Gregory Marshall, FNP-C
Interventional Pain Medicine Physician · Evansville, IN
Gregory Marshall, FNP-C is an interventional pain medicine physician with a practice address in Evansville, Indiana, and NPI 1528555216, issued on Apr 18, 2018. Check the license (Indiana 71007920A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- Gregory Marshall
- Credential
- FNP-C
- Primary taxonomy
- Interventional Pain Medicine Physician 208VP0014X
- License numbers
- 71007920A IN
28207276A IN
Self-reported in NPPES; status is on the state search - Practice location
- 4411 Washington Ave Ste 100, Evansville, IN 47714
- Phone
- (812) 437-7246
- Enumerated
- Apr 18, 2018
- Record last updated
- Dec 1, 2025
- Medicaid ID
- 30006626 IN
- Medicare enrollment
- Enrolled (PECOS I20180425000614); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 2017
- Entity
- Type 1 · individual
8 nearest interventional pain medicine physician records → All 77 in Indiana → Look up another NPI →
Also registered at 4411 Washington Ave Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jamie Truelove, NPNurse Practitioner1336117001
Verify Gregory Marshall in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 71007920ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% more Medicare Part D claims than the average interventional pain medicine physician in 2024
3,684 Medicare Part D claims for 374 beneficiaries, against an average of 2,306 among the 2,100 providers of this specialty who prescribed in Part D. 2,114 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen939 claims
- Oxycodone-Acetaminophen846 claims
- Gabapentin527 claims
- Cyclobenzaprine Hcl246 claims
- Tizanidine Hcl211 claims
- Oxycodone Hcl156 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: $93.60
6 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. The 1,966 providers of this specialty with any payment received $3,889.53 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
- Shadeland Anesthesia And Pain Associates IncLafayette, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Marshall among 77 interventional pain medicine physician records in Indiana
Gregory Marshall, FNP-C is one of 77 interventional pain medicine physician records with a practice address in Indiana. 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 84% of them.
- NPI issued2018 · 84% of these records are older, 13% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2017 · median 2003 among the 54 with a school on file
- Record last updated2025 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208VP0014X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Interventional Pain Medicine Physician providers in Indiana
There are 77 interventional pain medicine physician records in Indiana.
All 77 in Indiana → Every provider in Evansville → Interventional Pain Medicine Physician nationwide →
The 8 interventional pain medicine physician records with the nearest ZIP codes
- Mansoor Khan, M.D.Evansville, IN 477141497937890
- Randall Oliver, M.D.Evansville, IN 477141356393219
- Yusuf Rashada, MDEvansville, IN 477141043225840
- Mahendra Sanapati, M.D.Evansville, IN 477141154325959
- Jaya Sanapati, MDEvansville, IN 477141780248740
- Amy Walker, ACNP-BCEvansville, IN 477141962592956
- Marjorie Oropilla-Amaya, M.D.Evansville, IN 477151477717296
- Joseph Waling, MDNewburgh, IN 476301114902160
Common questions
What is Gregory Marshall, FNP-C's NPI number?
Gregory Marshall, FNP-C's National Provider Identifier (NPI) is 1528555216, issued on Apr 18, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Marshall, FNP-C located?
The NPPES record lists a practice address at 4411 Washington Ave Ste 100, Evansville, IN, 47714. Phone: (812) 437-7246. Providers update this record themselves, so call before visiting.
How can I verify Gregory Marshall, FNP-C's license?
NPPES lists Indiana license number 71007920A, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory Marshall, FNP-C prescribe under Medicare Part D?
In 2024, Gregory Marshall, FNP-C had 3,684 Medicare Part D claims for 374 beneficiaries; the average among interventional pain medicine physician prescribers was 2,306. 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.