DR. ROBERT S FIELDS M.D.
NPI 1700984093
Radiology - Therapeutic Radiology in Baton Rouge, LA
About Dr. Robert S Fields M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ROBERT S FIELDS M.D. (NPI 1700984093) is an individual therapeutic radiology provider in Baton Rouge, Louisiana, licensed in Louisiana (06827R) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1975).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Robert S Fields M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
4Medicare enrollment records show Robert Fields reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Baton Rouge, LA 70809
- Reassigned Medicare billing, Louisiana enrollment
- 120 clinicians in this Medicare group
Baton Rouge, LA 70809
- Reassigned Medicare billing, Louisiana enrollment
- 120 clinicians in this Medicare group
Gonzales, LA 70737
- Reassigned Medicare billing, Louisiana enrollment
- 41 clinicians in this Medicare group
Zachary, LA 70791
- Reassigned Medicare billing, Louisiana enrollment
- 14 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Other Providers at the Same Location NPPES 13
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BATON ROUGE, LA 70809
BATON ROUGE, LA 70809
BATON ROUGE, LA 70809
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Robert Fields's NPI number?
The NPI number for Robert Fields is 1700984093. It was assigned to this individual provider in the NPPES registry on September 20, 2006.
Where is Robert Fields located?
Robert Fields practices at 4950 Essen Lane, Baton Rouge, LA 70809. The listed phone number is (225) 767-0847.
What is Robert Fields's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Therapeutic Radiology, with taxonomy code 2085R0203X.
Is Robert Fields enrolled in Medicare?
Yes. Robert Fields is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Robert Fields's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Robert Fields reassigns Medicare benefits to 4 organizations: Mary Bird Perkins Cancer Center (Baton Rouge, LA), Baton Rouge General Medical Center (Baton Rouge, LA), St. Elizabeth-Mary Bird Perkins Cancer Center, L.L.C. (Gonzales, LA) and Radiation Oncology Center - Zachary (Zachary, LA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Robert Fields's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Robert Fields accept?
Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Blue Cross and Blue Shield of Louisiana and 2 other insurers list Robert Fields as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Robert Fields was last updated on December 21, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Robert S Fields, M.D. · NPI 1700984093
Therapeutic Radiology physician in Baton Rouge, Louisiana. Individual provider, active in the CMS NPPES registry since September 20, 2006.
## Identity
- **NPI:** 1700984093 (Entity type: Individual)
- **Enumerated:** September 20, 2006
- **Primary specialty:** Radiology - Therapeutic Radiology · taxonomy 2085R0203X
- **State license:** 06827R (Louisiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 4950 ESSEN LANE, Baton Rouge, LA 70809-3482
- **Phone:** (225) 767-0847 · **Fax:** (225) 766-1417
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Mary Bird Perkins Cancer Center (NPI 1295833580, Baton Rouge, LA); Baton Rouge General Medical Center (NPI 1407346984, Baton Rouge, LA); St. Elizabeth-Mary Bird Perkins Cancer Center, L.L.C. (NPI 1619155124, Gonzales, LA); Radiation Oncology Center - Zachary (NPI 1306355102, Zachary, LA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1975
## Record status
- **NPPES last updated:** December 21, 2009
- **Other identifiers:** Medicaid 1353507 (LA); Medicare PIN 505467290 (LA); Medicare UPIN B62472 (LA)
---
Source: [NPI Profile](https://npiprofile.com/npi/1700984093) · Data from the CMS NPPES public registry.