MICHAEL A CASTILLO MD PC
MICHAEL A CASTILLO MD PC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1750562534, based in Glendale, AZ. The organization lists 3 taxonomy classifications, with Pain Medicine Physician recorded as primary.
Getting there
The practice address on file is 11851 N 51ST AVE STE D120, Glendale, AZ 85304. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 27636 | AZ | Pain Medicine (Anesthesiology) Physician |
| 27636 | AZ | Pain Medicine Physician primary |
| 27636 | AZ | Interventional Pain Medicine Physician |
This provider holds licence 27636 issued in AZ. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Part B Supplier - Clinic/group Practice
- PAC ID
- 2062598832
Enrolled in Medicare 2 times, across 1 state:
| State | Enrollment ID | Provider type |
|---|---|---|
| Arizona | O20080320000094 | Part B Supplier - Clinic/group Practice |
| Arizona | O20200514002742 | Dme Supplier - Physician - Interventional Pain Management |
Medicare enrolment is recorded as approved under the provider type Part B Supplier - Clinic/group Practice. There are 2 separate enrolment records. Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Pain Medicine covers
Pain Medicine is a primary medical specialty based on a distinct body of knowledge and a well-defined scope of clinical practice that is founded on science, research and education. It is concerned with the study of pain, the prevention of pain, and the evaluation, treatment, and rehabilitation of persons in pain. A comprehensive evaluation incorporates the physical, psychological, cognitive and socio-cultural contributions to pain. The treatment protocol may include pharmacological, invasive, behavioral, cognitive, rehabilitative and complementary strategies provided in a concurrent focused and patient specific manner. The pain medicine physician often serves the patient as a frontline physician regarding their pain, but also may serve as a consultant to other physicians, direct an interdisciplinary/multidisciplinary treatment team, conduct research, or advocate for the patient's pain care with public and private agencies. The Pain Medicine physician may work in variety of settings including office, clinic, hospital, university, or governmental/public agencies. NUCC Health Care Provider Taxonomy, code 208VP0000X
All registered taxonomy codes
This provider registers 3 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207LP2900X | Pain Medicine (Anesthesiology) Physician Pain Medicine | 27636 | AZ | |
| 208VP0000X | Pain Medicine Physician Pain Medicine | 27636 | AZ | primary |
| 208VP0014X | Interventional Pain Medicine Physician Interventional Pain Medicine | 27636 | AZ |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1750562534 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Nov 20, 2007 |
| Last updated | Aug 20, 2026 |
| Status | Active |
| Practice address |
11851 N 51ST AVE STE D120 Glendale, AZ 85304 (602) 242-9891 Fax (602) 242-9895 |
| Other identifiers |
517419
· Medicaid (AZ) 6669 · Other |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 7 | 5 | 0 | 5 | 6 | 2 | 5 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 7 | 1 | 0 | 1 | 6 | 4 | 5 | 6 |
Sum = 56 · next multiple of 10 = 60 · check digit = 4 · actual last digit = 4
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.