NPIMap

Individual provider Active NPI

Christine Celeste Brennan, MD

  • Sleep Medicine (Internal Medicine) Physician
  • Redwood City, CA
National Provider Identifier
1629657473
Registry record updated Mar 11, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Sleep Medicine (Internal Medicine) PhysicianTaxonomy code 207RS0012X
License
A195905 Issued in CA
Practice address
450 Broadway St FL 2
Redwood City, CA 94063-3132
Phone
(507) 236-6016
NPI assigned
Apr 7, 2021
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Mar 11, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Student in an Organized Health Care Education/Training Program 390200000X
Sleep Medicine (Internal Medicine) Physician 207RS0012X A195905 CA Primary

Addresses

Primary practice location

450 Broadway St FL 2
Redwood City, CA 94063-3132

Mailing address

1300 N 12TH St Ste 508
Phoenix, AZ 85006-2849
Phone (602) 839-3927

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address cbrennan815561@direct.med.utah.edu Direct University of Utah

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in UT
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20251118002378 UT Practitioner - Internal Medicine 7719389659 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
University of Toledo College of Medicine, 2021
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
University of Utah Adult ServicesGroup PAC ID 0941525273, 1,758 clinicians

Practice addresses (Care Compare)

50 N Medical Dr
Salt Lake City, UT 84132-0100
Phone (801) 585-6387

Hospital & facility affiliations

  • University of Utah Hospital and Clinics Hospital, Salt Lake City, UT, CCN 460009

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
A195905CAMDSleep Medicine (Internal Medicine) Physician

Practice roles

OrganizationSpecialtyStatusNew patients
University of Utah Adult Services Current Accepting new patients
University of Utah Adult Services CurrentSince Oct 4, 2025 Accepting new patients
University of Utah Adult Services CurrentSince Oct 4, 2025 Accepting new patients

Locations

50 N Medical Dr
Slc, UT 84132
Phone (801) 581-2292

Interoperability endpoints

  • Direct secure messaging: cbrennan815561@direct.med.utah.edu

Organizations & group practices 3

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.

Hospital & facility affiliations 3

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

NPI Registry JSON

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

{
    "created_epoch": "1617753600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773187200000",
    "number": "1629657473",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1300 N 12TH ST STE 508",
            "city": "PHOENIX",
            "state": "AZ",
            "postal_code": "850062849",
            "telephone_number": "602-839-3927",
            "fax_number": "602-839-3927"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "450 BROADWAY ST FL 2",
            "city": "REDWOOD CITY",
            "state": "CA",
            "postal_code": "940633132",
            "telephone_number": "507-236-6016"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BRENNAN",
        "first_name": "CHRISTINE",
        "middle_name": "CELESTE",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2021-04-07",
        "last_updated": "2026-03-11",
        "certification_date": "2026-03-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207RS0012X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Sleep Medicine",
            "state": "CA",
            "license": "A195905",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "cbrennan815561@direct.med.utah.edu",
            "affiliation": "Y",
            "affiliationName": "University of Utah",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "CSV",
            "contentTypeDescription": "CSV",
            "address_1": "50 N Medical Dr",
            "city": "Salt Lake City",
            "state": "UT",
            "country_code": "US",
            "postal_code": "841320100",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Redwood City, CA

Sources for this page

Verify at the official NPI Registry.