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DR. JOHN S. WILLIAMSON M.D.
NPI 1154341048
Internal Medicine - Cardiovascular Disease in Reno, NV

Active since July 20, 2006
1155 MILL ST, RENO, NV 89502(775) 982-4270(775) 982-4575 Get Directions Write a Review

NPPES record last updated: August 20, 2018. Verified against the NPPES registry weekly; last sync: September 27, 2026.

Record update history: Aug 20, 2018, Mar 17, 2018, Jun 13, 2017 (3 updates tracked since 2017).

About Dr. John S. Williamson M.d. NPPES

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

DR. JOHN S. WILLIAMSON M.D. (NPI 1154341048) is an individual cardiovascular disease provider in Reno, Nevada, licensed in Nevada (3868) and active in the NPI registry since July 2006.

NPPES Registry Identity

NPI1154341048
Entity TypeIndividualMale
Primary Taxonomy207RC0000X
Provider Legal NameDR. JOHN S. WILLIAMSONCredential: M.D.
Location Address1155 MILL STReno, NV 89502
Mailing Address850 Harvard WayReno, NV 89502-2055 · (775) 982-5262 · Fax (775) 982-5496
Phone(775) 982-4270
Fax(775) 982-4575
Sole ProprietorNo
Enumeration DateJuly 20, 2006
Last NPPES UpdateAugust 20, 20183 updates tracked since enumeration
✔ NPI 1154341048 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
License✔ Licensed in NV · 3868
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
1155 MILL ST, Reno, NV 89502
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Other Identifiers 3

MedicaidXPY183364CA
OtherCC2344NV · Blue Cross Blue Shield
Medicaid1154341048NV

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.

JENNA RASSUCHINE
Emergency Medicine
1155 MILL ST
RENO, NV 89502
Washoe County (775) 324-4040
NICHOLAS ROSE MD
Radiology (Vascular & Interventional Radiology)
1155 MILL ST
RENO, NV 89502
Washoe County (775) 327-5174
DR. BROOKE TAYLOR TOLLER PHARMD
Pharmacist (Ambulatory Care)
1155 MILL ST
RENO, NV 89502
Washoe County (775) 982-4406
CORINNE E JOHNSON GARNER RN, APRN
Registered Nurse (Neonatal Intensive Care)
1155 MILL ST
RENO, NV 89502
Washoe County (775) 982-7890
DR. THOMAS S. DAVEE M.D.
Internal Medicine (Cardiovascular Disease)
1155 MILL ST
RENO, NV 89502
Washoe County (775) 982-7878
DR. CHRISTIE ELLIOTT MD
Pathology (Anatomic Pathology & Clinical Pathology)
1155 MILL ST
RENO, NV 89502
Washoe County (775) 982-4545
LEAH KATHLEEN MACHEN M.D.
Hospitalist
1155 MILL ST
RENO, NV 89502
Washoe County (775) 982-7878
HAMAD RASHID ASHRAF MD
Hospitalist
1155 MILL ST
RENO, NV 89502
Washoe County (775) 982-7878

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 John Williamson's NPI number?

The NPI number for John Williamson is 1154341048. It was assigned to this individual provider in the NPPES registry on July 20, 2006.

Where is John Williamson located?

John Williamson practices at 1155 Mill St, Reno, NV 89502. The listed phone number is (775) 982-4270.

What is John Williamson's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

When was this NPI record last updated?

The NPPES record for John Williamson was last updated on August 20, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years 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.