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Dr. Mark Randall Jennings, MD
NPI1003915539PAC ID3678678505
- Medicare services, 2024
- 333
- Medicare patients, 2024
- 196
- Part D claims, 2024
- 264
- Publications
- 1
- Hospital affiliations
- 2
- Practice address
- 2015 Jackson St, Anderson, IN 46016
- Practice phone
- Call (765) 649-2511
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Jennings' professional email, personal email and mobile number
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Dr. Mark Randall Jennings is an internist in Anderson, Indiana
Dr. Jennings practices at Ascension St. Vincent Anderson in Anderson, Indiana, part of Ascension Health Alliance.
Dr. Jennings' NPI, 1003915539, was assigned on September 21, 2006. Dr. Jennings graduated from Indiana University School of Medicine in 1988. Dr. Jennings holds Indiana license 01037730.
NPI and contact details
- NPI
- 1003915539NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3678678505
- NPI enumeration date
- September 21, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (765) 649-2511
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark Randall Jennings practices at Ascension St. Vincent Anderson in Anderson, Indiana
Dr. Jennings' primary practice is Ascension St. Vincent Anderson, at 2015 Jackson St, Anderson, IN 46016 in Madison County. The practice phone is (765) 649-2511.
- Ascension St. Vincent Anderson2015 Jackson St, Anderson, IN 46016 · Madison CountyPhone(765) 649-2511
Source: Dmand AI Affiliation Data
Dr. Mark Randall Jennings is affiliated with 3 sites of care and 2 medical groups
Dr. Jennings' primary practice is Ascension St. Vincent Anderson in Anderson, Indiana, part of Ascension Health Alliance. Dr. Jennings is also affiliated with Ascension St. Vincent Kokomo. The medical group on file is Ascension Medical Group St Vincent. Dmand AI also links Dr. Jennings to 1 more clinical lab and 1 medical group, each named with a free account.
Ascension St. Vincent KokomoAscension Medical Group St Vincent1 clinical labName with a free account1 medical groupName with a free account
See all 5 affiliations for Dr. JenningsSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark Randall Jennings' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Jennings practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ascension St. Vincent Anderson | 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. Mark Randall Jennings is one of 1,987 internists in Indiana
Internal medicine is Dr. Jennings' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Jennings is licensed in Indiana.
Specialties and state licenses
- Internal medicine, IndianaPrimary
Internists near Dr. Jennings
Counts of internists 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 Randall Jennings billed Medicare for 333 services in 2024
CMS data shows 333 Medicare services from Dr. Jennings across 5 procedure codes in 2024, for 196 Medicare patients. Medicare paid $26,128 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024333
Medicare patients196
Paid by Medicare$26,128
Procedure codes5
Dr. Jennings' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6482024: 33349%
Dr. Jennings compared with the Indiana median for internists, 2024
- Dr. Jennings
- Indiana median
- Medicare services
- 333vs 52036% below
- Medicare patients
- 196vs 2128% below
- Part D claims
- 36vs 15977% below
Medians across 1,948 internists in Indiana with Dmand AI profiles that report each measure.
Dr. Jennings' 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. Jennings?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Jennings and other internists in Indiana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark Randall Jennings treated 196 Medicare patients in 2024, average age 75
CMS counts 196 Medicare patients who saw Dr. Jennings in 2024. The largest group is 65 to 74, with 68 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 28% are also on Medicaid. Their average risk score is 2.12, 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. Jennings' median patient age at 73, with 54% women.
Medicare patients, 2024196
Average age75
Average risk score2.12
Also on Medicaid28%
Dr. Jennings' Medicare patients by age, 2024
Dr. Jennings' Medicare patients by sex, 2024
- Women10252%
- Men9448%
Chronic conditions among Dr. Jennings' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis52%
- Mood disorders48%
- Depression46%
- Ischemic heart disease46%
- Anxiety45%
- COPD43%
Share of Medicare patients with each condition. A patient can have several.
Dr. Jennings' 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
- Women54%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark Randall Jennings wrote 264 Medicare Part D claims in 2024
In 2024, Dr. Jennings wrote 264 Medicare Part D claims for 67 patients. 79% of them were for generic drugs. CMS names the drug for 36 of them, across 2 drugs with 11 or more claims each, at $11,514 in total drug cost. In 2023, CMS named 248 claims across 13 drugs.
Part D claims, 2024264
Drugs named by CMS2
Total drug cost$11,514
Part D patients67
Dr. Jennings' Part D claims by kind of drug, 2024
- Generic208 claims79%
- Brand-name and other56 claims21%
Dr. Jennings' 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. Jennings' Part D claims, 2024
- Opioids5%13 of 264 claims
- Antibiotics15%39 of 264 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: 2482024: 3685%
Drugs named by CMS: 2 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
Dr. Mark Randall Jennings offers telehealth to Medicare patients
Dr. Jennings accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Jennings as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Mark Randall Jennings has 1 publication on record
Dmand AI links 1 paper to Dr. Jennings in 2024. Dr. Jennings' most frequent co-author is Mark Oliver Jennings, MD.
Papers1
Dr. Jennings' most frequent co-authors
Recent publications by Dr. Jennings
See who Dr. Jennings researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Jennings works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Mark Randall Jennings received $3,258 in industry payments from 2016 to 2022
CMS Open Payments shows 282 general payments to Dr. Jennings from 27 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 100% of the total. Pfizer Inc. paid the most, $931.
General payments to Dr. Jennings by program year, 2016 to 2022
Companies that paid Dr. Jennings the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark Randall Jennings graduated from Indiana University School of Medicine
Dr. Jennings graduated from Indiana University School of Medicine in 1988.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark Randall Jennings'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) |
| 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 Randall Jennings
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 Randall Jennings' NPI number?
Dr. Mark Randall Jennings' NPI number is 1003915539. It was assigned on September 21, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Randall Jennings?
Dr. Mark Randall Jennings is an internist in Anderson, Indiana. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mark Randall Jennings practice?
Dr. Jennings practices at 2015 Jackson St, Anderson, IN 46016. Dr. Jennings' primary practice is Ascension St. Vincent Anderson in Anderson, Indiana, part of Ascension Health Alliance. Dmand AI also links Dr. Jennings to 1 clinical lab and 1 medical group.
What is Dr. Mark Randall Jennings' office phone number?
The practice phone on file for Dr. Jennings is (765) 649-2511.
What is Dr. Mark Randall Jennings' medical license number?
Dr. Jennings holds Indiana license 01037730.
Which hospitals is Dr. Mark Randall Jennings affiliated with?
Dr. Jennings practices at Ascension St. Vincent Anderson in Anderson, Indiana. Dr. Jennings is also affiliated with Ascension St. Vincent Kokomo.
What medical group is Dr. Mark Randall Jennings part of?
Dr. Jennings is linked to Ascension Medical Group St Vincent. Dmand AI links Dr. Jennings to 1 more medical group.
Does Dr. Mark Randall Jennings accept Medicare?
Yes. CMS data shows Dr. Jennings billed Medicare for 333 services in 2024, and Dr. Jennings accepts Medicare assignment.
Does Dr. Mark Randall Jennings offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Jennings as offering telehealth services.
How many Medicare patients does Dr. Mark Randall Jennings see?
CMS counts 196 Medicare patients who saw Dr. Jennings in 2024, with an average age of 75.
Show 7 more questionsShow fewer questions
What services does Dr. Mark Randall Jennings bill to Medicare?
In 2024, Dr. Jennings' most billed Medicare services were hospital inpatient care (99222), hospital inpatient care (99232) and hospital inpatient care (99223).
Where did Dr. Mark Randall Jennings go to medical school?
Dr. Jennings graduated from Indiana University School of Medicine in 1988.
What drugs does Dr. Mark Randall Jennings prescribe most?
In 2024 Medicare Part D data, Dr. Jennings' most prescribed drugs by claims were Eliquis and Cefuroxime.
Has Dr. Mark Randall Jennings received payments from drug or device companies?
CMS Open Payments shows $3,258 in general payments to Dr. Jennings from 27 companies from 2016 to 2022. The largest total came from Pfizer Inc.
How long has Dr. Mark Randall Jennings been practicing?
Dr. Jennings graduated from medical school in 1988, 38 years ago.
Does Dr. Mark Randall Jennings do research?
Dmand AI links 1 publication to Dr. Jennings.
Who does Dr. Mark Randall Jennings publish with?
Dr. Jennings' most frequent co-authors are Mark Oliver Jennings, MD (1 shared paper).
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