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ALI S. VAZIRI MD INC
NPI 1679507867
Internal Medicine - Gastroenterology in Napa, CA

Active since July 11, 2006CLIA 05D2291230 · Waiver
935 TRANCAS ST STE 1C, NAPA, CA 94558(707) 255-8207(707) 255-4628 Get Directions Write a Review

NPPES record last updated: March 12, 2019. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Ali S. Vaziri Md Inc NPPES

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

ALI S. VAZIRI MD INC (NPI 1679507867) is a healthcare organization registered as a gastroenterology in Napa, California and active in the NPI registry since July 2006. The organization holds a CLIA Waiver certificate valid through October 5, 2027 and lists Ali S Vaziri, President, as its authorized official.

NPPES Registry Identity

NPI1679507867
Entity TypeOrganization
Primary Taxonomy207RG0100X
Legal Business NameALI S. VAZIRI MD INC
Location Address935 TRANCAS ST STE 1CNapa, CA 94558-2942
Mailing Address935 Trancas St Ste 1cNapa, CA 94558-2942 · (707) 255-8207 · Fax (707) 255-4628
Phone(707) 255-8207
Fax(707) 255-4628
Organization SubpartNo
Authorized OfficialAli S VaziriPresident · (707) 255-8207
Enumeration DateJuly 11, 2006
Last NPPES UpdateMarch 12, 2019
✔ NPI 1679507867 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in CA · G71962
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
935 TRANCAS ST STE 1C, Napa, CA 94558
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ali S. Vaziri Md Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Ali S. Vaziri MD Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Ali Vaziri, M.D.
Gastroenterology
NPI 1710954706
935 TRANCAS ST STE 1C
Napa, CA 94558
(707) 255-8207
✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D2291230

Ali Vaziri, MD · Napa, CA
Active · expires Oct 5, 2027
CLIA Number05D2291230
Laboratory TypePhysician Office
Certificate Effective DateOctober 6, 2025
Certificate Expiration DateOctober 5, 2027
Laboratory DirectorAli Vaziri
Laboratory Phone(707) 255-8207
Laboratory LocationAli Vaziri, MD935 Trancas St, Suite 1C, Napa, CA 94558
CLIA data matches this NPI record on: Address Phone
This certificate is issued to a laboratory to perform only waived tests.

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 Ali S. Vaziri MD Inc's NPI number?

The NPI number for Ali S. Vaziri MD Inc is 1679507867. It was assigned to this organization in the NPPES registry on July 11, 2006.

Where is Ali S. Vaziri MD Inc located?

Ali S. Vaziri MD Inc is located at 935 Trancas St Ste 1C, Napa, CA 94558. The listed phone number is (707) 255-8207.

What is Ali S. Vaziri MD Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Ali S. Vaziri MD Inc enrolled in Medicare?

Yes. Ali S. Vaziri MD Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Ali S. Vaziri MD Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Gastroenterology) reassigns their Medicare billing to Ali S. Vaziri MD Inc. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Ali S. Vaziri MD Inc hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D2291230) is associated with this NPI, valid through October 5, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Ali S. Vaziri MD Inc was last updated on March 12, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.