DR. RONALD LAWRENCE LEON M.D.
NPI 1467418830
Psychiatry & Neurology - Psychiatry in Antioch, CA

Q: What is Ronald Leon's NPI number?

The NPI number for Ronald Leon is 1467418830. It was assigned to this individual provider in the NPPES registry on April 25, 2006.

Q: What is Ronald Leon's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Ronald Leon was last updated on January 28, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.

Active since April 25, 2006PECOS EnrolledAccepts Medicare Assignment

3432 HILLCREST AVE, SUITE 175, ANTIOCH, CA 94531(925) 778-1444(925) 778-9014 Get Directions Write a Review

NPPES record last updated: January 28, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Dr. Ronald Lawrence Leon M.d. NPPES

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

DR. RONALD LAWRENCE LEON M.D. (NPI 1467418830) is an individual psychiatry provider in Antioch, California, licensed in California (A40420) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Wisconsin School Of Medicine (1981).

NPPES Registry Identity

NPI1467418830

Entity TypeIndividualMale

Primary Taxonomy2084P0800X

Provider Legal NameDR. RONALD LAWRENCE LEONCredential: M.D.

Location Address3432 HILLCREST AVE, SUITE 175Antioch, CA 94531-6301

Mailing Address3432 Hillcrest Ave, Suite 175Antioch, CA 94531-6301 · (925) 778-1444 · Fax (925) 778-9014

Phone(925) 778-1444

Fax(925) 778-9014

Sole ProprietorYes

Medical School CMSUniversity Of Wisconsin School Of MedicineGraduated 1981

Enumeration DateApril 25, 2006

Last NPPES UpdateJanuary 28, 2021

NPPES CertifiedJanuary 28, 2021

✔ NPI 1467418830 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ 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.

Also ListedSpecialistTaxonomy 174400000X · License AO40420 (CA)

3432 HILLCREST AVE, Antioch, CA 94531

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Ronald Lawrence Leon M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5092737460

PECOS Enrollment IDI20051228000752

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Ronald Leon reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Ronald L Leon MD Inc

Same address

Psychiatry

3432 HILLCREST AVE STE 175
Antioch, CA 94531

Reassigned Medicare billing, California enrollment

NPI 1497113724 (925) 778-1502

Contra Costa County

5.0 mi

Adult Mental Health

2311 LOVERIDGE RD, 1ST AND 2ND FLOORS
Pittsburg, CA 94565

Reassigned Medicare billing, California enrollment
530 clinicians in this Medicare group

NPI 1073691598 (925) 431-2600

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

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

639 services177 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

109 services66 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

15 services11 patients

Psychiatric diagnostic evaluation with medical services 90792

A psychiatric diagnostic evaluation with medical services is a comprehensive assessment. It includes a detailed examination of your mental health and physical wellbeing, as well as your personal and family history. This evaluation aids in creating an effective treatment plan.

14 services14 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

14 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94531 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$202.35 typical visit price

range $69.00 – $202.35

Typical copayment $50.58 (range $17.25 – $50.58)

Most-billed visit code 99205

Established Patient

$84.91 typical visit price

range $23.44 – $166.46

Typical copayment $21.22 (range $5.86 – $41.61)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. ELIKA MIRZAAGHA DDS

Dentist (General Practice)

3432 HILLCREST AVE, SUITE #250
ANTIOCH, CA 94531

Contra Costa County (925) 754-2145

DAVID A CAIN DDS, MSD

Dentist (Orthodontics and Dentofacial Orthopedics)

3432 HILLCREST AVE, SUITE 225
ANTIOCH, CA 94531

Contra Costa County (925) 756-6158

DAVID A CAIN DDS, MSD A PROFESSIONAL CORPORATION

Dentist (Orthodontics and Dentofacial Orthopedics)

3432 HILLCREST AVE, SUITE 225
ANTIOCH, CA 94531

Contra Costa County (925) 756-6158

DR. SEAN KYLE WRIGHT D.C.

Chiropractor

3432 HILLCREST AVE, STE 200
ANTIOCH, CA 94531

Contra Costa County (925) 757-3309

DR. JOSEPH NABIL GHOBRIAL D.D.S.

Dentist (General Practice)

3432 HILLCREST AVE, SUITE 250
ANTIOCH, CA 94531

Contra Costa County (925) 736-6658

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 Leon's NPI number?

The NPI number for Ronald Leon is 1467418830. It was assigned to this individual provider in the NPPES registry on April 25, 2006.

Where is Ronald Leon located?

Ronald Leon practices at 3432 Hillcrest Ave Suite 175, Antioch, CA 94531. The listed phone number is (925) 778-1444.

What is Ronald Leon's specialty?

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

Is Ronald Leon enrolled in Medicare?

Yes. Ronald Leon is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Ronald Leon's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ronald Leon reassigns Medicare benefits to 2 organizations: Ronald L Leon MD Inc (Antioch, CA) and Contra Costa County (Pittsburg, CA). Each 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 Ronald Leon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Ronald Leon was last updated on January 28, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.