Individual provider Active NPI

Amy Withey Holloway, PA-C

  • Physician Assistant
  • Phoenix, AZ
National Provider Identifier
1659797512
Registry record updated Feb 17, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Physician AssistantTaxonomy code 363A00000X
License
7482 Issued in AZ
Practice address
5777 E Mayo Blvd
Phoenix, AZ 85054-4502
Phone
(480) 342-2000
NPI assigned
Mar 14, 2014
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Feb 17, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Medical Physician Assistant 363AM0700X 51317 CA
Physician Assistant 363A00000X 7482 AZ Primary

Addresses

Primary practice location

5777 E Mayo Blvd
Phoenix, AZ 85054-4502

Mailing address

13400 E Shea Blvd
Scottsdale, AZ 85259-5499
Phone (480) 301-8000

Other names 1

  • Amy Withey Former name

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: No
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20201111001096 AZ Practitioner - Physician Assistant 5698907806 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Physician Assistant
Education
Other, 2013
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Mayo Clinic ArizonaGroup PAC ID 7012829930, 1,618 clinicians

Practice addresses (Care Compare)

13400 E Shea Blvd
Scottsdale, AZ 85259-5404
Phone (480) 301-8000

Hospital & facility affiliations

  • Mayo Clinic Hospital Hospital, Phoenix, AZ, CCN 030103

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Physician Assistant

State licenses

LicenseStateTypeSpecialty
51317CAMDMarriage & Family Therapist
7482AZMDGeneral Practice Dentistry

Practice roles

OrganizationSpecialtyStatusNew patients
Mayo Clinic Arizona CurrentSince Nov 4, 2020 Accepting new patients
Mayo Clinic Arizona CurrentSince Nov 4, 2020 Accepting new patients

Locations

5777 E Mayo Blvd
Phoenix, AZ 85054
Phone (480) 342-1800

13400 E Shea Blvd
Scottsdale, AZ 85259

Organizations & group practices 2

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 1

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": "1394755200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771286400000",
    "number": "1659797512",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "13400 E SHEA BLVD",
            "city": "SCOTTSDALE",
            "state": "AZ",
            "postal_code": "852595499",
            "telephone_number": "480-301-8000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5777 E MAYO BLVD",
            "city": "PHOENIX",
            "state": "AZ",
            "postal_code": "850544502",
            "telephone_number": "480-342-2000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HOLLOWAY",
        "first_name": "AMY",
        "middle_name": "WITHEY",
        "name_prefix": "Ms.",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2014-03-14",
        "last_updated": "2026-02-17",
        "certification_date": "2026-02-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363AM0700X",
            "taxonomy_group": "",
            "desc": "Physician Assistant, Medical",
            "state": "CA",
            "license": "51317",
            "primary": false
        },
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "AZ",
            "license": "7482",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "AMY",
            "last_name": "WITHEY",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in Phoenix, AZ

Sources for this page

Verify at the official NPI Registry.