Peter Maag Williams, M.D.
Diagnostic Radiology (CMS) · Jbsa - Lackland, TX
At a glance
1100 Wilford Hall Loop, Bldg 4554, Jbsa - Lackland, TX 78236
NPPES record updated Feb 26, 2026. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
1100 Wilford Hall Loop, Bldg 4554 59Mdw/SghcJbsa - Lackland, TX 78236
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 2004
- CMS specialties
- Diagnostic Radiology
Practice groups
- Empire State Radiology P C
- Good Samaritan Regional Health Center
- Imaging Associates Of Indiana Pc
- Multicare Health System
- Northside Radiology Associates Llc
- Specialists In Medical Imaging Sc
- St Marys Hospital Centralia Illinois
- West Florida Radiology Associates Pa
Reported hospital affiliations
- Capital Medical Center Olympia, WA
- Hca Florida Fort Walton-Destin Hospital Fort Walton Beach, FL
- Hca Florida Twin Cities Hospital Niceville, FL
- North Okaloosa Medical Center Crestview, FL
- Santa Rosa Medical Center Milton, FL
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
No matching general-payment summary in the imported release. This is not a verified zero and does not rule out other payment types or years.
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Diagnostic Radiology (CMS)
- Taxonomy code
- 2085R0202X
- Enumeration date
- Sep 1, 2006
- Record updated
- Feb 26, 2026
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- M.D.
Reported taxonomies and licenses
2085R0202X
License reported: 036172839 IL
2085R0202X · Primary
License reported: MD448897 PA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
1100 Wilford Hall Loop, Bldg 455459Mdw/Sghc
Jbsa - Lackland, TX 78236
- Phone
- (210) 292-5256
Mailing address
300 E BASSE RD APT 1403SAN ANTONIO, TX 782098388
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
Report a directory issue