DR. GRETCHEN CHRISTINE GAINOR M.D.
NPI 1174504757
Pediatrics in La Jolla, CA

Q: What is Gretchen Gainor's NPI number?

The NPI number for Gretchen Gainor is 1174504757. It was assigned to this individual provider in the NPPES registry on November 9, 2005. The provider is also known as Dr. Gretchen Christine Gainor M.D..

Q: What is Gretchen Gainor's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Q: When was this NPI record last updated?

The NPPES record for Gretchen Gainor was last updated on May 19, 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 November 09, 2005PECOS Enrolled

7300 GIRARD AVE, LA JOLLA, CA 92037(858) 459-4351(858) 459-4399 Get Directions Write a Review

NPPES record last updated: May 19, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 19, 2021, Mar 12, 2018 (2 updates tracked since 2018).

On this page

About Dr. Gretchen Christine Gainor M.d. NPPES

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

DR. GRETCHEN CHRISTINE GAINOR M.D. (NPI 1174504757) is an individual pediatrics provider in La Jolla, California, licensed in California (G79066) and active in the NPI registry since November 2005. She is enrolled in Medicare PECOS and maintains a secondary practice location in La Jolla.

NPPES Registry Identity

NPI1174504757

Entity TypeIndividualFemale

Primary Taxonomy208000000X

Provider Legal NameDR. GRETCHEN CHRISTINE GAINORCredential: M.D.

Location Address7300 GIRARD AVELa Jolla, CA 92037-5138

Mailing Address7300 Girard AveLa Jolla, CA 92037-5138 · (858) 459-4351 · Fax (858) 459-4399

Phone(858) 459-4351

Fax(858) 459-4399

Sole ProprietorNo

Enumeration DateNovember 9, 2005

Last NPPES UpdateMay 19, 20212 updates tracked since enumeration

NPPES CertifiedMay 19, 2021

✔ NPI 1174504757 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

License✔ Licensed in CA · G79066

Definition

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

7300 GIRARD AVE, La Jolla, CA 92037

Open in Google Maps ↗

Other Names 1

Former Name (1)Dr. Gretchen Christine Gainor M.d.

Secondary Practice Location 1

Location 15726 La Jolla Blvd, Suite 107La Jolla, CA 92037-7344 · Phone (858) 459-5437 · Fax (858) 459-5459

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Gretchen Christine Gainor M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignment

Medicare enrollment records show Gretchen Gainor reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Sharp Rees-Stealy Medical Group, Inc

6.1 mi

Internal Medicine

5651 COPLEY DR STE A
San Diego, CA 92111

Reassigned Medicare billing, California enrollment
1,233 clinicians in this Medicare group

NPI 1285616177 (858) 262-6666

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92037 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

$94.87 typical visit price

range $62.10 – $184.71

Typical copayment $23.71 (range $15.52 – $46.17)

Most-billed visit code 99203

Established Patient

$108.42 typical visit price

range $20.62 – $151.42

Typical copayment $27.10 (range $5.15 – $37.85)

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 12

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

DR. ANGELL C SHIEH MD, PHD

Pediatrics

7300 GIRARD AVE, SUITE 106
LA JOLLA, CA 92037

San Diego County (858) 459-4351

MARK RECHNIC MD

Orthopaedic Surgery (Hand Surgery)

7300 GIRARD AVE, STE 204
LA JOLLA, CA 92037

San Diego County (858) 587-9970

DR. BROOK L BROUHA MD/PHD

Dermatology (Dermatopathology)

7300 GIRARD AVE, SUITE 104
LA JOLLA, CA 92037

San Diego County (858) 750-2983

STUART CHARLES MARSHALL M.D.

Orthopaedic Surgery

7300 GIRARD AVE, 204
LA JOLLA, CA 92037

San Diego County (858) 459-3710

DR. GREY JAMES CUNNINGHAM D.D.S.

Dentist

7300 GIRARD AVE, #206
LA JOLLA, CA 92037

San Diego County (858) 454-4114

DR. VIVIAN V TUNG MD

Pediatrics

7300 GIRARD AVE, 106
LA JOLLA, CA 92037

San Diego County (858) 459-4351

MARSHALL ORTHOPEDICS INC

Orthopaedic Surgery

7300 GIRARD AVE, 204
LA JOLLA, CA 92037

San Diego County (858) 459-3710

TERESA DUDAREWICZ M.D.

Family Medicine

7300 GIRARD AVE
LA JOLLA, CA 92037

San Diego County (858) 729-0034

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 Gretchen Gainor's NPI number?

The NPI number for Gretchen Gainor is 1174504757. It was assigned to this individual provider in the NPPES registry on November 9, 2005. The provider is also known as Dr. Gretchen Christine Gainor M.D..

Where is Gretchen Gainor located?

Gretchen Gainor practices at 7300 Girard Ave, La Jolla, CA 92037. The listed phone number is (858) 459-4351.

What is Gretchen Gainor's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Gretchen Gainor enrolled in Medicare?

Yes. Gretchen Gainor is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Gretchen Gainor's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gretchen Gainor reassigns Medicare benefits to Sharp Rees-Stealy Medical Group, Inc (San Diego, CA). The 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 Gretchen Gainor'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 Gretchen Gainor was last updated on May 19, 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.