Dr. Frederick Richard Stack, MD
- Medicare services, 2024
- 650
- Medicare patients, 2024
- 253
- Part D claims, 2024
- 315
- Hospital affiliations
- 7
- Medical groups
- 11
- Practice address
- 1101 26th St S, Great Falls, MT 59405
- Practice phone
- Call (406) 455-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Stack'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. Frederick Richard Stack is an internist in Great Falls, Montana
Dr. Stack practices at Benefis East Campus in Great Falls, Montana, part of Benefis Health System.
Dr. Stack's NPI, 1548256977, was assigned on September 21, 2005. Dr. Stack graduated from University of Nebraska College of Medicine in 1991. Dr. Stack holds Iowa license MD-46368.
- NPI
- 1548256977NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9638149230
- NPI enumeration date
- September 21, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (406) 455-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Frederick Richard Stack practices at Benefis East Campus in Great Falls, Montana
Dr. Stack's primary practice is Benefis East Campus, at 1101 26th St S, Great Falls, MT 59405 in Cascade County. The practice phone is (406) 455-5000.
- Benefis East Campus1101 26th St S, Great Falls, MT 59405 · Cascade CountyPhone(406) 455-5000
Source: Dmand AI Affiliation Data
Dr. Frederick Richard Stack is affiliated with 8 sites of care and 11 medical groups
Dr. Stack's primary practice is Benefis East Campus in Great Falls, Montana, part of Benefis Health System. Dr. Stack is also affiliated with Banner - University Medical Center Tucson. The medical group on file is Benefis Health System. Dmand AI also links Dr. Stack to 5 more hospitals, 10 medical groups and 1 community health center, 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. Frederick Richard Stack's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Stack practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Benefis East Campus | Available with a free account |
| +7 more sites and 10 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Benefis Health System and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Frederick Richard Stack is one of 311 internists in Montana
Internal medicine is Dr. Stack's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Stack's licenses on file in 3 states: Iowa, Arizona and Montana.
Specialties and state licenses
- Internal medicine, IowaPrimary
- Specialist, Arizona
- Montana license
Internists near Dr. Stack
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. Frederick Richard Stack billed Medicare for 650 services in 2024
CMS data shows 650 Medicare services from Dr. Stack across 5 procedure codes in 2024, for 253 Medicare patients. Medicare paid $47,218 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Stack's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 8222024: 65021%
Dr. Stack compared with the Montana median for internists, 2024
- Dr. Stack
- Montana median
- Medicare services
- 650vs 47637% above
- Medicare patients
- 253vs 253Close to median
- Part D claims
- 107vs 14325% below
Medians across 340 internists in Montana with Dmand AI profiles that report each measure.
Dr. Stack'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. Stack?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Stack and other internists in Montana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Frederick Richard Stack treated 253 Medicare patients in 2024, average age 78
CMS counts 253 Medicare patients who saw Dr. Stack in 2024. The largest group is 75 to 84, with 90 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 22% are also on Medicaid. Their average risk score is 2.04, 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. Stack's median patient age at 68, with 47% women.
Dr. Stack's Medicare patients by age, 2024
Dr. Stack's Medicare patients by sex, 2024
- Women14457%
- Men10943%
Chronic conditions among Dr. Stack's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis56%
- Ischemic heart disease48%
- Chronic kidney disease46%
- Heart failure45%
- Atrial fibrillation42%
- Mood disorders41%
Share of Medicare patients with each condition. A patient can have several.
Dr. Stack's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women47%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Frederick Richard Stack wrote 315 Medicare Part D claims in 2024
In 2024, Dr. Stack wrote 315 Medicare Part D claims for 138 patients. 88% of them were for generic drugs. CMS names the drug for 107 of them, across 8 drugs with 11 or more claims each, at $604 in total drug cost. In 2023, CMS named 134 claims across 9 drugs.
Dr. Stack's Part D claims by kind of drug, 2024
- Generic276 claims88%
- Brand-name and other39 claims12%
Dr. Stack'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. Stack's Part D claims, 2024
- Opioids6%20 of 315 claims
- Antibiotics22%68 of 315 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: 1342024: 10720%
Drugs named by CMS: 8 in 2024, 9 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. Frederick Richard Stack takes part in Medicare
Dr. Stack 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)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Frederick Richard Stack graduated from University of Nebraska College of Medicine
Dr. Stack graduated from University of Nebraska College of Medicine in 1991.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Frederick Richard Stack'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. Frederick Richard Stack
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. Frederick Richard Stack's NPI number?
Dr. Frederick Richard Stack's NPI number is 1548256977. It was assigned on September 21, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Frederick Richard Stack?
Dr. Frederick Richard Stack is an internist in Great Falls, Montana. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Frederick Richard Stack practice?
Dr. Stack practices at 1101 26th St S, Great Falls, MT 59405. Dr. Stack's primary practice is Benefis East Campus in Great Falls, Montana, part of Benefis Health System. Dmand AI also links Dr. Stack to 5 hospitals, 10 medical groups and 1 community health center.
What is Dr. Frederick Richard Stack's office phone number?
The practice phone on file for Dr. Stack is (406) 455-5000.
What is Dr. Frederick Richard Stack's medical license number?
Dr. Stack holds Iowa license MD-46368, one of the licenses on file in 3 states.
Which states has Dr. Frederick Richard Stack been licensed in?
Dmand AI has state licenses on file for Dr. Stack in Iowa, Arizona and Montana.
Which hospitals is Dr. Frederick Richard Stack affiliated with?
Dr. Stack practices at Benefis East Campus in Great Falls, Montana. Dr. Stack is also affiliated with Banner - University Medical Center Tucson. Dmand AI links Dr. Stack to 5 more hospitals.
What medical group is Dr. Frederick Richard Stack part of?
Dr. Stack is linked to Benefis Health System. Dmand AI links Dr. Stack to 10 more medical groups.
Does Dr. Frederick Richard Stack accept Medicare?
Yes. CMS data shows Dr. Stack billed Medicare for 650 services in 2024, and Dr. Stack accepts Medicare assignment.
How many Medicare patients does Dr. Frederick Richard Stack see?
CMS counts 253 Medicare patients who saw Dr. Stack in 2024, with an average age of 78.
Show 4 more questionsShow fewer questions
What services does Dr. Frederick Richard Stack bill to Medicare?
In 2024, Dr. Stack's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99239) and hospital inpatient care (99223).
Where did Dr. Frederick Richard Stack go to medical school?
Dr. Stack graduated from University of Nebraska College of Medicine in 1991.
What drugs does Dr. Frederick Richard Stack prescribe most?
In 2024 Medicare Part D data, Dr. Stack's most prescribed drugs by claims were Prednisone, Amlodipine Besylate and Amoxicillin-Clavulanate Potass.
How long has Dr. Frederick Richard Stack been practicing?
Dr. Stack graduated from medical school in 1991, 35 years ago.
Selling to internal medicine practices?
See internists in Montana by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card