Abdullah Riar, M.D.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

D0034765 Issued in MD

Practice address

1299 Lamberton Dr
Silver Spring, MD 20902-3411

Phone

(301) 649-6100

Fax

(301) 649-1920

NPI assigned

Jun 2, 2006

Last updated

Jul 13, 2026By the provider in NPPES

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, 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

Internal MedicineAlso: Hospitalist

Education

Other, 1980

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Galen Inpatient Physicians PCGroup PAC ID 3678464633, 1,045 clinicians

Emergency Medicine Associates P.a., P.C.Group PAC ID 8022914522, 706 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Carroll Hospital Center Hospital, Westminster, MD, CCN 210033
• Holy Cross Germantown Hospital Hospital, Germantown, MD, CCN 210065
• Holy Cross Hospital Hospital, Silver Spring, MD, CCN 210004

Merit-based Incentive Payment System (MIPS)

Final score

72.91 of 100Reported as group

Quality

50.88

Improvement activities

40

Cost

69.9

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

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.

• Galen Inpatient Physicians PC

  • Hospitalist Physician
  • Germantown, MD
  • NPI 1225923154

  DC

  Medicare reassignment Care Compare group NPD
• Emergency Medicine Associates P.a., P.C.

  • Emergency Medicine Physician
  • Falls Church, VA
  • NPI 1134117393

  MD

  Medicare reassignment Care Compare group
• Medical Maryland Star Choice LLC

  • Internal Medicine Physician
  • Columbia, MD
  • NPI 1770190647
  Medicare reassignment NPD
• Usacs Integrated Acute Care Services of Maryland, LLC

  • Internal Medicine Physician
  • Elkton, MD
  • NPI 1922598929

  DC

  Medicare reassignment NPD
• Riar & Altschuler,MD, P.a.

  • Internal Medicine Physician
  • Silver Spring, MD
  • NPI 1598703670
  Authorized official Same address or phone
• Galen Inpatient Physicians PC

  • Hospitalist Physician
  • Silver Spring, MD
  • NPI 1417842345
  NPD
• Galen Inpatient Physicians PC

  • Hospitalist Physician
  • Los Angeles, CA
  • NPI 1205787686
  NPD
• Holy Cross Health, Inc

  dba Holy Cross Hospital

  • General Acute Care Hospital
  • Silver Spring, MD
  • NPI 1669417838
  NPD (past)

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

• Carroll Hospital Center, Inc.

  • General Acute Care Hospital
  • Westminster, MD
  • NPI 1912904210
  Care Compare affiliation
• Holy Cross Health, Inc

  dba Holy Cross Hospital

  • General Acute Care Hospital
  • Silver Spring, MD
  • NPI 1669417838
  Care Compare affiliation
• Holy Cross Health, Inc.

  dba Holy Cross Germantown Hospital

  • General Acute Care Hospital
  • Germantown, MD
  • NPI 1245655638
  Care Compare affiliation
• Holy Cross Health, Inc.

  dba Holy Cross Health Lab Outreach

  • Clinical Medical Laboratory
  • Silver Spring, MD
  • NPI 1831574284

  Hospital

  Care Compare affiliation

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

{
    "created_epoch": "1149206400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1588602593",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1299 LAMBERTON DR",
            "city": "SILVER SPRING",
            "state": "MD",
            "postal_code": "209023411",
            "telephone_number": "301-649-6100",
            "fax_number": "301-649-1920"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1299 LAMBERTON DR",
            "city": "SILVER SPRING",
            "state": "MD",
            "postal_code": "209023411",
            "telephone_number": "301-649-6100",
            "fax_number": "301-649-1920"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "RIAR",
        "first_name": "ABDULLAH",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-06-02",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MD",
            "license": "D0034765",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Rfom Nurse Practitioner Clinic, LLC (Affordable Healthcare Nurse Practitioner Clinic)
• Rhapsody Therapy LLC
• Jonathan Jong-Hwa Rhee, M.D.
• Marjoriann Rhule, AGNP, MSN, BSN
• Riar & Altschuler,MD, P.a.
• Ricardo L. Cook MD, P.a.
• Carol A Rice, PH.D.
• Ratasha Romelle Rice, RBT
• Sandra Rice, M.S.
• Brendan Rich, PH.D.

• Internal Medicine Physician in Silver Spring, MD
• Providers in Silver Spring, MD by specialty
• Internal Medicine Physician in Maryland

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.