ALEXANDER SASAKI
NPI 1023704004
Hospitalist in San Antonio, TX
About Alexander Sasaki NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALEXANDER SASAKI (NPI 1023704004) is an individual hospitalist provider in San Antonio, Texas, licensed in Texas (W6376) and active in the NPI registry since April 2023. He is enrolled in Medicare PECOS, is affiliated with University Health System, and is a graduate of Creighton University School Of Medicine (2023).
NPPES Registry Identity
Specialties & Licenses 2
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
Alexander Sasaki 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 Alexander Sasaki reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Antonio, TX 78229
- Reassigned Medicare billing, Texas enrollment
- Medicare enrollment name: University Of Texas Health Science Center At San Antonio
- 2,397 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Health System
Acute Care Hospitals · San Antonio, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 78229 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.
SAN ANTONIO, TX 78229
SAN ANTONIO, TX 78229
SAN ANTONIO, TX 78229
SAN ANTONIO, TX 78229
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 Alexander Sasaki's NPI number?
The NPI number for Alexander Sasaki is 1023704004. It was assigned to this individual provider in the NPPES registry on April 13, 2023.
Where is Alexander Sasaki located?
Alexander Sasaki practices at 4502 Medical Dr, San Antonio, TX 78229. The listed phone number is (210) 358-4000.
What is Alexander Sasaki's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Alexander Sasaki enrolled in Medicare?
Yes. Alexander Sasaki 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 Alexander Sasaki's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alexander Sasaki reassigns Medicare benefits to Uthscsa Dental School (San Antonio, TX). 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 Alexander Sasaki's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Alexander Sasaki accept?
Health plans from Blue Cross and Blue Shield of Texas and Community First list Alexander Sasaki 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.
Is Alexander Sasaki affiliated with any hospitals?
According to CMS data, Alexander Sasaki is affiliated with University Health System.
When was this NPI record last updated?
The NPPES record for Alexander Sasaki was last updated on May 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Alexander Sasaki · NPI 1023704004
Hospitalist physician in San Antonio, Texas. Individual provider, active in the CMS NPPES registry since April 13, 2023.
## Identity
- **NPI:** 1023704004 (Entity type: Individual)
- **Enumerated:** April 13, 2023
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** W6376 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 4502 MEDICAL DR, San Antonio, TX 78229-4402
- **Phone:** (210) 358-4000
## 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:** Uthscsa Dental School (NPI 1750403887, San Antonio, TX), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Creighton University School Of Medicine, class of 2023
## Record status
- **NPPES last updated:** May 20, 2026
---
Source: [NPI Profile](https://npiprofile.com/npi/1023704004) · Data from the CMS NPPES public registry.