SAYF YASSIN M.D.
NPI 1043605371
Internal Medicine in Round Rock, TX
About Sayf Yassin M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SAYF YASSIN M.D. (NPI 1043605371) is an individual internal medicine provider in Round Rock, Texas, licensed in Texas (R8293) and active in the NPI registry since April 2015. He is enrolled in Medicare PECOS, is affiliated with Laredo Medical Center, and maintains a secondary practice location in Murfreesboro.
NPPES Registry Identity
Specialties & Licenses
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
Sayf Yassin 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
10Medicare enrollment records show Sayf Yassin reassigns Medicare billing to 10 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Cedar Park, TX 78613
- Reassigned Medicare billing, Texas enrollment
- 828 clinicians in this Medicare group
Austin, TX 78738
- Reassigned Medicare billing, Texas enrollment
- 75 clinicians in this Medicare group
Austin, TX 78738
- Reassigned Medicare billing, Texas enrollment
- 111 clinicians in this Medicare group
Kerrville, TX 78028
- Reassigned Medicare billing, Texas enrollment
- 149 clinicians in this Medicare group
Humble, TX 77338
- Reassigned Medicare billing, Texas enrollment
- 2,009 clinicians in this Medicare group
Angleton, TX 77515
- Reassigned Medicare billing, Texas enrollment
- 37 clinicians in this Medicare group
Dallas, TX 75231
- Reassigned Medicare billing, Texas enrollment
- 1,208 clinicians in this Medicare group
Laredo, TX 78041
- Reassigned Medicare billing, Texas enrollment
- 94 clinicians in this Medicare group
Tulsa, OK 74146
- Reassigned Medicare billing, Texas enrollment
- 100 clinicians in this Medicare group
Franklin, TN 37067
- Reassigned Medicare billing, Tennessee enrollment
- 1,304 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 6
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.
Laredo Medical Center
Acute Care Hospitals · Laredo, TXAscension Seton Williamson
Acute Care Hospitals · Round Rock, TXPhysician 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.
Referred Medical Equipment & Supplies CMS DME claims 3
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.
ROUND ROCK, TX 78665
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 Sayf Yassin's NPI number?
The NPI number for Sayf Yassin is 1043605371. It was assigned to this individual provider in the NPPES registry on April 2, 2015.
Where is Sayf Yassin located?
Sayf Yassin practices at 201 Seton Pkwy, Round Rock, TX 78665. The listed phone number is (512) 324-4170.
What is Sayf Yassin's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Sayf Yassin enrolled in Medicare?
Yes. Sayf Yassin 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 Sayf Yassin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sayf Yassin reassigns Medicare benefits to 10 organizations: Usacs Integrated Acute Care Services Of Texas, PLLC (Cedar Park, TX), Aco Jason Martin Medical Consulting (Austin, TX), Jason Martin Medical Consulting LLC (Austin, TX), Comprehensive Hospitalist Services Of Texas PLLC (Kerrville, TX), Hospitalist Medicine Physicians Of Texas, PLLC (Humble, TX) and 5 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 Sayf Yassin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sayf Yassin accept?
Health plans from Blue Cross and Blue Shield of Texas, CHRISTUS Health Plan, Oscar Insurance Company and Sendero Health Plans, Local Nonprofit list Sayf Yassin 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 Sayf Yassin affiliated with any hospitals?
According to CMS data, Sayf Yassin is affiliated with Laredo Medical Center and Ascension Seton Williamson.
When was this NPI record last updated?
The NPPES record for Sayf Yassin was last updated on February 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.
# Sayf Yassin, M.D. · NPI 1043605371
Internal Medicine physician in Round Rock, Texas. Individual provider, active in the CMS NPPES registry since April 2, 2015.
## Identity
- **NPI:** 1043605371 (Entity type: Individual)
- **Enumerated:** April 2, 2015
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** R8293 (Texas)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 201 SETON PKWY, Round Rock, TX 78665-8000
- **Phone:** (512) 324-4170
## 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:** 10 organizations under Medicare reassignment (form CMS-855R): Usacs Integrated Acute Care Services Of Texas, PLLC (NPI 1801300322, Cedar Park, TX); Aco Jason Martin Medical Consulting (NPI 1881578961, Austin, TX); Jason Martin Medical Consulting LLC (NPI 1851736243, Austin, TX); Comprehensive Hospitalist Services Of Texas PLLC (NPI 1356655062, Kerrville, TX); Hospitalist Medicine Physicians Of Texas, PLLC (NPI 1629307095, Humble, TX); and 5 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2004
## Record status
- **NPPES last updated:** February 19, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1043605371) · Data from the CMS NPPES public registry.