RONALD L LEON MD INC
NPI 1497113724
Psychiatry & Neurology - Psychiatry in Antioch, CA

Q: What is Ronald L Leon MD Inc's NPI number?

The NPI number for Ronald L Leon MD Inc is 1497113724. It was assigned to this organization in the NPPES registry on February 1, 2016.

Q: What is Ronald L Leon MD Inc's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Active since February 01, 2016

3432 HILLCREST AVE STE 175, ANTIOCH, CA 94531(925) 778-1502(925) 753-1397 Get Directions Write a Review

NPPES record last updated: June 6, 2016. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Ronald L Leon Md Inc NPPES

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

RONALD L LEON MD INC (NPI 1497113724) is a healthcare organization registered as a psychiatry in Antioch, California and active in the NPI registry since February 2016. The organization lists Ronald L Leon, President, as its authorized official.

NPPES Registry Identity

NPI1497113724

Entity TypeOrganization

Primary Taxonomy2084P0800X

Legal Business NameRONALD L LEON MD INC

Location Address3432 HILLCREST AVE STE 175Antioch, CA 94531-6343

Mailing Address3432 Hillcrest Ave Ste 175Antioch, CA 94531-6343 · (925) 778-1502 · Fax (925) 753-1397

Phone(925) 778-1502

Fax(925) 753-1397

Organization SubpartNo

Authorized OfficialRonald L LeonPresident · (925) 778-1502

Enumeration DateFebruary 1, 2016

Last NPPES UpdateJune 6, 2016

✔ NPI 1497113724 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians

Taxonomy Code2084P0800X

License✔ Licensed in CA · A40420

Definition

A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

3432 HILLCREST AVE STE 175, Antioch, CA 94531

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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)

Ronald L 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 Ronald L Leon MD Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Ronald Leon, M.D.

Psychiatry

NPI 1467418830

3432 HILLCREST AVE SUITE 175
Antioch, CA 94531

(925) 778-1444

✔ 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 Ronald L Leon MD Inc's NPI number?

The NPI number for Ronald L Leon MD Inc is 1497113724. It was assigned to this organization in the NPPES registry on February 1, 2016.

Where is Ronald L Leon MD Inc located?

Ronald L Leon MD Inc is located at 3432 Hillcrest Ave Ste 175, Antioch, CA 94531. The listed phone number is (925) 778-1502.

What is Ronald L Leon MD Inc's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Ronald L Leon MD Inc enrolled in Medicare?

Yes. Ronald L Leon MD Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Ronald L Leon MD Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Psychiatry) reassigns their Medicare billing to Ronald L Leon 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 Ronald L Leon MD Inc was last updated on June 6, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.