JASON JOSEPH GAJARSA M.D.
NPI 1427256577
Internal Medicine in Fountain Valley, CA

Active since July 10, 2007PECOS EnrolledAccepts Medicare Assignment
11180 WARNER AVE, SUITE #353, FOUNTAIN VALLEY, CA 92708(714) 751-3540 Get Directions Write a Review

NPPES record last updated: November 3, 2021. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Jason Joseph Gajarsa M.d. NPPES

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

JASON JOSEPH GAJARSA M.D. (NPI 1427256577) is an individual internal medicine provider in Fountain Valley, California, licensed in California (A99066) and active in the NPI registry since July 2007. He is enrolled in Medicare PECOS and is a graduate of Georgetown University School Of Medicine (2004).

NPPES Registry Identity

NPI1427256577
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameJASON JOSEPH GAJARSACredential: M.D.
Location Address11180 WARNER AVE, SUITE #353Fountain Valley, CA 92708-7501
Mailing Address11180 Warner Ave, Suite #353Fountain Valley, CA 92708-7501 · (714) 751-3540
Sole ProprietorYes
Medical School CMSGeorgetown University School Of MedicineGraduated 2004
Enumeration DateJuly 10, 2007
Last NPPES UpdateNovember 3, 2021
NPPES CertifiedNovember 3, 2021
NPI 1427256577 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 · A99066
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.

11180 WARNER AVE, Fountain Valley, CA 92708

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

Jason Joseph Gajarsa 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 ID2163568783
PECOS Enrollment IDI20091012000265
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.

Areas of Expertise CMS Part B claims

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.

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306
This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.
12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92708 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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 20

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

Allergy & Immunology (Allergy)
11180 WARNER AVE, SUITE 255
FOUNTAIN VALLEY, CA 92708
Psychiatry & Neurology (Neurology)
11180 WARNER AVE, #261
FOUNTAIN VALLEY, CA 92708
Obstetrics & Gynecology
11180 WARNER AVE, #455
FOUNTAIN VALLEY, CA 92708
Dentist
11180 WARNER AVE, #451
FOUNTAIN VALLEY, CA 92708
Pediatrics
11180 WARNER AVE, SUITE 169
FOUNTAIN VALLEY, CA 92708
Internal Medicine (Nephrology)
11180 WARNER AVE, 465
FOUNTAIN VALLEY, CA 92708
Family Medicine (Adult Medicine)
11180 WARNER AVE
FOUNTAIN VALLEY, CA 92708
Specialist
11180 WARNER AVE, STE 367
FOUNTAIN VALLEY, CA 92708

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 Jason Gajarsa's NPI number?

The NPI number for Jason Gajarsa is 1427256577. It was assigned to this individual provider in the NPPES registry on July 10, 2007.

Where is Jason Gajarsa located?

Jason Gajarsa practices at 11180 Warner Ave Suite #353, Fountain Valley, CA 92708. The listed phone number is (714) 751-3540.

What is Jason Gajarsa's specialty?

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

Is Jason Gajarsa enrolled in Medicare?

Yes. Jason Gajarsa 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 Jason Gajarsa was last updated on November 3, 2021. NPI Profile syncs with the weekly NPPES data releases published by CMS.