Quick answers
- Does John A. Larrinaga accept Medicare assignment?
- Yes. Medicare's clinician data says John A. Larrinaga accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does John A. Larrinaga see?
- In 2024, CMS data shows 389 Original Medicare patients and 843 services for John A. Larrinaga. This counts Original Medicare only and measures volume, not quality.
- What is John A. Larrinaga's NPI number?
- 1275507204. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for John A. Larrinaga, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 389 |
|---|---|
| Services billed to Medicare | 843 |
| Different services or procedures | 12 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Screening mammography (77067)331 services
- Screening 3d breast mammography (77063)325 services
- Limited ultrasound scan of 1 breast (76642)93 services
- Diagnostic mammography of both breasts (77066)41 services
- Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)39 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol68%
- Arthritis49%
- Anxiety27%
- Depression25%
- Osteoporosis25%
Hospitals where John A. Larrinaga works
Medicare's Facility Affiliation Data lists John A. Larrinaga at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Baylor Scott & White Texas Spine & Joint HospitalTyler, TX · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 450864
- University of Texas Health Science Center at TylerTyler, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 450690
- UT Health East Texas Tyler Regional HospitalTyler, TX · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 450083
Practice locations
Addresses where John A. Larrinaga is enrolled with Medicare (CMS data updated October 2, 2026).
- 11937 US Hwy 271Tyler, TX 75708 (903) 877‑7200
Group practices
Medicare enrollment lists John A. Larrinaga as a member of this group (CMS data updated October 2, 2026).
- University of Texas Health Science Center at Tyler-Facilty-Physician122 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Tyler
Clinicians with the same Medicare primary specialty in Tyler, TX — not a recommendation.
Other clinicians in University of Texas Health Science Center at Tyler-Facilty-Physician
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Southern California Keck School Of Medicine |
| Graduation year | 1988 (38 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1275507204 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians