JOHN MARTIN II MSW
NPI 1912666777
Social Worker - Clinical in Bethesda, MD

Active since December 09, 2021Opted out of Medicare · through Jan 16, 2027
4350 E WEST HWY STE 200, BETHESDA, MD 20814(813) 957-0504 Get Directions Write a Review

NPPES record last updated: January 7, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jan 7, 2026, Dec 9, 2021 (2 updates tracked since 2021).

About John Martin Ii Msw NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOHN MARTIN II MSW (NPI 1912666777) is an individual clinical provider in Bethesda, Maryland and active in the NPI registry since December 2021. He has opted out of Medicare through January 16, 2027.

NPPES Registry Identity

NPI1912666777
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameJOHN MARTIN IICredential: MSW
Location Address4350 E WEST HWY STE 200Bethesda, MD 20814-4426
Mailing Address4350 E West Hwy Ste 200Bethesda, MD 20814-4426
Sole ProprietorYes
Enumeration DateDecember 9, 2021
Last NPPES UpdateJanuary 7, 20262 updates tracked since enumeration
NPPES CertifiedJanuary 7, 2026
NPI 1912666777 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
4350 E WEST HWY STE 200, Bethesda, MD 20814

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Opted out of Medicare

John Martin Ii Msw has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from January 16, 2025 through January 16, 2027.

Opt-Out Effective DateJanuary 16, 2025
Opt-Out In Effect ThroughJanuary 16, 2027Opt-out affidavits renew automatically every two years unless cancelled

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Social Worker (Clinical)
4350 E WEST HWY STE 200
BETHESDA, MD 20814
Psychiatry & Neurology (Psychiatry)
4350 E WEST HWY STE 200
BETHESDA, MD 20814
Psychiatry & Neurology (Psychiatry)
4350 E WEST HWY STE 200
BETHESDA, MD 20814
Social Worker
4350 E WEST HWY STE 200
BETHESDA, MD 20814
Social Worker (Clinical)
4350 E WEST HWY STE 200
BETHESDA, MD 20814
Psychiatry & Neurology (Child & Adolescent Psychiatry)
4350 E WEST HWY STE 200
BETHESDA, MD 20814
Psychiatry & Neurology (Psychiatry)
4350 E WEST HWY STE 200
BETHESDA, MD 20814
Nurse Practitioner (Psychiatric/Mental Health)
4350 E WEST HWY STE 200
BETHESDA, MD 20814

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Martin's NPI number?

The NPI number for John Martin is 1912666777. It was assigned to this individual provider in the NPPES registry on December 9, 2021.

Where is John Martin located?

John Martin practices at 4350 E West Hwy Ste 200, Bethesda, MD 20814. The listed phone number is (813) 957-0504.

What is John Martin's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is John Martin enrolled in Medicare?

No. John Martin has opted out of Medicare through January 16, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

When was this NPI record last updated?

The NPPES record for John Martin was last updated on January 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.