Alexandria Garrity Marks, PA-C
Physician Assistant · Greenville, SC
Alexandria Garrity Marks, PA-C is a physician assistant with a practice address in Greenville, South Carolina, and NPI 1568041762, issued on Apr 5, 2021. Check the license (South Carolina 5391, as entered in NPPES) with the South Carolina board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Alexandria Garrity Marks
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 5391 SC
Self-reported in NPPES; status is on the state search - Practice location
- 701 Congaree RD, Greenville, SC 29607
- Phone
- (864) 248-4100
- Enumerated
- Apr 5, 2021
- Record last updated
- Sep 18, 2025
- Fax
- (864) 248-4105
- Medicare enrollment
- Enrolled (PECOS I20241010000012); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 701 Congaree RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Robert Brown, M.D.Plastic Surgery within the Head & Neck (Otolaryngology) Physician1124074851
- Kyle Cassas, M.D.Sports Medicine (Family Medicine) Physician1598718934
- Megan Furnish, LAT,ATCAthletic Trainer1629065917
- Madison Hobbs, DPTPhysical Therapist1376152439
- Alexander Kassalias, D.C.Chiropractor1588624233
- Michael Kissenberth, M.D.Sports Medicine (Orthopaedic Surgery) Physician1184670994
Verify Alexandria Garrity Marks 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 5391Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average physician assistant in 2024
72 Medicare Part D claims for 30 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 32 claims were for opioids.
Most prescribed
- Cefadroxil19 claims
- Oxycodone Hcl18 claims
- Ondansetron Odt13 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.
Industry payments in 2024: $189.58
1 payment: food and beverage; the largest payer was Exactech, Inc. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Prisma Health University Medical GroupGreenville, SC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
305 physician assistant records list a practice address in Greenville
They are 305 of the 10,264 NPPES records with a practice address in Greenville, and 2,294 physician assistant records in South Carolina.
All 305 in Greenville → All 2,294 in South Carolina → Every provider in Greenville →
Other physician assistant records in South Carolina
- Linda Aanonsen, PAConway, SC1184822777
- Rana Abedini, PA-CGreenville, SC1780154807
- Michael Adam, PANorth Augusta, SC1699884957
- Taylor AdamCharleston, SC1902576929
- Amber AdamsMyrtle Beach, SC1447101092
- Chandler Adams, PA-CGreenwood, SC1205465820
- Kaylee Adams, PA-CSeneca, SC1942943246
- Nicholas AdamsonsN Charleston, SC1740929637
- Ashley AdasczikCharleston, SC1750265294
- Benjamin Addy, PA-CWest Columbia, SC1831520782
Common questions
What is Alexandria Garrity Marks, PA-C's NPI number?
Alexandria Garrity Marks, PA-C's National Provider Identifier (NPI) is 1568041762, issued on Apr 5, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Alexandria Garrity Marks, PA-C located?
The NPPES record lists a practice address at 701 Congaree RD, Greenville, SC, 29607. Phone: (864) 248-4100. Providers update this record themselves, so call before visiting.
How can I verify Alexandria Garrity Marks, PA-C's license?
NPPES lists South Carolina license number 5391, as entered by the provider. Search the South Carolina board that licenses this profession; the NPPES record confirms identity only.
How much does Alexandria Garrity Marks, PA-C prescribe under Medicare Part D?
In 2024, Alexandria Garrity Marks, PA-C had 72 Medicare Part D claims for 30 beneficiaries; 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.