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SUNNY HILLS MEDICAL CENTER INC.
NPI 1750008017
Internal Medicine in Fullerton, CA

Active since October 26, 2022
140 E COMMONWEALTH AVE STE 100, FULLERTON, CA 92832(714) 572-3900(714) 572-4300 Get Directions Write a Review

NPPES record last updated: October 26, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Sunny Hills Medical Center Inc. NPPES

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

SUNNY HILLS MEDICAL CENTER INC. (NPI 1750008017), doing business as Sunny Hills Urgent Care, is a healthcare organization registered as an internal medicine in Fullerton, California and active in the NPI registry since October 2022. The organization lists Sandhya Gudapati, President, as its authorized official.

NPPES Registry Identity

NPI1750008017
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameSUNNY HILLS MEDICAL CENTER INC.
Location Address140 E COMMONWEALTH AVE STE 100Fullerton, CA 92832-1905
Mailing Address140 E Commonwealth Ave Ste 100Fullerton, CA 92832-1905 · (714) 572-3900 · Fax (714) 572-4300
Phone(714) 572-3900
Fax(714) 572-4300
Organization SubpartNo
Authorized OfficialSandhya GudapatiPresident · (714) 773-4111
Enumeration DateOctober 26, 2022
NPPES CertifiedOctober 21, 2022
✔ NPI 1750008017 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 6

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
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.
Also ListedFamily MedicineTaxonomy 207Q00000X
Also ListedGeneral PracticeTaxonomy 208D00000X
Also ListedClinic/Center · Multi-SpecialtyTaxonomy 261QM1300X
Also ListedClinic/Center · RadiologyTaxonomy 261QR0200X
Also ListedClinic/Center · Urgent CareTaxonomy 261QU0200X
140 E COMMONWEALTH AVE STE 100, Fullerton, CA 92832
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Other Names 1

Doing Business AsSunny Hills Urgent Care

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-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)

Sunny Hills Medical Center Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

6

Medicare enrollment records show 6 clinicians reassign Medicare billing to Sunny Hills Medical Center Inc., which bills Medicare for the services they deliver. Of these, 1 practice at this address and 2 within 10 miles. They are listed nearest first.

Clinicians, nearest first (6)

Lalitha Vakkalanka, M.D.
Internal Medicine
NPI 1194755959
140 E COMMONWEALTH AVE STE 100
Fullerton, CA 92832
(714) 773-4111
✔ PECOS✔ Accepts MedicareSame address
Hyesook Song, FNP
Nurse Practitioner
NPI 1740069483
140 EAST COMMONWEALTH AVE. SUITE 100
Fullerton, CA 92832
(714) 572-3900
✔ PECOS✔ Accepts Medicare0.2 mi
Eunsook Kim
Nurse Practitioner
NPI 1295464469
500 S VIRGIL AVE STE 200
Los Angeles, CA 90020
(213) 387-8000
✔ PECOS✔ Accepts Medicare25 mi
Faith Onwuka
Nurse Practitioner
NPI 1962976456
4618 FOUNTAIN AVE
Los Angeles, CA 90029
(323) 953-7170
✔ PECOS26 mi
Rajiv Choudhary, M.D., MPH
Hospitalist
NPI 1619230323
10800 MAGNOLIA AVE
Riverside, CA 92505
(951) 353-2000
✔ PECOS✔ Accepts Medicare26 mi
Ali Rafatnia
Family Practice
NPI 1346878717
1003 E BRIER DR
San Bernardino, CA 92408
(909) 382-7100
✔ PECOS✔ Accepts Medicare40 mi

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 Sunny Hills Medical Center Inc.'s NPI number?

The NPI number for Sunny Hills Medical Center Inc. is 1750008017. It was assigned to this organization in the NPPES registry on October 26, 2022. The provider is doing business as Sunny Hills Urgent Care.

Where is Sunny Hills Medical Center Inc. located?

Sunny Hills Medical Center Inc. is located at 140 E Commonwealth Ave Ste 100, Fullerton, CA 92832. The listed phone number is (714) 572-3900.

What is Sunny Hills Medical Center Inc.'s specialty?

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

Is Sunny Hills Medical Center Inc. enrolled in Medicare?

Yes. Sunny Hills Medical Center Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Sunny Hills Medical Center Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 6 clinicians in 4 Medicare specialties reassign their Medicare billing to Sunny Hills Medical Center 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. The largest specialties are Nurse Practitioner (3), Family Practice (1) and Hospitalist (1). Of these, 1 practice at this address and 2 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Sunny Hills Medical Center Inc. was last updated on October 26, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.