Ildefonso Rodriguez-Rivera, M.D.
NPI 1861783185 · Hematology & Oncology Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ildefonso Rodriguez-Rivera, M.D. is a Hematology & Oncology Physician provider in San Antonio, TX (NPI 1861783185).
Provider details
- NPI number
- 1861783185
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- BP10039991 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
15 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
847 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 328 | $86 |
| Injection of Additional New Drug Or Substance Into Vein96375 | 111 | $14 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 83 | $14 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 75 | $121 |
| Infusion Into a Vein for Hydration, Each Additional Hour96361 | 71 | $12 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, 1 Hour Or Less96365 | 64 | $59 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 25 | — |
| Gabapentin | 24 | — |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 14 | 11 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 13 | — |
| Diphenoxylate Hcl/Atropinebrand: Diphenoxylate-Atropine | 12 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,399 across 54 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 650 Commack RdCommack, NY 11725Phone: (631) 623-4000
- 1275 York AveNew York, NY 10065-6007Phone: (631) 623-4000
Registry dates
- Enumerated
- 2011-04-20
- Last updated
- 2021-10-04
- Certified
- 2021-10-04
Frequently asked questions
- What is Ildefonso Rodriguez-Rivera's NPI number?
- Ildefonso Rodriguez-Rivera's National Provider Identifier (NPI) is 1861783185, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ildefonso Rodriguez-Rivera's specialty?
- Ildefonso Rodriguez-Rivera is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Ildefonso Rodriguez-Rivera located?
- Ildefonso Rodriguez-Rivera's practice location on file with NPPES is 2829 Babcock Rd Ste 300, San Antonio, TX 78229-6011.
- What is Ildefonso Rodriguez-Rivera's phone number?
- The practice phone number listed in the NPPES registry for Ildefonso Rodriguez-Rivera is (210) 580-9500.
- Does Ildefonso Rodriguez-Rivera accept Medicare?
- Ildefonso Rodriguez-Rivera is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ildefonso Rodriguez-Rivera's NPI active?
- Yes — Ildefonso Rodriguez-Rivera's NPI (1861783185) is active in the NPPES registry as of the last update on 2021-10-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.