Marc Difronzo, PA-C
Physician Assistant · Charleston, SC
Marc Difronzo, PA-C is a physician assistant with a practice address in Charleston, South Carolina, and NPI 1194200154, issued on Sep 26, 2018. Check the license with the South Carolina board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marc Difronzo
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 1470 Tobias Gadson Blvd Ste 101, Charleston, SC 29407
- Phone
- (843) 825-9905
- Enumerated
- Sep 26, 2018
- Record last updated
- Jun 9, 2025
- Fax
- (843) 895-4493
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 2,294 in South Carolina → Look up another NPI →
Verify Marc Difronzo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich South Carolina board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average physician assistant in 2024
191 Medicare Part D claims, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Levetiracetam28 claims
- Clopidogrel23 claims
- Gabapentin23 claims
- Levothyroxine Sodium13 claims
- Methenamine Hippurate13 claims
- Pravastatin Sodium13 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.
Marc Difronzo among 2,294 physician assistant records in South Carolina
Marc Difronzo, PA-C is one of 2,294 physician assistant records with a practice address in South Carolina. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 47% of them.
- NPI issued2018 · 47% of these records are older, 49% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2025 · 31% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
407 physician assistant records list a practice address in Charleston
They are 407 of the 10,840 NPPES records with a practice address in Charleston, and 2,294 physician assistant records in South Carolina.
All 2,294 in South Carolina → Every provider in Charleston → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Karen Byrd, PA-CCharleston, SC 294071023460680
- Deanna CarricoCharleston, SC 294071558307033
- Wanda Copeland, PA CCharleston, SC 294071497704035
- Alissa Dickerson, PA-CCharleston, SC 294071104854181
- Karen Gadol, PA-CCharleston, SC 294071396719290
- Roxanne Hall, PACCharleston, SC 294071033156179
- Daniel Knowles, PACharleston, SC 294071972169373
- Aubrie Mathewson, PA-CCharleston, SC 294071689159865
Common questions
What is Marc Difronzo, PA-C's NPI number?
Marc Difronzo, PA-C's National Provider Identifier (NPI) is 1194200154, issued on Sep 26, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Marc Difronzo, PA-C located?
The NPPES record lists a practice address at 1470 Tobias Gadson Blvd Ste 101, Charleston, SC, 29407. Phone: (843) 825-9905. Providers update this record themselves, so call before visiting.
How can I verify Marc Difronzo, PA-C's license?
Search the South Carolina board that licenses this profession; the NPPES record confirms identity only.
How much does Marc Difronzo, PA-C prescribe under Medicare Part D?
In 2024, Marc Difronzo, PA-C had 191 Medicare Part D claims; the average among physician assistant prescribers was 830. 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.