Quick answers
- Does Arun R. Rao accept Medicare assignment?
- Yes. Medicare's clinician data says Arun R. Rao 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 Arun R. Rao see?
- In 2024, CMS data shows 259 Original Medicare patients and 112,871 services for Arun R. Rao. This counts Original Medicare only and measures volume, not quality.
- What is Arun R. Rao's NPI number?
- 1174547590. 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 Arun R. Rao, 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 | 259 |
|---|---|
| Services billed to Medicare | 112,871 |
| Different services or procedures | 141 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Injection, iron sucrose, 1 mg (J1756)13,200 services
- Injection, fosaprepitant, 1 mg (J1453)7,950 services
- Injection, epoetin alfa-epbx, biosimilar, (retacrit) (for non-esrd use), 1000 units (Q5106)1,330 services
- Injection, dexamethasone sodium phosphate, 1 mg (J1100)1,030 services
- Injection, palonosetron hcl, 25 mcg (J2469)690 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%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)47%
- Chronic kidney disease44%
- Diabetes43%
- Arthritis39%
Hospitals where Arun R. Rao works
Medicare's Facility Affiliation Data lists Arun R. Rao 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.
- Baptist Medical CenterSan Antonio, TX · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 450058
- Connally Memorial Medical CenterFloresville, TX · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 450108
- Methodist HospitalSan Antonio, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 450388
Practice locations
Addresses where Arun R. Rao is enrolled with Medicare (CMS data updated October 2, 2026).
- 3327 Research Plz, Suite 102San Antonio, TX 78235 (210) 337‑4494
Group practices
Medicare enrollment lists Arun R. Rao as a member of this group (CMS data updated October 2, 2026).
- Texas Oncology PA1,014 clinicians in the group
Specialties
- Hematology/Oncologyprimary
- Medical Oncologyalso
Other hematologist-oncologists in San Antonio
Clinicians with the same Medicare primary specialty in San Antonio, TX — not a recommendation.
Other clinicians in Texas Oncology PA
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1985 (41 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1174547590 |
| 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