Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Joan Marks Tendrich, AU.D.

Audiologist in Chevy Chase, MD · enumerated 2006.

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

National Provider Identifier

1376639849

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Registry record

Entity type Individual (Type 1)

Name Dr. Joan Marks Tendrich

Credential AU.D.

Sex Female

Practice address 5530 Wisconsin Ave, Suite 1500, Chevy Chase, MD, 20815

Phone (301) 656-8630

Enumeration date Oct 4, 2006

Last updated in NPPES Feb 21, 2017

Taxonomy & licenses

231H00000X Audiologist Speech, Language and Hearing Service Providers · License 01407 (MD) Primary

AUD · Doctor of Audiology: A licensed audiologist diagnosing and treating hearing and balance disorders. About the AUD credential

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

Where does Joan Tendrich practice?

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

What is the NPI number for Joan Tendrich?

The National Provider Identifier (NPI) for Joan Tendrich is 1376639849, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-02-21.