Ruth D Macquarrie, M.D.

Primary specialty

Anesthesiology PhysicianTaxonomy code 207L00000X

License

A80909 Issued in CA

Practice address

30 Lucky Dr
Greenbrae, CA 94904-2407

Phone

(415) 309-9605

Fax

(415) 728-9685

NPI assigned

Mar 15, 2007

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

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

Anesthesiology

Education

Johns Hopkins University School of Medicine, 1998

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Empire Anesthesia IncGroup PAC ID 8224197108, 21 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Not enrolled

HHS exclusion list flag

CMS’s directory marks this NPI as on an HHS exclusion list; no matching OIG record was found. The OIG exclusions file (LEIE) holds no record for this NPI, and the directory does not say which list the flag comes from. How exclusions are shown Confirm with the OIG exclusions search.

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.

• Empire Anesthesia Inc

  • Anesthesiology Physician
  • San Ramon, CA
  • NPI 1174792261
  Medicare reassignment Care Compare group NPD
• Pontine Incorporated

  • Anesthesiology Physician
  • San Ramon, CA
  • NPI 1053757609
  Medicare reassignment NPD

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

{
    "created_epoch": "1173916800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771545600000",
    "number": "1942334362",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 612",
            "city": "CORTE MADERA",
            "state": "CA",
            "postal_code": "949760612",
            "telephone_number": "415-309-9605",
            "fax_number": "415-728-9685"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "30 LUCKY DR",
            "city": "GREENBRAE",
            "state": "CA",
            "postal_code": "949042407",
            "telephone_number": "415-309-9605",
            "fax_number": "415-728-9685"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MACQUARRIE",
        "first_name": "RUTH",
        "middle_name": "D",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2007-03-15",
        "last_updated": "2026-02-20",
        "certification_date": "2026-02-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207LC0200X",
            "taxonomy_group": "",
            "desc": "Anesthesiology, Critical Care Medicine",
            "state": "CA",
            "license": "A80909",
            "primary": false
        },
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "CA",
            "license": "A80909",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Kathleen Lustman Hirsch, C.A., LICAC
• Natalya Lvoff, M.D.
• Nancy Ma
• John Maa, MD
• Gordon S Macdonald, DDS
• John L. Maddox, MD
• Rina Madrinan, RN
• Nazanin Mahdieh
• Katherine Taraban Mahoney, PT, DPT
• Kate Malasig, PHARMD

• Anesthesiology Physician in Greenbrae, CA
• Providers in Greenbrae, CA by specialty
• Anesthesiology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 20, 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.