116188 (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
19 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 45 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clonazepam | 180 | 25 |
| Lamotrigine | 170 | 41 |
| Lorazepam | 123 | 19 |
| Quetiapine Fumarate | 102 | 20 |
| Clozapine | 88 | — |
| Olanzapine | 68 | — |
| Gabapentin | 63 | 14 |
| Venlafaxine Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-02
- Last updated
- 2007-07-08
Frequently asked questions
- What is Francis Mas's NPI number?
- Francis Mas's National Provider Identifier (NPI) is 1043431471, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Francis Mas's specialty?
- Francis Mas is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Francis Mas located?
- Francis Mas's practice location on file with NPPES is 65 Central Park W, New York, NY 10023-6007.
- What is Francis Mas's phone number?
- The practice phone number listed in the NPPES registry for Francis Mas is (212) 787-9600.
- Is Francis Mas's NPI active?
- Yes — Francis Mas's NPI (1043431471) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.