J Trauma Acute Care Surg
Abdominal InjuriesColonColonic Diseases
Dr. Mark Stephen Iltis, DO
NPI1952789430PAC ID5092028951
- Medicare services, 2024
- 662
- Medicare patients, 2024
- 266
- Part D claims, 2024
- 180
- Publications
- 1
- MIPS score, 2024
- 84
- Practice address
- 1401 Harrodsburg Rd, Lexington, KY 40504
- Practice phone
- Call (859) 278-4960
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Fayette Surgical Associates
Lexington, Kentucky
Find Dr. Iltis' 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 Stephen Iltis is a vascular surgeon in Lexington, Kentucky
Dr. Iltis practices at Fayette Surgical Associates in Lexington, Kentucky.
Dr. Iltis' NPI, 1952789430, was assigned on May 15, 2015. Dr. Iltis graduated from Nova Southeastern College of Osteo Medicine in 2015. Dr. Iltis holds Kentucky license 05248.
NPI and contact details
- NPI
- 1952789430NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5092028951
- NPI enumeration date
- May 15, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (859) 278-4960
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark Stephen Iltis practices at Fayette Surgical Associates in Lexington, Kentucky
Dr. Iltis' primary practice is Fayette Surgical Associates, at 1401 Harrodsburg Rd, Lexington, KY 40504 in Fayette County. The practice phone is (859) 278-4960.
- Fayette Surgical Associates1401 Harrodsburg Rd, Lexington, KY 40504 · Fayette CountyPhone(859) 278-4960
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark Stephen Iltis is affiliated with 4 sites of care and 1 medical group
Dr. Iltis' primary practice is Fayette Surgical Associates in Lexington, Kentucky. Dr. Iltis is also affiliated with Baptist Health Lexington. The medical group on file is Fayette Surgical Associates. Dmand AI also links Dr. Iltis to 1 more hospital and 1 group practice or clinic, each named with a free account.
Fayette Surgical AssociatesPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mark Stephen Iltis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Iltis practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Fayette Surgical Associates | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every site where Dr. Iltis practices
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Mark Stephen Iltis is one of 75 vascular surgeons in Kentucky
Vascular surgery is Dr. Iltis' primary specialty in the NPI Registry, under taxonomy code 2086S0129X. Dr. Iltis is licensed in Kentucky.
Specialties and state licenses
- Vascular surgery, KentuckyPrimary
Vascular surgeons near Dr. Iltis
Counts of vascular surgeons 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 Stephen Iltis billed Medicare for 662 services in 2024
CMS data shows 662 Medicare services from Dr. Iltis across 15 procedure codes in 2024, for 266 Medicare patients. Medicare paid $46,939 for them.
Medicare services, 2024662
Medicare patients266
Paid by Medicare$46,939
Procedure codes15
Dr. Iltis' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 2232024: 36965%
- Office and hospital visits
- 2023: 2912024: 2823%
- Surgery
- 2023: 112024: 11No change
- Imaging
- 2023: 212024: 0100%
Where Dr. Iltis' Medicare services took place, 2024
- In an office49475%
- In a facility16825%
Dr. Iltis compared with the Kentucky median for vascular surgeons, 2024
- Dr. Iltis
- Kentucky median
- Medicare services
- 662vs 688Close to median
- Medicare patients
- 266vs 38230% below
- Part D claims
- 129vs 125Close to median
Medians across 72 vascular surgeons in Kentucky with Dmand AI profiles that report each measure.
Dr. Iltis' 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. Iltis?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Iltis and other vascular surgeons in Kentucky.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark Stephen Iltis treated 266 Medicare patients in 2024, average age 75
CMS counts 266 Medicare patients who saw Dr. Iltis in 2024. The largest group is 65 to 74, with 113 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 23% are also on Medicaid. Their average risk score is 2.16, 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. Iltis' median patient age at 67, with 50% women.
Medicare patients, 2024266
Average age75
Average risk score2.16
Also on Medicaid23%
Dr. Iltis' Medicare patients by age, 2024
Dr. Iltis' Medicare patients by sex, 2024
- Women13752%
- Men12948%
Chronic conditions among Dr. Iltis' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis63%
- Ischemic heart disease49%
- Diabetes48%
- Chronic kidney disease42%
- Heart failure38%
- Anxiety33%
Share of Medicare patients with each condition. A patient can have several.
Dr. Iltis' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women50%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark Stephen Iltis wrote 180 Medicare Part D claims in 2024
In 2024, Dr. Iltis wrote 180 Medicare Part D claims for 72 patients. 73% of them were for generic drugs. CMS names the drug for 129 of them, across 4 drugs with 11 or more claims each, at $34,978 in total drug cost. In 2023, CMS named 103 claims across 5 drugs.
Part D claims, 2024180
Drugs named by CMS4
Total drug cost$34,978
Part D patients72
Dr. Iltis' Part D claims by kind of drug, 2024
- Generic131 claims73%
- Brand-name49 claims27%
Dr. Iltis' 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. Iltis' Part D claims, 2024
- Opioids11%19 of 180 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: 1032024: 12925%
Drugs named by CMS: 4 in 2024, 5 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
Dr. Mark Stephen Iltis scored 84 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Iltis for performance year 2024, reported as part of a group. Dr. Iltis accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 31 procedures of leg revascularization (restoring blood flow) by Dr. Iltis, more than 89% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Iltis' MIPS scores, performance year 2024
- 84of 100Final score
- 73.8of 100Quality
- 40of 100Improvement Activities
- 65of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Iltis ranks in Medicare procedure volume
- Varicose vein removal
- 70th percentile39 procedures
- Leg revascularization (restoring blood flow)
- 89th percentile31 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
For MedTech and pharma teams
Find vascular surgeons like Dr. Iltis by procedure volume and prescribing
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Mark Stephen Iltis has 1 publication on record
Dmand AI links 1 paper to Dr. Iltis. Dr. Iltis' most frequent co-authors are Rishi R. Chaudhuri, MD and Martin Croce, MD.
Papers1
Dr. Iltis' most frequent co-authors
Recent publications by Dr. Iltis
See who Dr. Iltis researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Iltis works with, so you can find a warm path to the right vascular surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Mark Stephen Iltis received $22,037 in industry payments from 2022 to 2025
CMS Open Payments shows 230 general payments to Dr. Iltis from 31 drug and device companies from 2022 to 2025. Food and beverage make up the largest share, 60% of the total. Penumbra, Inc. paid the most, $4,320.
General payments to Dr. Iltis by program year, 2022 to 2025
General payments to Dr. Iltis by kind, 2022 to 2025
$22Kin total
- Food and beverage$13,29860%
- Travel and lodging$8,73940%
Companies that paid Dr. Iltis the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark Stephen Iltis graduated from Nova Southeastern College of Osteo Medicine
Dr. Iltis graduated from Nova Southeastern College of Osteo Medicine in 2015.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark Stephen Iltis'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 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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 Stephen Iltis
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 Stephen Iltis' NPI number?
Dr. Mark Stephen Iltis' NPI number is 1952789430. It was assigned on May 15, 2015, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Stephen Iltis?
Dr. Mark Stephen Iltis is a vascular surgeon in Lexington, Kentucky. The primary specialty in the NPI Registry is Vascular Surgery Physician (taxonomy code 2086S0129X).
Where does Dr. Mark Stephen Iltis practice?
Dr. Iltis practices at 1401 Harrodsburg Rd, Lexington, KY 40504. Dr. Iltis' primary practice is Fayette Surgical Associates in Lexington, Kentucky. Dmand AI also links Dr. Iltis to 1 hospital and 1 group practice or clinic.
What is Dr. Mark Stephen Iltis' office phone number?
The practice phone on file for Dr. Iltis is (859) 278-4960.
What is Dr. Mark Stephen Iltis' medical license number?
Dr. Iltis holds Kentucky license 05248.
Which hospitals is Dr. Mark Stephen Iltis affiliated with?
Dr. Iltis is affiliated with Baptist Health Lexington. Dmand AI links Dr. Iltis to 1 more hospital.
What medical group is Dr. Mark Stephen Iltis part of?
Dr. Iltis is linked to Fayette Surgical Associates.
Does Dr. Mark Stephen Iltis accept Medicare?
Yes. CMS data shows Dr. Iltis billed Medicare for 662 services in 2024, and Dr. Iltis accepts Medicare assignment.
What is Dr. Mark Stephen Iltis' MIPS score?
Dr. Iltis' MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.
How many Medicare patients does Dr. Mark Stephen Iltis see?
CMS counts 266 Medicare patients who saw Dr. Iltis in 2024, with an average age of 75.
Show 7 more questionsShow fewer questions
What services does Dr. Mark Stephen Iltis bill to Medicare?
In 2024, Dr. Iltis' most billed Medicare services were blood vessel study (93922), office visit, established patient (99214) and special service (99153).
Where did Dr. Mark Stephen Iltis go to medical school?
Dr. Iltis graduated from Nova Southeastern College of Osteo Medicine in 2015.
What drugs does Dr. Mark Stephen Iltis prescribe most?
In 2024 Medicare Part D data, Dr. Iltis' most prescribed drugs by claims were Clopidogrel, Xarelto and Cilostazol.
Has Dr. Mark Stephen Iltis received payments from drug or device companies?
CMS Open Payments shows $22,037 in general payments to Dr. Iltis from 31 companies from 2022 to 2025. The largest total came from Penumbra, Inc.
How long has Dr. Mark Stephen Iltis been practicing?
Dr. Iltis graduated from medical school in 2015, 11 years ago.
Does Dr. Mark Stephen Iltis do research?
Dmand AI links 1 publication to Dr. Iltis.
Who does Dr. Mark Stephen Iltis publish with?
Dr. Iltis' most frequent co-authors are Rishi R. Chaudhuri, MD (1 shared paper) and Martin Croce, MD (1 shared paper).
Selling to vascular surgery practices?
See vascular surgeons in Kentucky 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