Adam Gregory Marshall, PA
Physician Assistant · Baton Rouge, LA
Adam Gregory Marshall, PA is a physician assistant with a practice address in Baton Rouge, Louisiana, and NPI 1255826194, issued on Jun 23, 2018. Check the license (Louisiana 335428, as entered in NPPES) with the Louisiana board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Adam Gregory Marshall
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 335428 LA
Self-reported in NPPES; status is on the state search - Practice location
- 8080 Bluebonnet Blvd Ste 1000, Baton Rouge, LA 70810
- Phone
- (225) 924-2424
- Enumerated
- Jun 23, 2018
- Record last updated
- Jan 7, 2026
- Fax
- (225) 408-7980
- Medicare enrollment
- Enrolled (PECOS I20230425000297); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 1,556 in Louisiana → Look up another NPI →
Also registered at 8080 Bluebonnet Blvd Ste 1000
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Adam Gregory Marshall in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Louisiana board licenses this profession
Search for license 335428Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% fewer Medicare Part D claims than the average physician assistant in 2024
337 Medicare Part D claims for 178 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 114 claims were for opioids.
Most prescribed
- Meloxicam112 claims
- Hydrocodone-Acetaminophen56 claims
- Cyclobenzaprine Hcl30 claims
- Methylprednisolone30 claims
- Tramadol Hcl25 claims
- Acetaminophen-Codeine17 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: $70.86
3 payments; by number, the most common kind was food and beverage; the largest payer was Pacira Pharmaceuticals Incorporated. 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
- Baton Rouge Orthopaedic Clinic LLCBaton Rouge, LA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Adam Gregory Marshall among 1,556 physician assistant records in Louisiana
Adam Gregory Marshall, PA is one of 1,556 physician assistant records with a practice address in Louisiana. 80% 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 48% of them.
- NPI issued2018 · 48% of these records are older, 47% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2022 · median 2018 among the 1,031 with a school on file
- Record last updated2026 · 41% 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 Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
327 physician assistant records list a practice address in Baton Rouge
They are 327 of the 12,526 NPPES records with a practice address in Baton Rouge, and 1,556 physician assistant records in Louisiana.
All 1,556 in Louisiana → Every provider in Baton Rouge → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Terry Braud, PA-CBaton Rouge, LA 708101508076456
- Georgia Cox, P.A.Baton Rouge, LA 708101790701522
- Kathryn Felder, PA-CBaton Rouge, LA 708101619103272
- John Fudickar, PABaton Rouge, LA 708101841218484
- Stephen Guillory, PA-CBaton Rouge, LA 708101386751071
- Joshua Hebert, PABaton Rouge, LA 708101649464223
- Matthew Latiolais, P.A.Baton Rouge, LA 708101992989941
- James Leblanc, PA-CBaton Rouge, LA 708101023125853
Common questions
What is Adam Gregory Marshall, PA's NPI number?
Adam Gregory Marshall, PA's National Provider Identifier (NPI) is 1255826194, issued on Jun 23, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Adam Gregory Marshall, PA located?
The NPPES record lists a practice address at 8080 Bluebonnet Blvd Ste 1000, Baton Rouge, LA, 70810. Phone: (225) 924-2424. Providers update this record themselves, so call before visiting.
How can I verify Adam Gregory Marshall, PA's license?
NPPES lists Louisiana license number 335428, as entered by the provider. Search the Louisiana board that licenses this profession; the NPPES record confirms identity only.
How much does Adam Gregory Marshall, PA prescribe under Medicare Part D?
In 2024, Adam Gregory Marshall, PA had 337 Medicare Part D claims for 178 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.