LIGIA E. GIESE MD
NPI 1508944661
Obstetrics & Gynecology in Antioch, CA
About Ligia E. Giese Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LIGIA E. GIESE MD (NPI 1508944661) is an individual obstetrics & gynecology provider in Antioch, California, licensed in California (A75599) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS and is a graduate of University Of California, San Francisco School Of Medicine (1999).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
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
Ligia E. Giese Md 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 Reassignment
Medicare enrollment records show Ligia Giese reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Vallejo, CA 94589
- Reassigned Medicare billing, California enrollment
- 20,078 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 94509 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
ANTIOCH, CA 94509
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 Ligia Giese's NPI number?
The NPI number for Ligia Giese is 1508944661. It was assigned to this individual provider in the NPPES registry on November 2, 2006.
Where is Ligia Giese located?
Ligia Giese practices at 3400 Delta Fair Blvd, Antioch, CA 94509. The listed phone number is (925) 779-5000.
What is Ligia Giese's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Ligia Giese enrolled in Medicare?
Yes. Ligia Giese 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 organization bills Medicare for Ligia Giese's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ligia Giese reassigns Medicare benefits to Permanente Medical Group Inc (Vallejo, 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 Ligia Giese'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 Ligia Giese was last updated on December 20, 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.
# Ligia E. Giese, MD · NPI 1508944661
Obstetrics & Gynecology physician in Antioch, California. Individual provider, active in the CMS NPPES registry since November 2, 2006.
## Identity
- **NPI:** 1508944661 (Entity type: Individual)
- **Enumerated:** November 2, 2006
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** A75599 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 3400 DELTA FAIR BLVD, Antioch, CA 94509-4004
- **Phone:** (925) 779-5000
## 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:** Permanente Medical Group Inc (NPI 1336222397, Vallejo, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, San Francisco School Of Medicine, class of 1999
## Record status
- **NPPES last updated:** December 20, 2021
- **Other identifiers:** Medicaid 00A755990 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1508944661) · Data from the CMS NPPES public registry.