Dr. Brian Nicholas Casillas, MD
- Medicare services, 2024
- 200
- Medicare patients, 2024
- 161
- Part D claims, 2024
- 142
- Hospital affiliations
- 3
- Medical groups
- 3
- Practice address
- 18701 North 67th Avenue, Glendale, AZ 85308
- Practice phone
- Call (623) 561-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Casillas' professional email, personal email and mobile number
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Dr. Brian Nicholas Casillas is an emergency medicine physician in Glendale, Arizona
Dr. Casillas practices at Abrazo Arrowhead Campus in Glendale, Arizona, part of Tenet Healthcare.
Dr. Casillas' NPI, 1215514310, was assigned on March 25, 2021. Dr. Casillas graduated from University of Iowa, RJ & L Carver College of Medicine in 2021. Dr. Casillas holds Arizona license 71780.
- NPI
- 1215514310NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2567906324
- NPI enumeration date
- March 25, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (623) 561-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 31
- Medical school graduation
- 2021
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Brian Nicholas Casillas practices at Abrazo Arrowhead Campus in Glendale, Arizona
Dr. Casillas' primary practice is Abrazo Arrowhead Campus, at 18701 North 67th Avenue, Glendale, AZ 85308 in Maricopa County. The practice phone is (623) 561-1000.
- Abrazo Arrowhead Campus18701 North 67th Avenue, Glendale, AZ 85308 · Maricopa CountyPhone(623) 561-1000
Source: Dmand AI Affiliation Data
Dr. Brian Nicholas Casillas is affiliated with 5 sites of care and 3 medical groups
Dr. Casillas' primary practice is Abrazo Arrowhead Campus in Glendale, Arizona, part of Tenet Healthcare. Dr. Casillas is also affiliated with Banner Desert Medical Center. The medical group on file is Emergency Group of Arizona. Dmand AI also links Dr. Casillas to 1 more hospital, 2 group practices and clinics and 2 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Brian Nicholas Casillas' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Casillas practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Abrazo Arrowhead Campus | Available with a free account |
| +4 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Brian Nicholas Casillas is one of 1,360 emergency medicine physicians in Arizona
Emergency medicine is Dr. Casillas' primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Casillas is licensed in Arizona.
Specialties and state licenses
- Emergency medicine, ArizonaPrimary
Emergency medicine physicians near Dr. Casillas
Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Brian Nicholas Casillas billed Medicare for 200 services in 2024
CMS data shows 200 Medicare services from Dr. Casillas across 3 procedure codes in 2024, for 161 Medicare patients. Medicare paid $19,648 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Casillas' Medicare services by type, 2024
- Office and hospital visits151
- Tests and treatments49
Dr. Casillas compared with the Arizona median for emergency medicine physicians, 2024
- Dr. Casillas
- Arizona median
- Medicare services
- 200vs 2167% below
- Medicare patients
- 161vs 21023% below
- Part D claims
- 41vs 5018% below
Medians across 1,326 emergency medicine physicians in Arizona with Dmand AI profiles that report each measure.
Dr. Casillas' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Casillas and other emergency medicine physicians in Arizona.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Brian Nicholas Casillas treated 161 Medicare patients in 2024, average age 75
CMS counts 161 Medicare patients who saw Dr. Casillas in 2024. The largest group is 75 to 84, with 65 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 18% are also on Medicaid. Their average risk score is 1.68, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Casillas' median patient age at 53, with 58% women.
Dr. Casillas' Medicare patients by age, 2024
Dr. Casillas' Medicare patients by sex, 2024
- Women7848%
- Men8352%
Chronic conditions among Dr. Casillas' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis55%
- Ischemic heart disease48%
- Diabetes44%
- Chronic kidney disease42%
- Anxiety36%
- Mood disorders35%
Share of Medicare patients with each condition. A patient can have several.
Dr. Casillas' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 53
Patient panel by sex, all payers
- Women58%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Brian Nicholas Casillas wrote 142 Medicare Part D claims in 2024
In 2024, Dr. Casillas wrote 142 Medicare Part D claims for 99 patients. 94% of them were for generic drugs. CMS names the drug for 41 of them, across 3 drugs with 11 or more claims each, at $229 in total drug cost. In 2023, CMS named 14 claims across 1 drug.
Dr. Casillas' Part D claims by kind of drug, 2024
- Generic134 claims94%
- Brand-name and other8 claims6%
Dr. Casillas' most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Casillas' Part D claims, 2024
- Opioids13%18 of 142 claims
- Antibiotics40%57 of 142 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 142024: 41193%
Drugs named by CMS: 3 in 2024, 1 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Brian Nicholas Casillas takes part in Medicare
Dr. Casillas accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Brian Nicholas Casillas graduated from University of Iowa, RJ & L Carver College of Medicine
Dr. Casillas graduated from University of Iowa, RJ & L Carver College of Medicine in 2021.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Brian Nicholas Casillas's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Brian Nicholas Casillas
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Brian Nicholas Casillas' NPI number?
Dr. Brian Nicholas Casillas' NPI number is 1215514310. It was assigned on March 25, 2021, and it is active in the NPI Registry.
What kind of doctor is Dr. Brian Nicholas Casillas?
Dr. Brian Nicholas Casillas is an emergency medicine physician in Glendale, Arizona. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Brian Nicholas Casillas practice?
Dr. Casillas practices at 18701 North 67th Avenue, Glendale, AZ 85308. Dr. Casillas' primary practice is Abrazo Arrowhead Campus in Glendale, Arizona, part of Tenet Healthcare. Dmand AI also links Dr. Casillas to 1 hospital, 2 group practices and clinics and 2 medical groups.
What is Dr. Brian Nicholas Casillas' office phone number?
The practice phone on file for Dr. Casillas is (623) 561-1000.
What is Dr. Brian Nicholas Casillas' medical license number?
Dr. Casillas holds Arizona license 71780.
Which hospitals is Dr. Brian Nicholas Casillas affiliated with?
Dr. Casillas practices at Abrazo Arrowhead Campus in Glendale, Arizona. Dr. Casillas is also affiliated with Banner Desert Medical Center. Dmand AI links Dr. Casillas to 1 more hospital.
What medical group is Dr. Brian Nicholas Casillas part of?
Dr. Casillas is linked to Emergency Group of Arizona. Dmand AI links Dr. Casillas to 2 more medical groups.
Does Dr. Brian Nicholas Casillas accept Medicare?
Yes. CMS data shows Dr. Casillas billed Medicare for 200 services in 2024, and Dr. Casillas accepts Medicare assignment.
How many Medicare patients does Dr. Brian Nicholas Casillas see?
CMS counts 161 Medicare patients who saw Dr. Casillas in 2024, with an average age of 75.
What services does Dr. Brian Nicholas Casillas bill to Medicare?
In 2024, Dr. Casillas' most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and emergency department visit (99284).
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Where did Dr. Brian Nicholas Casillas go to medical school?
Dr. Casillas graduated from University of Iowa, RJ & L Carver College of Medicine in 2021.
What drugs does Dr. Brian Nicholas Casillas prescribe most?
In 2024 Medicare Part D data, Dr. Casillas' most prescribed drugs by claims were Ondansetron HCl, Cephalexin and Oxycodone HCl.
How long has Dr. Brian Nicholas Casillas been practicing?
Dr. Casillas graduated from medical school in 2021, 5 years ago.
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