Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Medical Diagnostic Associates

Cardiovascular Disease Physician in Potomac, MD · enumerated 2007 · authorized official Dianna Farzin, Owner.

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

National Provider Identifier

1427178383

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Registry record

Entity type Organization (Type 2)

Legal business name Medical Diagnostic Associates

Practice address 10600 River Oaks Ln, Potomac, MD, 20854

Phone (301) 983-5787

Fax (301) 983-3935

Enumeration date Apr 1, 2007

Last updated in NPPES Jul 1, 2008

Taxonomy & classification

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License D24061 (MD) Primary

Authorized official

Name Dianna Farzin

Title Owner

Phone (301) 983-5787

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.

Read the full guide → Validate an NPI →

Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2008-07-01. Verify at npiregistry.cms.hhs.gov.

Where is Medical Diagnostic Associates located?

The practice location on file with NPPES is in Potomac, MD.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-07-01.