Robert Howard Drennan, MD
Clinical Cardiac Electrophysiology Physician · Baton Rouge, LA
Robert Howard Drennan, MD is a clinical cardiac electrophysiology physician with a practice address in Baton Rouge, Louisiana, and NPI 1538336177, issued on May 13, 2008. Check the license (Louisiana 204133, as entered in NPPES) on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Robert Howard Drennan
- Credential
- MD
- Primary taxonomy
- Clinical Cardiac Electrophysiology Physician 207RC0001X
- License number
- 204133 LA
Self-reported in NPPES; status is on the state search - Practice location
- 8401 Picardy Ave, Baton Rouge, LA 70809
- Phone
- (225) 308-0247
- Enumerated
- May 13, 2008
- Record last updated
- Aug 31, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (225) 308-0248
- Medicaid ID
- 1040720 LA
- Medicare enrollment
- Enrolled (PECOS I20160818002785); accepts Medicare assignment
- Medical or professional school
- University Of South Carolina School Of Medicine, 2008
- Entity
- Type 1 · individual
8 nearest clinical cardiac electrophysiology physician records → All 44 in Louisiana → Look up another NPI →
Also registered at 8401 Picardy Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Christopher Alexander, FNP-BCNurse Practitioner1013149954
- Bill Cranford, FNPNurse Practitioner1184074502
- Travis Day, FNPFamily Nurse Practitioner1659009199
- Ryan Faulkner, FNPFamily Nurse Practitioner1386113066
- Kirsten Friddle, FNPFamily Nurse Practitioner1821508532
- Venkata Satish Gadi, M.D.Interventional Cardiology Physician1649451121
Verify Robert Howard Drennan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersLouisiana State Board of Medical Examiners
Search for license 204133Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average clinical cardiac electrophysiology physician in 2024
4,035 Medicare Part D claims for 427 beneficiaries, against an average of 1,710 among the 3,173 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 37 claims were for opioids.
Most prescribed
- Eliquis382 claims
- Metoprolol Succinate336 claims
- Atorvastatin Calcium238 claims
- Rosuvastatin Calcium215 claims
- Furosemide203 claims
- Amlodipine Besylate182 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: $5,068.73
80 payments; by number, the most common kind was food and beverage; the largest payer was Abbott Laboratories. The 3,167 providers of this specialty with any payment received $10,651.37 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
- Cardiovascular Institute OF The South, LLCBaton Rouge, LA
- Hospital Service District 1 OF East Baton Rouge ParishZachary, LA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert Howard Drennan among 44 clinical cardiac electrophysiology physician records in Louisiana
Robert Howard Drennan, MD is one of 44 clinical cardiac electrophysiology physician records with a practice address in Louisiana. 98% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 55% of them.
- NPI issued2008 · 55% of these records are older, 34% newer
- In a Medicare fileYes · 98% of these records are
- In the CMS Doctors and Clinicians fileYes · 89% of these records are
- Graduated2008 · median 2005 among the 39 with a school on file
- Record last updated2016 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0001X and a Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Clinical Cardiac Electrophysiology Physician providers in Louisiana
There are 44 clinical cardiac electrophysiology physician records in Louisiana.
All 44 in Louisiana → Every provider in Baton Rouge → Clinical Cardiac Electrophysiology Physician nationwide →
The 8 clinical cardiac electrophysiology physician records with the nearest ZIP codes
- Thomas Gullatt, MDBaton Rouge, LA 708091750701421
- Mark Pollet, MDBaton Rouge, LA 708091972865574
- Joshua AymondBaton Rouge, LA 708081144630369
- Kenneth Civello, MD, MPHBaton Rouge, LA 708081699745562
- Paul Dampf, M.D.Baton Rouge, LA 708081992996417
- Norman Deumite, MDBaton Rouge, LA 708081073515011
- Henry Patrick, MDBaton Rouge, LA 708081780685917
- Charles Smith, M.D.Baton Rouge, LA 708081518962984
Common questions
What is Robert Howard Drennan, MD's NPI number?
Robert Howard Drennan, MD's National Provider Identifier (NPI) is 1538336177, issued on May 13, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Robert Howard Drennan, MD located?
The NPPES record lists a practice address at 8401 Picardy Ave, Baton Rouge, LA, 70809. Phone: (225) 308-0247. Providers update this record themselves, so call before visiting.
How can I verify Robert Howard Drennan, MD's license?
NPPES lists Louisiana license number 204133, 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 Robert Howard Drennan, MD prescribe under Medicare Part D?
In 2024, Robert Howard Drennan, MD had 4,035 Medicare Part D claims for 427 beneficiaries; the average among clinical cardiac electrophysiology physician prescribers was 1,710. 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.