DR. NAOMI B CHEUNG MD
NPI 1073503314
Internal Medicine in Fountain Valley, CA

Active since October 27, 2005PECOS Enrolled
11420 WARNER AVE, FOUNTAIN VALLEY, CA 92708(714) 549-1300(714) 433-1300 Get Directions Write a Review

NPPES record last updated: December 8, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 8, 2021, Jan 9, 2020 (2 updates tracked since 2020).

About Dr. Naomi B Cheung Md NPPES

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

DR. NAOMI B CHEUNG MD (NPI 1073503314) is an individual internal medicine provider in Fountain Valley, California, licensed in California (A86263) and active in the NPI registry since October 2005. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1073503314
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. NAOMI B CHEUNGCredential: MD
Location Address11420 WARNER AVEFountain Valley, CA 92708-2529
Mailing Address17360 Brookhurst St, Attn: Network ManagementFountain Valley, CA 92708-3720 · (714) 377-2900
Fax(714) 433-1300
Sole ProprietorNo
Enumeration DateOctober 27, 2005
Last NPPES UpdateDecember 8, 20212 updates tracked since enumeration
NPPES CertifiedJanuary 9, 2020
✔ NPI 1073503314 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 · A86263
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.
11420 WARNER AVE, Fountain Valley, CA 92708

Other Identifiers 1

Medicaid00A862630CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Naomi B Cheung Md 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 Reassignments

2

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

Clinic/Center
17360 BROOKHURST ST
Fountain Valley, CA 92708
  • Reassigned Medicare billing, California enrollment
  • 948 clinicians in this Medicare group
Health Maintenance Organization
1893 W MALVERN AVE
Fullerton, CA 92833
  • Reassigned Medicare billing, California enrollment
  • 13,921 clinicians in this Medicare group

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 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.

Internal Medicine
11420 WARNER AVE
FOUNTAIN VALLEY, CA 92708
Physical Therapy Assistant
11420 WARNER AVE
FOUNTAIN VALLEY, CA 92708
Family Medicine
11420 WARNER AVE
FOUNTAIN VALLEY, CA 92708
Nurse Practitioner (Family)
11420 WARNER AVE
FOUNTAIN VALLEY, CA 92708
Nurse Practitioner (Family)
11420 WARNER AVE
FOUNTAIN VALLEY, CA 92708
Marriage & Family Therapist
11420 WARNER AVE
FOUNTAIN VALLEY, CA 92708
General Practice
11420 WARNER AVE
FOUNTAIN VALLEY, CA 92708
Internal Medicine
11420 WARNER AVE
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 Naomi Cheung's NPI number?

The NPI number for Naomi Cheung is 1073503314. It was assigned to this individual provider in the NPPES registry on October 27, 2005.

Where is Naomi Cheung located?

Naomi Cheung practices at 11420 Warner Ave, Fountain Valley, CA 92708. The listed phone number is (714) 549-1300.

What is Naomi Cheung's specialty?

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

Is Naomi Cheung enrolled in Medicare?

Yes. Naomi Cheung is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Naomi Cheung's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Naomi Cheung reassigns Medicare benefits to 2 organizations: Memorialcare Medical Foundation (Fountain Valley, CA) and Southern California Permanente Medical Group (Fullerton, 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 Naomi Cheung'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 Naomi Cheung was last updated on December 8, 2021. 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.