Quick answers
- Does Oscar A. Tamez accept Medicare assignment?
- Medicare's clinician data says Oscar A. Tamez may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Oscar A. Tamez see?
- In 2024, CMS data shows 116 Original Medicare patients and 3,875 services for Oscar A. Tamez. This counts Original Medicare only and measures volume, not quality.
- What is Oscar A. Tamez's NPI number?
- 1811986219. 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 Oscar A. Tamez, 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 | 116 |
|---|---|
| Services billed to Medicare | 3,875 |
| Different services or procedures | 33 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Test for allergy using allergenic extract (95004)2,702 services
- Professional service for multiple injections of allergen (95117)586 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)70 services
- Ct scan of face without contrast (70486)57 services
- Diagnostic exam of nasal passages using an endoscope (31231)41 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 cholesterol75%
- High blood pressure73%
- Arthritis43%
- Ischemic heart disease37%
- Anxiety30%
- Diabetes28%
Practice locations
Addresses where Oscar A. Tamez is enrolled with Medicare (CMS data updated October 2, 2026).
- 7201 Wyoming Springs Dr, Suite 100Round Rock, TX 78681
Specialties
- Otolaryngologyprimary
- Allergy/Immunologyalso
- Pediatric Medicinealso
- Sleep Medicinealso
Other ENT doctors in Round Rock
Clinicians with the same Medicare primary specialty in Round Rock, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical Branch At Galveston |
| Graduation year | 1993 (33 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1811986219 |
| 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
- 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