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Allergy Specialists in South Carolina

Data updated monthly · Last refresh October 2026

12 Allergy providers practice in South Carolina. The largest concentration is in Greenville. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.

12providers
Greenvilletop city

Allergy by city in South Carolina

Choose a city to see providers there.

Allergy in Greenville6 providers
Allergy in Myrtle Beach1 providers
Allergy in Charleston1 providers
Allergy in Sumter1 providers
Allergy in North Charleston1 providers
Allergy in Hilton Head1 providers
Allergy in Mount Pleasant1 providers

Where Allergy Specialists in South Carolina practice

From CMS Medicare enrollment records covering 5 of the 12 providers listed here (42%). Providers who do not bill Medicare are not included in these figures.

Largest practice groups

Group (as registered with Medicare)Allergy SpecialistsAll clinicians in groupMain city
Allergic Disease and Asthma Center PA37Greenville

Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.

Allergy providers in South Carolina

Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.

Dr. Ari Zelig, M.D.
Charleston, SC · $26,547 in drug and device payments (2025) · (843) 766-7103
Dr. Angelina Lombardi, M.D.
Greenville, SC · No drug or device payments recorded (2025) · (864) 627-3800
Dr. Candace Cothran, PA
Greenville, SC · $1,628 in drug and device payments (2025) · (864) 627-3800
Dr. Emmanuel Sarmiento, MD
Greenville, SC · $54,341 in drug and device payments (2025) · (864) 627-3800
Dr. Fred Leffert, M.D.
Greenville, SC · No drug or device payments recorded (2025) · (864) 233-1534
Dr. Neil Kao, MD
Greenville, SC · $4,642 in drug and device payments (2025) · (864) 627-3800
Dr. Shanna Cowan, MS PAC
Greenville, SC · No drug or device payments recorded (2025) · (864) 627-3800
Dr. Salvatore Casella, M.D.
Hilton Head, SC · No drug or device payments recorded (2025) · (843) 979-5363
Dr. Marvin Portner, M.D.
Mount Pleasant, SC · No drug or device payments recorded (2025) · (310) 266-3050
Dr. Mark Schecker, M.D.
Myrtle Beach, SC · $162 in drug and device payments (2025) · (843) 293-0093
Dr. William Weirs, MD
North Charleston, SC · No drug or device payments recorded (2025) · (843) 572-1600
Dr. James Atkison, MD
Sumter, SC · No drug or device payments recorded (2025) · (803) 775-2421

Common questions

How many Allergy providers are in South Carolina?

There are 12 Allergy providers with active NPI records practicing in South Carolina, according to federal NPPES data refreshed monthly.

Which cities in South Carolina have the most Allergy providers?

Greenville (6), Myrtle Beach (1), Charleston (1) have the highest concentration of Allergy providers in South Carolina.

Where does this data come from?

Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.

Allergy in all 50 states Search all 12 in the directory Ask Zach for help choosing

Related

Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory. Are you a Allergy in South Carolina? Get featured.