Dr. David Mitchell Marcus, MD
- Medicare services, 2024
- 73
- Medicare patients, 2024
- 81
- Part D claims, 2024
- 21
- Hospital affiliations
- 2
- Industry payments
- $4,956
- Practice address
- 1906 Blake Ave, Glenwood Springs, CO 81601
- Practice phone
- Call (970) 945-6535
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Marcus' professional email, personal email and mobile number
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Dr. David Mitchell Marcus is a radiation oncologist in Glenwood Springs, Colorado
Dr. Marcus practices at Valley View Hospital in Glenwood Springs, Colorado, part of Valley View Hospital Association.
Dr. Marcus' NPI, 1306089362, was assigned on April 7, 2009. Dr. Marcus graduated from Emory University School of Medicine in 2009. Dr. Marcus holds Colorado license DR.0015469.
- NPI
- 1306089362NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0941522247
- NPI enumeration date
- April 7, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (970) 945-6535
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David Mitchell Marcus practices at Valley View Hospital in Glenwood Springs, Colorado
Dr. Marcus' primary practice is Valley View Hospital, at 1906 Blake Ave, Glenwood Springs, CO 81601 in Garfield County. The practice phone is (970) 945-6535.
- Valley View Hospital1906 Blake Ave, Glenwood Springs, CO 81601 · Garfield CountyPhone(970) 945-6535
Source: Dmand AI Affiliation Data
Dr. David Mitchell Marcus is affiliated with 3 sites of care and 2 medical groups
Dr. Marcus' primary practice is Valley View Hospital in Glenwood Springs, Colorado, part of Valley View Hospital Association. Dr. Marcus is also affiliated with Aspen Valley Health. The medical group on file is ValleyOrtho - Aspen. Dmand AI also links Dr. Marcus to 1 more group practice or clinic and 1 medical group, 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. David Mitchell Marcus' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Marcus practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Valley View Hospital | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David Mitchell Marcus is one of 102 radiation oncologists in Colorado
Radiation oncology is Dr. Marcus' primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dr. Marcus is licensed in Colorado.
Specialties and state licenses
- Radiation oncology, ColoradoPrimary
Radiation oncologists near Dr. Marcus
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. David Mitchell Marcus billed Medicare for 73 services in 2024
CMS data shows 73 Medicare services from Dr. Marcus across 2 procedure codes in 2024, for 81 Medicare patients. Medicare paid $2,721 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Marcus' Medicare services by type, 2022 to 2024
- 2022
- 2024
- Imaging
- 2022: 4392024: 6186%
- Office and hospital visits
- 2022: 862024: 1286%
- Other services
- 2022: 3232024: 0100%
Dr. Marcus compared with the Colorado median for radiation oncologists, 2024
- Dr. Marcus
- Colorado median
- Medicare services
- 73vs 1,13994% below
- Medicare patients
- 81vs 16150% below
- Part D claims
- 26vs 4238% below
Medians across 101 radiation oncologists in Colorado with Dmand AI profiles that report each measure.
Dr. Marcus' 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. David Mitchell Marcus treated 81 Medicare patients in 2024, average age 74
CMS counts 81 Medicare patients who saw Dr. Marcus in 2024. The largest group is 65 to 74, with 42 patients. 75% of them have cancer, and 54% have high cholesterol. Their average risk score is 1.19, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Marcus' median patient age at 73, with 20% women.
Dr. Marcus' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Marcus' Medicare patients by sex, 2024
- Women1721%
- Men6479%
Chronic conditions among Dr. Marcus' Medicare patients, 2024
- Cancer75%
- High cholesterol54%
- High blood pressure52%
- Arthritis46%
- Ischemic heart disease26%
- Atrial fibrillation17%
- Anxiety15%
Share of Medicare patients with each condition. A patient can have several.
Dr. Marcus' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women20%
- Men80%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David Mitchell Marcus wrote 21 Medicare Part D claims in 2024
In 2024, Dr. Marcus wrote 21 Medicare Part D claims for 16 patients. 81% of them were for generic drugs. They cover 1 drug, with $504 in total drug cost. In 2021, CMS named 47 claims across 3 drugs.
Dr. Marcus' Part D claims by kind of drug, 2024
- Generic17 claims81%
- Brand-name and other4 claims19%
Dr. Marcus' 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: 472022: 2645%
Drugs named by CMS: 1 in 2022, 3 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
Dr. David Mitchell Marcus offers telehealth to Medicare patients
Dr. Marcus accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Marcus as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. David Mitchell Marcus received $4,956 in industry payments from 2016 to 2025
CMS Open Payments shows 77 general payments to Dr. Marcus from 34 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 68% of the total. Vision RT LTD paid the most, $3,352.
General payments to Dr. Marcus by program year, 2016 to 2025
General payments to Dr. Marcus by kind, 2016 to 2025
- Speaker and faculty fees$3,35268%
- Food and beverage$1,59932%
- Education$60%
Companies that paid Dr. Marcus the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. David Mitchell Marcus graduated from Emory University School of Medicine
Dr. Marcus graduated from Emory University School of Medicine in 2009.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. David Mitchell Marcus'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. David Mitchell Marcus
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. David Mitchell Marcus' NPI number?
Dr. David Mitchell Marcus' NPI number is 1306089362. It was assigned on April 7, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. David Mitchell Marcus?
Dr. David Mitchell Marcus is a radiation oncologist in Glenwood Springs, Colorado. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).
Where does Dr. David Mitchell Marcus practice?
Dr. Marcus practices at 1906 Blake Ave, Glenwood Springs, CO 81601. Dr. Marcus' primary practice is Valley View Hospital in Glenwood Springs, Colorado, part of Valley View Hospital Association. Dmand AI also links Dr. Marcus to 1 group practice or clinic and 1 medical group.
What is Dr. David Mitchell Marcus' office phone number?
The practice phone on file for Dr. Marcus is (970) 945-6535.
What is Dr. David Mitchell Marcus' medical license number?
Dr. Marcus holds Colorado license DR.0015469.
Which hospitals is Dr. David Mitchell Marcus affiliated with?
Dr. Marcus practices at Valley View Hospital in Glenwood Springs, Colorado. Dr. Marcus is also affiliated with Aspen Valley Health.
What medical group is Dr. David Mitchell Marcus part of?
Dr. Marcus is linked to ValleyOrtho - Aspen. Dmand AI links Dr. Marcus to 1 more medical group.
Does Dr. David Mitchell Marcus accept Medicare?
Yes. CMS data shows Dr. Marcus billed Medicare for 73 services in 2024, and Dr. Marcus accepts Medicare assignment.
Does Dr. David Mitchell Marcus offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Marcus as offering telehealth services.
How many Medicare patients does Dr. David Mitchell Marcus see?
CMS counts 81 Medicare patients who saw Dr. Marcus in 2024, with an average age of 74.
Show 5 more questionsShow fewer questions
What services does Dr. David Mitchell Marcus bill to Medicare?
In 2024, Dr. Marcus' most billed Medicare services were radiation oncology (77014) and office visit, established patient (99213).
Where did Dr. David Mitchell Marcus go to medical school?
Dr. Marcus graduated from Emory University School of Medicine in 2009.
What drugs does Dr. David Mitchell Marcus prescribe most?
In 2022 Medicare Part D data, Dr. Marcus' most prescribed drugs by claims were Tamsulosin HCl.
Has Dr. David Mitchell Marcus received payments from drug or device companies?
CMS Open Payments shows $4,956 in general payments to Dr. Marcus from 34 companies from 2016 to 2025. The largest total came from Vision RT LTD.
How long has Dr. David Mitchell Marcus been practicing?
Dr. Marcus graduated from medical school in 2009, 17 years ago.
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