ADDIE VALERIE AMPER DO
NPI 1821679903
Hospitalist in San Antonio, TX
About Addie Valerie Amper Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ADDIE VALERIE AMPER DO (NPI 1821679903) is an individual hospitalist provider in San Antonio, Texas, licensed in Texas (U6913) and active in the NPI registry since April 2021. She is enrolled in Medicare PECOS, is affiliated with St James Healthcare, and maintains a secondary practice location in Mission.
NPPES Registry Identity
Specialties & Licenses 2
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
Addie Valerie Amper 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 Addie Amper 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 78228
- Reassigned Medicare billing, Texas enrollment
- 762 clinicians in this Medicare group
San Antonio, TX 78207
- Reassigned Medicare billing, Texas enrollment
- 1,129 clinicians in this Medicare group
Angleton, TX 77515
- Reassigned Medicare billing, Texas enrollment
- 37 clinicians in this Medicare group
Humble, TX 77338
- Reassigned Medicare billing, Texas enrollment
- 2,009 clinicians in this Medicare group
Dallas, TX 75230
- Reassigned Medicare billing, Texas enrollment
- 486 clinicians in this Medicare group
Lubbock, TX 79401
- Reassigned Medicare billing, Texas enrollment
- 1,338 clinicians in this Medicare group
Boulder, MT 59632
- Reassigned Medicare billing, Montana enrollment
- 278 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 4
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.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St James Healthcare
Acute Care Hospitals · Butte, MTUniversity Of Texas Medical Branch Galveston
Acute Care Hospitals · Galveston, TXUniversity 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 Addie Amper's NPI number?
The NPI number for Addie Amper is 1821679903. It was assigned to this individual provider in the NPPES registry on April 20, 2021.
Where is Addie Amper located?
Addie Amper practices at 4502 Medical Dr, San Antonio, TX 78229. The listed phone number is (210) 358-4000.
What is Addie Amper's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Addie Amper enrolled in Medicare?
Yes. Addie Amper 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 Addie Amper's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Addie Amper reassigns Medicare benefits to 7 organizations: Wellmed Medical Group, PA (San Antonio, TX), Community Medicine Associates (San Antonio, TX), Velasco Inpatient Services PLLC (Angleton, TX), Hospitalist Medicine Physicians Of Texas, PLLC (Humble, TX), Questcare Hospitalists PLLC (Dallas, 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 Addie Amper's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Addie Amper accept?
Health plans from Baylor Scott and White Health Plan, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Texas, Community First and Imperial Insurance Companies, Inc. and 4 other insurers list Addie Amper 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 Addie Amper affiliated with any hospitals?
According to CMS data, Addie Amper is affiliated with St James Healthcare, University Of Texas Medical Branch Galveston and University Health System.
When was this NPI record last updated?
The NPPES record for Addie Amper was last updated on September 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 44 days 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.
# Addie Valerie Amper, DO · NPI 1821679903
Hospitalist physician in San Antonio, Texas. Individual provider, active in the CMS NPPES registry since April 20, 2021.
## Identity
- **NPI:** 1821679903 (Entity type: Individual)
- **Enumerated:** April 20, 2021
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** U6913 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 4502 MEDICAL DR, San Antonio, TX 78229-4402
- **Phone:** (210) 358-4000 · **Fax:** (210) 358-8002
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** 7 organizations under Medicare reassignment (form CMS-855R): Wellmed Medical Group, PA (NPI 1437156486, San Antonio, TX); Community Medicine Associates (NPI 1245313329, San Antonio, TX); Velasco Inpatient Services PLLC (NPI 1811295512, Angleton, TX); Hospitalist Medicine Physicians Of Texas, PLLC (NPI 1629307095, Humble, TX); Questcare Hospitalists PLLC (NPI 1265441620, Dallas, TX); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Liberty Univ College Of Osteopathic Medicine, class of 2021
## Record status
- **NPPES last updated:** September 23, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1821679903) · Data from the CMS NPPES public registry.