DR. SADAF SAMIZAY M.D.
NPI 1124439260
Obstetrics & Gynecology in San Ramon, CA
About Dr. Sadaf Samizay M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SADAF SAMIZAY M.D. (NPI 1124439260) is an individual obstetrics & gynecology provider in San Ramon, California, licensed in California (A149875) and active in the NPI registry since May 2014. She is enrolled in Medicare PECOS, maintains a secondary practice location in Modesto, and is a graduate of Other (2014).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 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
Dr. Sadaf Samizay 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
2Medicare enrollment records show Sadaf Samizay reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Leandro, CA 94578
- Reassigned Medicare billing, California enrollment
- 900 clinicians in this Medicare group
Manteca, CA 95336
- Reassigned Medicare billing, California enrollment
- 488 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 94583 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.
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.
SAN RAMON, CA 94583
SAN RAMON, CA 94583
SAN RAMON, CA 94583
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 Sadaf Samizay's NPI number?
The NPI number for Sadaf Samizay is 1124439260. It was assigned to this individual provider in the NPPES registry on May 12, 2014.
Where is Sadaf Samizay located?
Sadaf Samizay practices at 5601 Norris Canyon Rd, San Ramon, CA 94583. The listed phone number is (925) 587-4808.
What is Sadaf Samizay's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Sadaf Samizay enrolled in Medicare?
Yes. Sadaf Samizay 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 Sadaf Samizay's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sadaf Samizay reassigns Medicare benefits to 2 organizations: Alameda Health System (San Leandro, CA) and First Choice Physician Partners (Manteca, 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 Sadaf Samizay'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 Sadaf Samizay was last updated on February 20, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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. Sadaf Samizay, M.D. · NPI 1124439260
Obstetrics & Gynecology physician in San Ramon, California. Individual provider, active in the CMS NPPES registry since May 12, 2014.
## Identity
- **NPI:** 1124439260 (Entity type: Individual)
- **Enumerated:** May 12, 2014
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** A149875 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 5601 NORRIS CANYON RD, San Ramon, CA 94583-5407
- **Phone:** (925) 587-4808
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Alameda Health System (NPI 1558749440, San Leandro, CA); First Choice Physician Partners (NPI 1760724637, Manteca, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** February 20, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1124439260) · Data from the CMS NPPES public registry.