Michael Allen Castillo, MD

Primary specialty

Pain Medicine (Anesthesiology) PhysicianTaxonomy code 207LP2900X

License

27636 Issued in AZ

Practice address

11851 N 51St Ave Ste D120
Glendale, AZ 85304-2839

Phone

(602) 242-9891

Fax

(602) 242-9895

NPI assigned

Jul 26, 2006

Last updated

Aug 20, 2026By the provider in NPPES

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 4

Addresses

Other identifiers 1

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

Specialty

Interventional Pain ManagementAlso: Anesthesiology

Education

University of New Mexico School of Medicine, 1995

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Practice addresses (Care Compare)

Hospital & facility affiliations

• Banner Baywood Medical Center Hospital, Mesa, AZ, CCN 030088

Merit-based Incentive Payment System (MIPS)

Final score

82.29 of 100Reported as individual

Quality

73.88

Improvement activities

40

Cost

75.78

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://api.platform.athenahealth.com/2939/brand/1/csg/1/fhir/r4
• Direct secure messaging: michael.castillo.1@2939.direct.athenahealth.com

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Michael a Castillo MD PC

  • Pain Medicine Physician
  • Glendale, AZ
  • NPI 1750562534
  Medicare reassignment
• Arizona Regenerative Solutions

  • Pain Medicine Physician
  • Glendale, AZ
  • NPI 1770241184
  Authorized official Same address or phone
• Michael a Castillo MD, PC

  • Ambulatory Surgical Clinic/Center
  • Glendale, AZ
  • NPI 1316361199
  NPD
• Baywood Medical Associates, PLLC

  dba Desert Pain Institute - ASC

  • Ambulatory Surgical Clinic/Center
  • Mesa, AZ
  • NPI 1609930676
  NPD (past)

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

• Banner Baywood Medical Center

  • General Acute Care Hospital
  • Mesa, AZ
  • NPI 1194758284
  Care Compare affiliation

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

{
    "created_epoch": "1153872000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1787184000000",
    "number": "1619991643",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "11851 N 51ST AVE STE D120",
            "city": "GLENDALE",
            "state": "AZ",
            "postal_code": "853042839",
            "telephone_number": "602-242-9891",
            "fax_number": "602-242-9895"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "11851 N 51ST AVE STE D120",
            "city": "GLENDALE",
            "state": "AZ",
            "postal_code": "853042839",
            "telephone_number": "602-242-9891",
            "fax_number": "602-242-9895"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CASTILLO",
        "first_name": "MICHAEL",
        "middle_name": "ALLEN",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-07-26",
        "last_updated": "2026-08-20",
        "certification_date": "2026-08-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207LP2900X",
            "taxonomy_group": "",
            "desc": "Anesthesiology, Pain Medicine",
            "state": "AZ",
            "license": "27636",
            "primary": true
        },
        {
            "code": "251F00000X",
            "taxonomy_group": "",
            "desc": "Home Infusion",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "208VP0014X",
            "taxonomy_group": "",
            "desc": "Pain Medicine, Interventional Pain Medicine",
            "state": "AZ",
            "license": "27636",
            "primary": false
        },
        {
            "code": "208VP0000X",
            "taxonomy_group": "",
            "desc": "Pain Medicine, Pain Medicine",
            "state": "AZ",
            "license": "27636",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "517419",
            "state": "AZ"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Griselda Erika Castellanos Ayala, LAC
• Jennifer Castellanos, RD
• Walces Castelly, PA
• Gema Castillo
• Kyra Castillo
• Heather Lynn Castonguay, LCSW
• Alexzannah B Castro
• Michael Castro, MD
• Ronald Joseph Castro Sr., M.D.
• Alexis Caturan

• Pain Medicine (Anesthesiology) Physician in Glendale, AZ
• Providers in Glendale, AZ by specialty
• Pain Medicine (Anesthesiology) Physician in Arizona

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