Mark S. Mcmahon M.D. PC
NPI 1811260714 · Specialist · New York, NY
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark S. Mcmahon M.D. PC is a Specialist organization in New York, NY (NPI 1811260714).
Provider details
- NPI number
- 1811260714
- Entity type
- Organization
- Primary specialty
- SpecialistOther Service Providers
- Organization subpart
- No
- Authorized official
- Michelle Carrero, Office Manager/Medical Biller(212) 717-1405
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 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
- 2012-02-23
- Last updated
- 2012-02-23
Frequently asked questions
- What is Mark S. Mcmahon M.D. PC's NPI number?
- Mark S. Mcmahon M.D. PC's National Provider Identifier (NPI) is 1811260714, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Mark S. Mcmahon M.D. PC?
- Mark S. Mcmahon M.D. PC is classified in the NPPES registry as Specialist (Other Service Providers).
- Where is Mark S. Mcmahon M.D. PC located?
- Mark S. Mcmahon M.D. PC's practice location on file with NPPES is 876 Park Ave, New York, NY 10075-1832.
- What is Mark S. Mcmahon M.D. PC's phone number?
- The practice phone number listed in the NPPES registry for Mark S. Mcmahon M.D. PC is (212) 717-1405.
- Does Mark S. Mcmahon M.D. PC accept Medicare?
- Mark S. Mcmahon M.D. PC 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 Mark S. Mcmahon M.D. PC?
- The authorized official listed on Mark S. Mcmahon M.D. PC's NPPES record is Michelle Carrero, Office Manager/Medical Biller. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Mark S. Mcmahon M.D. PC's NPI active?
- Yes — Mark S. Mcmahon M.D. PC's NPI (1811260714) is active in the NPPES registry as of the last update on 2012-02-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.