Harold Mermelstein, M.D., P.C.
NPI 1275720369 · Dermatology Physician · Scarsdale, NY
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Harold Mermelstein, M.D., P.C. is a Dermatology Physician organization in Scarsdale, NY (NPI 1275720369).
Provider details
- NPI number
- 1275720369
- Entity type
- Organization
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Harold Mermelstein, Business Owner(914) 667-2242
- License
- 136631 (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
18 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
Other names (DBA / former)
- Doing business as
- Harold Mermelstein, M.D., P.C
Registry dates
- Enumerated
- 2007-10-02
- Last updated
- 2014-05-20
Frequently asked questions
- What is Harold Mermelstein, M.D., P.C.'s NPI number?
- Harold Mermelstein, M.D., P.C.'s National Provider Identifier (NPI) is 1275720369, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Harold Mermelstein, M.D., P.C.?
- Harold Mermelstein, M.D., P.C. is classified in the NPPES registry as Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Harold Mermelstein, M.D., P.C. located?
- Harold Mermelstein, M.D., P.C.'s practice location on file with NPPES is 1075 Central Park Ave, Scarsdale, NY 10583-3242.
- What is Harold Mermelstein, M.D., P.C.'s phone number?
- The practice phone number listed in the NPPES registry for Harold Mermelstein, M.D., P.C. is (914) 667-2242.
- Does Harold Mermelstein, M.D., P.C. accept Medicare?
- Harold Mermelstein, M.D., P.C. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Harold Mermelstein, M.D., P.C.?
- The authorized official listed on Harold Mermelstein, M.D., P.C.'s NPPES record is Harold Mermelstein, Business Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Harold Mermelstein, M.D., P.C.'s NPI active?
- Yes — Harold Mermelstein, M.D., P.C.'s NPI (1275720369) is active in the NPPES registry as of the last update on 2014-05-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.