Sidney H Allison, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

MD60476243 Issued in WA

Practice address

747 Broadway
Seattle, WA 98122-4379

Phone

(206) 215-2520

Fax

(206) 386-3180

NPI assigned

May 18, 2012

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in CA, TX, WA3 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 3

Specialty

Internal Medicine

Education

Other, 2012

Medicare assignment

May accept Medicare assignment

Group practices

University of California SFGH Medical GroupGroup PAC ID 5496668410, 566 clinicians

American Specialty Physicians Group IncGroup PAC ID 6103198460, 99 clinicians

Valley Medical Group-RentonGroup PAC ID 4183753965, 419 clinicians

Swedish Health ServicesGroup PAC ID 0244138196, 1,038 clinicians

San Francisco Unified Physicians Group, IncGroup PAC ID 8426310004, 18 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Swedish Medical Center Hospital, Seattle, WA, CCN 500027
• Swedish Medical Center / Cherry Hill Hospital, Seattle, WA, CCN 500025
• Swedish Issaquah Hospital, Issaquah, WA, CCN 500152
• Valley Medical Center Hospital, Renton, WA, CCN 500088
• Zuckerberg San Francisco General Hosp & Trauma Ctr Hospital, San Francisco, CA, CCN 050228
• Kentfield Hospital Long-term care hospital, Kentfield, CA, CCN 052043

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations (25 of 49)

Interoperability endpoints

• Direct secure messaging: sallison126051@direct.valleymed.org
• Direct secure messaging: sallison1@direct.iuhealth.org

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.

• Swedish Health Services

  • Internal Medicine Physician
  • Seattle, WA
  • NPI 1689612954
  Medicare reassignment Care Compare group NPD
• Valley Medical Group-Renton

  • General Acute Care Hospital
  • Renton, WA
  • NPI 1619209574

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• American Specialty Physicians Group Inc

  • Emergency Medicine Physician
  • Modesto, CA
  • NPI 1568992923

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• University of California SFGH Medical Group

  • Otolaryngology Physician
  • San Francisco, CA
  • NPI 1154396208
  Medicare reassignment Care Compare group NPD
• San Francisco Unified Physicians Group, Inc.

  • Hospitalist Physician
  • San Francisco, CA
  • NPI 1982104162
  Medicare reassignment Care Compare group
• City & County of San Francisco

  • Clinical Medical Laboratory
  • San Francisco, CA
  • NPI 1982737524
  Medicare reassignment NPD
• County of San Mateo

  • Multi-Specialty Clinic/Center
  • San Mateo, CA
  • NPI 1831268580
  Medicare reassignment NPD
• Galen Inpatient Physicians, PC

  • Hospitalist Physician
  • Manteca, CA
  • NPI 1689320459
  Medicare reassignment NPD
• Ipc Healthcare Services of Texas, PLLC

  • Hospitalist Physician
  • San Antonio, TX
  • NPI 1023403011

  Internal Medicine

  Medicare reassignment NPD
• Lonestar Hospital Medicine Associates, PA

  • Hospitalist Physician
  • Mansfield, TX
  • NPI 1518237429

  Internal Medicine

  Medicare reassignment NPD
• Permanente Medical Group Inc

  • Internal Medicine Physician
  • Santa Clara, CA
  • NPI 1073606299

  Anesthesiology

  Medicare reassignment NPD
• Regents of the University of California

  • Internal Medicine Physician
  • San Francisco, CA
  • NPI 1760552343
  Medicare reassignment NPD

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

• Public Hospital District 1 of King County

  • General Acute Care Hospital
  • Renton, WA
  • NPI 1649209230
  Care Compare affiliation
• Swedish Health Services

  • General Acute Care Hospital
  • Seattle, WA
  • NPI 1306992151
  Care Compare affiliation
• Swedish Health Services

  • General Acute Care Hospital
  • Seattle, WA
  • NPI 1356496582
  Care Compare affiliation
• Swedish Health Services

  • General Acute Care Hospital
  • Issaquah, WA
  • NPI 1851686059
  Care Compare affiliation
• Valley Medical Group-Renton

  • General Acute Care Hospital
  • Renton, WA
  • NPI 1619209574
  Care Compare affiliation
• City & County of San Francisco

  • General Acute Care Hospital
  • San Francisco, CA
  • NPI 1083648810
  Care Compare affiliation
• City & County of San Francisco

  • General Acute Care Hospital
  • San Francisco, CA
  • NPI 1164609962
  Care Compare affiliation
• Kentfield and San Francisco Specialty Hospital Inc

  • Long Term Care Hospital
  • San Francisco, CA
  • NPI 1619758539

  Long-term care hospital

  Care Compare affiliation
• Kentfield and San Francisco Specialty Hospital Inc

  • Long Term Care Hospital
  • Kentfield, CA
  • NPI 1841071776

  Long-term care hospital

  Care Compare affiliation

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

{
    "created_epoch": "1337299200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770681600000",
    "number": "1275893752",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 25608",
            "city": "SALT LAKE CITY",
            "state": "UT",
            "postal_code": "841250608",
            "telephone_number": "206-320-4476"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "747 BROADWAY",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981224379",
            "telephone_number": "206-215-2520",
            "fax_number": "206-386-3180"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ALLISON",
        "first_name": "SIDNEY",
        "middle_name": "H",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2012-05-18",
        "last_updated": "2026-02-10",
        "certification_date": "2026-02-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "WA",
            "license": "MD60476243",
            "primary": true
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "WA",
            "license": "MD60476243",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "2029080",
            "state": "WA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Douglas Allison, OT
• Jill Allison, LAC
• Mei Weng Allison, MD
• Michael Robert Allison, M.A., L.M.H.C.
• Ronan Cameron Allison
• Stephen Killefer Allison, M.D.
• Ashley Allman
• Allofor Inc.
• Abbigail O Allred
• Alexander James Allred, L.M.P.

• Internal Medicine Physician in Seattle, WA
• Providers in Seattle, WA by specialty
• Internal Medicine Physician in Washington

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 10, 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.