MICHAEL ADRIAN SIMS MD
NPI 1962990259
Internal Medicine - Cardiovascular Disease in Hattiesburg, MS
About Michael Adrian Sims Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL ADRIAN SIMS MD (NPI 1962990259) is an individual cardiovascular disease provider in Hattiesburg, Mississippi, licensed in Mississippi (29165) and active in the NPI registry since April 2018. He is enrolled in Medicare PECOS, is affiliated with Forrest General Hospital, and maintains a secondary practice location in Laurel.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Michael Adrian Sims 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 Reassignment
Medicare enrollment records show Michael Sims reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Hattiesburg, MS 39401
- Reassigned Medicare billing, Mississippi enrollment
- 696 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Forrest General Hospital
Acute Care Hospitals · Hattiesburg, MSHighland Community Hospital
Acute Care Hospitals · Picayune, MSPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 39401 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 20
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 Michael Sims's NPI number?
The NPI number for Michael Sims is 1962990259. It was assigned to this individual provider in the NPPES registry on April 23, 2018.
Where is Michael Sims located?
Michael Sims practices at 415 S 28th Ave, Hattiesburg, MS 39401. The listed phone number is (601) 268-5800.
What is Michael Sims's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is Michael Sims enrolled in Medicare?
Yes. Michael Sims 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 organization bills Medicare for Michael Sims's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Sims reassigns Medicare benefits to Hattiesburg Clinic PA (Hattiesburg, MS). The 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 Michael Sims's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Michael Sims accept?
Health plans from UnitedHealthcare list Michael Sims 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 Michael Sims affiliated with any hospitals?
According to CMS data, Michael Sims is affiliated with Forrest General Hospital and Highland Community Hospital.
When was this NPI record last updated?
The NPPES record for Michael Sims was last updated on August 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.
# Michael Adrian Sims, MD · NPI 1962990259
Cardiovascular Disease physician in Hattiesburg, Mississippi. Individual provider, active in the CMS NPPES registry since April 23, 2018.
## Identity
- **NPI:** 1962990259 (Entity type: Individual)
- **Enumerated:** April 23, 2018
- **Primary specialty:** Internal Medicine - Cardiovascular Disease · taxonomy 207RC0000X
- **State license:** 29165 (Mississippi)
- **Sole proprietor:** No
## Practice location
- **Address:** 415 S 28TH AVE, Hattiesburg, MS 39401-7246
- **Phone:** (601) 268-5800
## 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:** Hattiesburg Clinic PA (NPI 1043392459, Hattiesburg, MS), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** August 17, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1962990259) · Data from the CMS NPPES public registry.