Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Washington Orthopaedic & Knee Clinic

Orthopaedic Surgery Physician in Clinton, MD · enumerated 2006 · authorized official Mehrdad Malek, President.

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

National Provider Identifier

1689623712

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Registry record

Entity type Organization (Type 2)

Legal business name Washington Orthopaedic & Knee Clinic

Practice address 7801 Old Branch Avenue, Suite 409, Clinton, MD, 20635

Phone (240) 318-0420

Fax (240) 318-0433

Enumeration date May 8, 2006

Last updated in NPPES Oct 2, 2007

Taxonomy & classification

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Mehrdad Malek

Title President

Phone (703) 448-8010

Other identifiers

Identifier	Type	State	Issuer
504174	Other	-	AETNA
H295WA	Other	MD	CAREFIST MARYLAND
021798	Other	-	ANTHEM BLUE SHIELD

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

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Washington Orthopaedic & Knee Clinic?

Washington Orthopaedic & Knee Clinic is registered in NPPES as a Orthopaedic Surgery Physician (its primary provider taxonomy).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-02.