INTERNAL MEDICINE CLINIC OF GRENADA
NPI 1891912226
Specialist in Grenada, MS
About Internal Medicine Clinic Of Grenada NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
INTERNAL MEDICINE CLINIC OF GRENADA (NPI 1891912226) is a healthcare organization registered as a specialist in Grenada, Mississippi and active in the NPI registry since April 2007. The organization lists Joseph S Messina, Owner Physician, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 8
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Internal Medicine Clinic Of Grenada is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
4Medicare enrollment records show 4 clinicians reassign Medicare billing to Internal Medicine Clinic Of Grenada, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 3 within 10 miles. They are listed nearest first.
Clinicians, nearest first (4)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Joseph S Messina Jr MD's NPI number?
The NPI number for Joseph S Messina Jr MD is 1891912226. It was assigned to this organization in the NPPES registry on April 19, 2007. The provider is doing business as Internal Medicine Clinic Of Grenada.
Where is Joseph S Messina Jr MD located?
Joseph S Messina Jr MD is located at 1300 Sunset Drive Suite A, Grenada, MS 38901. The listed phone number is (662) 226-1646.
What is Joseph S Messina Jr MD's specialty?
The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.
Is Joseph S Messina Jr MD enrolled in Medicare?
Yes. Joseph S Messina Jr MD is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Joseph S Messina Jr MD?
According to the CMS Revalidation Reassignment List (October 2026 release), 4 clinicians in 2 Medicare specialties reassign their Medicare billing to Joseph S Messina Jr MD. A 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 the clinician's services. The largest specialties are Nurse Practitioner (3) and Internal Medicine (1). Of these, 1 practice at this address and 3 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Joseph S Messina Jr MD was last updated on April 24, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Internal Medicine Clinic Of Grenada · NPI 1891912226
Specialist organization in Grenada, Mississippi. Organization record, active in the CMS NPPES registry since April 19, 2007.
## Identity
- **NPI:** 1891912226 (Entity type: Organization)
- **Enumerated:** April 19, 2007
- **Primary specialty:** Specialist · taxonomy 174400000X
- **Legal business name:** Joseph S Messina Jr Md
- **Organization subpart:** No
- **Authorized official:** Joseph Messina, OWNER PHYSICIAN
## Practice location
- **Address:** 1300 SUNSET DRIVE, SUITE A, Grenada, MS 38901
- **Phone:** (662) 226-1646 · **Fax:** (662) 227-1599
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 4 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (3), Internal Medicine (1); 1 practice at this address and 3 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 24, 2008
- **Other identifiers:** Medicare PIN 110001808 (MS); Medicare PIN 500001641 (MS); Medicare UPIN Q27965 (MS); and 5 more
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Source: [NPI Profile](https://npiprofile.com/npi/1891912226) · Data from the CMS NPPES public registry.