Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. ANNETTE MARIE VONTHUN MD
NPI 1952365934
Internal Medicine in Bethesda, MD

Active since April 14, 2006
8901 WISCONSIN AVE, BETHESDA, MD 20889(301) 295-4611 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Annette Marie Vonthun Md NPPES

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

DR. ANNETTE MARIE VONTHUN MD (NPI 1952365934) is an individual internal medicine provider in Bethesda, Maryland, licensed in Louisiana (L-12463R) and active in the NPI registry since April 2006.

NPPES Registry Identity

NPI1952365934
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. ANNETTE MARIE VONTHUNCredential: MD
Location Address8901 WISCONSIN AVEBethesda, MD 20889-0001
Mailing Address4910 Cloister DrRockville, MD 20852-3362 · (301) 530-0823
Sole ProprietorNo
Enumeration DateApril 14, 2006
Last NPPES UpdateJuly 13, 2026
NPI 1952365934 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License Licensed in LA · L-12463R
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
8901 WISCONSIN AVE, Bethesda, MD 20889

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Pharmacist
8901 WISCONSIN AVE
BETHESDA, MD 20889
Radiology (Diagnostic Radiology)
8901 WISCONSIN AVE
BETHESDA, MD 20889
Student in an Organized Health Care Education/Training Program
8901 WISCONSIN AVE
BETHESDA, MD 20889
Internal Medicine (Infectious Disease)
8901 WISCONSIN AVE
BETHESDA, MD 20889
General Practice
8901 WISCONSIN AVE
BETHESDA, MD 20889
General Practice
8901 WISCONSIN AVE
BETHESDA, MD 20889
Psychiatry & Neurology (Psychiatry)
8901 WISCONSIN AVE, WRNMMC, NICOE, BUILDING 51
BETHESDA, MD 20889
Physical Therapist
8901 WISCONSIN AVE
BETHESDA, MD 20889

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 Annette Vonthun's NPI number?

The NPI number for Annette Vonthun is 1952365934. It was assigned to this individual provider in the NPPES registry on April 14, 2006.

Where is Annette Vonthun located?

Annette Vonthun practices at 8901 Wisconsin Ave, Bethesda, MD 20889. The listed phone number is (301) 295-4611.

What is Annette Vonthun's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for Annette Vonthun was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 42 days 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.