GERVACIO D DIAZ III MD INC
NPI 1437221025
Internal Medicine in Modesto, CA

Q: What is Gervacio D Diaz III MD Inc's NPI number?

The NPI number for Gervacio D Diaz III MD Inc is 1437221025. It was assigned to this organization in the NPPES registry on November 15, 2006.

Q: What is Gervacio D Diaz III MD Inc's specialty?

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

Active since November 15, 2006

2013 COFFEE RD, MODESTO, CA 95355(209) 529-8506(209) 529-8524 Get Directions Write a Review

NPPES record last updated: March 13, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 13, 2023, Feb 13, 2020 (2 updates tracked since 2020).

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About Gervacio D Diaz Iii Md Inc NPPES

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

GERVACIO D DIAZ III MD INC (NPI 1437221025) is a healthcare organization registered as an internal medicine in Modesto, California and active in the NPI registry since November 2006. The organization lists Gervacio D Diaz, President, as its authorized official.

NPPES Registry Identity

NPI1437221025

Entity TypeOrganization

Primary Taxonomy207R00000X

Legal Business NameGERVACIO D DIAZ III MD INC

Location Address2013 COFFEE RDModesto, CA 95355-2405

Mailing Address2013 Coffee RdModesto, CA 95355-2405 · (209) 529-8506 · Fax (209) 529-8524

Phone(209) 529-8506

Fax(209) 529-8524

Organization SubpartNo

Authorized OfficialGervacio D DiazPresident · (209) 529-8506

Enumeration DateNovember 15, 2006

Last NPPES UpdateMarch 13, 20232 updates tracked since enumeration

NPPES CertifiedMarch 13, 2023

✔ NPI 1437221025 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CA · A69801

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.

2013 COFFEE RD, Modesto, CA 95355

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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)

Gervacio D Diaz Iii 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 Gervacio D Diaz III MD Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Gervacio Diaz, M.D.

Internal Medicine

NPI 1700835451

2013 COFFEE RD
Modesto, CA 95355

(209) 529-8506

✔ PECOSSame 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 Gervacio D Diaz III MD Inc's NPI number?

The NPI number for Gervacio D Diaz III MD Inc is 1437221025. It was assigned to this organization in the NPPES registry on November 15, 2006.

Where is Gervacio D Diaz III MD Inc located?

Gervacio D Diaz III MD Inc is located at 2013 Coffee Rd, Modesto, CA 95355. The listed phone number is (209) 529-8506.

What is Gervacio D Diaz III MD Inc's specialty?

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

Is Gervacio D Diaz III MD Inc enrolled in Medicare?

Yes. Gervacio D Diaz III MD Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Gervacio D Diaz III MD Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Gervacio D Diaz III 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.

When was this NPI record last updated?

The NPPES record for Gervacio D Diaz III MD Inc was last updated on March 13, 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.