Michael Allen Castillo, MD
Pain Medicine (Anesthesiology) Physician · Glendale, AZ
Michael Allen Castillo, MD is a pain medicine (anesthesiology) physician with a practice address in Glendale, Arizona, and NPI 1619991643, issued on Jul 26, 2006. Check the license (Arizona 27636, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Michael Allen Castillo
- Credential
- MD
- Primary taxonomy
- Pain Medicine (Anesthesiology) Physician 207LP2900X
- License number
- 27636 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 5310 W Thunderbird RD Ste 215, Glendale, AZ 85306
- Phone
- (602) 242-9891
- Enumerated
- Jul 26, 2006
- Record last updated
- Feb 12, 2026
- Fax
- (602) 242-9895
- Medicaid ID
- 517419 AZ
- Medicare enrollment
- Enrolled (PECOS I20051005000396); accepts Medicare assignment
- Medical or professional school
- University Of New Mexico School Of Medicine, 1995
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest pain medicine (anesthesiology) physician records → All 92 in Arizona → Look up another NPI →
Verify Michael Allen Castillo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 27636Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average pain medicine (anesthesiology) physician in 2024
283 Medicare Part D claims for 89 beneficiaries, against an average of 1,750 among the 2,982 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 195 claims were for opioids.
Most prescribed
- Oxycodone Hcl104 claims
- Gabapentin26 claims
- Hydromorphone Hcl25 claims
- Oxycodone-Acetaminophen14 claims
- Diazepam11 claims
- Hydrocodone-Acetaminophen11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 76 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Michael Allen Castillo among 92 pain medicine (anesthesiology) physician records in Arizona
Michael Allen Castillo, MD is one of 92 pain medicine (anesthesiology) physician records with a practice address in Arizona. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 15% of them.
- NPI issued2006 · 15% of these records are older, 61% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1995 · median 2006 among the 68 with a school on file
- Record last updated2026 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207LP2900X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pain Medicine (Anesthesiology) Physician providers in Arizona
There are 92 pain medicine (anesthesiology) physician records in Arizona.
All 92 in Arizona → Every provider in Glendale → Pain Medicine (Anesthesiology) Physician nationwide →
The 8 pain medicine (anesthesiology) physician records with the nearest ZIP codes
- James Canavan, M.D.Glendale, AZ 853061710930995
- Deepesh Shah, MDGlendale, AZ 853061558548735
- Patrick Hogan, D.O.Glendale, AZ 853081023209228
- Brian Page, DOGlendale, AZ 853081245219336
- Craig SaranGlendale, AZ 853081508125709
- Neil Thakkar, D.O.Glendale, AZ 853081619175833
- Kurt Lundberg, DOGilbert, AZ 852971689930927
- Nand Bhardwaja, M.D.Gilbert, AZ 852951194790683
Common questions
What is Michael Allen Castillo, MD's NPI number?
Michael Allen Castillo, MD's National Provider Identifier (NPI) is 1619991643, issued on Jul 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael Allen Castillo, MD located?
The NPPES record lists a practice address at 5310 W Thunderbird RD Ste 215, Glendale, AZ, 85306. Phone: (602) 242-9891. Providers update this record themselves, so call before visiting.
How can I verify Michael Allen Castillo, MD's license?
NPPES lists Arizona license number 27636, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael Allen Castillo, MD prescribe under Medicare Part D?
In 2024, Michael Allen Castillo, MD had 283 Medicare Part D claims for 89 beneficiaries; the average among pain medicine (anesthesiology) physician prescribers was 1,750. Part D covers Medicare prescriptions only.
What is Michael Allen Castillo, MD's MIPS final score?
The 2023 MIPS final score is 76 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.