Joseph Michael Bytnar, PA-C

Primary specialty

Surgical Physician AssistantTaxonomy code 363AS0400X

Practice address

3800 Reservoir Rd NW
Washington, DC 20007-2113

Phone

(202) 444-4972

NPI assigned

Jan 25, 2024

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in DC

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Physician Assistant

Education

Other, 2025

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Medstar Medical Group II LLCGroup PAC ID 0547413825, 3,726 clinicians

Suburban/NRH Medical Rehabilitation IncGroup PAC ID 6507846771, 885 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Medstar Georgetown University Hospital Hospital, Washington, DC, CCN 090004
• Medstar Washington Hospital Center Hospital, Washington, DC, CCN 090011

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

Practice roles

Locations

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

• Medstar Medical Group II LLC

  • General Practice Physician
  • Baltimore, MD
  • NPI 1184046187

  DC

  Medicare reassignment Care Compare group NPD
• Suburban/NRH Medical Rehabilitation Inc

  dba NRH Rehabilitation Network at Bethesda

  • Rehabilitation Clinic/Center
  • Bethesda, MD
  • NPI 1457354748
  Care Compare group
• Medstar Medical Group II LLC

  • Hospitalist Physician
  • Washington, DC
  • NPI 1770198301
  NPD
• Medstar Medical Group II LLC

  • Internal Medicine Physician
  • Washington, DC
  • NPI 1376887844
  NPD (past)
• Frederick Health Hospital Inc

  dba Frederick Health Hospital

  • General Acute Care Hospital
  • Frederick, MD
  • NPI 1538165527
  NPD (past)

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

• Medstar - Georgetown Medical Center, Inc.

  dba Georgetown University Hospital

  • General Acute Care Hospital
  • Washington, DC
  • NPI 1427145176
  Care Compare affiliation
• Washington Hospital Center Corporation

  • General Acute Care Hospital
  • Washington, DC
  • NPI 1548378235
  Care Compare affiliation

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

{
    "created_epoch": "1706140800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1749427200000",
    "number": "1255193249",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3800 RESERVOIR RD NW",
            "city": "WASHINGTON",
            "state": "DC",
            "postal_code": "200072113",
            "telephone_number": "202-444-4972"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3800 RESERVOIR RD NW",
            "city": "WASHINGTON",
            "state": "DC",
            "postal_code": "200072113",
            "telephone_number": "202-444-4972"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BYTNAR",
        "first_name": "JOSEPH",
        "middle_name": "MICHAEL",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2024-01-25",
        "last_updated": "2025-06-09",
        "certification_date": "2025-06-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363AS0400X",
            "taxonomy_group": "",
            "desc": "Physician Assistant, Surgical",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Deirdre Mary Byrne, M.D.
• Hannah Byrne, RD
• Margaret Byrne, M.D.
• Anne Byrnes
• Natalie Byrnes, OT
• C & D Transportation
• C & G Transportation LLC
• C Jonez Nutrition Consulting Services LLC (Food Jonezi)
• C L Kauffman MD PLLC
• C L Kauffman MD PLLC (Georgetown Dermpath)

• Surgical Physician Assistant in Washington, DC
• Providers in Washington, DC by specialty
• Surgical Physician Assistant in District of Columbia

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