BALDOMERO DE LEON MD INC
NPI 1063764488
Internal Medicine in Walnut Creek, CA

Q: What is Baldomero De Leon M.D. Inc.'s NPI number?

The NPI number for Baldomero De Leon M.D. Inc. is 1063764488. It was assigned to this organization in the NPPES registry on October 9, 2012. The provider is also known as Baldomero De Leon MD Inc.

Q: What is Baldomero De Leon M.D. Inc.'s specialty?

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

Active since October 09, 2012

1479 YGNACIO VALLEY RD STE 201, WALNUT CREEK, CA 94598(925) 932-1018(925) 932-7938 Get Directions Write a Review

NPPES record last updated: April 4, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Baldomero De Leon Md Inc NPPES

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

BALDOMERO DE LEON MD INC (NPI 1063764488) is a healthcare organization registered as an internal medicine in Walnut Creek, California and active in the NPI registry since October 2012. The organization lists Baldomero De Leon, Owner, as its authorized official.

NPPES Registry Identity

NPI1063764488

Entity TypeOrganization

Primary Taxonomy207R00000X

Legal Business NameBALDOMERO DE LEON M.D. INC.

Location Address1479 YGNACIO VALLEY RD STE 201Walnut Creek, CA 94598-2945

Mailing Address130 La Casa Via Ste 201Walnut Creek, CA 94598-3030 · (925) 932-1018 · Fax (925) 932-7938

Phone(925) 932-1018

Fax(925) 932-7938

Organization SubpartNo

Authorized OfficialBaldomero De LeonOwner · (925) 932-1018

Enumeration DateOctober 9, 2012

Last NPPES UpdateApril 4, 2018

✔ NPI 1063764488 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 · G35749

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.

1479 YGNACIO VALLEY RD STE 201, Walnut Creek, CA 94598

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Other Names 1

Other NameBaldomero De Leon Md Inc

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)

Baldomero De Leon 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 Baldomero De Leon MD Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Baldomero Deleon, M.D.

Internal Medicine

NPI 1891819090

1479 YGNACIO VALLEY RD SUITE #201
Walnut Creek, CA 94598

(925) 932-1018

✔ 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 Baldomero De Leon M.D. Inc.'s NPI number?

The NPI number for Baldomero De Leon M.D. Inc. is 1063764488. It was assigned to this organization in the NPPES registry on October 9, 2012. The provider is also known as Baldomero De Leon MD Inc.

Where is Baldomero De Leon M.D. Inc. located?

Baldomero De Leon M.D. Inc. is located at 1479 Ygnacio Valley Rd Ste 201, Walnut Creek, CA 94598. The listed phone number is (925) 932-1018.

What is Baldomero De Leon M.D. Inc.'s specialty?

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

Is Baldomero De Leon M.D. Inc. enrolled in Medicare?

Yes. Baldomero De Leon M.D. Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Baldomero De Leon M.D. Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Baldomero De Leon M.D. 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 Baldomero De Leon M.D. Inc. was last updated on April 4, 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.