Daniel Santillano, MD
NPI 1508903899 · Internal Medicine Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Daniel Santillano, MD is a Internal Medicine Physician provider in San Antonio, TX (NPI 1508903899).
Provider details
- NPI number
- 1508903899
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- N0434 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
945 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 429 | $105 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 264 | $70 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 94 | $101 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 82 | $152 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 64 | $116 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 12 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 73 | 41 |
| Rosuvastatin Calcium | 54 | 37 |
| Tramadol Hcl | 53 | 53 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 40 | 40 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 35 | 14 |
| Amiodarone Hcl | 30 | 27 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,876 across 17 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
Registry dates
- Enumerated
- 2007-01-30
- Last updated
- 2024-05-03
- Certified
- 2024-05-03
Frequently asked questions
- What is Daniel Santillano's NPI number?
- Daniel Santillano's National Provider Identifier (NPI) is 1508903899, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Daniel Santillano's specialty?
- Daniel Santillano is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Daniel Santillano located?
- Daniel Santillano's practice location on file with NPPES is 1150 N Loop 1604 W # 108-402, San Antonio, TX 78248-4552.
- What is Daniel Santillano's phone number?
- The practice phone number listed in the NPPES registry for Daniel Santillano is (210) 558-6288.
- Does Daniel Santillano accept Medicare?
- Daniel Santillano is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Daniel Santillano's NPI active?
- Yes — Daniel Santillano's NPI (1508903899) is active in the NPPES registry as of the last update on 2024-05-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.