John Mcmahon DO
About this NPIWhat this record shows.
NPI 1821258062 is registered to John Mcmahon DO, a Sports Medicine (Internal Medicine) Physician practising at 1900 Lafayette Rd, Suite A in Portsmouth, New Hampshire. Sports Medicine (Internal Medicine) Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. John Mcmahon DO has been enumerated in the National Provider Identifier (NPI) registry since 2008.
Your brand here.
Secondary identifiers
Additional identifiers this provider has registered with NPPES. Used by medical billers, credentialers, and insurance verifiers to cross-reference claims and enrollments.
Medicaid
- 30228921NH
Source: NPPES public registry.
Medicare enrollment
This provider holds 2 Medicare enrollments on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Practitioner
- I20110803000147Internal MedicineME
- I20130821000514Sports MedicineNH
Source: CMS PECOS public enrollment file.
Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans John Mcmahon DO accepts. To confirm in-network status with your specific health plan, contact John Mcmahon DO directly at (603) 431-1121.
Frequently asked
Yes. NPI 1821258062 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Sports Medicine (Internal Medicine) Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (603) 431-1121.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. John Mcmahon DO is a Type-1 individual NPI.