Alan H Ost, MD

Primary specialty

Diagnostic Radiology PhysicianTaxonomy code 2085R0202X

License

MD20645 Issued in DC

Practice address

110 Irving St NW
Washington, DC 20010-2976

Phone

(202) 877-6429

Fax

(202) 877-8626

NPI assigned

Oct 25, 2005

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

Diagnostic Radiology

Education

Virginia Commonwealth University, School of Medicine, 1987

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

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

Practice addresses (Care Compare)

Hospital & facility affiliations

• Medstar Saint Mary'S Hospital Hospital, Leonardtown, MD, CCN 210028

Merit-based Incentive Payment System (MIPS)

Final score

82.34 of 100Reported as group

Quality

67.9

Promoting interoperability

100

Improvement activities

40

Cost

69.47

Merit-based Incentive Payment System (MIPS)

Final score

81.41 of 100Reported as group

Quality

61.45

Promoting interoperability

96

Improvement activities

40

Cost

79.91

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

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 and National Provider Directory roles.

• Medstar Medical Group II LLC

  • General Practice Physician
  • Baltimore, MD
  • NPI 1184046187

  DC

  Medicare reassignment Care Compare group NPD
• Medstar Medical Group Radiology, LLC

  • Diagnostic Radiology Physician
  • Washington, DC
  • NPI 1326450156

  MD

  Medicare reassignment NPD
• Medstar Medical Group - Southern Maryland LLC

  • Internal Medicine Physician
  • Hollywood, MD
  • NPI 1831592211
  Medicare reassignment NPD
• Physician Imaging of Washington Hospital Center LLC

  • Radiology Clinic/Center
  • Chevy Chase, MD
  • NPI 1831385871

  DC, Diagnostic Radiology

  Medicare reassignment NPD
• Medstar Medical Group II LLC

  • Internal Medicine Physician
  • Washington, DC
  • NPI 1376887844
  NPD
• Medstar Medical Group - Southern Maryland LLC

  • Ambulatory Surgical Clinic/Center
  • Waldorf, MD
  • NPI 1730571118
  NPD
• Physician Imaging of Washington Hospital Center LLC

  • Radiology Clinic/Center
  • Rockville, MD
  • NPI 1326648346

  Diagnostic Radiology

  NPD
• Physician Imaging of Washington Hospital Center, LLC

  • Radiology Clinic/Center
  • Bel Air, MD
  • NPI 1700246022

  Diagnostic Radiology

  NPD

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

• St Marys Hospital of St Marys County Inc

  • General Acute Care Hospital
  • Leonardtown, MD
  • NPI 1780650473
  Care Compare affiliation

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

{
    "created_epoch": "1130198400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1144210758",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1201 SEVEN LOCKS RD",
            "address_2": "SUITE 200",
            "city": "ROCKVILLE",
            "state": "MD",
            "postal_code": "208542931",
            "telephone_number": "301-652-5771",
            "fax_number": "301-652-6332"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "110 IRVING ST NW",
            "city": "WASHINGTON",
            "state": "DC",
            "postal_code": "200102976",
            "telephone_number": "202-877-6429",
            "fax_number": "202-877-8626"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "OST",
        "first_name": "ALAN",
        "middle_name": "H",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-10-25",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "DC",
            "license": "MD20645",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Tiffany Osorio
• Valentina Osorio, OTD, OTR/L
• Fnu Osortoh Atem Agbor
• Titilola Oluwakemi Ososanwo
• Amir Taymour Ossivand, PHARMD
• Alexander Franz Oster
• Charles Nelson Oster, MD
• Karen J Osterle, MSSA, LICSW
• Meredith Osterman
• Karen Ostlie, LICSW

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

• 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.