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Dr. Mark William Keenan, MD
NPI1932199742PAC ID7416855341
- Medicare services, 2024
- 3,355
- Medicare patients, 2024
- 2,415
- Publications
- 2
- Hospital affiliations
- 6
- Industry payments
- $590
- Practice address
- 777 Hemlock Street, Macon, GA 31201
- Practice phone
- Call (478) 633-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Keenan'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 William Keenan is a diagnostic radiologist in Macon, Georgia
Dr. Keenan practices at Atrium Health Navicent The Medical Center in Macon, Georgia, part of Advocate Health.
Dr. Keenan's NPI, 1932199742, was assigned on October 24, 2005. Dr. Keenan graduated from University of Maryland School of Medicine in 1993. Dr. Keenan holds Georgia license 40436.
NPI and contact details
- NPI
- 1932199742NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7416855341
- NPI enumeration date
- October 24, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (478) 633-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 59
- Medical school graduation
- 1993
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark William Keenan practices at Atrium Health Navicent the Medical Center in Macon, Georgia
Dr. Keenan's primary practice is Atrium Health Navicent the Medical Center, at 777 Hemlock Street, Macon, GA 31201 in Bibb County. The practice phone is (478) 633-1000.
- Atrium Health Navicent the Medical Center777 Hemlock Street, Macon, GA 31201 · Bibb CountyPhone(478) 633-1000
Source: Dmand AI Affiliation Data
Dr. Mark William Keenan is affiliated with 9 sites of care and 3 medical groups
Dr. Keenan's primary practice is Atrium Health Navicent The Medical Center in Macon, Georgia, part of Advocate Health. Dr. Keenan is also affiliated with Piedmont Macon Medical Center. The medical group on file is Radiology Associates of Macon. Dmand AI also links Dr. Keenan to 4 more hospitals, 3 group practices and clinics and 2 medical groups, each named with a free account.
Piedmont Macon Medical CenterRadiology Associates of Macon4 hospitalsNames with a free account3 group practices and clinicsNames with a free account2 medical groupsNames with a free account
See all 12 affiliations for Dr. KeenanSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark William Keenan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Keenan practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Atrium Health Navicent The Medical Center | Available with a free account |
| +8 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Mark William Keenan is one of 920 diagnostic radiologists in Georgia
Diagnostic radiology is Dr. Keenan's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Keenan is licensed in Georgia.
Specialties and state licenses
- Diagnostic radiology, GeorgiaPrimary
Diagnostic radiologists near Dr. Keenan
Counts of diagnostic radiologists with a Dmand AI profile, by place and practice. Each opens the list.
920diagnostic radiologists in Georgia87diagnostic radiologists in Macon15diagnostic radiologists at Atrium Health Navicent The Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Mark William Keenan billed Medicare for 3,355 services in 2024
CMS data shows 3,355 Medicare services from Dr. Keenan across 39 procedure codes in 2024, for 2,415 Medicare patients. Medicare paid $97,660 for them.
Medicare services, 20243,355
Medicare patients2,415
Paid by Medicare$97,660
Procedure codes39
Dr. Keenan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 2,9652024: 3,1847%
- Tests and treatments
- 2023: 1422024: 1441%
- Surgery
- 2023: 152024: 2780%
Where Dr. Keenan's Medicare services took place, 2024
- In an office85225%
- In a facility2,50375%
Dr. Keenan compared with the Georgia median for diagnostic radiologists, 2024
- Dr. Keenan
- Georgia median
- Medicare services
- 3,355vs 2,17454% above
- Medicare patients
- 2,415vs 1,67444% above
Medians across 895 diagnostic radiologists in Georgia with Dmand AI profiles that report each measure.
Dr. Keenan'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. Keenan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Keenan and other diagnostic radiologists in Georgia.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark William Keenan treated 2,415 Medicare patients in 2024, average age 75
CMS counts 2,415 Medicare patients who saw Dr. Keenan in 2024. The largest group is 65 to 74, with 912 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 18% are also on Medicaid. Their average risk score is 1.95, 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. Keenan's median patient age at 69, with 57% women.
Medicare patients, 20242,415
Average age75
Average risk score1.95
Also on Medicaid18%
Dr. Keenan's Medicare patients by age, 2024
Dr. Keenan's Medicare patients by sex, 2024
- Women1,25452%
- Men1,16148%
Chronic conditions among Dr. Keenan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Chronic kidney disease50%
- Ischemic heart disease46%
- Diabetes44%
- Anxiety35%
- Heart failure35%
Share of Medicare patients with each condition. A patient can have several.
Dr. Keenan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women57%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Mark William Keenan takes part in Medicare
Dr. Keenan 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 William Keenan has 2 publications on record
Dmand AI links 2 papers to Dr. Keenan, published from 2012 to 2015. The most frequent topics are Phosphodiesterase 4 Inhibitors, Solubility and Vomiting. Dr. Keenan has published most often in J Med Chem.
Papers2
Years published2012 to 2015
Topics Dr. Keenan writes about most
- Phosphodiesterase 4 Inhibitors
- Solubility
- Vomiting
Recent publications by Dr. Keenan
Cells, CulturedDisease Models, AnimalDrug Design
See who Dr. Keenan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Keenan works with, so you can find a warm path to the right diagnostic radiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Mark William Keenan received $590 in industry payments from 2016 to 2024
CMS Open Payments shows 17 general payments to Dr. Keenan from 7 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. Cook Medical LLC paid the most, $146.
General payments to Dr. Keenan by program year, 2016 to 2024
Companies that paid Dr. Keenan the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark William Keenan graduated from University of Maryland School of Medicine
Dr. Keenan graduated from University of Maryland School of Medicine in 1993.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark William Keenan'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) |
| 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 William Keenan
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 William Keenan's NPI number?
Dr. Mark William Keenan's NPI number is 1932199742. It was assigned on October 24, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark William Keenan?
Dr. Mark William Keenan is a diagnostic radiologist in Macon, Georgia. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. Mark William Keenan practice?
Dr. Keenan practices at 777 Hemlock Street, Macon, GA 31201. Dr. Keenan's primary practice is Atrium Health Navicent The Medical Center in Macon, Georgia, part of Advocate Health. Dmand AI also links Dr. Keenan to 4 hospitals, 3 group practices and clinics and 2 medical groups.
What is Dr. Mark William Keenan's office phone number?
The practice phone on file for Dr. Keenan is (478) 633-1000.
What is Dr. Mark William Keenan's medical license number?
Dr. Keenan holds Georgia license 40436.
Which hospitals is Dr. Mark William Keenan affiliated with?
Dr. Keenan practices at Atrium Health Navicent The Medical Center in Macon, Georgia. Dr. Keenan is also affiliated with Piedmont Macon Medical Center. Dmand AI links Dr. Keenan to 4 more hospitals.
What medical group is Dr. Mark William Keenan part of?
Dr. Keenan is linked to Radiology Associates of Macon. Dmand AI links Dr. Keenan to 2 more medical groups.
Does Dr. Mark William Keenan accept Medicare?
Yes. CMS data shows Dr. Keenan billed Medicare for 3,355 services in 2024, and Dr. Keenan accepts Medicare assignment.
How many Medicare patients does Dr. Mark William Keenan see?
CMS counts 2,415 Medicare patients who saw Dr. Keenan in 2024, with an average age of 75.
What services does Dr. Mark William Keenan bill to Medicare?
In 2024, Dr. Keenan's most billed Medicare services were diagnostic imaging (71045), diagnostic imaging (74177) and diagnostic imaging (71260).
Show 4 more questionsShow fewer questions
Where did Dr. Mark William Keenan go to medical school?
Dr. Keenan graduated from University of Maryland School of Medicine in 1993.
Has Dr. Mark William Keenan received payments from drug or device companies?
CMS Open Payments shows $590 in general payments to Dr. Keenan from 7 companies from 2016 to 2024. The largest total came from Cook Medical LLC.
How long has Dr. Mark William Keenan been practicing?
Dr. Keenan graduated from medical school in 1993, 33 years ago.
Does Dr. Mark William Keenan do research?
Dmand AI links 2 publications to Dr. Keenan, published from 2012 to 2015.
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