DR. TIMOTHY JOSEPH WIESS DO
NPI 1821787243
General Practice in Bethesda, MD

Q: What is Timothy Wiess's NPI number?

The NPI number for Timothy Wiess is 1821787243. It was assigned to this individual provider in the NPPES registry on May 2, 2023.

Q: What is Timothy Wiess's specialty?

The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.

Q: When was this NPI record last updated?

The NPPES record for Timothy Wiess was last updated on February 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since May 02, 2023

PSYCHIATRY 8901 WISCONSIN AVENUE, BETHESDA, MD 20889(301) 319-2498 Get Directions Write a Review

NPPES record last updated: February 17, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 2, 2025, May 2, 2023 (2 updates tracked since 2023).

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About Dr. Timothy Joseph Wiess Do NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. TIMOTHY JOSEPH WIESS DO (NPI 1821787243) is an individual general practice provider in Bethesda, Maryland, licensed in Virginia (0102209935) and active in the NPI registry since May 2023.

NPPES Registry Identity

NPI1821787243

Entity TypeIndividualMale

Primary Taxonomy208D00000X

Provider Legal NameDR. TIMOTHY JOSEPH WIESSCredential: DO

Location AddressPSYCHIATRY 8901 WISCONSIN AVENUEBethesda, MD 20889-0001

Mailing Address8901 Rockville PikeBethesda, MD 20889-0001

Phone(301) 319-2498

Sole ProprietorNo

Enumeration DateMay 2, 2023

Last NPPES UpdateFebruary 17, 20262 updates tracked since enumeration

NPPES CertifiedFebruary 17, 2026

✔ NPI 1821787243 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyGeneral PracticeAllopathic & Osteopathic Physicians

Taxonomy Code208D00000X

License✔ Licensed in VA · 0102209935

Definition

A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions. Source: National Uniform Claim Committee

PSYCHIATRY 8901 WISCONSIN AVENUE, Bethesda, MD 20889

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Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Timothy Wiess's NPI number?

The NPI number for Timothy Wiess is 1821787243. It was assigned to this individual provider in the NPPES registry on May 2, 2023.

Where is Timothy Wiess located?

Timothy Wiess practices at Psychiatry 8901 Wisconsin Avenue, Bethesda, MD 20889. The listed phone number is (301) 319-2498.

What is Timothy Wiess's specialty?

The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.

When was this NPI record last updated?

The NPPES record for Timothy Wiess was last updated on February 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.