Mark Grinman, MD
Neurology Physician · Myrtle Beach, SC
Mark Grinman, MD is a neurology physician with a practice address in Myrtle Beach, South Carolina, and NPI 1164489829, issued on Apr 27, 2006. Check the license (South Carolina 20455, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Mark Grinman
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- 20455 SC
Self-reported in NPPES; status is on the state search - Practice location
- 920 Doug White Dr Ste 460, Myrtle Beach, SC 29572
- Phone
- (843) 449-2336
- Enumerated
- Apr 27, 2006
- Record last updated
- Jan 28, 2022
- Fax
- (843) 692-2174
- Medicaid ID
- 020455800 SC
- Medicare enrollment
- Enrolled (PECOS I20220302000912); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 326 in South Carolina → Look up another NPI →
Also registered at 920 Doug White Dr Ste 460
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Logan BrownAcute Care Nurse Practitioner1760004923
- Robert Coni, D.O.Neurology Physician1114023991
- Felicia Anne Denittis, PA-CSurgical Physician Assistant1487638227
- Erin Finley, PHYSICIAN ASSISTANTPhysician Assistant1891715850
- Eugene Giddens, MDNeurological Surgery Physician1932168986
- Kathryn McZeke, FNPFamily Nurse Practitioner1043663750
Verify Mark Grinman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 20455Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 97.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Southwest Medical Associates, LLCAlbuquerque, NM
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Grinman among 326 neurology physician records in South Carolina
Mark Grinman, MD is one of 326 neurology physician records with a practice address in South Carolina. 77% 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, 65% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1985 · median 2007 among the 185 with a school on file
- Record last updated2022 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in South Carolina
There are 326 neurology physician records in South Carolina.
All 326 in South Carolina → Every provider in Myrtle Beach → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Jeff Benjamin, DOMyrtle Beach, SC 295721821057779
- Robert Coni, D.O.Myrtle Beach, SC 295721114023991
- Luke Vanells, MDMyrtle Beach, SC 295721174015416
- Scott Callaghan, D.O.Murrells Inlet, SC 295761497747018
- McKenzye Dehart McCoyle, DOMurrells Inlet, SC 295761083237911
- Michael McCaffrey, M.D.Murrells Inlet, SC 295761902863103
- Leslee Hudgins, DOLittle River, SC 295661104034156
- Nicholas Koroneos, MS, DOLittle River, SC 295661134622913
Common questions
What is Mark Grinman, MD's NPI number?
Mark Grinman, MD's National Provider Identifier (NPI) is 1164489829, issued on Apr 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Grinman, MD located?
The NPPES record lists a practice address at 920 Doug White Dr Ste 460, Myrtle Beach, SC, 29572. Phone: (843) 449-2336. Providers update this record themselves, so call before visiting.
How can I verify Mark Grinman, MD's license?
NPPES lists South Carolina license number 20455, 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.
What is Mark Grinman, MD's MIPS final score?
The 2023 MIPS final score is 97.6 of 100. 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.