Mark Robert Keaton, M.D.
Hematology & Oncology Physician · Florence, SC
Mark Robert Keaton, M.D. is a hematology & oncology physician with a practice address in Florence, South Carolina, and NPI 1477530533, issued on Dec 29, 2005. Check the license (South Carolina 51420, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Mark Robert Keaton
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- 51420 SC
028423 GA
Self-reported in NPPES; status is on the state search - Practice location
- 805 Pamplico Hwy Ste 315, Florence, SC 29505
- Phone
- (843) 674-6460
- Enumerated
- Dec 29, 2005
- Record last updated
- Jan 25, 2022
- Medicaid IDs
- 00531649J GA
G28423 SC - Medicare enrollment
- Enrolled (PECOS I20210309002824); accepts Medicare assignment
- Medical or professional school
- Medical College Of Georgia School Of Medicine, 1983
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 181 in South Carolina → Look up another NPI →
Also registered at 805 Pamplico Hwy Ste 315
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Reem Akel, MDHematology & Oncology Physician1619461852
- Wael Ghalayini, M.D.Hematology & Oncology Physician1629360441
Verify Mark Robert Keaton in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 51420Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
99 Medicare Part D claims for 34 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 78.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $9,432.37
13 payments; by number, the most common kind was consulting fee; the largest payer was AstraZeneca Pharmaceuticals LP. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Kauai Medical ClinicLihue, HI
- Mchs Hospitals IncMarshfield, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Robert Keaton among 181 hematology & oncology physician records in South Carolina
Mark Robert Keaton, M.D. is one of 181 hematology & oncology physician records with a practice address in South Carolina. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 79% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated1983 · median 2006 among the 139 with a school on file
- Record last updated2022 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in South Carolina
There are 181 hematology & oncology physician records in South Carolina.
All 181 in South Carolina → Every provider in Florence → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Reem Akel, MDFlorence, SC 295051619461852
- Wael Ghalayini, M.D.Florence, SC 295051629360441
- Sushma Pavuluri, DOFlorence, SC 295051306401211
- Orachun Sittisuntorn, MDFlorence, SC 295051275525784
- Rajesh Bajaj, M.D.Florence, SC 295061972543643
- Ravneet Bajwa, M.D.Florence, SC 295061396033700
- Harry Markwell, M.D.Florence, SC 295061235179854
- Vijeyaluxmy Motilal Nehru, M.D.Florence, SC 295061841638939
Common questions
What is Mark Robert Keaton, M.D.'s NPI number?
Mark Robert Keaton, M.D.'s National Provider Identifier (NPI) is 1477530533, issued on Dec 29, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark Robert Keaton, M.D. located?
The NPPES record lists a practice address at 805 Pamplico Hwy Ste 315, Florence, SC, 29505. Phone: (843) 674-6460. Providers update this record themselves, so call before visiting.
How can I verify Mark Robert Keaton, M.D.'s license?
NPPES lists South Carolina license number 51420, as entered by the provider. Search the South Carolina Board of Medical Examiners at https://verify.llronline.com/LicLookup/Med/Med.aspx?div=22. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Robert Keaton, M.D. prescribe under Medicare Part D?
In 2024, Mark Robert Keaton, M.D. had 99 Medicare Part D claims for 34 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Mark Robert Keaton, M.D.'s MIPS final score?
The 2023 MIPS final score is 78.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.