Justin Peng, MD

Primary specialty

Rheumatology PhysicianTaxonomy code 207RR0500X

License

MD037073 Issued in DC

Practice address

2021 K St NW
Suite 300
Washington, DC 20006-1003

Phone

(301) 942-7600

Fax

(202) 419-0418

NPI assigned

Jun 9, 2008

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in DC, MD2 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 2

Specialty

Rheumatology

Education

Boston University School of Medicine, 2005

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Arthritis and Rheumatism Associates PCGroup PAC ID 5597750703, 50 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Virginia Hospital Center Hospital, Arlington, VA, CCN 490050

Merit-based Incentive Payment System (MIPS)

Final score

85.72 of 100Reported as group

Quality

93.41

Promoting interoperability

100

Improvement activities

40

Cost

59

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://fhir.nextgen.com/nge/prod/fhir-api-r4/fhir/r4/
• Direct secure messaging: justin.peng.p1@direct.aramd.nextgenshare.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.

• Arthritis and Rheumatism Associates PC

  • Rheumatology Physician
  • Rockville, MD
  • NPI 1447259866

  DC

  Medicare reassignment Care Compare group NPD
• Frederick Health Hospital Inc

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

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

• Virginia Hospital Center Arlington Health System

  • General Acute Care Hospital
  • Arlington, VA
  • NPI 1790785996
  Care Compare affiliation

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

{
    "created_epoch": "1212969600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770249600000",
    "number": "1538328141",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "7361 CALHOUN PL STE 600",
            "city": "ROCKVILLE",
            "state": "MD",
            "postal_code": "208552788",
            "telephone_number": "301-942-7600",
            "fax_number": "301-942-3521"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2021 K ST NW",
            "address_2": "SUITE 300",
            "city": "WASHINGTON",
            "state": "DC",
            "postal_code": "200061003",
            "telephone_number": "301-942-7600",
            "fax_number": "202-419-0418"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "8270 Willow Oaks Corporate Dr Ste 150",
            "address_purpose": "LOCATION",
            "city": "Fairfax",
            "state": "VA",
            "postal_code": "220314530",
            "country_code": "US",
            "telephone_number": "301-942-7600",
            "fax_number": "703-573-7767",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "PENG",
        "first_name": "JUSTIN",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2008-06-09",
        "last_updated": "2026-02-05",
        "certification_date": "2026-02-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RR0500X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Rheumatology",
            "state": "VA",
            "license": "0101242489",
            "primary": false
        },
        {
            "code": "207RR0500X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Rheumatology",
            "state": "DC",
            "license": "MD037073",
            "primary": true
        },
        {
            "code": "207RR0500X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Rheumatology",
            "state": "MD",
            "license": "D0072143",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "justin.peng.p1@direct.aramd.nextgenshare.com",
            "affiliation": "N",
            "address_1": "2021 K St NW",
            "address_2": "Suite 300",
            "city": "Washington",
            "state": "DC",
            "country_code": "US",
            "postal_code": "200061003",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Traydacia Kiara Pendleton, CRNM, MSN
• David James Pendzick
• Allan W Peng, PA-C
• Augustine Peng, DDS
• Giselle Peng
• Shuhui Peng, LPC
• Tammy Peng, R.D.
• Xiaoqing Peng, MD, PHD
• Lauren Pengrin, D.O.
• Kiara Penn

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

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 5, 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.