Individual provider Active NPI

Bayley Keiko Leonahe Brennan, MD

  • Anesthesiology Physician
  • Scottsdale, AZ
National Provider Identifier
1861295529
Registry record updated Jul 1, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anesthesiology PhysicianTaxonomy code 207L00000X
License
R81493 Issued in AZ
Practice address
13400 E Shea Blvd
Scottsdale, AZ 85259-5452
Phone
(480) 301-8000
NPI assigned
Mar 28, 2025
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 1, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Anesthesiology Physician 207L00000X R81493 AZ Primary
Internal Medicine Physician 207R00000X R81493 AZ

Addresses

Primary practice location

13400 E Shea Blvd
Scottsdale, AZ 85259-5452

Mailing address

PO Box 860912
Minneapolis, MN 55486-0912
Phone (480) 301-8000

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address bbrennan1987005@ehrdirect.mayoclinicmsg.org

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in AZ
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

Enrollment IDStateProvider typePAC IDDetails
I20250826003124 AZ Order and Referring Only - Internal MedicinePractitioner - Internal Medicine 2567962236

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
R81493AZMDInternal Medicine Physician

NPI Registry JSON

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

{
    "created_epoch": "1743120000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782864000000",
    "number": "1861295529",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 860912",
            "city": "MINNEAPOLIS",
            "state": "MN",
            "postal_code": "554860912",
            "telephone_number": "480-301-8000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "13400 E SHEA BLVD",
            "city": "SCOTTSDALE",
            "state": "AZ",
            "postal_code": "852595452",
            "telephone_number": "480-301-8000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BRENNAN",
        "first_name": "BAYLEY",
        "middle_name": "KEIKO LEONAHE",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2025-03-28",
        "last_updated": "2026-07-01",
        "certification_date": "2026-07-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "AZ",
            "license": "R81493",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "AZ",
            "license": "R81493",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "bbrennan1987005@ehrdirect.mayoclinicmsg.org",
            "affiliation": "N",
            "address_1": "13400 E Shea Blvd",
            "city": "Scottsdale",
            "state": "AZ",
            "country_code": "US",
            "postal_code": "852595452",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Scottsdale, AZ

Sources for this page

Verify at the official NPI Registry.