DR. CYNTHIA ARLENE CORK M.D.
NPI 1134229602
Obstetrics & Gynecology in Fountain Valley, CA
About Dr. Cynthia Arlene Cork M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CYNTHIA ARLENE CORK M.D. (NPI 1134229602) is an individual obstetrics & gynecology provider in Fountain Valley, California, licensed in California (G053015) and active in the NPI registry since September 2006. She is enrolled in Medicare PECOS and is a graduate of University Of California, Geffen School Of Medicine (1983).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Cynthia Arlene Cork 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.
Medicare Billing Reassignments
5Medicare enrollment records show Cynthia Cork reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Fountain Valley, CA 92708
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Cynthia A Cork MD Inc
Santa Ana, CA 92701
- Reassigned Medicare billing, California enrollment
- 255 clinicians in this Medicare group
Orange, CA 92868
- Reassigned Medicare billing, California enrollment
- 149 clinicians in this Medicare group
Long Beach, CA 90806
- Reassigned Medicare billing, California enrollment
- 191 clinicians in this Medicare group
Greenville, SC 29607
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Obhg California PC
- 711 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.
Areas of Expertise CMS Part B claims 12
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.
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.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Cynthia Cork's NPI number?
The NPI number for Cynthia Cork is 1134229602. It was assigned to this individual provider in the NPPES registry on September 25, 2006.
Where is Cynthia Cork located?
Cynthia Cork practices at 11180 Warner Avenue Suite 455, Fountain Valley, CA 92708. The listed phone number is (714) 556-0536.
What is Cynthia Cork's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Cynthia Cork enrolled in Medicare?
Yes. Cynthia Cork 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.
Which organizations bill Medicare for Cynthia Cork's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Cynthia Cork reassigns Medicare benefits to 5 organizations: Cynthia A. Cork, M.D., Inc. (Fountain Valley, CA), University Of California Irvine (Santa Ana, CA), Regents Of The University Of California (Orange, CA), Magella Medical Group, Inc. (Long Beach, CA) and Obhg California, P.C. (Greenville, SC). 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 Cynthia Cork'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 Cynthia Cork was last updated on March 14, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Dr. Cynthia Arlene Cork, M.D. · NPI 1134229602
Obstetrics & Gynecology physician in Fountain Valley, California. Individual provider, active in the CMS NPPES registry since September 25, 2006.
## Identity
- **NPI:** 1134229602 (Entity type: Individual)
- **Enumerated:** September 25, 2006
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** G053015 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 11180 WARNER AVENUE, SUITE 455, Fountain Valley, CA 92708
- **Phone:** (714) 556-0536 · **Fax:** (714) 435-9640
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 5 organizations under Medicare reassignment (form CMS-855R): Cynthia A. Cork, M.D., Inc. (NPI 1023266897, Fountain Valley, CA); University Of California Irvine (NPI 1851325906, Santa Ana, CA); Regents Of The University Of California (NPI 1356304034, Orange, CA); Magella Medical Group, Inc. (NPI 1376640086, Long Beach, CA); Obhg California, P.C. (NPI 1215258892, Greenville, SC) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, Geffen School Of Medicine, class of 1983
## Record status
- **NPPES last updated:** March 14, 2013
- **Other identifiers:** Medicare ID-Type Unspecified G53015 (CA); Medicare UPIN A93187 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1134229602) · Data from the CMS NPPES public registry.