Mark Howard Overton, M.D.
Geriatric Medicine (Internal Medicine) Physician · Little River, SC
Mark Howard Overton, M.D. is a geriatric medicine (internal medicine) physician with a practice address in Little River, South Carolina, and NPI 1568437184, issued on Feb 17, 2006. Check the license (South Carolina 32215, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Mark Howard Overton
- Credential
- M.D.
- Primary taxonomy
- Geriatric Medicine (Internal Medicine) Physician 207RG0300X
- License number
- 32215 SC
Self-reported in NPPES; status is on the state search - Practice location
- 4237 River Hills Drive, Suite 150, Little River, SC 29566
- Phone
- (843) 281-2778
- Enumerated
- Feb 17, 2006
- Record last updated
- May 18, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (843) 281-2785
- Medicare enrollment
- Enrolled (PECOS I20231115002488); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest geriatric medicine (internal medicine) physician records → All 38 in South Carolina → Look up another NPI →
Verify Mark Howard Overton in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 32215Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024
69 Medicare Part D claims for 31 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D.
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.
Bills Medicare through 2 group practices
- Usacs Integrated Acute Care Services OF North Carolina, PLLCElizabeth City, NC
- Vidant Medical Group LLCEdenton, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Howard Overton among 38 geriatric medicine (internal medicine) physician records in South Carolina
Mark Howard Overton, M.D. is one of 38 geriatric medicine (internal medicine) physician records with a practice address in South Carolina. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 32% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1981 · median 1996 among the 22 with a school on file
- Record last updated2012 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Internal Medicine) Physician providers in South Carolina
There are 38 geriatric medicine (internal medicine) physician records in South Carolina.
All 38 in South Carolina → Every provider in Little River → Geriatric Medicine (Internal Medicine) Physician nationwide →
The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes
- Donald Courtney, M.D.Myrtle Beach, SC 295721265490379
- Lester Salwen, M.D.Greenville, SC 296051205875952
- Michelle Crouse, M.D.Greenville, SC 296151942664610
- James Davis, MDGreenville, SC 296151134154735
- Susan Kring, MDGreenville, SC 296151235123860
- Ingrid Isakov Kyriakakis, MDAnderson, SC 296211417081282
- Rajiv Joglekar, MDAnderson, SC 296211962451534
- Vipin Verma, M.D.Anderson, SC 296211093156580
Common questions
What is Mark Howard Overton, M.D.'s NPI number?
Mark Howard Overton, M.D.'s National Provider Identifier (NPI) is 1568437184, issued on Feb 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Howard Overton, M.D. located?
The NPPES record lists a practice address at 4237 River Hills Drive, Suite 150, Little River, SC, 29566. Phone: (843) 281-2778. Providers update this record themselves, so call before visiting.
How can I verify Mark Howard Overton, M.D.'s license?
NPPES lists South Carolina license number 32215, 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 Howard Overton, M.D. prescribe under Medicare Part D?
In 2024, Mark Howard Overton, M.D. had 69 Medicare Part D claims for 31 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. Part D covers Medicare prescriptions only.
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.