DR. WILLIAM C CARR JR. M.D.
NPI 1154300135
Internal Medicine in Starkville, MS
About Dr. William C Carr Jr. M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM C CARR JR. M.D. (NPI 1154300135) is an individual internal medicine provider in Starkville, Mississippi, licensed in Mississippi (15856) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, is affiliated with Crawford Memorial Hospital, and is a graduate of Rush Medical College Of Rush University (1992).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 2
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. William C Carr Jr. 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 William Carr reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Sparta, IL 62286
- Reassigned Medicare billing, Illinois enrollment
- 67 clinicians in this Medicare group
Salem, IL 62881
- Reassigned Medicare billing, Illinois enrollment
- 44 clinicians in this Medicare group
Chesterfield, MO 63017
- Reassigned Medicare billing, Missouri enrollment
- Medicare enrollment name: Emergency Physicians Of St Lukes LLC
- 124 clinicians in this Medicare group
Newton, IL 62448
- Reassigned Medicare billing, Illinois enrollment
- Also billed through NPI 1265493720 (Illinois)
- 145 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 3
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Crawford Memorial Hospital
Critical Access Hospitals · Robinson, ILSparta Community Hospital
Critical Access Hospitals · Sparta, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 39759 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
STARKVILLE, MS 39759
STARKVILLE, MS 39759
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 William Carr's NPI number?
The NPI number for William Carr is 1154300135. It was assigned to this individual provider in the NPPES registry on January 10, 2006.
Where is William Carr located?
William Carr practices at 400 Hospital Rd, Starkville, MS 39759. The listed phone number is (662) 615-2503.
What is William Carr's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is William Carr enrolled in Medicare?
Yes. William Carr 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 William Carr's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Carr reassigns Medicare benefits to 4 organizations: Midwest Emergency Sparta, Inc (Sparta, IL), Salem Township Hospital (Salem, IL), Emergency Physicians Of St. Luke's, LLC (Chesterfield, MO) and Crawford Hospital District (Newton, IL). 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 William Carr's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Carr accept?
Health plans from Oscar Insurance Company list William Carr 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 William Carr affiliated with any hospitals?
According to CMS data, William Carr is affiliated with Crawford Memorial Hospital and Sparta Community Hospital.
When was this NPI record last updated?
The NPPES record for William Carr was last updated on September 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 days 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. William C Carr Jr., M.D. · NPI 1154300135
Internal Medicine physician in Starkville, Mississippi. Individual provider, active in the CMS NPPES registry since January 10, 2006.
## Identity
- **NPI:** 1154300135 (Entity type: Individual)
- **Enumerated:** January 10, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 15856 (Mississippi)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 400 HOSPITAL RD, Starkville, MS 39759-2163
- **Phone:** (662) 615-2503 · **Fax:** (662) 615-2554
## 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): Midwest Emergency Sparta, Inc (NPI 1194162370, Sparta, IL); Salem Township Hospital (NPI 1649830472, Salem, IL); Emergency Physicians Of St. Luke's, LLC (NPI 1215359815, Chesterfield, MO); Crawford Hospital District (NPI 1265309405, Newton, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Rush Medical College Of Rush University, class of 1992
## Record status
- **NPPES last updated:** September 29, 2026
- **Other identifiers:** Medicaid 00119628 (MS); Medicaid 1154300135 (MO)
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Source: [NPI Profile](https://npiprofile.com/npi/1154300135) · Data from the CMS NPPES public registry.