Marla McMahon Simmons, D.M.D.
Dentist · Charleston, SC
Marla McMahon Simmons, D.M.D. is a dentist with a practice address in Charleston, South Carolina, and NPI 1578929493, issued on Jan 7, 2016. Check the license (South Carolina 3332, as entered in NPPES) with the South Carolina board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marla McMahon Simmons
- Credential
- D.M.D.
- Primary taxonomy
- Dentist 122300000X
- License number
- 3332 SC
Self-reported in NPPES; status is on the state search - Practice location
- 198 Rutledge Ave, Charleston, SC 29403
- Phone
- (843) 723-5405
- Enumerated
- Jan 7, 2016
- Record last updated
- Apr 7, 2016 (not updated in 10 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest dentist records → All 1,124 in South Carolina → Look up another NPI →
Also registered at 198 Rutledge Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Courtney Shelbourne, DMDOral and Maxillofacial Surgery (Dentist)1407857428
- John Sperry, M.D.Pediatrics Physician1730137142
Verify Marla McMahon Simmons in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich South Carolina board licenses this profession
Search for license 3332Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
66% fewer Medicare Part D claims than the average dentist in 2024
29 Medicare Part D claims for 20 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amoxicillin14 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.
Marla McMahon Simmons among 1,124 dentist records in South Carolina
Marla McMahon Simmons, D.M.D. is one of 1,124 dentist records with a practice address in South Carolina. 66% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 64% of them.
- NPI issued2016 · 64% of these records are older, 33% newer
- In a Medicare fileYes · 66% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2016 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dentist providers in South Carolina
There are 1,124 dentist records in South Carolina.
All 1,124 in South Carolina → Every provider in Charleston → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Jan Baraczek, D.M.D.Charleston, SC 294031366995839
- Dominique Carranza, DDSCharleston, SC 294031205718665
- Robert Griffeth, DMDCharleston, SC 294031972340685
- Brian Kramer, D.D.S.Charleston, SC 294031881007854
- Anastacia Lane, D.M.DCharleston, SC 294031871901256
- Nathan Seng, D.D.S.Charleston, SC 294031427254242
- Benjamin Britten, DDSCharleston Afb, SC 294041558531418
- Matthew Burns, D.M.D.Joint Base Charleston, SC 294041689084998
Common questions
What is Marla McMahon Simmons, D.M.D.'s NPI number?
Marla McMahon Simmons, D.M.D.'s National Provider Identifier (NPI) is 1578929493, issued on Jan 7, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Marla McMahon Simmons, D.M.D. located?
The NPPES record lists a practice address at 198 Rutledge Ave, Charleston, SC, 29403. Phone: (843) 723-5405. Providers update this record themselves, so call before visiting.
How can I verify Marla McMahon Simmons, D.M.D.'s license?
NPPES lists South Carolina license number 3332, as entered by the provider. Search the South Carolina board that licenses this profession; the NPPES record confirms identity only.
How much does Marla McMahon Simmons, D.M.D. prescribe under Medicare Part D?
In 2024, Marla McMahon Simmons, D.M.D. had 29 Medicare Part D claims for 20 beneficiaries; the average among dentist prescribers was 86. 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.