DR. ADRIAN ADONIOUS SIMIEN DO
NPI 1891224507
Obstetrics & Gynecology in San Antonio, TX
About Dr. Adrian Adonious Simien Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ADRIAN ADONIOUS SIMIEN DO (NPI 1891224507) is an individual obstetrics & gynecology provider in San Antonio, Texas, licensed in Texas (T0347) and active in the NPI registry since June 2017. He is enrolled in Medicare PECOS, maintains a secondary practice location in Indianapolis, and is a graduate of Other (2017).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 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
Dr. Adrian Adonious Simien Do 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
7Medicare enrollment records show Adrian Simien reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Antonio, TX 78251
- Reassigned Medicare billing, Texas enrollment
- 8 clinicians in this Medicare group
San Antonio, TX 78229
- Reassigned Medicare billing, Texas enrollment
- 64 clinicians in this Medicare group
San Antonio, TX 78232
- Reassigned Medicare billing, Texas enrollment
- 67 clinicians in this Medicare group
Spring Branch, TX 78070
- Reassigned Medicare billing, Texas enrollment
- 10 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
Bryan, TX 77802
- Reassigned Medicare billing, Texas enrollment
- 20 clinicians in this Medicare group
Abilene, TX 79601
- Reassigned Medicare billing, Texas enrollment
- 420 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 78251 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Adrian Simien's NPI number?
The NPI number for Adrian Simien is 1891224507. It was assigned to this individual provider in the NPPES registry on June 6, 2017.
Where is Adrian Simien located?
Adrian Simien practices at 11212 State Highway 151 # 351, San Antonio, TX 78251. The listed phone number is (210) 281-5066.
What is Adrian Simien's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Adrian Simien enrolled in Medicare?
Yes. Adrian Simien 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 Adrian Simien's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Adrian Simien reassigns Medicare benefits to 7 organizations: Alamo Women's Obstetrics & Gynecology, PLLC (San Antonio, TX), Lone Star Ob/Gyn Associates, P.A. (San Antonio, TX), Synergy Healthcare Associates, PLLC (San Antonio, TX), Mercy Wellness, PLLC (Spring Branch, TX), Obhg Texas Holdings, P.A. (Austin, TX) and 2 more organizations, listed in the Medicare section above. 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 Adrian Simien's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Adrian Simien accept?
Health plans from Baylor Scott and White Health Plan, Blue Cross and Blue Shield of Texas, CHRISTUS Health Plan and Community First list Adrian Simien 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 Adrian Simien was last updated on July 13, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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. Adrian Adonious Simien, DO · NPI 1891224507
Obstetrics & Gynecology physician in San Antonio, Texas. Individual provider, active in the CMS NPPES registry since June 6, 2017.
## Identity
- **NPI:** 1891224507 (Entity type: Individual)
- **Enumerated:** June 6, 2017
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** T0347 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 11212 STATE HIGHWAY 151 # 351, San Antonio, TX 78251-4498
- **Phone:** (210) 281-5066
## 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:** 7 organizations under Medicare reassignment (form CMS-855R): Alamo Women's Obstetrics & Gynecology, PLLC (NPI 1114462702, San Antonio, TX); Lone Star Ob/Gyn Associates, P.A. (NPI 1063441921, San Antonio, TX); Synergy Healthcare Associates, PLLC (NPI 1356584544, San Antonio, TX); Mercy Wellness, PLLC (NPI 1356856454, Spring Branch, TX); Obhg Texas Holdings, P.A. (NPI 1083917769, Austin, TX); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** July 13, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1891224507) · Data from the CMS NPPES public registry.