Quick answers
- Does Diana Aluyen accept Medicare assignment?
- Yes. Medicare's clinician data says Diana Aluyen 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 Diana Aluyen see?
- In 2024, CMS data shows 196 Original Medicare patients and 934 services for Diana Aluyen. This counts Original Medicare only and measures volume, not quality.
- What is Diana Aluyen's NPI number?
- 1801230487. 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 Diana Aluyen, 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 | 196 |
|---|---|
| Services billed to Medicare | 934 |
| Different services or procedures | 6 |
| Participating Medicare provider | Yes |
| Average age of these patients | 66 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)404 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)317 services
- Hospital discharge day management, more than 30 minutes (99239)120 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)61 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)28 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 cholesterol75%
- Chronic kidney disease65%
- Diabetes63%
- Ischemic heart disease42%
- Arthritis41%
Hospitals where Diana Aluyen works
Medicare's Facility Affiliation Data lists Diana Aluyen 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.
- Methodist HospitalSan Antonio, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 450388
Practice locations
Addresses where Diana Aluyen is enrolled with Medicare (CMS data updated October 2, 2026).
- 6700 W Ih, Suite 10San Antonio, TX 78201 (210) 736‑6700
- 7700 Floyd Curl DrSan Antonio, TX 78229 (210) 575‑4000
- 8026 Floyd Curl DrSan Antonio, TX 78229 (210) 575‑8110
Group practices
Medicare enrollment lists Diana Aluyen as a member of this group (CMS data updated October 2, 2026).
- Hospital Medicine Services of TX, PLLC378 clinicians in the group
Specialties
- Hospitalistprimary
Other hospitalists in San Antonio
Clinicians with the same Medicare primary specialty in San Antonio, TX — not a recommendation.
Other clinicians in Hospital Medicine Services of TX, PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical Branch At Galveston |
| Graduation year | 2013 (13 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1801230487 |
| 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