NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Oak Anesthesia Associates LLC

Anesthesiology Physician in Chevy Chase, MD · enumerated 2026 · authorized official Mark Hestrin, President.

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

National Provider Identifier

1609725498

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Oak Anesthesia Associates LLC
Practice address 5530 Wisconsin Ave Ste 1455, Chevy Chase, MD, 20815
Phone (310) 903-1980
Enumeration date Jan 24, 2026
Last updated in NPPES Jul 8, 2026

Taxonomy & classification

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Mark Hestrin
Title President
Phone (310) 903-1980

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 the NPI number for Oak Anesthesia Associates LLC?
The NPI for Oak Anesthesia Associates LLC is 1609725498, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Oak Anesthesia Associates LLC?
NPPES lists Mark Hestrin (President) as the authorized official for this organization.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-07-08.