Patrick Franklin Walker, M.D.

Primary specialty

Surgery PhysicianTaxonomy code 208600000X

License

D91256 Issued in MD

Practice address

8901 Rockville Pike
Bethesda, MD 20889-0001

Phone

(301) 295-4440

NPI assigned

Apr 17, 2014

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 MD, DC, VA3 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 3

Specialty

General Surgery

Education

Emory University School of Medicine, 2014

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Mary Washington Healthcare PhysiciansGroup PAC ID 2769546530, 286 clinicians

Medical Practices of Antietam, LLCGroup PAC ID 2567353865, 229 clinicians

Shock Trauma Associates PAGroup PAC ID 6800882317, 258 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• University of Maryland Medical Center Hospital, Baltimore, MD, CCN 210002
• Meritus Medical Center Hospital, Hagerstown, MD, CCN 210001

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: pwalker96397@marywashingtonhealthcare.direct-ci.com

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.

• Medical Practices of Antietam LLC

  • Clinic/Center
  • Hagerstown, MD
  • NPI 1710854963
  Medicare reassignment Care Compare group NPD
• Shock Trauma Associates, P.a.

  • Emergency Care Clinic/Center
  • Baltimore, MD
  • NPI 1679512909
  Medicare reassignment Care Compare group NPD
• Mary Washington Healthcare Physicians

  • Family Medicine Physician
  • Fredericksburg, VA
  • NPI 1295999852

  Surgery

  Medicare reassignment Care Compare group NPD
• Dimensions Healthcare Associates, Inc.

  • Anesthesiology Physician
  • Largo, MD
  • NPI 1346354834

  DC

  Medicare reassignment NPD
• Meritus Medical Center Inc

  • Nurse Practitioner
  • Hagerstown, MD
  • NPI 1205176393
  Medicare reassignment NPD
• Mary Washington Healthcare Providers LLC

  • Hospitalist Physician
  • Fredericksburg, VA
  • NPI 1750826277

  Surgery

  Medicare reassignment NPD
• Dimensions Health Associates Dba University of Maryland Capital Region

  • Internal Medicine Physician
  • Oxon Hill, MD
  • NPI 1407486293
  NPD
• Medical Practices of Antietam, LLC

  • General Practice Physician
  • Hagerstown, MD
  • NPI 1558430843
  NPD
• Meritus Medical Center Inc

  • Diagnostic Radiology Physician
  • Hagerstown, MD
  • NPI 1184477911
  NPD
• Meritus Medical Center Inc

  • Hospitalist Physician
  • Hagerstown, MD
  • NPI 1548559248
  NPD
• Mary Washington Healthcare Physicians

  • Durable Medical Equipment & Medical Supplies
  • Fredericksburg, VA
  • NPI 1740853035
  NPD
• Mary Washington Hospital Inc.

  • General Acute Care Hospital
  • Fredericksburg, VA
  • NPI 1942288527
  NPD (past)

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

• Meritus Medical Center Inc

  • General Acute Care Hospital
  • Hagerstown, MD
  • NPI 1942281266
  Care Compare affiliation
• University of Maryland Medical Center, LLC

  • General Acute Care Hospital
  • Baltimore, MD
  • NPI 1174660120
  Care Compare affiliation

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

{
    "created_epoch": "1397692800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757376000000",
    "number": "1124448162",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "8901 ROCKVILLE PIKE",
            "city": "BETHESDA",
            "state": "MD",
            "postal_code": "208890001"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "8901 ROCKVILLE PIKE",
            "city": "BETHESDA",
            "state": "MD",
            "postal_code": "208890001",
            "telephone_number": "301-295-4440"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "901 Harry S Truman Dr N",
            "address_purpose": "LOCATION",
            "city": "Upper Marlboro",
            "state": "MD",
            "postal_code": "207745477",
            "country_code": "US",
            "telephone_number": "240-677-3000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "22 S Greene St",
            "address_purpose": "LOCATION",
            "city": "Baltimore",
            "state": "MD",
            "postal_code": "212011544",
            "country_code": "US",
            "telephone_number": "410-328-6110",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WALKER",
        "first_name": "PATRICK",
        "middle_name": "FRANKLIN",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2014-04-17",
        "last_updated": "2025-09-09",
        "certification_date": "2025-09-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "MD",
            "license": "D91256",
            "primary": true
        },
        {
            "code": "2086S0127X",
            "taxonomy_group": "",
            "desc": "Surgery, Trauma Surgery",
            "state": "VA",
            "license": "1124448162",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Ian S Walker
• Jonathan Treat Walker, M.D.
• Katherine Ann Walker, M.D.
• Lauretta Walker, MPT, DPT
• Melissa S. Walker, ATR-BC, LPAT
• Princess Walker
• Susan Jennifer Walker, M.D.
• William Seay Walker III, D.M.D.
• Magdalena A Walkiewicz-Yvon, PH.D.
• Deborah Wallace

• Surgery Physician in Bethesda, MD
• Providers in Bethesda, MD by specialty
• Surgery Physician in Maryland

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 9, 2025; 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.