Peter Maag Williams, M.D.

Primary specialty

Diagnostic Radiology PhysicianTaxonomy code 2085R0202X

License

MD448897 Issued in PA

Practice address

1100 Wilford Hall Loop, BLDG 4554
59MDW/SGHC
Jbsa - Lackland, TX 78236

Phone

(210) 292-5256

NPI assigned

Sep 1, 2006

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in NV, TX, NY, MI, WI, WA, IL7 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 7

Specialty

Diagnostic Radiology

Education

Uniformed Services Uhs Fe Hebert School of Med, 2004

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Good Samaritan Regional Health CenterGroup PAC ID 1658272059, 155 clinicians

Premier Radiology Wisconsin LLCGroup PAC ID 9537595533, 111 clinicians

Empire State Radiology P CGroup PAC ID 4385075241, 266 clinicians

West Florida Radiology Associates PAGroup PAC ID 0941224612, 33 clinicians

Imaging Associates of Indiana PCGroup PAC ID 1254503345, 293 clinicians

Specialists in Medical Imaging SCGroup PAC ID 2163733544, 228 clinicians

Northside Radiology Associates LLCGroup PAC ID 4486555398, 381 clinicians

St Marys Hospital Centralia IllinoisGroup PAC ID 6709788920, 118 clinicians

Multicare Health SystemGroup PAC ID 7719899897, 2,312 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• North Okaloosa Medical Center Hospital, Crestview, FL, CCN 100122
• HCA Florida Twin Cities Hospital Hospital, Niceville, FL, CCN 100054
• Santa Rosa Medical Center Hospital, Milton, FL, CCN 100124
• HCA Florida Fort Walton-Destin Hospital Hospital, Fort Walton Beach, FL, CCN 100223
• Good Samaritan Regional HLTH Center Hospital, Mount Vernon, IL, CCN 140046

Merit-based Incentive Payment System (MIPS)

Final score

100 of 100Reported as group

Quality

100

Improvement activities

40

Merit-based Incentive Payment System (MIPS)

Final score

78.06 of 100Reported as group

Quality

72.79

Improvement activities

40

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations (25 of 50)

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Empire State Radiology P C

  • Diagnostic Radiology Physician
  • West Islip, NY
  • NPI 1255962783

  TX

  Medicare reassignment Care Compare group NPD
• Imaging Associates of Indiana, PC

  • Diagnostic Radiology Physician
  • Indianapolis, IN
  • NPI 1699072611

  TX

  Medicare reassignment Care Compare group NPD
• Multicare Health System

  dba Multicare Neurological Surgery

  • Neurological Surgery Physician
  • Tacoma, WA
  • NPI 1497766638
  Medicare reassignment Care Compare group NPD
• Northside Radiology Associates LLC

  • Diagnostic Radiology Physician
  • Atlanta, GA
  • NPI 1013960657

  TX

  Medicare reassignment Care Compare group NPD
• Premier Radiology Wisconsin, LLC

  • Diagnostic Radiology Physician
  • Mount Pleasant, WI
  • NPI 1952951154
  Medicare reassignment Care Compare group NPD
• Specialists in Medical Imaging SC

  • Diagnostic Radiology Physician
  • Olympia Fields, IL
  • NPI 1841687951

  TX

  Medicare reassignment Care Compare group NPD
• St. Mary's Hospital, Centralia, Illinois

  dba SSM Health St. Mary's Hospital - Centralia

  • Emergency Medicine Physician
  • Centralia, IL
  • NPI 1770687196

  Diagnostic Radiology

  Medicare reassignment Care Compare group NPD
• West Florida Radiology Associates PA

  • Diagnostic Radiology Physician
  • Milton, FL
  • NPI 1396724654

  TX

  Medicare reassignment Care Compare group NPD
• Good Samaritan Regional Health Center

  dba SSM Health Good Samaritan Hospital - Mt. Vernon

  • Emergency Medicine Physician
  • Mount Vernon, IL
  • NPI 1487758801
  Medicare reassignment Care Compare group
• Singleton Associates PA

  • Diagnostic Radiology Physician
  • Shenandoah, TX
  • NPI 1538107875
  Medicare reassignment NPD
• Coastal Radiology Associates, PLLC

  • Diagnostic Radiology Physician
  • New Bern, NC
  • NPI 1144270307

  TX

  Medicare reassignment NPD
• County of Clay

  dba Clay County Hospital

  • Critical Access Hospital
  • Flora, IL
  • NPI 1184655136
  Medicare reassignment NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Crestview Hospital Company, LLC

  dba North Okaloosa Medical Center

  • General Acute Care Hospital
  • Crestview, FL
  • NPI 1104897859
  Care Compare affiliation
• Fort Walton Beach Medical Center, Inc.

  dba HCA Florida Fort Walton-Destin Hospital

  • General Acute Care Hospital
  • Fort Walton Beach, FL
  • NPI 1639128820
  Care Compare affiliation
• Good Samaritan Regional Health Center

  dba SSM Health Good Samaritan Hospital - Mt. Vernon

  • General Acute Care Hospital
  • Mount Vernon, IL
  • NPI 1609897339
  Care Compare affiliation
• Hma Santa Rosa Medical Center LLC

  dba Santa Rosa Medical Center

  • General Acute Care Hospital
  • Milton, FL
  • NPI 1528015302
  Care Compare affiliation
• Okaloosa Hospital Inc

  dba HCA Florida Twin Cities Hospital

  • General Acute Care Hospital
  • Niceville, FL
  • NPI 1891732988
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1157068800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1772064000000",
    "number": "1093827214",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "300 E BASSE RD APT 1403",
            "city": "SAN ANTONIO",
            "state": "TX",
            "postal_code": "782098388"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1100 WILFORD HALL LOOP, BLDG 4554",
            "address_2": "59MDW/SGHC",
            "city": "JBSA - LACKLAND",
            "state": "TX",
            "postal_code": "78236",
            "telephone_number": "210-292-5256"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "PETER",
        "middle_name": "MAAG",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-09-01",
        "last_updated": "2026-02-26",
        "certification_date": "2026-02-26",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "IL",
            "license": "036172839",
            "primary": false
        },
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "PA",
            "license": "MD448897",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Wilford Hall Ambulatory Surgical Center
• Bryan Arthur Williams, DDS
• Catherine Sue Williams, DPM
• Matthew Talbot Williams, D.C.
• Miranda Williams, NP
• Sarah Desiree Windsor
• Ilaina Michelle Wingler, PSY.D.
• Erin Winkler, MD
• Jeffrey L Wisneski, AU.D
• Wendi Wohltmann, M.D.

• Diagnostic Radiology Physician in Jbsa Lackland, TX
• Providers in Jbsa Lackland, TX by specialty
• Diagnostic Radiology Physician in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 26, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.