Dr. Mark J. Vellek, MD
- Medicare services, 2024
- 1,134
- Medicare patients, 2024
- 412
- Part D claims, 2024
- 981
- Hospital affiliations
- 3
- Industry payments
- $7,156
- Practice address
- 803 Poplar Street, Murray, KY 42071
- Practice phone
- Call (270) 762-1100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Vellek'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 J. Vellek is a hematologist and oncologist in Murray, Kentucky
Dr. Vellek practices at Murray-Calloway County Hospital in Murray, Kentucky, part of Murray-Calloway County Hospital.
Dr. Vellek's NPI, 1063409688, was assigned on September 29, 2005. Dr. Vellek graduated from University of Minnesota Medical School in 1986. Dr. Vellek holds Nevada license 20944.
- NPI
- 1063409688NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9335166776
- NPI enumeration date
- September 29, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (270) 762-1100
- 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. Mark J. Vellek practices at Murray-Calloway County Hospital in Murray, Kentucky
Dr. Vellek's primary practice is Murray-Calloway County Hospital, at 803 Poplar Street, Murray, KY 42071 in Calloway County. The practice phone is (270) 762-1100.
- Murray-Calloway County Hospital803 Poplar Street, Murray, KY 42071 · Calloway CountyPhone(270) 762-1100
Source: Dmand AI Affiliation Data
Dr. Mark J. Vellek is affiliated with 4 sites of care and 2 medical groups
Dr. Vellek's primary practice is Murray-Calloway County Hospital in Murray, Kentucky, part of Murray-Calloway County Hospital. Dr. Vellek is also affiliated with Carson Tahoe Regional Medical Center. The medical group on file is Intermountain Health. Dmand AI also links Dr. Vellek to 1 more hospital, 1 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. Mark J. Vellek's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Vellek practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Murray-Calloway County Hospital | Available with a free account |
| +3 more sites and 1 medical group | 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 Murray-Calloway County Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Mark J. Vellek is one of 150 hematologists and oncologists in Kentucky
Hematology and oncology is Dr. Vellek's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dmand AI has Dr. Vellek's licenses on file in 3 states: Nevada, Kentucky and Missouri.
Specialties and state licenses
- Hematology and oncology, NevadaPrimary
- Kentucky license
- Missouri license
Hematologists and oncologists near Dr. Vellek
Counts of hematologists and 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. Mark J. Vellek billed Medicare for 1,134 services in 2024
CMS data shows 1,134 Medicare services from Dr. Vellek across 6 procedure codes in 2024, for 412 Medicare patients. Medicare paid $78,172 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Vellek's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3972024: 1,081172%
- Other services
- 2023: 02024: 53
Dr. Vellek compared with the Kentucky median for hematologists and oncologists, 2024
- Dr. Vellek
- Kentucky median
- Medicare services
- 1,134vs 87130% above
- Medicare patients
- 412vs 27450% above
- Part D claims
- 782vs 8326% below
Medians across 145 hematologists and oncologists in Kentucky with Dmand AI profiles that report each measure.
Dr. Vellek'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. Vellek?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Vellek and other hematologists and oncologists in Kentucky.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark J. Vellek treated 412 Medicare patients in 2024, average age 74
CMS counts 412 Medicare patients who saw Dr. Vellek in 2024. The largest group is 65 to 74, with 182 patients. 75% of them have high blood pressure, and 70% have high cholesterol. 8% are also on Medicaid. Their average risk score is 1.99, 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. Vellek's median patient age at 76, with 55% women.
Dr. Vellek's Medicare patients by age, 2024
Dr. Vellek's Medicare patients by sex, 2024
- Women22254%
- Men19046%
Chronic conditions among Dr. Vellek's Medicare patients, 2024
- High blood pressure75%
- High cholesterol70%
- Cancer51%
- Arthritis45%
- Chronic kidney disease40%
- Diabetes37%
- Ischemic heart disease33%
- Anxiety31%
Share of Medicare patients with each condition. A patient can have several.
Dr. Vellek's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark J. Vellek wrote 981 Medicare Part D claims in 2024
In 2024, Dr. Vellek wrote 981 Medicare Part D claims for 220 patients. 79% of them were for generic drugs. CMS names the drug for 782 of them, across 24 drugs with 11 or more claims each, at $2,044,538 in total drug cost. In 2023, CMS named 329 claims across 9 drugs.
Dr. Vellek's Part D claims by kind of drug, 2024
- Generic776 claims79%
- Brand-name205 claims21%
Dr. Vellek'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. Vellek's Part D claims, 2024
- Opioids9%86 of 981 claims
- Antibiotics2%22 of 981 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: 3292024: 782138%
Drugs named by CMS: 24 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. Mark J. Vellek takes part in Medicare
Dr. Vellek 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. Mark J. Vellek received $7,156 in industry payments from 2016 to 2025
CMS Open Payments shows 384 general payments to Dr. Vellek from 57 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 90% of the total. Genentech, Inc. paid the most, $751.
General payments to Dr. Vellek by program year, 2016 to 2025
General payments to Dr. Vellek by kind, 2016 to 2025
- Food and beverage$6,46290%
- Speaker and faculty fees$5007%
- Education$1943%
Companies that paid Dr. Vellek 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. Mark J. Vellek graduated from University of Minnesota Medical School
Dr. Vellek graduated from University of Minnesota Medical School in 1986.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark J. Vellek'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. Mark J. Vellek
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 J. Vellek's NPI number?
Dr. Mark J. Vellek's NPI number is 1063409688. It was assigned on September 29, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark J. Vellek?
Dr. Mark J. Vellek is a hematologist and oncologist in Murray, Kentucky. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Mark J. Vellek practice?
Dr. Vellek practices at 803 Poplar Street, Murray, KY 42071. Dr. Vellek's primary practice is Murray-Calloway County Hospital in Murray, Kentucky, part of Murray-Calloway County Hospital. Dmand AI also links Dr. Vellek to 1 hospital, 1 group practice or clinic and 1 medical group.
What is Dr. Mark J. Vellek's office phone number?
The practice phone on file for Dr. Vellek is (270) 762-1100.
What is Dr. Mark J. Vellek's medical license number?
Dr. Vellek holds Nevada license 20944, one of the licenses on file in 3 states.
Which states has Dr. Mark J. Vellek been licensed in?
Dmand AI has state licenses on file for Dr. Vellek in Nevada, Kentucky and Missouri.
Which hospitals is Dr. Mark J. Vellek affiliated with?
Dr. Vellek practices at Murray-Calloway County Hospital in Murray, Kentucky. Dr. Vellek is also affiliated with Carson Tahoe Regional Medical Center. Dmand AI links Dr. Vellek to 1 more hospital.
What medical group is Dr. Mark J. Vellek part of?
Dr. Vellek is linked to Intermountain Health. Dmand AI links Dr. Vellek to 1 more medical group.
Does Dr. Mark J. Vellek accept Medicare?
Yes. CMS data shows Dr. Vellek billed Medicare for 1,134 services in 2024, and Dr. Vellek accepts Medicare assignment.
How many Medicare patients does Dr. Mark J. Vellek see?
CMS counts 412 Medicare patients who saw Dr. Vellek in 2024, with an average age of 74.
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What services does Dr. Mark J. Vellek bill to Medicare?
In 2024, Dr. Vellek's most billed Medicare services were office visit, established patient (99214), office visit, new patient (99204) and medicare service (G2211).
Where did Dr. Mark J. Vellek go to medical school?
Dr. Vellek graduated from University of Minnesota Medical School in 1986.
What drugs does Dr. Mark J. Vellek prescribe most?
In 2024 Medicare Part D data, Dr. Vellek's most prescribed drugs by claims were Anastrozole, Prochlorperazine Maleate and Dexamethasone.
Has Dr. Mark J. Vellek received payments from drug or device companies?
CMS Open Payments shows $7,156 in general payments to Dr. Vellek from 57 companies from 2016 to 2025. The largest total came from Genentech, Inc.
How long has Dr. Mark J. Vellek been practicing?
Dr. Vellek graduated from medical school in 1986, 40 years ago.
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