Mark A. Demoss, MD
Pediatrics Physician · Greer, SC
Mark A. Demoss, MD is a pediatrics physician with a practice address in Greer, South Carolina, and NPI 1538172960, issued on Aug 15, 2006. Check the license (South Carolina 20597, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Mark A. Demoss
- Credential
- MD
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- 20597 SC
Self-reported in NPPES; status is on the state search - Practice location
- 501C Memorial Dr Ext, Greer, SC 29651
- Phone
- (864) 877-1220
- Enumerated
- Aug 15, 2006
- Record last updated
- Jun 5, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (864) 877-7731
- Medicaid ID
- GP2981 SC
- Entity
- Type 1 · individual
Verify Mark A. Demoss in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 20597Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average pediatrics physician in 2024
13 Medicare Part D claims, against an average of 375 among the 5,609 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.
Industry payments in 2024: $338.56
19 payments; by number, the most common kind was food and beverage; the largest payer was Corium, LLC. The 21,580 providers of this specialty with any payment received $842.05 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.
16 pediatrics physician records list a practice address in Greer
They are 16 of the 1,131 NPPES records with a practice address in Greer, and 1,136 pediatrics physician records in South Carolina.
All 16 in Greer → All 1,136 in South Carolina → Every provider in Greer →
Other pediatrics physician records in South Carolina
- Anne Marie Abao-Beauchamp, M.D.Bluffton, SC1194118422
- Francis AcaylarBennettsville, SC1295849008
- Corinne Adkins, PA-CMyrtle Beach, SC1790905867
- Mavictoria Agustin, MDBishopville, SC1760555494
- Jill Aiken, MDMyrtle Beach, SC1376597666
- Mohammed Al Gadban, MDEasley, SC1043697022
- Laura Alberg, M.D.Columbia, SC1720075393
- Ruby Albert, MDColumbia, SC1295721009
- Bryna AldenColumbia, SC1427753813
- Theresa Alderson, MDLugoff, SC1568714053
Common questions
What is Mark A. Demoss, MD's NPI number?
Mark A. Demoss, MD's National Provider Identifier (NPI) is 1538172960, issued on Aug 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark A. Demoss, MD located?
The NPPES record lists a practice address at 501C Memorial Dr Ext, Greer, SC, 29651. Phone: (864) 877-1220. Providers update this record themselves, so call before visiting.
How can I verify Mark A. Demoss, MD's license?
NPPES lists South Carolina license number 20597, 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 A. Demoss, MD prescribe under Medicare Part D?
In 2024, Mark A. Demoss, MD had 13 Medicare Part D claims; the average among pediatrics physician prescribers was 375. 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.