Dr. Warren Maynard Butler, MD
- Medicare services, 2024
- 1,104
- Medicare patients, 2024
- 448
- Part D claims, 2024
- 256
- Hospital affiliations
- 1
- Industry payments
- $1,939
- 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. Butler'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. Warren Maynard Butler is an internist in Chandler, Arizona
Dr. Butler practices at Dignity Health Chandler Regional Medical Center in Chandler, Arizona, part of CommonSpirit Health.
Dr. Butler's NPI, 1750339784, was assigned on May 4, 2006. Dr. Butler holds Arizona license 41991.
- NPI
- 1750339784NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5991892671
- NPI enumeration date
- May 4, 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
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Warren Maynard Butler practices at Dignity Health Chandler Regional Medical Center in Chandler, Arizona
Dr. Butler'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. Warren Maynard Butler is affiliated with 4 sites of care and 3 medical groups
Dr. Butler's primary practice is Dignity Health Chandler Regional Medical Center in Chandler, Arizona, part of CommonSpirit Health. The medical group on file is Alliance Hospitalists. Dmand AI also links Dr. Butler to 3 more 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. Warren Maynard Butler's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Butler practices, 4 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 |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Warren Maynard Butler is one of 2,420 internists in Arizona
Internal medicine is Dr. Butler's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Butler's licenses on file in 2 states: Arizona and New Jersey.
Specialties and state licenses
- Internal medicine, ArizonaPrimary
- New Jersey license
Internists near Dr. Butler
Counts of internists 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. Warren Maynard Butler billed Medicare for 1,104 services in 2024
CMS data shows 1,104 Medicare services from Dr. Butler across 5 procedure codes in 2024, for 448 Medicare patients. Medicare paid $97,448 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Butler's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 9552024: 1,10416%
Dr. Butler compared with the Arizona median for internists, 2024
- Dr. Butler
- Arizona median
- Medicare services
- 1,104vs 4762.3 times
- Medicare patients
- 448vs 2052.2 times
- Part D claims
- 89vs 26066% below
Medians across 2,300 internists in Arizona with Dmand AI profiles that report each measure.
Dr. Butler'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Warren Maynard Butler treated 448 Medicare patients in 2024, average age 78
CMS counts 448 Medicare patients who saw Dr. Butler in 2024. The largest group is 75 to 84, with 178 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 14% are also on Medicaid. Their average risk score is 2.55, 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. Butler's median patient age at 75, with 54% women.
Dr. Butler's Medicare patients by age, 2024
Dr. Butler's Medicare patients by sex, 2024
- Women23753%
- Men21147%
Chronic conditions among Dr. Butler's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis58%
- Chronic kidney disease53%
- Ischemic heart disease48%
- Diabetes46%
- Heart failure41%
- Atrial fibrillation40%
Share of Medicare patients with each condition. A patient can have several.
Dr. Butler's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women54%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Warren Maynard Butler wrote 256 Medicare Part D claims in 2024
In 2024, Dr. Butler wrote 256 Medicare Part D claims for 153 patients. 91% of them were for generic drugs. CMS names the drug for 89 of them, across 7 drugs with 11 or more claims each, at $9,669 in total drug cost. In 2023, CMS named 34 claims across 2 drugs.
Dr. Butler's Part D claims by kind of drug, 2024
- Generic233 claims91%
- Brand-name23 claims9%
Dr. Butler'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. Butler's Part D claims, 2024
- Opioids12%31 of 256 claims
- Antibiotics20%52 of 256 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: 342024: 89162%
Drugs named by CMS: 7 in 2024, 2 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. Warren Maynard Butler takes part in Medicare
Dr. Butler 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. Warren Maynard Butler received $1,939 in industry payments from 2016 to 2023
CMS Open Payments shows 28 general payments to Dr. Butler from 14 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Abbott Laboratories paid the most, $1,157.
General payments to Dr. Butler by program year, 2016 to 2023
Companies that paid Dr. Butler the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Warren Maynard Butler'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) |
| 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. Warren Maynard Butler
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. Warren Maynard Butler's NPI number?
Dr. Warren Maynard Butler's NPI number is 1750339784. It was assigned on May 4, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Warren Maynard Butler?
Dr. Warren Maynard Butler is an internist in Chandler, Arizona. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Warren Maynard Butler practice?
Dr. Butler practices at 1955 West Frye Road, Chandler, AZ 85224. Dr. Butler's primary practice is Dignity Health Chandler Regional Medical Center in Chandler, Arizona, part of CommonSpirit Health. Dmand AI also links Dr. Butler to 3 group practices and clinics and 2 medical groups.
What is Dr. Warren Maynard Butler's office phone number?
The practice phone on file for Dr. Butler is (480) 728-3000.
What is Dr. Warren Maynard Butler's medical license number?
Dr. Butler holds Arizona license 41991, one of the licenses on file in 2 states.
Which states has Dr. Warren Maynard Butler been licensed in?
Dmand AI has state licenses on file for Dr. Butler in Arizona and New Jersey.
Which hospitals is Dr. Warren Maynard Butler affiliated with?
Dr. Butler practices at Dignity Health Chandler Regional Medical Center in Chandler, Arizona.
What medical group is Dr. Warren Maynard Butler part of?
Dr. Butler is linked to Alliance Hospitalists. Dmand AI links Dr. Butler to 2 more medical groups.
Does Dr. Warren Maynard Butler accept Medicare?
Yes. CMS data shows Dr. Butler billed Medicare for 1,104 services in 2024, and Dr. Butler accepts Medicare assignment.
How many Medicare patients does Dr. Warren Maynard Butler see?
CMS counts 448 Medicare patients who saw Dr. Butler in 2024, with an average age of 78.
Show 4 more questionsShow fewer questions
What services does Dr. Warren Maynard Butler bill to Medicare?
In 2024, Dr. Butler's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99232) and hospital inpatient care (99239).
What drugs does Dr. Warren Maynard Butler prescribe most?
In 2024 Medicare Part D data, Dr. Butler's most prescribed drugs by claims were Eliquis, Cefuroxime and Oxycodone HCl.
Has Dr. Warren Maynard Butler received payments from drug or device companies?
CMS Open Payments shows $1,939 in general payments to Dr. Butler from 14 companies from 2016 to 2023. The largest total came from Abbott Laboratories.
How long has Dr. Warren Maynard Butler been practicing?
Dr. Butler graduated from medical school in 2001, 25 years ago.
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