DR. MARK W COBURN MD
NPI 1811035694
Radiology - Diagnostic Radiology in Round Rock, TX
About Dr. Mark W Coburn Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARK W COBURN MD (NPI 1811035694) is an individual diagnostic radiology provider in Round Rock, Texas, licensed in Texas (N4357) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS, is affiliated with Memorial Hermann Hospital System, and maintains a secondary practice location in Tonasket.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 4
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. Mark W Coburn 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 Reassignments
20Medicare enrollment records show Mark Coburn reassigns Medicare billing to 20 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Austin, TX 78727
- Reassigned Medicare billing, Texas enrollment
- 187 clinicians in this Medicare group
Shenandoah, TX 77380
- Reassigned Medicare billing, Texas enrollment
- 1,278 clinicians in this Medicare group
Little Rock, AR 72205
- Reassigned Medicare billing, Texas enrollment
- 6 clinicians in this Medicare group
Dickson, TN 37055
- Reassigned Medicare billing, Texas enrollment
- 29 clinicians in this Medicare group
Clarksville, TN 37040
- Reassigned Medicare billing, Texas enrollment
- 10 clinicians in this Medicare group
Nashville, TN 37203
- Reassigned Medicare billing, Texas and Utah enrollments
- 86 clinicians in this Medicare group
Columbus, OH 43215
- Reassigned Medicare billing, Texas enrollment
- 41 clinicians in this Medicare group
Los Angeles, CA 90036
- Reassigned Medicare billing, Texas enrollment
- 8 clinicians in this Medicare group
Gilroy, CA 95020
- Reassigned Medicare billing, California enrollment
- 2,460 clinicians in this Medicare group
Santa Rosa, CA 95405
- Reassigned Medicare billing, Texas and Utah enrollments
- 12 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 55
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Memorial Hermann Hospital System
Acute Care Hospitals · Houston, TXYakima Valley Memorial
Acute Care Hospitals · Yakima, WAOverlake Hospital Medical Center
Acute Care Hospitals · Bellevue, WAOlympic Medical Center
Acute Care Hospitals · Port Angeles, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 78665 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ROUND ROCK, TX 78665
ROUND ROCK, TX 78665
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 Mark Coburn's NPI number?
The NPI number for Mark Coburn is 1811035694. It was assigned to this individual provider in the NPPES registry on February 2, 2007.
Where is Mark Coburn located?
Mark Coburn practices at 300 University Blvd, Round Rock, TX 78665. The listed phone number is (512) 509-0100.
What is Mark Coburn's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Mark Coburn enrolled in Medicare?
Yes. Mark Coburn 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 Mark Coburn's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Coburn reassigns Medicare benefits to 20 organizations: Austin Radiological Association (Austin, TX), Singleton Associates PA (Shenandoah, TX), Radiology Associates PA (Little Rock, AR), Middle Tennessee Imaging LLC (Dickson, TN), Clarksville Imaging Center LLC (Clarksville, TN) and 15 more organizations, listed in the Medicare section above. 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 Mark Coburn's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Coburn accept?
Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Buckeye Health Plan and Ambetter from Louisiana Healthcare Connections and 11 other insurers list Mark Coburn 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 Mark Coburn affiliated with any hospitals?
According to CMS data, Mark Coburn is affiliated with Memorial Hermann Hospital System, Yakima Valley Memorial, Overlake Hospital Medical Center and Olympic Medical Center.
When was this NPI record last updated?
The NPPES record for Mark Coburn was last updated on December 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.