What is John Martin's NPI number?

John Martin's National Provider Identifier (NPI) is 1912666777, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is John Martin's specialty?

John Martin is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).

Where is John Martin located?

John Martin's practice location on file with NPPES is 4350 E West Hwy Ste 200, Bethesda, MD 20814-4426.

What is John Martin's phone number?

The practice phone number listed in the NPPES registry for John Martin is (813) 957-0504.

Is John Martin's NPI active?

Yes — John Martin's NPI (1912666777) is active in the NPPES registry as of the last update on 2026-01-07.

IndividualActive

John Martin, MSW

NPI 1912666777 · Clinical Social Worker · Bethesda, MD

John Martin, MSW is a Clinical Social Worker provider in Bethesda, MD (NPI 1912666777).

Provider details

NPI number: 1912666777
Entity type: Individual
Primary specialty: Clinical Social WorkerBehavioral Health & Social Service Providers
Credential: MSW
Sex: Male
Sole proprietor: Yes

Specialties & taxonomies

Clinical Social WorkerPrimary1041C0700X
Behavioral Health & Social Service Providers

Profile Score

Established profile(55/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
4 yrs in NPPES registry
Profile completeness38% of score
83% 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

4350 E West Hwy Ste 200

Bethesda, MD 20814-4426

Phone: (813) 957-0504

Street-level locationGet directions

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Mailing address