Dr. Michael Sumner Maher, MD
- Medicare services, 2022
- 767
- Part D claims, 2023
- 24
- Industry payments
- $3,437
- Affiliated sites
- 1
- State license
- 1
- Practice address
- 9445 E Ironwood Square Dr, Scottsdale, AZ 85258-4574
- Practice phone
- Call (480) 747-6532
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Cardio Vascular Institute of Scottsdale
Physician office · Scottsdale, Arizona
Find Dr. Maher'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. Michael Sumner Maher is a cardiologist in Scottsdale, Arizona
Dr. Maher practices at Cardio Vascular Institute of Scottsdale in Scottsdale, Arizona.
Dr. Maher's NPI, 1235122755, was assigned on August 30, 2005. Dr. Maher graduated from University of Oklahoma College of Medicine in 1985. Dr. Maher holds Arizona license 20806.
- NPI
- 1235122755NPI Registry (opens in a new tab)
- NPI enumeration date
- August 30, 2005
- NPI status
- Active
- Practice phone
- (480) 747-6532
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Michael Sumner Maher practices at 2 locations in Scottsdale, Arizona
Dr. Maher's primary practice is Cardio Vascular Institute of Scottsdale, at 9445 E Ironwood Square Dr, Scottsdale, AZ 85258-4574. The practice phone is (480) 747-6532. The NPI Registry lists Dr. Maher's practice address as 9003 E Shea Blvd, Scottsdale, AZ 85260.
- Cardio Vascular Institute of ScottsdalePrimary9445 E Ironwood Square Dr, Scottsdale, AZ 85258-4574Phone(480) 747-6532
- NPI Registry address9003 E Shea Blvd, Scottsdale, AZ 85260 · Maricopa CountyPhone(480) 747-6532
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Michael Sumner Maher is affiliated with 1 site of care
Dr. Maher's primary practice is Cardio Vascular Institute of Scottsdale in Scottsdale, Arizona.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Michael Sumner Maher's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Maher practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cardio Vascular Institute of Scottsdale | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael Sumner Maher is one of 423 cardiologists in Arizona
Cardiovascular disease is Dr. Maher's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Maher is licensed in Arizona.
Specialties and state licenses
- Cardiovascular disease, ArizonaPrimary
Cardiologists near Dr. Maher
Counts of cardiologists 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. Michael Sumner Maher billed Medicare for 767 services in 2022
CMS data shows 767 Medicare services from Dr. Maher across 9 procedure codes in 2022. Medicare paid $58,006 for them.
Dr. Maher's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 1,5862022: 58863%
- Tests and treatments
- 2021: 6692022: 17973%
Where Dr. Maher's Medicare services took place, 2022
- In an office37249%
- In a facility39551%
Dr. Maher compared with the Arizona median for cardiologists, 2022
- Dr. Maher
- Arizona median
- Medicare services
- 767vs 2,35767% below
- Part D claims
- 24vs 1,36298% below
Medians across 403 cardiologists in Arizona with Dmand AI profiles that report each measure.
Dr. Maher's most billed Medicare procedure codes, 2022
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. Michael Sumner Maher's patients have a median age of 79
Across all payers, Dmand AI patient panel data puts Dr. Maher's median patient age at 79, with 29% women.
Dr. Maher's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 79
Patient panel by sex, all payers
- Women29%
- Men71%
Source: Dmand AI Patient Panel Data
Dr. Michael Sumner Maher wrote 24 Medicare Part D claims in 2023
In 2023, Dr. Maher wrote 24 Medicare Part D claims. They cover 1 drug, with $25,611 in total drug cost. In 2022, CMS named 1,673 claims across 32 drugs.
Dr. Maher's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 1,6732023: 2499%
Drugs named by CMS: 1 in 2023, 32 in 2022.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Michael Sumner Maher received $3,437 in industry payments from 2016 to 2022
CMS Open Payments shows 293 general payments to Dr. Maher from 26 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 91% of the total. Novartis Pharmaceuticals Corporation paid the most, $1,276.
General payments to Dr. Maher by program year, 2016 to 2022
General payments to Dr. Maher by kind, 2016 to 2022
- Food and beverage$3,12991%
- Education$2989%
- Consulting fees$110%
Companies that paid Dr. Maher the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael Sumner Maher graduated from University of Oklahoma College of Medicine
Dr. Maher graduated from University of Oklahoma College of Medicine in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael Sumner Maher'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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. Michael Sumner Maher
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What is Dr. Michael Sumner Maher's NPI number?
Dr. Michael Sumner Maher's NPI number is 1235122755. It was assigned on August 30, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael Sumner Maher?
Dr. Michael Sumner Maher is a cardiologist in Scottsdale, Arizona. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. Michael Sumner Maher practice?
Dr. Maher practices at 9445 E Ironwood Square Dr, Scottsdale, AZ 85258-4574. Dr. Maher also practices at 9003 E Shea Blvd, Scottsdale, AZ 85260. Dr. Maher's primary practice is Cardio Vascular Institute of Scottsdale in Scottsdale, Arizona.
What is Dr. Michael Sumner Maher's office phone number?
The practice phone on file for Dr. Maher is (480) 747-6532.
What is Dr. Michael Sumner Maher's medical license number?
Dr. Maher holds Arizona license 20806.
Does Dr. Michael Sumner Maher accept Medicare?
Yes. CMS data shows Dr. Maher billed Medicare for 767 services in 2022.
What services does Dr. Michael Sumner Maher bill to Medicare?
In 2022, Dr. Maher's most billed Medicare services were office visit, established patient (99214), hospital inpatient care (99233) and heart test or procedure (93306).
Where did Dr. Michael Sumner Maher go to medical school?
Dr. Maher graduated from University of Oklahoma College of Medicine in 1985.
What drugs does Dr. Michael Sumner Maher prescribe most?
In 2023 Medicare Part D data, Dr. Maher's most prescribed drugs by claims were Eliquis.
Has Dr. Michael Sumner Maher received payments from drug or device companies?
CMS Open Payments shows $3,437 in general payments to Dr. Maher from 26 companies from 2016 to 2022. The largest total came from Novartis Pharmaceuticals Corporation.
How long has Dr. Michael Sumner Maher been practicing?
Dr. Maher graduated from medical school in 1985, 41 years ago.
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