Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mehrdad Michael Massumi, MD

Pain Medicine (Physical Medicine & Rehabilitation) Physician in Towson, MD · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1407894975

Verified

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Registry record

Entity type Individual (Type 1)

Name Mehrdad Michael Massumi

Credential MD

Sex Male

Practice address Towson, MD, 21204

Phone (410) 825-5905

Fax (410) 825-7712

Enumeration date Jun 4, 2006

Last updated in NPPES Jul 9, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

2081P2900X Pain Medicine (Physical Medicine & Rehabilitation) Physician Allopathic & Osteopathic Physicians · License D32831 (MD) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
4133322	Other	MD	AETNA
25221	Other	MD	JOHNS HOPKINS EHP
25933	Other	MD	ONENETPPO
25933	Other	MD	MDIPA
25933	Other	MD	OPTIMUM CHOICE
452330	Other	MD	AETNA HMO
25933	Other	MD	MAMSI LIFE & HEALTH
401629-01	Other	MD	CAREFIRST BCBS
E658	Other	DC	CAREFIRST BLUECHOICE
03818011	Other	MD	UNITED HEALTH CARE
233387	Other	MD	KAISER PERMANENTE
76334	Other	MD	FIRST HEALTH

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Where does Mehrdad Massumi practice?

The practice location on file with NPPES is in Towson, MD. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Mehrdad Massumi?

The National Provider Identifier (NPI) for Mehrdad Massumi is 1407894975, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.