Ronald Ernest Fields, MD
Critical Care Medicine (Internal Medicine) Physician · Baton Rouge, LA
Ronald Ernest Fields, MD is a critical care medicine (internal medicine) physician with a practice address in Baton Rouge, Louisiana, and NPI 1962498196, issued on Sep 22, 2005. Check the license (Louisiana 023084, as entered in NPPES) on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Ronald Ernest Fields
- Credential
- MD
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- 023084 LA
Self-reported in NPPES; status is on the state search - Practice location
- 7777 Hennessy Blvd Ste 701, Baton Rouge, LA 70808
- Phone
- (225) 765-5864
- Enumerated
- Sep 22, 2005
- Record last updated
- Dec 28, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (225) 765-2013
- Medicaid IDs
- 1494259 LA
01034394 MS - Medicare enrollment
- Enrolled (PECOS I20041104000030); accepts Medicare assignment
- Medical or professional school
- Louisiana State University School Of Medicine In Shreveport, 1996
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 62 in Louisiana → Look up another NPI →
Also registered at 7777 Hennessy Blvd Ste 701
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ramkaji Baniya, M.D.Internal Medicine Physician1174906374
- Riddhi Banthia, M.D.Internal Medicine Physician1588019343
- Anna BianchiPsychiatry Physician1730767450
Verify Ronald Ernest Fields in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersLouisiana State Board of Medical Examiners
Search for license 023084Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.6 times the Medicare Part D claims of the average critical care medicine (internal medicine) physician in 2024
3,920 Medicare Part D claims for 558 beneficiaries, against an average of 696 among the 2,873 providers of this specialty who prescribed in Part D. Brand-name drugs were 73% of claims.
Most prescribed
- Trelegy Ellipta1,166 claims
- Albuterol Sulfate Hfa930 claims
- Breo Ellipta159 claims
- Ventolin Hfa111 claims
- Spiriva Respimat110 claims
- Symbicort107 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: $2,212.95
109 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. The 2,708 providers of this specialty with any payment received $2,958.68 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
- Our Lady OF The Lake Physician Group LLCGonzales, LA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ronald Ernest Fields among 62 critical care medicine (internal medicine) physician records in Louisiana
Ronald Ernest Fields, MD is one of 62 critical care medicine (internal medicine) physician records with a practice address in Louisiana. 92% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 92% of these records are
- In the CMS Doctors and Clinicians fileYes · 89% of these records are
- Graduated1996 · median 2010 among the 55 with a school on file
- Record last updated2020 · 29% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in Louisiana
There are 62 critical care medicine (internal medicine) physician records in Louisiana.
All 62 in Louisiana → Every provider in Baton Rouge → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Stephen Adjei, M.D.Baton Rouge, LA 708081871518530
- Benjamin Deaton, M.D.Baton Rouge, LA 708081376803437
- James FordBaton Rouge, LA 708081609033802
- Abdulla Majid-Moosa, D.OBaton Rouge, LA 708081558628859
- Bevan Myles, M.D.Baton Rouge, LA 708081356784284
- Alexandra Perry, MDBaton Rouge, LA 708081063733855
- Daniel Rees, M. D.Baton Rouge, LA 708081780094011
- Ryan Richard, MDBaton Rouge, LA 708081649538471
Common questions
What is Ronald Ernest Fields, MD's NPI number?
Ronald Ernest Fields, MD's National Provider Identifier (NPI) is 1962498196, issued on Sep 22, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Ronald Ernest Fields, MD located?
The NPPES record lists a practice address at 7777 Hennessy Blvd Ste 701, Baton Rouge, LA, 70808. Phone: (225) 765-5864. Providers update this record themselves, so call before visiting.
How can I verify Ronald Ernest Fields, MD's license?
NPPES lists Louisiana license number 023084, 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 Ronald Ernest Fields, MD prescribe under Medicare Part D?
In 2024, Ronald Ernest Fields, MD had 3,920 Medicare Part D claims for 558 beneficiaries; the average among critical care medicine (internal medicine) physician prescribers was 696. 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.