Andrew Steven Gahagan, MD
Hematology & Oncology Physician · Baton Rouge, LA
Andrew Steven Gahagan, MD is a hematology & oncology physician with a practice address in Baton Rouge, Louisiana, and NPI 1609372812, issued on Apr 5, 2018. Check the license (Louisiana 339937, as entered in NPPES) on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Andrew Steven Gahagan
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 339937 LA
Self-reported in NPPES; status is on the state search - Practice location
- 4950 Essen LN, Baton Rouge, LA 70809
- Phone
- (225) 767-0847
- Enumerated
- Apr 5, 2018
- Record last updated
- Jul 30, 2024
- Fax
- (225) 767-1335
- Medicare enrollment
- Enrolled (PECOS I20240722001615); accepts Medicare assignment
- Medical or professional school
- Louisiana State University School Of Medicine In New Orleans, 2018
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 4950 Essen LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Deborah Abernathy, MDHematology & Oncology Physician1114905049
- Phillip Allen, M.D.Otolaryngology Physician1538150701
- Emily Brooks, MS, LDN, RDNRegistered Dietitian1831883339
- Martha Broussard, CRNACertified Registered Nurse Anesthetist1083685762
- Donna Bryant, N.P.Nurse Practitioner1275731473
- Jamie Chustz, CRNACertified Registered Nurse Anesthetist1922079615
Verify Andrew Steven Gahagan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersLouisiana State Board of Medical Examiners
Search for license 339937Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
231 Medicare Part D claims for 72 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 26 claims were for opioids.
Most prescribed
- Prochlorperazine Maleate16 claims
- Loperamide13 claims
- Hydrocodone-Acetaminophen12 claims
- Prednisone11 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: $745.93
27 payments; by number, the most common kind was food and beverage; the largest payer was Adc Therapeutics America, Inc. The 8,560 providers of this specialty with any payment received $7,481.41 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
- Mary Bird Perkins Cancer CenterBaton Rouge, LA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hematology & Oncology Physician providers in Louisiana
There are 188 hematology & oncology physician records in Louisiana.
Other hematology & oncology physician records in Louisiana
- Hossam Abdel-Rahman, MEDIAL DOCTORMamou, LA1164485173
- Deborah Abernathy, MDBaton Rouge, LA1114905049
- Bassam Abi-Rached, M.D.Alexandria, LA1285637314
- Sweekriti Adhikari, D.O.Lafayette, LA1568723716
- Sudhir Aggarwal, M.D.Lafayette, LA1972568715
- Shradha Ahuja, MDNew Orleans, LA1578904199
- Heather Alva, MDNew Orleans, LA1891159190
- Nelly Aoun, MDCovington, LA1285889675
- Gerardo Arias, M.D.Thibodaux, LA1447265178
- Thomas Atkinson, MDNew Orleans, LA1760758221
Common questions
What is Andrew Steven Gahagan, MD's NPI number?
Andrew Steven Gahagan, MD's National Provider Identifier (NPI) is 1609372812, issued on Apr 5, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Andrew Steven Gahagan, MD located?
The NPPES record lists a practice address at 4950 Essen LN, Baton Rouge, LA, 70809. Phone: (225) 767-0847. Providers update this record themselves, so call before visiting.
How can I verify Andrew Steven Gahagan, MD's license?
NPPES lists Louisiana license number 339937, as entered by the provider. Search the Louisiana State Board of Medical Examiners at https://www.lsbme.la.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Andrew Steven Gahagan, MD prescribe under Medicare Part D?
In 2024, Andrew Steven Gahagan, MD had 231 Medicare Part D claims for 72 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.