GILLIAN GRAHAM SMITH M.D.
NPI 1639566680
Obstetrics & Gynecology in San Antonio, TX
About Gillian Graham Smith M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GILLIAN GRAHAM SMITH M.D. (NPI 1639566680) is an individual obstetrics & gynecology provider in San Antonio, Texas, licensed in Texas (R9622) and active in the NPI registry since April 2015. She is enrolled in Medicare PECOS, maintains a secondary practice location in San Antonio, and is a graduate of Texas Tech University Health Science Center School Of Medicine (2015).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
Accepted Insurance
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
Gillian Graham Smith 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 Gillian Smith reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Antonio, TX 78232
- Reassigned Medicare billing, Texas enrollment
- 67 clinicians in this Medicare group
Austin, TX 78758
- Reassigned Medicare billing, Texas enrollment
- Medicare enrollment name: Obhg Texas Holdings PA
- 998 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 2
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 78209 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 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN ANTONIO, TX 78209
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 Gillian Smith's NPI number?
The NPI number for Gillian Smith is 1639566680. It was assigned to this individual provider in the NPPES registry on April 16, 2015.
Where is Gillian Smith located?
Gillian Smith practices at 430 W Sunset Rd Ste 202, San Antonio, TX 78209. The listed phone number is (210) 653-5501.
What is Gillian Smith's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Gillian Smith enrolled in Medicare?
Yes. Gillian Smith 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 Gillian Smith's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gillian Smith reassigns Medicare benefits to 2 organizations: Synergy Healthcare Associates, PLLC (San Antonio, TX) and Obhg Texas Holdings, P.A. (Austin, TX). 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 Gillian Smith's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Gillian Smith accept?
Health plans from Blue Cross and Blue Shield of Texas and Imperial Insurance Companies, Inc. list Gillian Smith as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Gillian Smith was last updated on June 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months 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.
# Gillian Graham Smith, M.D. · NPI 1639566680
Obstetrics & Gynecology physician in San Antonio, Texas. Individual provider, active in the CMS NPPES registry since April 16, 2015.
## Identity
- **NPI:** 1639566680 (Entity type: Individual)
- **Enumerated:** April 16, 2015
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** R9622 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 430 W SUNSET RD STE 202, San Antonio, TX 78209-1772
- **Phone:** (210) 653-5501
## 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): Synergy Healthcare Associates, PLLC (NPI 1356584544, San Antonio, TX); Obhg Texas Holdings, P.A. (NPI 1083917769, Austin, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Texas Tech University Health Science Center School Of Medicine, class of 2015
## Record status
- **NPPES last updated:** June 24, 2025
- **Other identifiers:** Medicaid 392560404 (TX)
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Source: [NPI Profile](https://npiprofile.com/npi/1639566680) · Data from the CMS NPPES public registry.