M Michael Massumi, MD, PA

Primary specialty

Medical Specialty Clinic/CenterTaxonomy code 261QM2500X

Legal business name

M MICHAEL MASSUMI, MD, PA

Practice address

15201 Shady Grove Rd Ste 102
Rockville, MD 20850-3217

Phone

(410) 825-5905

Fax

(410) 825-7712

NPI assigned

Jul 16, 2026

Organization subpart

Yes

Parent organization

M. MICHAEL MASSUMI, M.D., P.A.As reported in NPPES

Registry information is reported by the provider to CMS and is not verified. About this source

Authorized official

Name

Dr. Mehrdad Michael Massumi, MDNPI 1407894975

Title

Owner/President

Phone

(410) 825-5905

Specialties & licenses 1

Addresses

Tax ID family

M Michael Massumi MD PA2 organizations share this tax ID, including this one

Other organizations with this tax ID 1

Organizations that report the same tax identification number in the National Provider Directory.

• M. Michael Massumi, M.D., P.a.

  • Medical Specialty Clinic/Center
  • Towson, MD
  • NPI 1295065407
  NPD tax ID

Locations

Parent organization (reported in NPPES) 1

This organization reports itself as a subpart in NPPES; the parent’s legal name matches this organization in the same state.

• M. Michael Massumi, M.D., P.a.

  • Medical Specialty Clinic/Center
  • Towson, MD
  • NPI 1295065407
  NPPES parent name

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• Mehrdad Michael Massumi, MD

  • Pain Medicine (Physical Medicine & Rehabilitation) Physician
  • Towson, MD
  • NPI 1407894975
  NPD (past) Authorized official

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1784160000000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1784160000000",
    "number": "1124948542",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "15201 SHADY GROVE RD STE 102",
            "city": "ROCKVILLE",
            "state": "MD",
            "postal_code": "208503217",
            "telephone_number": "410-825-5905",
            "fax_number": "410-825-7712"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "15201 SHADY GROVE RD STE 102",
            "city": "ROCKVILLE",
            "state": "MD",
            "postal_code": "208503217",
            "telephone_number": "410-825-5905",
            "fax_number": "410-825-7712"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "M MICHAEL MASSUMI, MD, PA",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "M. MICHAEL MASSUMI, M.D., P.A.",
        "enumeration_date": "2026-07-16",
        "last_updated": "2026-07-16",
        "certification_date": "2026-07-16",
        "status": "A",
        "authorized_official_last_name": "MASSUMI",
        "authorized_official_first_name": "MEHRDAD",
        "authorized_official_middle_name": "MICHAEL",
        "authorized_official_title_or_position": "OWNER/PRESIDENT",
        "authorized_official_telephone_number": "410-825-5905",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "261QM2500X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Medical Specialty",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• M Management Group, LLC
• M Management Group, LLC
• M Medical Group, Inc.
• M Medical Group, Inc.
• M Medical Group, Inc.
• M Rita Ghosh MD PC
• M Wellness LLC
• M-3 Information, LLC
• Dharmatissa M. Keppetipola
• Kar Leung Ma

• Medical Specialty Clinic/Center in Rockville, MD
• Providers in Rockville, MD by specialty
• Medical Specialty Clinic/Center in Maryland

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 16, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.