Dr. Dennis W. Maier, MD
- Medicare services, 2024
- 463
- Medicare patients, 2024
- 124
- Part D claims, 2024
- 59
- Hospital affiliations
- 2
- Industry payments
- $263
- Practice address
- 1233 N 30th St, Billings, MT 59101
- Practice phone
- Call (406) 237-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
St Vincent Healthcare
Billings, Montana
Find Dr. Maier'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. Dennis W. Maier is a general surgeon in Billings, Montana
Dr. Maier practices at St Vincent Healthcare in Billings, Montana.
Dr. Maier's NPI, 1497787725, was assigned on July 7, 2006. Dr. Maier graduated from Indiana University School of Medicine in 1985. Dr. Maier holds Montana license 7333.
- NPI
- 1497787725NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6709801913
- NPI enumeration date
- July 7, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (406) 237-7000
- 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; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Dennis W. Maier practices at St Vincent Healthcare in Billings, Montana
Dr. Maier's primary practice is St Vincent Healthcare, at 1233 N 30th St, Billings, MT 59101 in Yellowstone County. The practice phone is (406) 237-7000.
- St Vincent Healthcare1233 N 30th St, Billings, MT 59101 · Yellowstone CountyPhone(406) 237-7000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Dennis W. Maier is affiliated with 6 sites of care and 3 medical groups
Dr. Maier's primary practice is St Vincent Healthcare in Billings, Montana. Dr. Maier is also affiliated with Billings Clinic Hospital. The medical group on file is SCL Health Medical Group. Dmand AI also links Dr. Maier to 1 more hospital, 3 group practices and clinics and 2 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Dennis W. Maier's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Maier practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St Vincent Healthcare | Available with a free account |
| +5 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Dennis W. Maier is one of 111 general surgeons in Montana
Surgery is Dr. Maier's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Maier is licensed in Montana.
Specialties and state licenses
- Surgery, MontanaPrimary
General surgeons near Dr. Maier
Counts of general surgeons 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. Dennis W. Maier billed Medicare for 463 services in 2024
CMS data shows 463 Medicare services from Dr. Maier across 4 procedure codes in 2024, for 124 Medicare patients. Medicare paid $18,620 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Maier's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 4182024: 29230%
- Office and hospital visits
- 2023: 2112024: 17119%
- Tests and treatments
- 2023: 792024: 0100%
Dr. Maier compared with the Montana median for general surgeons, 2024
- Dr. Maier
- Montana median
- Medicare services
- 463vs 1353.4 times
- Medicare patients
- 124vs 123Close to median
- Part D claims
- 27vs 4236% below
Medians across 121 general surgeons in Montana with Dmand AI profiles that report each measure.
Dr. Maier'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.
Need commercial claims for Dr. Maier?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Maier and other general surgeons in Montana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Dennis W. Maier treated 124 Medicare patients in 2024, average age 73
CMS counts 124 Medicare patients who saw Dr. Maier in 2024. The largest group is 65 to 74, with 47 patients. 75% of them have high blood pressure, and 68% have high cholesterol. 21% are also on Medicaid. Their average risk score is 2.93, 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. Maier's median patient age at 72, with 53% women.
Dr. Maier's Medicare patients by age, 2024
Dr. Maier's Medicare patients by sex, 2024
- Women5847%
- Men6653%
Chronic conditions among Dr. Maier's Medicare patients, 2024
- High blood pressure75%
- High cholesterol68%
- Arthritis57%
- Diabetes55%
- Chronic kidney disease52%
- Mood disorders44%
- Depression42%
- Heart failure37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Maier's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women53%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Dennis W. Maier wrote 59 Medicare Part D claims in 2024
In 2024, Dr. Maier wrote 59 Medicare Part D claims for 34 patients. 100% of them were for generic drugs. CMS names the drug for 27 of them, across 1 drug with 11 or more claims each, at $200 in total drug cost. In 2023, CMS named 32 claims across 2 drugs.
Dr. Maier'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. Maier's Part D claims, 2024
- Antibiotics86%51 of 59 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: 322024: 2716%
Drugs named by CMS: 1 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
Dr. Dennis W. Maier ranks in the 94th percentile for removal of tissue in Medicare
Dr. Maier accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 303 procedures of removal of tissue by Dr. Maier, more than 94% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Maier ranks in Medicare procedure volume
- Removal of tissue
- 94th percentile303 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Dennis W. Maier received $263 in industry payments from 2016 to 2024
CMS Open Payments shows 6 general payments to Dr. Maier from 4 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. Kerecis Limited paid the most, $196.
General payments to Dr. Maier by program year, 2016 to 2024
Companies that paid Dr. Maier 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. Dennis W. Maier graduated from Indiana University School of Medicine
Dr. Maier graduated from Indiana University School of Medicine in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Dennis W. Maier'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 Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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 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)Doctors and Clinicians Utilization Data (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. Dennis W. Maier
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. Dennis W. Maier's NPI number?
Dr. Dennis W. Maier's NPI number is 1497787725. It was assigned on July 7, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Dennis W. Maier?
Dr. Dennis W. Maier is a general surgeon in Billings, Montana. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Dennis W. Maier practice?
Dr. Maier practices at 1233 N 30th St, Billings, MT 59101. Dr. Maier's primary practice is St Vincent Healthcare in Billings, Montana. Dmand AI also links Dr. Maier to 1 hospital, 3 group practices and clinics and 2 medical groups.
What is Dr. Dennis W. Maier's office phone number?
The practice phone on file for Dr. Maier is (406) 237-7000.
What is Dr. Dennis W. Maier's medical license number?
Dr. Maier holds Montana license 7333.
Which hospitals is Dr. Dennis W. Maier affiliated with?
Dr. Maier is affiliated with Billings Clinic Hospital. Dmand AI links Dr. Maier to 1 more hospital.
What medical group is Dr. Dennis W. Maier part of?
Dr. Maier is linked to SCL Health Medical Group. Dmand AI links Dr. Maier to 2 more medical groups.
Does Dr. Dennis W. Maier accept Medicare?
Yes. CMS data shows Dr. Maier billed Medicare for 463 services in 2024, and Dr. Maier accepts Medicare assignment.
How many Medicare patients does Dr. Dennis W. Maier see?
CMS counts 124 Medicare patients who saw Dr. Maier in 2024, with an average age of 73.
What services does Dr. Dennis W. Maier bill to Medicare?
In 2024, Dr. Maier's most billed Medicare services were surgery: skin and soft tissue (11042), office visit, established patient (99212) and office visit, new patient (99202).
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Where did Dr. Dennis W. Maier go to medical school?
Dr. Maier graduated from Indiana University School of Medicine in 1985.
What drugs does Dr. Dennis W. Maier prescribe most?
In 2024 Medicare Part D data, Dr. Maier's most prescribed drugs by claims were Doxycycline Hyclate.
Has Dr. Dennis W. Maier received payments from drug or device companies?
CMS Open Payments shows $263 in general payments to Dr. Maier from 4 companies from 2016 to 2024. The largest total came from Kerecis Limited.
How long has Dr. Dennis W. Maier been practicing?
Dr. Maier graduated from medical school in 1985, 41 years ago.
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