Dr. Brian W. Millhollon, MD
- Medicare services, 2024
- 2,378
- Medicare patients, 2024
- 84
- Part D claims, 2024
- 391
- Hospital affiliations
- 1
- Industry payments
- $1,317
- Practice address
- 1955 West Frye Road, Chandler, AZ 85224
- Practice phone
- Call (480) 728-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Millhollon's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Brian W. Millhollon is an allergist and immunologist in Chandler, Arizona
Dr. Millhollon practices at Dignity Health Chandler Regional Medical Center in Chandler, Arizona, part of CommonSpirit Health.
Dr. Millhollon's NPI, 1841212693, was assigned on July 24, 2006. Dr. Millhollon graduated from Louisiana State University School of Medicine in New Orleans in 1982. Dr. Millhollon holds Arizona license 21604.
- NPI
- 1841212693NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6002841921
- NPI enumeration date
- July 24, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (480) 728-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Brian W. Millhollon practices at Dignity Health Chandler Regional Medical Center in Chandler, Arizona
Dr. Millhollon's primary practice is Dignity Health Chandler Regional Medical Center, at 1955 West Frye Road, Chandler, AZ 85224 in Maricopa County. The practice phone is (480) 728-3000.
- Dignity Health Chandler Regional Medical Center1955 West Frye Road, Chandler, AZ 85224 · Maricopa CountyPhone(480) 728-3000
Source: Dmand AI Affiliation Data
Dr. Brian W. Millhollon is affiliated with 2 sites of care
Dr. Millhollon's primary practice is Dignity Health Chandler Regional Medical Center in Chandler, Arizona, part of CommonSpirit Health. Dmand AI also links Dr. Millhollon to 1 physician office, 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 W. Millhollon's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Millhollon practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dignity Health Chandler Regional Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Brian W. Millhollon is one of 74 allergists and immunologists in Arizona
Allergy and immunology is Dr. Millhollon's primary specialty in the NPI Registry, under taxonomy code 207K00000X. Dr. Millhollon is licensed in Arizona.
Specialties and state licenses
- Allergy and immunology, ArizonaPrimary
Allergists and immunologists near Dr. Millhollon
Counts of allergists and immunologists 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 W. Millhollon billed Medicare for 2,378 services in 2024
CMS data shows 2,378 Medicare services from Dr. Millhollon across 8 procedure codes in 2024, for 84 Medicare patients. Medicare paid $24,121 for them. Every service was in an office.
Dr. Millhollon's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 2,6762024: 2,24216%
- Office and hospital visits
- 2023: 1472024: 1367%
Dr. Millhollon compared with the Arizona median for allergists and immunologists, 2024
- Dr. Millhollon
- Arizona median
- Medicare services
- 2,378vs 2,96520% below
- Medicare patients
- 84vs 21160% below
- Part D claims
- 322vs 38817% below
Medians across 71 allergists and immunologists in Arizona with Dmand AI profiles that report each measure.
Dr. Millhollon's 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. Millhollon and other allergists and immunologists in Arizona.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Brian W. Millhollon treated 84 Medicare patients in 2024, average age 72
CMS counts 84 Medicare patients who saw Dr. Millhollon in 2024. The largest group is 65 to 74, with 57 patients. 75% of them have high cholesterol, and 65% have high blood pressure. Their average risk score is 0.75, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Millhollon's median patient age at 43, with 55% women.
Dr. Millhollon's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Millhollon's Medicare patients by sex, 2024
- Women6071%
- Men2429%
Chronic conditions among Dr. Millhollon's Medicare patients, 2024
- High cholesterol75%
- High blood pressure65%
- Arthritis50%
- Asthma48%
- Diabetes30%
- Ischemic heart disease21%
- Mood disorders21%
- Anxiety20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Millhollon's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 43
Patient panel by sex, all payers
- Women55%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Brian W. Millhollon wrote 391 Medicare Part D claims in 2024
In 2024, Dr. Millhollon wrote 391 Medicare Part D claims for 78 patients. 70% of them were for generic drugs. CMS names the drug for 322 of them, across 11 drugs with 11 or more claims each, at $97,047 in total drug cost. In 2023, CMS named 286 claims across 10 drugs.
Dr. Millhollon's Part D claims by kind of drug, 2024
- Generic275 claims70%
- Brand-name116 claims30%
Dr. Millhollon's 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. Millhollon's Part D claims, 2024
- Antibiotics15%60 of 391 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: 2862024: 32213%
Drugs named by CMS: 11 in 2024, 10 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 W. Millhollon takes part in Medicare
Dr. Millhollon 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 W. Millhollon received $1,317 in industry payments from 2016 to 2024
CMS Open Payments shows 69 general payments to Dr. Millhollon from 12 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $567.
General payments to Dr. Millhollon by program year, 2016 to 2024
Companies that paid Dr. Millhollon the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Brian W. Millhollon graduated from Louisiana State University School of Medicine in New Orleans
Dr. Millhollon graduated from Louisiana State University School of Medicine in New Orleans in 1982.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Brian W. Millhollon'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) |
| Industry payments | Open Payments (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 W. Millhollon
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 W. Millhollon's NPI number?
Dr. Brian W. Millhollon's NPI number is 1841212693. It was assigned on July 24, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Brian W. Millhollon?
Dr. Brian W. Millhollon is an allergist and immunologist in Chandler, Arizona. The primary specialty in the NPI Registry is Allergy & Immunology Physician (taxonomy code 207K00000X).
Where does Dr. Brian W. Millhollon practice?
Dr. Millhollon practices at 1955 West Frye Road, Chandler, AZ 85224. Dr. Millhollon's primary practice is Dignity Health Chandler Regional Medical Center in Chandler, Arizona, part of CommonSpirit Health. Dmand AI also links Dr. Millhollon to 1 physician office.
What is Dr. Brian W. Millhollon's office phone number?
The practice phone on file for Dr. Millhollon is (480) 728-3000.
What is Dr. Brian W. Millhollon's medical license number?
Dr. Millhollon holds Arizona license 21604.
Which hospitals is Dr. Brian W. Millhollon affiliated with?
Dr. Millhollon practices at Dignity Health Chandler Regional Medical Center in Chandler, Arizona.
Does Dr. Brian W. Millhollon accept Medicare?
Yes. CMS data shows Dr. Millhollon billed Medicare for 2,378 services in 2024, and Dr. Millhollon accepts Medicare assignment.
How many Medicare patients does Dr. Brian W. Millhollon see?
CMS counts 84 Medicare patients who saw Dr. Millhollon in 2024, with an average age of 72.
What services does Dr. Brian W. Millhollon bill to Medicare?
In 2024, Dr. Millhollon's most billed Medicare services were allergy test or treatment (95004), allergy test or treatment (95165) and allergy test or treatment (95117).
Where did Dr. Brian W. Millhollon go to medical school?
Dr. Millhollon graduated from Louisiana State University School of Medicine in New Orleans in 1982.
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What drugs does Dr. Brian W. Millhollon prescribe most?
In 2024 Medicare Part D data, Dr. Millhollon's most prescribed drugs by claims were Prednisone, Azithromycin and Albuterol Sulfate Hfa.
Has Dr. Brian W. Millhollon received payments from drug or device companies?
CMS Open Payments shows $1,317 in general payments to Dr. Millhollon from 12 companies from 2016 to 2024. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Brian W. Millhollon been practicing?
Dr. Millhollon graduated from medical school in 1982, 44 years ago.
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