William R Grier, M.D

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

D91153 Issued in MD

Practice address

22 S Greene St
Room N3E09
Baltimore, MD 21201-1544

Phone

(410) 328-6110

NPI assigned

Mar 31, 2016

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 MD

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 1

Specialty

Critical Care (Intensivists)Also: Internal Medicine, Pulmonary Disease

Education

Drexel University College of Medicine, 2016

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

University of Maryland Physicians PAGroup PAC ID 2769394808, 395 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• University of Maryland Medical Center Hospital, Baltimore, MD, CCN 210002
• University of MD Medical Center Midtown Campus Hospital, Baltimore, MD, CCN 210038

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: wgrier470030@direct.umm.edu

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.

• University of Maryland Physicians P.a.

  • Cardiovascular Disease Physician
  • Baltimore, MD
  • NPI 1689623175
  Medicare reassignment Care Compare group NPD
• St Agnes Healthcare Inc

  • Internal Medicine Physician
  • Baltimore, MD
  • NPI 1144250176
  Medicare reassignment NPD
• University of Maryland Community Medical Group, Inc.

  • Family Medicine Physician
  • Baltimore, MD
  • NPI 1477530624
  Medicare reassignment NPD
• St Agnes Healthcare Inc

  • Diagnostic Radiology Physician
  • Baltimore, MD
  • NPI 1780615922
  NPD
• University of Maryland Community Medical Group, Inc.

  • Psychiatry Physician
  • La Plata, MD
  • NPI 1679393854
  NPD
• University of Maryland Physicians P.a.

  • Gastroenterology Physician
  • Largo, MD
  • NPI 1619860194
  NPD
• University of Maryland Physicians P.a.

  • Critical Care Medicine (Internal Medicine) Physician
  • Baltimore, MD
  • NPI 1760291413
  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.

• Maryland General Hospital Inc

  • General Acute Care Hospital
  • Baltimore, MD
  • NPI 1669565180
  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": "1459382400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1639958400000",
    "number": "1740643378",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "22 S GREENE ST",
            "address_2": "ROOM N3E09",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212011544"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "22 S GREENE ST",
            "address_2": "ROOM N3E09",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212011544",
            "telephone_number": "410-328-6110"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "301 Hospital Dr",
            "address_purpose": "LOCATION",
            "city": "Glen Burnie",
            "state": "MD",
            "postal_code": "210615803",
            "country_code": "US",
            "telephone_number": "410-787-4000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GRIER",
        "first_name": "WILLIAM",
        "middle_name": "R",
        "credential": "M.D",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2016-03-31",
        "last_updated": "2021-12-20",
        "certification_date": "2021-12-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MD",
            "license": "D91153",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Shahla Ahmad Grewal, MD
• Arthur John Gribensk II, MD
• Darius Grier
• Palmtama Little Grier, CFNP
• Sheritta N Grier
• Molly J. Griest, MMT, LPMT, MT-BC
• Shannon Rae Grieve, LCPC
• Aisha Griffin, MD
• Allison Rochelle Griffin, LCSW-C
• Anya M Griffin

• Internal Medicine Physician in Baltimore, MD
• Providers in Baltimore, 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 Dec 20, 2021; 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.