MARK CAL SHAW M.D.
NPI 1881644938
Family Medicine in Bernice, LA
About Mark Cal Shaw M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK CAL SHAW M.D. (NPI 1881644938) is an individual family medicine provider in Bernice, Louisiana, licensed in Louisiana (MD023225) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Ut Health East Texas Jacksonville Hospital, and is a graduate of University Of Texas Medical School At Houston (1996).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 3
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
Mark Cal Shaw 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
6Medicare enrollment records show Mark Shaw reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Nacogdoches, TX 75961
- Reassigned Medicare billing, Texas enrollment
- 54 clinicians in this Medicare group
Nacogdoches, TX 75961
- Reassigned Medicare billing, Texas enrollment
- 41 clinicians in this Medicare group
Nacogdoches, TX 75961
- Reassigned Medicare billing, Texas enrollment
- 109 clinicians in this Medicare group
Lufkin, TX 75904
- Reassigned Medicare billing, Texas enrollment
- 89 clinicians in this Medicare group
Pasadena, TX 77505
- Reassigned Medicare billing, Texas enrollment
- 644 clinicians in this Medicare group
Gainesville, TX 76240
- Reassigned Medicare billing, Texas enrollment
- 1,193 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.
Ut Health East Texas Jacksonville Hospital
Acute Care Hospitals · Jacksonville, TXNacogdoches Memorial Hospital
Acute Care Hospitals · Nacogdoches, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 71222 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 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Shaw's NPI number?
The NPI number for Mark Shaw is 1881644938. It was assigned to this individual provider in the NPPES registry on May 11, 2006.
Where is Mark Shaw located?
Mark Shaw practices at 402 Second St., Bernice, LA 71222. The listed phone number is (318) 285-9066.
What is Mark Shaw's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Mark Shaw enrolled in Medicare?
Yes. Mark Shaw 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 Shaw's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Shaw reassigns Medicare benefits to 6 organizations: Lone Star Emergency Services Of East Texas PLLC (Nacogdoches, TX), Lone Star Integrated Acute Care Of East Texas PLLC (Nacogdoches, TX), Ess Of Nacogdoches LLC (Nacogdoches, TX), Angelina Emergency Medicine Associates PA (Lufkin, TX), Integrative Emergency Services Physician Group-Houston PLLC (Pasadena, TX) and 1 more organization, 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 Shaw's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Shaw accept?
Health plans from Blue Cross and Blue Shield of Texas list Mark Shaw 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 Shaw affiliated with any hospitals?
According to CMS data, Mark Shaw is affiliated with Ut Health East Texas Jacksonville Hospital and Nacogdoches Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Mark Shaw was last updated on October 7, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Mark Cal Shaw, M.D. · NPI 1881644938
Family Medicine physician in Bernice, Louisiana. Individual provider, active in the CMS NPPES registry since May 11, 2006.
## Identity
- **NPI:** 1881644938 (Entity type: Individual)
- **Enumerated:** May 11, 2006
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** MD023225 (Louisiana)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 402 SECOND ST., Bernice, LA 71222
- **Phone:** (318) 285-9066 · **Fax:** (318) 285-9065
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Lone Star Emergency Services Of East Texas PLLC (NPI 1124952353, Nacogdoches, TX); Lone Star Integrated Acute Care Of East Texas PLLC (NPI 1669306890, Nacogdoches, TX); Ess Of Nacogdoches LLC (NPI 1780139956, Nacogdoches, TX); Angelina Emergency Medicine Associates PA (NPI 1518397298, Lufkin, TX); Integrative Emergency Services Physician Group-Houston PLLC (NPI 1801458708, Pasadena, TX); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Texas Medical School At Houston, class of 1996
## Record status
- **NPPES last updated:** October 7, 2015
- **Other identifiers:** Medicaid 1495611 (LA); Medicare ID-Type Unspecified 5Y590 (LA); Medicare UPIN G51344 (LA)
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Source: [NPI Profile](https://npiprofile.com/npi/1881644938) · Data from the CMS NPPES public registry.