DR. CHRISTOPHER DAVID DIAZ M.D.
NPI 1376530188
Emergency Medicine in Tyler, TX
About Dr. Christopher David Diaz M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CHRISTOPHER DAVID DIAZ M.D. (NPI 1376530188) is an individual emergency medicine provider in Tyler, Texas, licensed in Texas (N9692) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, is affiliated with Chi St Lukes Health Memorial Lufkin, and is a graduate of University Of Toledo College Of Medicine (2003).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 22
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. Christopher David Diaz 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 Christopher Diaz reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Tyler, TX 75701
- Reassigned Medicare billing, Texas enrollment
- 547 clinicians in this Medicare group
Tyler, TX 75702
- Reassigned Medicare billing, Texas enrollment
- 2,745 clinicians in this Medicare group
Waxahachie, TX 75165
- Reassigned Medicare billing, Texas enrollment
- Medicare enrollment name: Scott & White Clinic
- 2,795 clinicians in this Medicare group
Texarkana, TX 75501
- Reassigned Medicare billing, Texas enrollment
- 48 clinicians in this Medicare group
Gainesville, TX 76240
- Reassigned Medicare billing, Texas enrollment
- 1,193 clinicians in this Medicare group
Pasadena, TX 77505
- Reassigned Medicare billing, Texas enrollment
- 644 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.
Chi St Lukes Health Memorial Lufkin
Acute Care Hospitals · Lufkin, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 75701 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.
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 Christopher Diaz's NPI number?
The NPI number for Christopher Diaz is 1376530188. It was assigned to this individual provider in the NPPES registry on October 6, 2005.
Where is Christopher Diaz located?
Christopher Diaz practices at 800 E Dawson St, Tyler, TX 75701. The listed phone number is (903) 593-8441.
What is Christopher Diaz's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Christopher Diaz enrolled in Medicare?
Yes. Christopher Diaz 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 Christopher Diaz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Christopher Diaz reassigns Medicare benefits to 6 organizations: Mother Frances Hospital Regional Health Care Center (Tyler, TX), Christus Trinity Clinic Texas (Tyler, TX), Scott And White Clinic (Waxahachie, TX), Texarkana Emergency Physicians PLLC (Texarkana, TX), Acs Primary Care Physicians Southwest, PA (Gainesville, 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 Christopher Diaz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Christopher Diaz accept?
Health plans from Blue Cross and Blue Shield of Texas, CHRISTUS Health Plan, Oscar Insurance Company and UnitedHealthcare list Christopher Diaz 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 Christopher Diaz affiliated with any hospitals?
According to CMS data, Christopher Diaz is affiliated with Chi St Lukes Health Memorial Lufkin.
When was this NPI record last updated?
The NPPES record for Christopher Diaz was last updated on July 10, 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.
# Dr. Christopher David Diaz, M.D. · NPI 1376530188
Emergency Medicine physician in Tyler, Texas. Individual provider, active in the CMS NPPES registry since October 6, 2005.
## Identity
- **NPI:** 1376530188 (Entity type: Individual)
- **Enumerated:** October 6, 2005
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** N9692 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 800 E DAWSON ST, Tyler, TX 75701-2036
- **Phone:** (903) 593-8441
## 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): Mother Frances Hospital Regional Health Care Center (NPI 1679578439, Tyler, TX); Christus Trinity Clinic Texas (NPI 1285684225, Tyler, TX); Scott And White Clinic (NPI 1821475153, Waxahachie, TX); Texarkana Emergency Physicians PLLC (NPI 1871813345, Texarkana, TX); Acs Primary Care Physicians Southwest, PA (NPI 1538101019, Gainesville, TX); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Toledo College Of Medicine, class of 2003
## Record status
- **NPPES last updated:** July 10, 2015
- **Other identifiers:** Medicare PIN P00969641 (TX); Medicaid 283196801 (TX); Medicaid 283196803 (TX); and 19 more
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Source: [NPI Profile](https://npiprofile.com/npi/1376530188) · Data from the CMS NPPES public registry.