Dr. Robert David Pfeffer, MD
- Medicare services, 2024
- 99
- Medicare patients, 2024
- 49
- Part D claims, 2024
- 18
- Hospital affiliations
- 3
- Industry payments
- $4,951
- Practice address
- 2475 Broadway, Helena, MT 59601
- Practice phone
- Call (406) 442-2480
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Pfeffer'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. Robert David Pfeffer is a radiation oncologist in Helena, Montana
Dr. Pfeffer practices at St. Peter's Health Regional Medical Center in Helena, Montana, part of St. Peter's Health.
Dr. Pfeffer's NPI, 1679563639, was assigned on October 21, 2005. Dr. Pfeffer graduated from University of Washington School of Medicine in 1986. Dr. Pfeffer holds Montana license 6672.
- NPI
- 1679563639NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2264424761
- NPI enumeration date
- October 21, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (406) 442-2480
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 66
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Robert David Pfeffer practices at St. Peter's Health Regional Medical Center in Helena, Montana
Dr. Pfeffer's primary practice is St. Peter's Health Regional Medical Center, at 2475 Broadway, Helena, MT 59601 in Lewis And Clark County. The practice phone is (406) 442-2480.
- St. Peter's Health Regional Medical Center2475 Broadway, Helena, MT 59601 · Lewis And Clark CountyPhone(406) 442-2480
Source: Dmand AI Affiliation Data
Dr. Robert David Pfeffer is affiliated with 4 sites of care and 8 medical groups
Dr. Pfeffer's primary practice is St. Peter's Health Regional Medical Center in Helena, Montana, part of St. Peter's Health. Dr. Pfeffer is also affiliated with Parkview Logansport Hospital. The medical group on file is Benefis Health System. Dmand AI also links Dr. Pfeffer to 1 more hospital, 7 medical groups and 1 group practice or clinic, each named with a free account. Dr. Pfeffer's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Robert David Pfeffer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Pfeffer practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St. Peter's Health Regional Medical Center | Available with a free account |
| +3 more sites and 7 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 St. Peter's Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Robert David Pfeffer is one of 21 radiation oncologists in Montana
Radiation oncology is Dr. Pfeffer's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dr. Pfeffer is licensed in Montana.
Specialties and state licenses
- Radiation oncology, MontanaPrimary
Radiation oncologists near Dr. Pfeffer
Counts of radiation oncologists 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. Robert David Pfeffer billed Medicare for 99 services in 2024
CMS data shows 99 Medicare services from Dr. Pfeffer across 5 procedure codes in 2024, for 49 Medicare patients. Medicare paid $7,274 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Pfeffer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 2732024: 9964%
- Office and hospital visits
- 2023: 362024: 0100%
Dr. Pfeffer compared with the Montana median for radiation oncologists, 2024
- Dr. Pfeffer
- Montana median
- Medicare services
- 99vs 2,05395% below
- Medicare patients
- 49vs 21277% below
- Part D claims
- 11vs 5580% below
Medians across 21 radiation oncologists in Montana with Dmand AI profiles that report each measure.
Dr. Pfeffer'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. Pfeffer?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Pfeffer and other radiation oncologists in Montana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Robert David Pfeffer treated 49 Medicare patients in 2024, average age 73
CMS counts 49 Medicare patients who saw Dr. Pfeffer in 2024. The largest group is 65 to 74, with 23 patients. 75% of them have high blood pressure, and 71% have arthritis. Their average risk score is 1.98, 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. Pfeffer's median patient age at 70, with 47% women.
Dr. Pfeffer's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Pfeffer's Medicare patients by sex, 2024
- Women2857%
- Men2143%
Chronic conditions among Dr. Pfeffer's Medicare patients, 2024
- High blood pressure75%
- Arthritis71%
- Cancer69%
- High cholesterol65%
- Anxiety41%
- Depression41%
- Mood disorders41%
- Chronic kidney disease27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Pfeffer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
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. Robert David Pfeffer wrote 18 Medicare Part D claims in 2024
In 2024, Dr. Pfeffer wrote 18 Medicare Part D claims. 94% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $127 in total drug cost. In 2021, CMS named 14 claims across 1 drug.
Dr. Pfeffer's Part D claims by kind of drug, 2024
- Generic17 claims94%
- Brand-name and other1 claims6%
Dr. Pfeffer's most prescribed drugs by claims, 2022
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, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 142022: 1121%
Drugs named by CMS: 1 in 2022, 1 in 2021.
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. Robert David Pfeffer takes part in Medicare
Dr. Pfeffer 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. Robert David Pfeffer received $4,951 in industry payments from 2016 to 2023
CMS Open Payments shows 122 general payments to Dr. Pfeffer from 41 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 50% of the total. Varian Medical Systems, Inc. paid the most, $1,622.
General payments to Dr. Pfeffer by program year, 2016 to 2023
General payments to Dr. Pfeffer by kind, 2016 to 2023
- Food and beverage$2,45250%
- Travel and lodging$2,39948%
- Education$1002%
Companies that paid Dr. Pfeffer the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Robert David Pfeffer graduated from University of Washington School of Medicine
Dr. Pfeffer graduated from University of Washington School of Medicine in 1986.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Robert David Pfeffer'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. Robert David Pfeffer
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. Robert David Pfeffer's NPI number?
Dr. Robert David Pfeffer's NPI number is 1679563639. It was assigned on October 21, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert David Pfeffer?
Dr. Robert David Pfeffer is a radiation oncologist in Helena, Montana. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).
Where does Dr. Robert David Pfeffer practice?
Dr. Pfeffer practices at 2475 Broadway, Helena, MT 59601. Dr. Pfeffer's primary practice is St. Peter's Health Regional Medical Center in Helena, Montana, part of St. Peter's Health. Dmand AI also links Dr. Pfeffer to 1 hospital, 7 medical groups and 1 group practice or clinic.
What is Dr. Robert David Pfeffer's office phone number?
The practice phone on file for Dr. Pfeffer is (406) 442-2480.
What is Dr. Robert David Pfeffer's medical license number?
Dr. Pfeffer holds Montana license 6672.
Which hospitals is Dr. Robert David Pfeffer affiliated with?
Dr. Pfeffer practices at St. Peter's Health Regional Medical Center in Helena, Montana. Dr. Pfeffer is also affiliated with Parkview Logansport Hospital. Dmand AI links Dr. Pfeffer to 1 more hospital.
What medical group is Dr. Robert David Pfeffer part of?
Dr. Pfeffer is linked to Benefis Health System. Dmand AI links Dr. Pfeffer to 7 more medical groups.
Does Dr. Robert David Pfeffer accept Medicare?
Yes. CMS data shows Dr. Pfeffer billed Medicare for 99 services in 2024, and Dr. Pfeffer accepts Medicare assignment.
How many Medicare patients does Dr. Robert David Pfeffer see?
CMS counts 49 Medicare patients who saw Dr. Pfeffer in 2024, with an average age of 73.
What services does Dr. Robert David Pfeffer bill to Medicare?
In 2024, Dr. Pfeffer's most billed Medicare services were radiation oncology (77334), radiation oncology (77263) and radiation oncology (77427).
Show 4 more questionsShow fewer questions
Where did Dr. Robert David Pfeffer go to medical school?
Dr. Pfeffer graduated from University of Washington School of Medicine in 1986.
What drugs does Dr. Robert David Pfeffer prescribe most?
In 2022 Medicare Part D data, Dr. Pfeffer's most prescribed drugs by claims were Tamsulosin HCl.
Has Dr. Robert David Pfeffer received payments from drug or device companies?
CMS Open Payments shows $4,951 in general payments to Dr. Pfeffer from 41 companies from 2016 to 2023. The largest total came from Varian Medical Systems, Inc.
How long has Dr. Robert David Pfeffer been practicing?
Dr. Pfeffer graduated from medical school in 1986, 40 years ago.
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