Gregory C. Henkelmann, MD
Radiation Oncology Physician · Baton Rouge, LA
Gregory C. Henkelmann, MD is a radiation oncology physician with a practice address in Baton Rouge, Louisiana, and NPI 1639264237, issued on Oct 3, 2006. Check the license (Louisiana 07671R, as entered in NPPES) on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Gregory C. Henkelmann
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- 07671R LA
Self-reported in NPPES; status is on the state search - Practice location
- 4950 Essen Lane, Baton Rouge, LA 70809
- Phone
- (225) 215-1136
- Enumerated
- Oct 3, 2006
- Record last updated
- Nov 23, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (225) 215-1658
- Medicaid ID
- 1377325 LA
- Medicare enrollment
- Enrolled (PECOS I20081215000001); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 1984
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 66 in Louisiana → Look up another NPI →
Also registered at 4950 Essen Lane
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Stephen Antrobus, M.D.MOHS-Micrographic Surgery Physician1629116553
- Bryan Bienvenu, MDHematology & Oncology Physician1932121795
- Frederic Billings, M.D.Hematology & Oncology Physician1063519072
- Robert Fields, M.D.Therapeutic Radiology Physician1700984093
- Sheldon Johnson, M.D.Therapeutic Radiology Physician1568554871
- Maurice King, M.D.Radiation Oncology Physician1194817411
Verify Gregory C. Henkelmann in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersLouisiana State Board of Medical Examiners
Search for license 07671RCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
31% fewer Medicare Part D claims than the average radiation oncology physician in 2024
92 Medicare Part D claims for 30 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. 56 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen33 claims
- Morphine Sulfate Er11 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $66.17
3 payments; by number, the most common kind was food and beverage; the largest payer was Regeneron Healthcare Solutions, Inc. The 3,275 providers of this specialty with any payment received $1,897.85 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 2 group practices
- Mary Bird Perkins Cancer CenterCovington, LA
- St. Elizabeth-Mary Bird Perkins Cancer Center, L.L.C.Gonzales, LA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory C. Henkelmann among 66 radiation oncology physician records in Louisiana
Gregory C. Henkelmann, MD is one of 66 radiation oncology physician records with a practice address in Louisiana. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 50% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1984 · median 2008 among the 49 with a school on file
- Record last updated2009 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in Louisiana
There are 66 radiation oncology physician records in Louisiana.
All 66 in Louisiana → Every provider in Baton Rouge → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Gregory Cotter, M.D.Baton Rouge, LA 708091659363067
- Michael Dzeda, M.D.Baton Rouge, LA 708091659318129
- Andrew Elson, MDBaton Rouge, LA 708091649596107
- Maurice King, M.D.Baton Rouge, LA 708091194817411
- Maurice King, MDBaton Rouge, LA 708091629497888
- Konstantin Kovtun, M.D.Baton Rouge, LA 708091528406832
- Renee Levine, M.D.Baton Rouge, LA 708091811095102
- Kenneth Lo, MDBaton Rouge, LA 708091700897220
Common questions
What is Gregory C. Henkelmann, MD's NPI number?
Gregory C. Henkelmann, MD's National Provider Identifier (NPI) is 1639264237, issued on Oct 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory C. Henkelmann, MD located?
The NPPES record lists a practice address at 4950 Essen Lane, Baton Rouge, LA, 70809. Phone: (225) 215-1136. Providers update this record themselves, so call before visiting.
How can I verify Gregory C. Henkelmann, MD's license?
NPPES lists Louisiana license number 07671R, 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 Gregory C. Henkelmann, MD prescribe under Medicare Part D?
In 2024, Gregory C. Henkelmann, MD had 92 Medicare Part D claims for 30 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
What is Gregory C. Henkelmann, MD's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.