DR. MICHAEL ALLEN CASTILLO MD
NPI 1619991643
Anesthesiology - Pain Medicine in Glendale, AZ


Quality Rating: 75.96 out of 100 score

NPI Status: Active since July 26, 2006

Contact Information

5310 W THUNDERBIRD RD STE 215
GLENDALE, AZ
ZIP 85306
Phone: (602) 242-9891
Fax: (602) 242-9895

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  • Individual
  • Male
  • Years of Experience 31
  • Anesthesiology
  • Pain Medicine
  • Accepts Medicare Approved Payment
  • PECOS Enrolled
  • Medicare Quality Reporting

About MICHAEL CASTILLO

This page provides the complete NPI Profile along with additional information for Michael Castillo, a provider established in Glendale, Arizona with a medical specialization in Anesthesiology, focusing in pain medicine and more than 31 years of experience. He graduated from University Of New Mexico School Of Medicine in 1995. The healthcare provider is registered in the NPI registry with number 1619991643 assigned on July 2006. The practitioner's primary taxonomy code is 207LP2900X with license number 27636 (AZ). The provider is registered as an individual and his NPI record was last updated February 2026.

NPI
1619991643
Provider Name
DR. MICHAEL ALLEN CASTILLO MD
Gender
Male
Entity Type
Individual
Location Address
5310 W THUNDERBIRD RD STE 215 GLENDALE, AZ 85306
Location Phone
(602) 242-9891
Location Fax
(602) 242-9895
Mailing Address
5310 W THUNDERBIRD RD STE 215 GLENDALE, AZ 85306
Mailing Phone
(602) 242-9891
Mailing Fax
(602) 242-9895
Medical School Name
UNIVERSITY OF NEW MEXICO SCHOOL OF MEDICINE
Graduation Year
1995
Is Sole Proprietor?
Yes
Enumeration Date
07-26-2006
Last Update Date
02-12-2026
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Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Anesthesiology Pain Medicine

Taxonomy Code
207LP2900X
Type
Allopathic & Osteopathic Physicians
License No.
27636
License State
AZ
Taxonomy Description
An anesthesiologist who provides a high level of care, either as a primary physician or consultant, for patients experiencing problems with acute, chronic and/or cancer pain in both hospital and ambulatory settings. Patient care needs are also coordinated with other specialists.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
1208VP0000XAllopathic & Osteopathic Physicians

Pain Medicine
Pain Medicine

27636 (AZ)
2208VP0014XAllopathic & Osteopathic Physicians

Pain Medicine
Interventional Pain Medicine

27636 (AZ)
3251F00000XAgencies

Home Infusion

 

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
517419MEDICAID (05)AZ 

Medicare Participation & PECOS Enrollment Status

Michael Castillo is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Michael Castillo is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • PECOS PAC ID: 5597674242

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20051005000396

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Aspiration and/or injection of fluid from large joint

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

This service was performed 193 times for 72 patients

Aspiration and/or injection of fluid from medium joint

This procedure involves a needle being inserted into a medium-sized joint, such as a knee or shoulder, to remove (aspirate) excess fluid. Sometimes, medication may also be injected into the joint to reduce inflammation and pain.

This service was performed 35 times for 22 patients

Destruction of lower or sacral spinal facet joint nerves using imaging guidance, each additional facet joint

This procedure involves using imaging technology to locate and treat nerves in your lower spine or sacral area that may be causing pain. Each additional facet joint refers to treating more than one spinal nerve. It's a non-invasive way to manage chronic back pain.

This service was performed 41 times for 26 patients

Destruction of lower or sacral spinal facet joint nerves using imaging guidance, single facet joint

This procedure involves using imaging guidance to accurately target and destroy nerves in the lower or sacral spinal facet joint. It's done to relieve chronic back pain. The process is safe and usually effective.

This service was performed 38 times for 26 patients

Destruction of upper or middle spinal facet joint nerves using imaging guidance, single facet joint

This procedure involves the use of imaging technology to guide a needle to the nerves of a single facet joint in the upper or middle spine. The nerves are then treated to alleviate pain and improve mobility.

This service was performed 18 times for 11 patients

Electronic analysis and reprogramming of spinal canal drug infusion pump

This procedure involves the use of technology to assess and adjust a medication pump, implanted near the spine. The pump delivers precise doses of medication directly into the spinal canal to manage pain or spasticity. The reprogramming ensures optimal treatment.

This service was performed 92 times for 34 patients

Electronic analysis reprogramming and refill of spinal canal drug infusion pump by physician

This procedure involves a physician checking and adjusting your spinal canal drug infusion pump. The pump's programming is updated electronically and the medication reservoir is refilled, ensuring effective pain management and optimal device performance.

This service was performed 315 times for 68 patients

Established patient office or other outpatient visit, 10-19 minutes

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

This service was performed 11 times for 11 patients

Established patient office or other outpatient visit, 20-29 minutes

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

This service was performed 87 times for 65 patients

Established patient office or other outpatient visit, 30-39 minutes

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

This service was performed 725 times for 210 patients

Established patient office or other outpatient visit, 40-54 minutes

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

This service was performed 174 times for 93 patients

Hyaluronan or derivative, hyalgan, supartz or visco-3, for intra-articular injection, per dose

Hyaluronan or derivatives like Hyalgan, Supartz, or Visco-3, are used in intra-articular injections for joint pain relief. They help by improving joint lubrication, reducing inflammation, and promoting tissue healing. Each dose is administered directly into the joint space.

This service was performed 116 times for 26 patients

Injection of anesthetic agent and/or steroid into lower back and leg nerve

This procedure involves injecting an anesthetic or steroid into the lower back and leg nerve to alleviate pain. The injection helps reduce inflammation and numb the area, providing relief from discomfort. This is a common treatment for conditions such as sciatica and herniated discs.

This service was performed 32 times for 24 patients

Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level

This procedure involves injecting a mix of numbing and anti-inflammatory medication into a specific nerve root in the lower back. It helps manage pain and reduce inflammation. The process is guided by imaging technology for precision.

This service was performed 20 times for 12 patients

Injection of anesthetic or steroid into joint between lower spine and hip bone using imaging guidance

This procedure involves injecting medicine into the joint where your lower spine meets your hip bone. Using special imaging technology, the doctor ensures the medicine is delivered accurately. This can help reduce pain and inflammation in that area.

This service was performed 18 times for 14 patients

Injection of drug or substance under skin or into muscle

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

This service was performed 207 times for 41 patients

Injection of lower or sacral spine facet joint using imaging guidance, second level

This procedure involves injecting medication into the facet joints of your lower or sacral spine to manage pain. Imaging guidance ensures accurate placement. It's the second level, meaning it's done on two different joint levels.

This service was performed 98 times for 64 patients

Injection of lower or sacral spine facet joint using imaging guidance, single level

This procedure involves injecting medication into the facet joint in your lower back or sacral spine. It's done under imaging guidance to ensure accuracy. The aim is to alleviate pain and inflammation. It's a safe, often effective method for managing spinal discomfort.

This service was performed 99 times for 65 patients

Injection of substance into lower spine canal using imaging guidance

This procedure involves injecting a substance into your lower spine canal, guided by real-time images. It's done to diagnose or treat various conditions. You may feel slight discomfort, but it's generally safe and can provide valuable information for your treatment plan.

This service was performed 114 times for 54 patients

Injection of substance into middle or upper spine canal using imaging guidance

This procedure involves injecting a substance into your middle or upper spine canal. It's performed under imaging guidance to ensure accuracy. The substance can help diagnose or treat various conditions, providing relief from symptoms.

This service was performed 22 times for 14 patients

Injection of trigger points, 3 or more muscles

Trigger point injection therapy involves injecting medication into specific areas of your muscles, known as trigger points. These are areas that produce pain and discomfort. If you have three or more muscles affected, each will be treated individually.

This service was performed 57 times for 37 patients

Injection of upper or middle spine facet joint using imaging guidance, second level

This procedure involves injecting medication into the upper or middle spine facet joint, a small joint in your back. This is done under imaging guidance for precision. It's a second-level procedure, meaning it's done on two separate joints. It can help reduce pain and inflammation.

This service was performed 51 times for 29 patients

Injection of upper or middle spine facet joint using imaging guidance, single level

This procedure involves injecting medication into a joint in your upper or middle spine. It's performed under imaging guidance for precision. The aim is to reduce inflammation and pain. It's a single-level process, meaning one joint is treated at a time.

This service was performed 51 times for 29 patients

Injection, baclofen, 10 mg

Baclofen 10 mg injection is a medication procedure to manage muscle spasms caused by certain conditions. It works by relaxing the muscles, reducing pain and improving movement. It's administered via injection by a healthcare professional.

This service was performed 267 times for 57 patients

Injection, fentanyl citrate, 0.1 mg

Fentanyl citrate is a potent pain medication administered via injection. The 0.1 mg dosage is used to manage severe pain conditions. It works by blocking pain signals to the brain. It's crucial to follow the dosage instructions to prevent potential side effects.

This service was performed 822 times for 46 patients

Injection, hydromorphone, up to 4 mg

Hydromorphone injection is a pain relief medication administered through an injection, up to 4 mg. It works by altering the body's response to pain, providing comfort and relief. It's important to follow your healthcare provider's instructions for use.

This service was performed 2,980 times for 28 patients

Injection, midazolam hydrochloride, per 1 mg

Midazolam hydrochloride is a medication injected to help you relax or sleep before surgery or certain medical procedures. It works by calming the brain and nerves. It's given in small doses, measured in milligrams (mg).

This service was performed 514 times for 93 patients

Injection, morphine sulfate, preservative-free for epidural or intrathecal use, 10 mg

This is an injection of 10 mg morphine sulfate, a strong pain reliever. It's preservative-free and used for epidural or intrathecal administration. This method delivers medication into the spinal region to manage severe pain effectively.

This service was performed 970 times for 35 patients

Injection, triamcinolone acetonide, not otherwise specified, 10 mg

Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.

This service was performed 1,054 times for 148 patients

Insertion, revision, or repositioning of spinal canal tube for medication administration

This procedure involves placing, adjusting, or repositioning a tube in your spinal canal. This tube allows for direct administration of medication to the spine. It's typically done under local anesthesia and helps in managing conditions like chronic pain.

This service was performed 14 times for 13 patients

New patient office or other outpatient visit, 45-59 minutes

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

This service was performed 35 times for 35 patients

New patient office or other outpatient visit, 60-74 minutes

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

This service was performed 34 times for 34 patients

Testing for presence of drug, read by direct observation

Testing for the presence of drugs involves collecting a sample, usually urine, which is then analyzed for specific substances. The process is monitored directly to ensure accuracy and integrity. This test helps to confirm if drugs are present in your system.

This service was performed 147 times for 90 patients

Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes

This procedure involves a doctor administering a medication to reduce your consciousness during a procedure. This helps in managing discomfort and anxiety. The initial application lasts for 15 minutes and is for individuals aged 5 years or older.

This service was performed 238 times for 93 patients

Overall MIPS Quality Performance

The provider participated in CMS Quality Payment Program under the Merit-based Incentive Payment System (MIPS) and has an overall final score of 75.96, based on four performance areas: quality, improvement activities, promoting interoperability, and cost. The purpose of this information is to help people with Medicare make informed decisions and incentivize doctors and clinicians to maximize performance. The provider also has detailed performance information the following quality measures: .

The Merit-based Incentive Payment System (MIPS) is a way providers could use to participate in CMS Quality Payment Program (QPP). The MIPS program affects clinician reimbursement for Part B covered professional services and also rewards them for improving the quality of patient care and outcomes.

  • Final Score: 75.96 out of 100

    The MIPS program evaluates providers across multiple categories with a specific weight for each category resulting a in a MIPS final score that ranges from 0 to 100 points. The MIPS Final Score determines whether providers receive a negative, neutral or positive MIPS payment adjustment.

  • Quality Score: 56.29

    The Quality category assesses providers performance on clinical practices and patient outcomes under the traditional MIPS program. The quality measures help identify the quality of healthcare processes, outcomes, and patient experiences. The Quality measure category compromises 40% providers final MPIS scores.

    There are six collection types for MIPS quality measures: Electronic Clinical Quality Measures (eCQMs), MIPS Clinical Quality Measures (CQMs), Qualified Clinical Data Registry (QCDR) Measures, Medicare Part B claims measures, CMS Web Interface measures and The Consumer Assessment of Healthcare Providers and Systems (CAHPS) for MIPS Survey.

  • Promoting Interoperability Score: 100

    The Interoperability category measures the providers ability to use technology to exchange and make use of healthcare information in a way that is less burdensome and improves outcomes. The Interoperability measure category compromises 25% providers final MPIS scores.

    The MIPS Interoperability measure focuses on the use of certified electronic health record technology (CEHRT) to improve patient access health information, the exchange of information between clinicians and pharmacies and the systematic collection, analysis, and interpretation of healthcare data.

  • Improvement Activities Score: 40

    The Improvement Activities performance category evaluates the providers participation in clinical activities that support the improvement of clinical practice, care delivery, and outcomes. Providers have the option to choose 2 to 4 activities from an inventory of over 100 improvement activities. Providers typically choose the activities that best fit their needs. The improvement activities measure category compromises 15% providers final MPIS scores.

    The Improvement measures aim to better patient engagement, patient safety and other areas of patient care. The Improvement Activities category compromises 15% of providers final MPIS scores.

  • Cost Score: N/A

    The Cost performance category asses the amount and types of services provided and how clinicians coordinate care and seek improvement of health outcomes by ensuring patients receive the appropriate services.

    Although providers don't determine the price of healthcare services they are important in delivering high-quality care at a reasonable cost. The Cost measures category compromises 20% of providers final MPIS scores.

  • Cost Score: N/A

    The Cost performance category asses the amount and types of services provided and how clinicians coordinate care and seek improvement of health outcomes by ensuring patients receive the appropriate services.

    Although providers don't determine the price of healthcare services they are important in delivering high-quality care at a reasonable cost. The Cost measures category compromises 20% of providers final MPIS scores.

MIPS Quality Measures

The following performance measures were reported under the Merit-Based Incentive Payment System (MIPS) and Qualified Clinical Data Registry (QCDR) quality measures program.

Quality Measure Performance Number of Patients
Closing the Referral Loop: Receipt of Specialist Report 30% 66
Colorectal Cancer Screening 4% 421
Controlling High Blood Pressure 39% 36
Documentation of Current Medications in the Medical Record 97% 2765
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan 18% 650
Preventive Care and Screening: Screening for High Blood Pressure and Follow-Up Documented 17% 2548
Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention 49% 454
Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention 21% 38
Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention 56% 454
Provide Patients Electronic Access to Their Health Information 91% 425
Statin Therapy for the Prevention and Treatment of Cardiovascular Disease 69% 35
Use of High-Risk Medications in Older Adults 1% "Inverse Quality Measure"
This is an inverse quality measure, a lower rate means the provider is rated better.
396
Use of High-Risk Medications in Older Adults 2% "Inverse Quality Measure"
This is an inverse quality measure, a lower rate means the provider is rated better.
396
Use of High-Risk Medications in Older Adults 3% "Inverse Quality Measure"
This is an inverse quality measure, a lower rate means the provider is rated better.
396

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1619991643, we treat the final digit (3) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 77. The final step is to find the difference between that total and the next multiple of ten (80 - 77 = 3).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
6
Unchanged
Pos 3
1
Doubled → 2
Pos 4
9
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
9
Unchanged
Pos 7
1
Doubled → 2
Pos 8
6
Unchanged
Pos 9
4
Doubled → 8
Check
3
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 1 → 2 9 → 18 → 9 1 → 2 4 → 8

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 6 + 2 + 9 + 1 + 8 + 9 + 2 + 6 + 8 + 24 = 77

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 77 is 80. The difference is the calculated check digit.

80 - 77 = 3
This NPI is valid
The calculated check digit is 3, which matches the last digit of 1619991643.

Other Providers at the Same Location


The following 1 provider is registered at the same or a nearby location.

Pain Medicine (Pain Medicine)
5310 W THUNDERBIRD RD STE 215
GLENDALE, AZ 85306

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1619991643, enumerated as an "individual" on July 26, 2006.

The provider is located at 5310 W THUNDERBIRD RD STE 215 GLENDALE, AZ 85306 and the phone number is (602) 242-9891.

Anesthesiology with taxonomy code 207LP2900X and a focus in Pain Medicine.

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.