IRINA V KOLOMEY D O
NPI 1821779851
Internal Medicine in Walnut Creek, CA

Active since July 31, 2023
1808 SAN MIGUEL DR, WALNUT CREEK, CA 94596(925) 528-2663 Get Directions Write a Review

NPPES record last updated: September 14, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Irina V Kolomey D O NPPES

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

IRINA V KOLOMEY D O (NPI 1821779851) is a healthcare organization registered as an internal medicine in Walnut Creek, California and active in the NPI registry since July 2023. The organization maintains a secondary practice location in Antioch and lists Irina Victor Kolomey, President, as its authorized official.

NPPES Registry Identity

NPI1821779851
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameIRINA V KOLOMEY D O
Location Address1808 SAN MIGUEL DRWalnut Creek, CA 94596-8606
Mailing Address1808 San Miguel DrWalnut Creek, CA 94596-8606 · (925) 363-3395
Organization SubpartNo
Authorized OfficialIrina Victor KolomeyPresident · (925) 363-3395
Enumeration DateJuly 31, 2023
Last NPPES UpdateSeptember 14, 2023
NPPES CertifiedSeptember 14, 2023
✔ NPI 1821779851 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
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.
1808 SAN MIGUEL DR, Walnut Creek, CA 94596

Secondary Practice Location 1

Location 12350 Country Hills Dr Ste BAntioch, CA 94509-7436 · Phone (925) 528-2663

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)

Irina V Kolomey D O 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 Irina V Kolomey D O, which bills Medicare for the services this clinician delivers.

Clinician (1)

Internal Medicine
NPI 1104062173
1804 SAN MIGUEL DR
Walnut Creek, CA 94596
(925) 363-3395
✔ 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.

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 Irina V Kolomey D O's NPI number?

The NPI number for Irina V Kolomey D O is 1821779851. It was assigned to this organization in the NPPES registry on July 31, 2023.

Where is Irina V Kolomey D O located?

Irina V Kolomey D O is located at 1808 San Miguel Dr, Walnut Creek, CA 94596. The listed phone number is (925) 528-2663.

What is Irina V Kolomey D O's specialty?

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

Is Irina V Kolomey D O enrolled in Medicare?

Yes. Irina V Kolomey D O is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Irina V Kolomey D O?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Irina V Kolomey D O. 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.

When was this NPI record last updated?

The NPPES record for Irina V Kolomey D O was last updated on September 14, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.