Dr. Marc Douglas Knepp, MD
- Medicare services, 2024
- 154
- Medicare patients, 2024
- 51
- Part D claims, 2024
- 521
- Publications
- 4
- Hospital affiliations
- 3
- Practice address
- 601 Hospital Dr, Maquoketa, IA 52060
- Practice phone
- Call (563) 652-2474
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Jackson County Regional Health Center
Maquoketa, Iowa
Find Dr. Knepp'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. Marc Douglas Knepp is a pediatric cardiology physician in Maquoketa, Iowa
Dr. Knepp practices at Jackson County Regional Health Center in Maquoketa, Iowa.
Dr. Knepp's NPI, 1568686277, was assigned on April 12, 2007. Dr. Knepp holds Illinois license 036-129846.
- NPI
- 1568686277NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0446421960
- NPI enumeration date
- April 12, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (563) 652-2474
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marc Douglas Knepp practices at Jackson County Regional Health Center in Maquoketa, Iowa
Dr. Knepp's primary practice is Jackson County Regional Health Center, at 601 Hospital Dr, Maquoketa, IA 52060 in Jackson County. The practice phone is (563) 652-2474.
- Jackson County Regional Health Center601 Hospital Dr, Maquoketa, IA 52060 · Jackson CountyPhone(563) 652-2474
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Marc Douglas Knepp is affiliated with 8 sites of care and 6 medical groups
Dr. Knepp's primary practice is Jackson County Regional Health Center in Maquoketa, Iowa. Dr. Knepp is also affiliated with OSF Saint Francis Medical Center. The medical group on file is OSF Multi-Specialty Group. Dmand AI also links Dr. Knepp to 2 more hospitals, 5 medical groups and 4 group practices and clinics, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Marc Douglas Knepp's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Knepp practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Jackson County Regional Health Center | Available with a free account |
| +7 more sites and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Marc Douglas Knepp is one of 25 pediatric cardiology physicians in Iowa
Pediatric cardiology is Dr. Knepp's primary specialty in the NPI Registry, under taxonomy code 2080P0202X. Dmand AI has Dr. Knepp's licenses on file in 2 states: Illinois and Michigan.
Specialties and state licenses
- Pediatric cardiology, IllinoisPrimary
- Student in an organized health care education/training program, Michigan
Pediatric cardiology physicians near Dr. Knepp
Counts of pediatric cardiology physicians 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. Marc Douglas Knepp billed Medicare for 154 services in 2024
CMS data shows 154 Medicare services from Dr. Knepp across 6 procedure codes in 2024, for 51 Medicare patients. Medicare paid $3,375 for them.
Dr. Knepp's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 1592024: 13118%
- Office and hospital visits
- 2023: 402024: 2343%
Where Dr. Knepp's Medicare services took place, 2024
- In an office2013%
- In a facility13487%
Dr. Knepp compared with the Iowa median for pediatric cardiology physicians, 2024
- Dr. Knepp
- Iowa median
- Part D claims
- 456vs 1726.8 times
Medians across 16 pediatric cardiology physicians in Iowa with Dmand AI profiles that report each measure.
Dr. Knepp'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. Knepp and other pediatric cardiology physicians in Iowa.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Marc Douglas Knepp treated 51 Medicare patients in 2024, average age 50
CMS counts 51 Medicare patients who saw Dr. Knepp in 2024. The largest group is under 65, with 34 patients. 53% of them have high blood pressure, and 51% have high cholesterol. 59% are also on Medicaid. Their average risk score is 1.37, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Knepp's median patient age at 19, with 54% women.
Dr. Knepp's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Knepp's Medicare patients by sex, 2024
- Women2651%
- Men2549%
Chronic conditions among Dr. Knepp's Medicare patients, 2024
- High blood pressure53%
- High cholesterol51%
- Heart failure43%
- Atrial fibrillation27%
- Anxiety25%
- Chronic kidney disease25%
- Mood disorders25%
- Diabetes22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Knepp's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 19
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Marc Douglas Knepp wrote 521 Medicare Part D claims in 2024
In 2024, Dr. Knepp wrote 521 Medicare Part D claims for 57 patients. 82% of them were for generic drugs. CMS names the drug for 456 of them, across 20 drugs with 11 or more claims each, at $411,230 in total drug cost. In 2023, CMS named 315 claims across 13 drugs.
Dr. Knepp's Part D claims by kind of drug, 2024
- Generic426 claims82%
- Brand-name95 claims18%
Dr. Knepp'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3152024: 45645%
Drugs named by CMS: 20 in 2024, 13 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. Marc Douglas Knepp takes part in Medicare
Dr. Knepp 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. Marc Douglas Knepp has 4 publications on record
Dmand AI links 4 papers to Dr. Knepp, published from 2011 to 2022. Dr. Knepp's most frequent co-authors are Sudhir Mungee, MD, Timir Sudhaker Baman, MD and Marco A. Barzallo, MD.
Dr. Knepp's papers by year, 2011 to 2022
Dr. Knepp's most frequent co-authors
- Sudhir Mungee, MD2 shared papers
- Timir Sudhaker Baman, MD1 shared paper
- Marco A. Barzallo, MD1 shared paper
Recent publications by Dr. Knepp
See who Dr. Knepp researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Knepp works with, so you can find a warm path to the right pediatric cardiology physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Marc Douglas Knepp received $1,405 in industry payments from 2016 to 2025
CMS Open Payments shows 18 general payments to Dr. Knepp from 5 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Abbott Laboratories paid the most, $1,255.
General payments to Dr. Knepp by program year, 2016 to 2025
Companies that paid Dr. Knepp the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Marc Douglas Knepp'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) |
| 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) |
| 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. Marc Douglas Knepp
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. Marc Douglas Knepp's NPI number?
Dr. Marc Douglas Knepp's NPI number is 1568686277. It was assigned on April 12, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Marc Douglas Knepp?
Dr. Marc Douglas Knepp is a pediatric cardiology physician in Maquoketa, Iowa. The primary specialty in the NPI Registry is Pediatric Cardiology Physician (taxonomy code 2080P0202X).
Where does Dr. Marc Douglas Knepp practice?
Dr. Knepp practices at 601 Hospital Dr, Maquoketa, IA 52060. Dr. Knepp's primary practice is Jackson County Regional Health Center in Maquoketa, Iowa. Dmand AI also links Dr. Knepp to 2 hospitals, 5 medical groups and 4 group practices and clinics.
What is Dr. Marc Douglas Knepp's office phone number?
The practice phone on file for Dr. Knepp is (563) 652-2474.
What is Dr. Marc Douglas Knepp's medical license number?
Dr. Knepp holds Illinois license 036-129846, one of the licenses on file in 2 states.
Which states has Dr. Marc Douglas Knepp been licensed in?
Dmand AI has state licenses on file for Dr. Knepp in Illinois and Michigan.
Which hospitals is Dr. Marc Douglas Knepp affiliated with?
Dr. Knepp is affiliated with OSF Saint Francis Medical Center. Dmand AI links Dr. Knepp to 2 more hospitals.
What medical group is Dr. Marc Douglas Knepp part of?
Dr. Knepp is linked to OSF Multi-Specialty Group. Dmand AI links Dr. Knepp to 5 more medical groups.
Does Dr. Marc Douglas Knepp accept Medicare?
Yes. CMS data shows Dr. Knepp billed Medicare for 154 services in 2024, and Dr. Knepp accepts Medicare assignment.
How many Medicare patients does Dr. Marc Douglas Knepp see?
CMS counts 51 Medicare patients who saw Dr. Knepp in 2024, with an average age of 50.
Show 6 more questionsShow fewer questions
What services does Dr. Marc Douglas Knepp bill to Medicare?
In 2024, Dr. Knepp's most billed Medicare services were heart test or procedure (93010), heart test or procedure (93325) and heart test or procedure (93303).
What drugs does Dr. Marc Douglas Knepp prescribe most?
In 2024 Medicare Part D data, Dr. Knepp's most prescribed drugs by claims were Furosemide, Warfarin Sodium and Sotalol.
Has Dr. Marc Douglas Knepp received payments from drug or device companies?
CMS Open Payments shows $1,405 in general payments to Dr. Knepp from 5 companies from 2016 to 2025. The largest total came from Abbott Laboratories.
How long has Dr. Marc Douglas Knepp been practicing?
Dr. Knepp graduated from medical school in 2004, 22 years ago.
Does Dr. Marc Douglas Knepp do research?
Dmand AI links 4 publications to Dr. Knepp, published from 2011 to 2022.
Who does Dr. Marc Douglas Knepp publish with?
Dr. Knepp's most frequent co-authors are Sudhir Mungee, MD (2 shared papers), Timir Sudhaker Baman, MD (1 shared paper) and Marco A. Barzallo, MD (1 shared paper).
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