DR. JAVIER L. DELEON M.D.
NPI 1598833790
Internal Medicine in Walnut Creek, CA

Active since December 04, 2006PECOS EnrolledAccepts Medicare Assignment
1210 ROSSMOOR PKWY, WALNUT CREEK, CA 94595(925) 933-1210(925) 933-2051 Get Directions Write a Review

NPPES record last updated: December 15, 2021. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Javier L. Deleon M.d. NPPES

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

DR. JAVIER L. DELEON M.D. (NPI 1598833790) is an individual internal medicine provider in Walnut Creek, California, licensed in California (A87324) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS and is a graduate of Other (2002).

NPPES Registry Identity

NPI1598833790
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. JAVIER L. DELEONCredential: M.D.
Location Address1210 ROSSMOOR PKWYWalnut Creek, CA 94595-2501
Mailing Address1210 Rossmoor PkwyWalnut Creek, CA 94595-2501 · (925) 933-1210 · Fax (925) 933-2051
Fax(925) 933-2051
Sole ProprietorNo
Medical School CMSOtherGraduated 2002
Enumeration DateDecember 4, 2006
Last NPPES UpdateDecember 15, 2021
NPI 1598833790 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 · A87324
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.

1210 ROSSMOOR PKWY, Walnut Creek, CA 94595

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Dr. Javier L. Deleon 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 ID941222814
PECOS Enrollment IDI20051220001006
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94595 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
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
Most-billed visit code 99214
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 8

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

Internal Medicine
1210 ROSSMOOR PKWY
WALNUT CREEK, CA 94595
Physician Assistant
1210 ROSSMOOR PKWY
WALNUT CREEK, CA 94595
Internal Medicine
1210 ROSSMOOR PKWY
WALNUT CREEK, CA 94595
Internal Medicine
1210 ROSSMOOR PKWY
WALNUT CREEK, CA 94595
Internal Medicine
1210 ROSSMOOR PKWY
WALNUT CREEK, CA 94595
Internal Medicine (Rheumatology)
1210 ROSSMOOR PKWY
WALNUT CREEK, CA 94595
Internal Medicine
1210 ROSSMOOR PKWY
WALNUT CREEK, CA 94595
Nurse Practitioner (Family)
1210 ROSSMOOR PKWY
WALNUT CREEK, CA 94595

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 Javier Deleon's NPI number?

The NPI number for Javier Deleon is 1598833790. It was assigned to this individual provider in the NPPES registry on December 4, 2006.

Where is Javier Deleon located?

Javier Deleon practices at 1210 Rossmoor Pkwy, Walnut Creek, CA 94595. The listed phone number is (925) 933-1210.

What is Javier Deleon's specialty?

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

Is Javier Deleon enrolled in Medicare?

Yes. Javier Deleon 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.

When was this NPI record last updated?

The NPPES record for Javier Deleon was last updated on December 15, 2021. NPI Profile syncs with the weekly NPPES data releases published by CMS.