TIMOTHY MCCOWAN MD
NPI 1689765554
Radiology - Vascular & Interventional Radiology in Little Rock, AR
About Timothy Mccowan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TIMOTHY MCCOWAN MD (NPI 1689765554) is an individual vascular & interventional radiology provider in Little Rock, Arkansas, licensed in Mississippi (19869) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
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 (PECOS)
Timothy Mccowan Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Timothy Mccowan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Grenada, MS 38901
- Reassigned Medicare billing, Mississippi enrollment
- 1,932 clinicians in this Medicare group
Macon, MS 39341
- Reassigned Medicare billing, Mississippi enrollment
- 24 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 4
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 72205 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.
LITTLE ROCK, AR 72205
LITTLE ROCK, AR 72205
LITTLE ROCK, AR 72205
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 Timothy Mccowan's NPI number?
The NPI number for Timothy Mccowan is 1689765554. It was assigned to this individual provider in the NPPES registry on September 27, 2006.
Where is Timothy Mccowan located?
Timothy Mccowan practices at 4301 W Markham St # 783, Little Rock, AR 72205. The listed phone number is (501) 686-8000.
What is Timothy Mccowan's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Vascular & Interventional Radiology, with taxonomy code 2085R0204X.
Is Timothy Mccowan enrolled in Medicare?
Yes. Timothy Mccowan is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Timothy Mccowan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Timothy Mccowan reassigns Medicare benefits to 2 organizations: State Of Mississippi-University Of Mississippi Medical Center (Grenada, MS) and Noxubee General Critical Access Hospital (Macon, MS). 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 Timothy Mccowan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Timothy Mccowan 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 Timothy Mccowan 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.
When was this NPI record last updated?
The NPPES record for Timothy Mccowan was last updated on March 12, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Timothy Mccowan, MD · NPI 1689765554
Vascular & Interventional Radiology physician in Little Rock, Arkansas. Individual provider, active in the CMS NPPES registry since September 27, 2006.
## Identity
- **NPI:** 1689765554 (Entity type: Individual)
- **Enumerated:** September 27, 2006
- **Primary specialty:** Radiology - Vascular & Interventional Radiology · taxonomy 2085R0204X
- **State license:** 19869 (Mississippi)
- **Sole proprietor:** No
## Practice location
- **Address:** 4301 W MARKHAM ST # 783, Little Rock, AR 72205-7101
- **Phone:** (501) 686-8000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): State Of Mississippi-University Of Mississippi Medical Center (NPI 1932538527, Grenada, MS); Noxubee General Critical Access Hospital (NPI 1477793305, Macon, MS) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 12, 2014
- **Other identifiers:** Medicare UPIN D16987; Medicare PIN 333049YWZ1 (MS); Medicaid 110087001 (AR); and 2 more
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Source: [NPI Profile](https://npiprofile.com/npi/1689765554) · Data from the CMS NPPES public registry.