Marvin M. Portner, M.D.
Allergy Physician · Mount Pleasant, SC
Marvin M. Portner, M.D. is an allergy physician with a practice address in Mount Pleasant, South Carolina, and NPI 1356366793, issued on Jul 13, 2006. Check the license (South Carolina MD87328, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Marvin M. Portner
- Credential
- M.D.
- Primary taxonomy
- Allergy Physician 207KA0200X
- License numbers
- MD87328 SC
C28757 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1783 Shell Ring Cir, Mount Pleasant, SC 29466
- Phone
- (310) 266-3050
- Enumerated
- Jul 13, 2006
- Record last updated
- Apr 18, 2022
- Fax
- (310) 454-5318
- Entity
- Type 1 · individual
8 nearest allergy physician records → All 12 in South Carolina → Look up another NPI →
Also registered at 1783 Shell Ring Cir
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Eleanor Haspel-Portner, PH.D.Clinical Psychologist1902134679
Verify Marvin M. Portner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license MD87328Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average allergy physician in 2024
98 Medicare Part D claims, against an average of 750 among the 645 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.
Marvin M. Portner among 12 allergy physician records in South Carolina
Marvin M. Portner, M.D. is one of 12 allergy physician records with a practice address in South Carolina. 75% 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 58% of them.
- NPI issued2006 · 58% of these records are older, 17% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 42% of these records are
- Record last updated2022 · 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 207KA0200X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy Physician providers in South Carolina
There are 12 allergy physician records in South Carolina.
All 12 in South Carolina → Every provider in Mount Pleasant → Allergy Physician nationwide →
The 8 allergy physician records with the nearest ZIP codes
- William Weirs, MDNorth Charleston, SC 294201235174012
- Ari Zelig, M.D.Charleston, SC 294141740555952
- Mark Schecker, M.D.Myrtle Beach, SC 295881023014057
- Fred Leffert, M.D.Greenville, SC 296011073691580
- Candace Cothran, PAGreenville, SC 296071679574370
- Shanna Cowan, MS PACGreenville, SC 296071154317097
- Neil Kao, MDGreenville, SC 296071720089477
- Angelina Lombardi, M.D.Greenville, SC 296071487645107
Common questions
What is Marvin M. Portner, M.D.'s NPI number?
Marvin M. Portner, M.D.'s National Provider Identifier (NPI) is 1356366793, issued on Jul 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marvin M. Portner, M.D. located?
The NPPES record lists a practice address at 1783 Shell Ring Cir, Mount Pleasant, SC, 29466. Phone: (310) 266-3050. Providers update this record themselves, so call before visiting.
How can I verify Marvin M. Portner, M.D.'s license?
NPPES lists South Carolina license number MD87328, 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 Marvin M. Portner, M.D. prescribe under Medicare Part D?
In 2024, Marvin M. Portner, M.D. had 98 Medicare Part D claims; the average among allergy physician prescribers was 750. 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.