GREGORY RONALD NUNEZ MD
NPI 1497869978
Internal Medicine in Columbus, MS
About Gregory Ronald Nunez Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GREGORY RONALD NUNEZ MD (NPI 1497869978) is an individual internal medicine provider in Columbus, Mississippi, licensed in Mississippi (11604) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Merit Health Natchez, and is a graduate of Howard University College Of Medicine (1982).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 5
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
Gregory Ronald Nunez Md 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
6Medicare enrollment records show Gregory Nunez reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Columbus, MS 39705
- Reassigned Medicare billing, Mississippi enrollment
- 45 clinicians in this Medicare group
Amory, MS 38821
- Reassigned Medicare billing, Mississippi enrollment
- 170 clinicians in this Medicare group
West, MS 39192
- Reassigned Medicare billing, Mississippi enrollment
- 1,932 clinicians in this Medicare group
Flowood, MS 39232
- Reassigned Medicare billing, Mississippi enrollment
- 87 clinicians in this Medicare group
Hattiesburg, MS 39402
- Reassigned Medicare billing, Mississippi enrollment
- 50 clinicians in this Medicare group
Natchez, MS 39120
- Reassigned Medicare billing, Mississippi enrollment
- 68 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.
Areas of Expertise CMS Part B claims 7
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Merit Health Natchez
Acute Care Hospitals · Natchez, MSCrossgates River Oaks Hospital
Acute Care Hospitals · Brandon, MSMississippi Baptist Medical Center
Acute Care Hospitals · Jackson, MSPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 39705 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Gregory Nunez's NPI number?
The NPI number for Gregory Nunez is 1497869978. It was assigned to this individual provider in the NPPES registry on August 19, 2006.
Where is Gregory Nunez located?
Gregory Nunez practices at 2104 5th St N Ste 6, Columbus, MS 39705. The listed phone number is (662) 327-9512.
What is Gregory Nunez's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Gregory Nunez enrolled in Medicare?
Yes. Gregory Nunez 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 Gregory Nunez's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Nunez reassigns Medicare benefits to 6 organizations: Baptist Memorial Hospital - Golden Triangle Inc. (Columbus, MS), Comprehensive Hospitalists Of Ms, LLC (Amory, MS), State Of Mississippi - University Of Mississippi Medical Center (West, MS), Mississippi Hma Hospitalists, LLC (Flowood, MS), Hattiesburg Hb Medical Services LLC (Hattiesburg, MS) and 1 more organization, listed in the Medicare section above. 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 Gregory Nunez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Gregory Nunez accept?
Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter of Alabama and Ambetter of Tennessee and 2 other insurers list Gregory Nunez 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.
Is Gregory Nunez affiliated with any hospitals?
According to CMS data, Gregory Nunez is affiliated with Merit Health Natchez, Crossgates River Oaks Hospital and Mississippi Baptist Medical Center.
When was this NPI record last updated?
The NPPES record for Gregory Nunez was last updated on November 27, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Gregory Ronald Nunez, MD · NPI 1497869978
Internal Medicine physician in Columbus, Mississippi. Individual provider, active in the CMS NPPES registry since August 19, 2006.
## Identity
- **NPI:** 1497869978 (Entity type: Individual)
- **Enumerated:** August 19, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 11604 (Mississippi)
- **Sole proprietor:** No
## Practice location
- **Address:** 2104 5TH ST N STE 6, Columbus, MS 39705-2236
- **Phone:** (662) 327-9512 · **Fax:** (662) 327-9633
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** 6 organizations under Medicare reassignment (form CMS-855R): Baptist Memorial Hospital - Golden Triangle Inc. (NPI 1417088832, Columbus, MS); Comprehensive Hospitalists Of Ms, LLC (NPI 1467856385, Amory, MS); State Of Mississippi - University Of Mississippi Medical Center (NPI 1194738393, West, MS); Mississippi Hma Hospitalists, LLC (NPI 1245578558, Flowood, MS); Hattiesburg Hb Medical Services LLC (NPI 1699456376, Hattiesburg, MS); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Howard University College Of Medicine, class of 1982
## Record status
- **NPPES last updated:** November 27, 2012
- **Other identifiers:** Medicare UPIN D00775; Medicare PIN 110000417 (MS); Medicare PIN 302I068502; and 2 more
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Source: [NPI Profile](https://npiprofile.com/npi/1497869978) · Data from the CMS NPPES public registry.