DIANA M. GUERRA MD
NPI 1023200623
Internal Medicine - Critical Care Medicine in Sugar Land, TX
About Diana M. Guerra Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DIANA M. GUERRA MD (NPI 1023200623) is an individual critical care medicine provider in Sugar Land, Texas, licensed in Texas (P2864) and active in the NPI registry since August 2007. She is enrolled in Medicare PECOS, is affiliated with Houston Methodist Hospital, and maintains a secondary practice location in College Station.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Location 1
Other Identifiers 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
Diana M. Guerra 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
5Medicare enrollment records show Diana Guerra reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Houston, TX 77030
- Reassigned Medicare billing, Texas enrollment
- 1,579 clinicians in this Medicare group
Houston, TX 77030
- Reassigned Medicare billing, Texas enrollment
- 2,296 clinicians in this Medicare group
Houston, TX 77030
- Reassigned Medicare billing, Texas enrollment
- 2,554 clinicians in this Medicare group
Houston, TX 77030
- Reassigned Medicare billing, Texas enrollment
- 2,407 clinicians in this Medicare group
College Station, TX 77840
- Reassigned Medicare billing, Texas enrollment
- 2,795 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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Houston Methodist Hospital
Acute Care Hospitals · Houston, TXHouston Methodist Sugarland Hospital
Acute Care Hospitals · Sugar Land, TXBaylor Scott & White Medical Center- College Stati
Acute Care Hospitals · College Station, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 77479 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Diana Guerra's NPI number?
The NPI number for Diana Guerra is 1023200623. It was assigned to this individual provider in the NPPES registry on August 16, 2007.
Where is Diana Guerra located?
Diana Guerra practices at 16811 Southwest Freeway Suite 300, Sugar Land, TX 77479. The listed phone number is (346) 874-3458.
What is Diana Guerra's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Diana Guerra enrolled in Medicare?
Yes. Diana Guerra 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 Diana Guerra's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Diana Guerra reassigns Medicare benefits to 5 organizations: Houston Methodist Specialty Physicians (Houston, TX), Baylor College Of Medicine (Houston, TX), Baylor College Of Medicine (Houston, TX), Tmh Physician Associates PLLC (Houston, TX) and Scott & White Clinic (College Station, TX). 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 Diana Guerra's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Diana Guerra accept?
Health plans from Blue Cross and Blue Shield of Texas list Diana Guerra 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 Diana Guerra affiliated with any hospitals?
According to CMS data, Diana Guerra is affiliated with Houston Methodist Hospital, Houston Methodist Sugarland Hospital and Baylor Scott & White Medical Center- College Stati.
When was this NPI record last updated?
The NPPES record for Diana Guerra was last updated on August 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Diana M. Guerra, MD · NPI 1023200623
Critical Care Medicine physician in Sugar Land, Texas. Individual provider, active in the CMS NPPES registry since August 16, 2007.
## Identity
- **NPI:** 1023200623 (Entity type: Individual)
- **Enumerated:** August 16, 2007
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** P2864 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 16811 SOUTHWEST FREEWAY SUITE 300, Sugar Land, TX 77479-4728
- **Phone:** (346) 874-3458
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Houston Methodist Specialty Physicians (NPI 1902614332, Houston, TX); Baylor College Of Medicine (NPI 1104867175, Houston, TX); Baylor College Of Medicine (NPI 1881026664, Houston, TX); Tmh Physician Associates PLLC (NPI 1275779225, Houston, TX); Scott & White Clinic (NPI 1922061993, College Station, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1995
## Record status
- **NPPES last updated:** August 30, 2026
- **Other identifiers:** Medicaid 299091308 (TX); Other 8FT835 (TX)
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Source: [NPI Profile](https://npiprofile.com/npi/1023200623) · Data from the CMS NPPES public registry.