Dr. Mark Ward Keller, MD
- Medicare services, 2024
- 947
- Medicare patients, 2024
- 573
- Part D claims, 2024
- 2,175
- Publications
- 7
- Hospital affiliations
- 1
- Practice address
- 9548 Park Meadows Dr, Lone Tree, CO 80124
- Practice phone
- Call (720) 848-2200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Uchealth Lone Tree Medical Center
Lone Tree, Colorado
Find Dr. Keller'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. Mark Ward Keller is a cardiologist in Lone Tree, Colorado
Dr. Keller practices at Uchealth Lone Tree Medical Center in Lone Tree, Colorado.
Dr. Keller's NPI, 1720074578, was assigned on September 26, 2005. Dr. Keller graduated from University of Chicago, Pritzker School of Medicine in 1983. Dr. Keller holds Colorado license 31782.
- NPI
- 1720074578NPI Registry (opens in a new tab)
- NPI enumeration date
- September 26, 2005
- NPI status
- Active
- Practice phone
- (720) 848-2200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 69
- Medical school graduation
- 1983
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Mark Ward Keller practices at Uchealth Lone Tree Medical Center in Lone Tree, Colorado
Dr. Keller's primary practice is Uchealth Lone Tree Medical Center, at 9548 Park Meadows Dr, Lone Tree, CO 80124 in Douglas County. The practice phone is (720) 848-2200.
- Uchealth Lone Tree Medical Center9548 Park Meadows Dr, Lone Tree, CO 80124 · Douglas CountyPhone(720) 848-2200
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark Ward Keller is affiliated with 2 sites of care and 1 medical group
Dr. Keller's primary practice is Uchealth Lone Tree Medical Center in Lone Tree, Colorado. Dr. Keller is also affiliated with UCHealth University of Colorado Hospital. The medical group on file is University of Colorado Medicine (CU Medicine).
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark Ward Keller's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Keller practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Uchealth Lone Tree Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark Ward Keller is one of 300 cardiologists in Colorado
Cardiovascular disease is Dr. Keller's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Keller is licensed in Colorado.
Specialties and state licenses
- Cardiovascular disease, ColoradoPrimary
Cardiologists near Dr. Keller
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. Mark Ward Keller billed Medicare for 947 services in 2024
CMS data shows 947 Medicare services from Dr. Keller across 8 procedure codes in 2024, for 573 Medicare patients. Medicare paid $40,512 for them.
Dr. Keller's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 5282024: 5045%
- Office and hospital visits
- 2023: 6052024: 44327%
Where Dr. Keller's Medicare services took place, 2024
- In an office77882%
- In a facility16918%
Dr. Keller compared with the Colorado median for cardiologists, 2024
- Dr. Keller
- Colorado median
- Medicare services
- 947vs 1,36831% below
- Medicare patients
- 573vs 70819% below
- Part D claims
- 1,951vs 1,30050% above
Medians across 290 cardiologists in Colorado with Dmand AI profiles that report each measure.
Dr. Keller'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Keller and other cardiologists in Colorado.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark Ward Keller treated 573 Medicare patients in 2024, average age 76
CMS counts 573 Medicare patients who saw Dr. Keller in 2024. The largest group is 75 to 84, with 281 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 8% are also on Medicaid. Their average risk score is 1.61, 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. Keller's median patient age at 77, with 35% women.
Dr. Keller's Medicare patients by age, 2024
Dr. Keller's Medicare patients by sex, 2024
- Women24943%
- Men32457%
Chronic conditions among Dr. Keller's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis48%
- Ischemic heart disease46%
- Atrial fibrillation36%
- Chronic kidney disease35%
- Diabetes29%
- Heart failure29%
Share of Medicare patients with each condition. A patient can have several.
Dr. Keller's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women35%
- Men60%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark Ward Keller wrote 2,175 Medicare Part D claims in 2024
In 2024, Dr. Keller wrote 2,175 Medicare Part D claims for 289 patients. 87% of them were for generic drugs. CMS names the drug for 1,951 of them, across 38 drugs with 11 or more claims each, at $409,316 in total drug cost. In 2023, CMS named 1,986 claims across 37 drugs.
Dr. Keller's Part D claims by kind of drug, 2024
- Generic1,884 claims87%
- Brand-name291 claims13%
Dr. Keller'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. Keller's Part D claims, 2024
- Antibiotics1%11 of 2,175 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: 1,9862024: 1,9512%
Drugs named by CMS: 38 in 2024, 37 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
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Dr. Mark Ward Keller has 7 publications on record
Dmand AI links 7 papers to Dr. Keller, published from 2016 to 2018. Dr. Keller has published most often in Phys Rev Lett.
Dr. Keller's papers by year, 2016 to 2018
Recent publications by Dr. Keller
See who Dr. Keller researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Keller works with, so you can find a warm path to the right cardiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Mark Ward Keller received $307 in industry payments from 2018 to 2022
CMS Open Payments shows 10 general payments to Dr. Keller from 3 drug and device companies from 2018 to 2022. Food and beverage make up the largest share, 100% of the total. Boston Scientific Corporation paid the most, $272.
General payments to Dr. Keller by program year, 2018 to 2022
Companies that paid Dr. Keller the most, 2018 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark Ward Keller graduated from University of Chicago, Pritzker School of Medicine
Dr. Keller graduated from University of Chicago, Pritzker School of Medicine in 1983.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark Ward Keller'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 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Mark Ward Keller
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. Mark Ward Keller's NPI number?
Dr. Mark Ward Keller's NPI number is 1720074578. It was assigned on September 26, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Ward Keller?
Dr. Mark Ward Keller is a cardiologist in Lone Tree, Colorado. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. Mark Ward Keller practice?
Dr. Keller practices at 9548 Park Meadows Dr, Lone Tree, CO 80124. Dr. Keller's primary practice is Uchealth Lone Tree Medical Center in Lone Tree, Colorado.
What is Dr. Mark Ward Keller's office phone number?
The practice phone on file for Dr. Keller is (720) 848-2200.
What is Dr. Mark Ward Keller's medical license number?
Dr. Keller holds Colorado license 31782.
Which hospitals is Dr. Mark Ward Keller affiliated with?
Dr. Keller is affiliated with UCHealth University of Colorado Hospital.
What medical group is Dr. Mark Ward Keller part of?
Dr. Keller is linked to University of Colorado Medicine (CU Medicine).
Does Dr. Mark Ward Keller accept Medicare?
Yes. CMS data shows Dr. Keller billed Medicare for 947 services in 2024.
How many Medicare patients does Dr. Mark Ward Keller see?
CMS counts 573 Medicare patients who saw Dr. Keller in 2024, with an average age of 76.
What services does Dr. Mark Ward Keller bill to Medicare?
In 2024, Dr. Keller's most billed Medicare services were office visit, established patient (99213), heart test or procedure (93306) and heart test or procedure (93010).
Show 5 more questionsShow fewer questions
Where did Dr. Mark Ward Keller go to medical school?
Dr. Keller graduated from University of Chicago, Pritzker School of Medicine in 1983.
What drugs does Dr. Mark Ward Keller prescribe most?
In 2024 Medicare Part D data, Dr. Keller's most prescribed drugs by claims were Atorvastatin Calcium, Metoprolol Succinate and Eliquis.
Has Dr. Mark Ward Keller received payments from drug or device companies?
CMS Open Payments shows $307 in general payments to Dr. Keller from 3 companies from 2018 to 2022. The largest total came from Boston Scientific Corporation.
How long has Dr. Mark Ward Keller been practicing?
Dr. Keller graduated from medical school in 1983, 43 years ago.
Does Dr. Mark Ward Keller do research?
Dmand AI links 7 publications to Dr. Keller, published from 2016 to 2018.
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