DR. SAMUEL MATHIS MD
NPI 1366853913
Family Medicine in Galveston, TX
About Dr. Samuel Mathis Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SAMUEL MATHIS MD (NPI 1366853913) is an individual family medicine provider in Galveston, Texas, licensed in Texas (Q8106) and active in the NPI registry since May 2014. He is enrolled in Medicare PECOS, is affiliated with University Of Texas Medical Branch Galveston, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 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. Samuel Mathis 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 Reassignment
Medicare enrollment records show Samuel Mathis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Galveston, TX 77555
- Reassigned Medicare billing, Texas enrollment
- 2,222 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Of Texas Medical Branch Galveston
Acute Care Hospitals · Galveston, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 77555 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.
Referred Medical Equipment & Supplies CMS DME claims
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.
GALVESTON, TX 77555
GALVESTON, TX 77555
GALVESTON, TX 77555
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 Samuel Mathis's NPI number?
The NPI number for Samuel Mathis is 1366853913. It was assigned to this individual provider in the NPPES registry on May 16, 2014.
Where is Samuel Mathis located?
Samuel Mathis practices at 400 Harborside Dr Ste 104, Galveston, TX 77555. The listed phone number is (409) 772-2166.
What is Samuel Mathis's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Samuel Mathis enrolled in Medicare?
Yes. Samuel Mathis 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 Samuel Mathis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Samuel Mathis reassigns Medicare benefits to Utmb Faculty Group Practice (Galveston, TX). 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 Samuel Mathis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Samuel Mathis accept?
Health plans from Blue Cross and Blue Shield of Texas and Oscar Insurance Company list Samuel Mathis 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 Samuel Mathis affiliated with any hospitals?
According to CMS data, Samuel Mathis is affiliated with University Of Texas Medical Branch Galveston.
When was this NPI record last updated?
The NPPES record for Samuel Mathis was last updated on March 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Dr. Samuel Mathis, MD · NPI 1366853913
Family Medicine physician in Galveston, Texas. Individual provider, active in the CMS NPPES registry since May 16, 2014.
## Identity
- **NPI:** 1366853913 (Entity type: Individual)
- **Enumerated:** May 16, 2014
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** Q8106 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 400 HARBORSIDE DR, STE 104, Galveston, TX 77555-0001
- **Phone:** (409) 772-2166 · **Fax:** (409) 772-2663
## 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:** Utmb Faculty Group Practice (NPI 1942241146, Galveston, TX), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Texas Medical Branch At Galveston, class of 2014
## Record status
- **NPPES last updated:** March 12, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1366853913) · Data from the CMS NPPES public registry.