STEPHEN TREY MULLIS M.D.
NPI 1518295641
Internal Medicine - Rheumatology in Greenville, SC
About Stephen Trey Mullis M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STEPHEN TREY MULLIS M.D. (NPI 1518295641) is an individual rheumatology provider in Greenville, South Carolina, licensed in South Carolina (MD52401) and active in the NPI registry since December 2009. He is enrolled in Medicare PECOS, is affiliated with Prisma Health Oconee Memorial Hospital, and maintains a secondary practice location in Winston Salem.
NPPES Registry Identity
Specialties & Licenses 4
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
Stephen Trey Mullis 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 Reassignment
Medicare enrollment records show Stephen Mullis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Greenville, SC 29607
- Reassigned Medicare billing, South Carolina enrollment
- 3,281 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 36
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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Prisma Health Oconee Memorial Hospital
Acute Care Hospitals · Seneca, SCPrisma Health Greer Memorial Hospital
Acute Care Hospitals · Spartanburg, SCPrisma Health Hillcrest Hospital
Acute Care Hospitals · Simpsonville, SCPrisma Health Greenville Memorial Hospital
Acute Care Hospitals · Greenville, SCPrisma Health Patewood Hospital
Acute Care Hospitals · Greenville, SCPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 29607 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 18
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GREENVILLE, SC 29607
GREENVILLE, SC 29607
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 Stephen Mullis's NPI number?
The NPI number for Stephen Mullis is 1518295641. It was assigned to this individual provider in the NPPES registry on December 1, 2009.
Where is Stephen Mullis located?
Stephen Mullis practices at 1025 Verdae Blvd Ste A, Greenville, SC 29607. The listed phone number is (864) 240-5054.
What is Stephen Mullis's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.
Is Stephen Mullis enrolled in Medicare?
Yes. Stephen Mullis 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 Stephen Mullis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Stephen Mullis reassigns Medicare benefits to Prisma Health University Medical Group (Greenville, SC). 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 Stephen Mullis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Stephen Mullis accept?
Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of North Carolina, BlueCross BlueShield of South Carolina and InStil Health list Stephen Mullis 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 Stephen Mullis affiliated with any hospitals?
According to CMS data, Stephen Mullis is affiliated with Prisma Health Oconee Memorial Hospital, Prisma Health Greer Memorial Hospital, Prisma Health Hillcrest Hospital, Prisma Health Greenville Memorial Hospital and Prisma Health Patewood Hospital.
When was this NPI record last updated?
The NPPES record for Stephen Mullis was last updated on June 29, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.