Quick answers
- Does Damaso A. Oliva Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says Damaso A. Oliva Jr. 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 Damaso A. Oliva Jr. see?
- In 2024, CMS data shows 120 Original Medicare patients and 696 services for Damaso A. Oliva Jr.. This counts Original Medicare only and measures volume, not quality.
- What is Damaso A. Oliva Jr.'s NPI number?
- 1659304350. 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 Damaso A. Oliva Jr., 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 | 120 |
|---|---|
| Services billed to Medicare | 696 |
| Different services or procedures | 7 |
| Participating Medicare provider | Yes |
| Average age of these patients | 57 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)368 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)216 services
- Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes (99221)31 services
- Hospital discharge day management, 30 minutes or less (99238)30 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)25 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).
- Depression64%
- High blood pressure63%
- Anxiety56%
- High cholesterol55%
- Arthritis27%
- Diabetes26%
Practice locations
Addresses where Damaso A. Oliva Jr. is enrolled with Medicare (CMS data updated October 2, 2026).
- 328 W Houston StSan Antonio, TX 78205 (210) 225‑3764
Specialties
- Psychiatryprimary
Other psychiatrists in San Antonio
Clinicians with the same Medicare primary specialty in San Antonio, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1987 (39 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1659304350 |
| 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