Adriana Castillo, M.D.
NPI 1639580392 · Family Medicine Physician · San Marcos, TX
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Adriana Castillo, M.D. is a Family Medicine Physician provider in San Marcos, TX (NPI 1639580392).
Provider details
- NPI number
- 1639580392
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- R0371 (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
12 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
2,071 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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 277 | $16 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 260 | $120 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 242 | $10 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 209 | $13 |
| Urine Microalbumin (protein) Analysis82044 | 159 | $6 |
| Creatinine Level to Test for Kidney Function Or Muscle Injury82570 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 79 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 478 | 156 |
| Lisinopril | 260 | 92 |
| Levothyroxine Sodium | 260 | 86 |
| Metformin Hcl | 174 | 54 |
| Amlodipine Besylate | 157 | 57 |
| Tamsulosin Hcl | 151 | 44 |
| Hydrochlorothiazide | 146 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$483 across 20 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
- 2014-05-15
- Last updated
- 2021-12-10
- Certified
- 2021-12-10
Frequently asked questions
- What is Adriana Castillo's NPI number?
- Adriana Castillo's National Provider Identifier (NPI) is 1639580392, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Adriana Castillo's specialty?
- Adriana Castillo is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Adriana Castillo located?
- Adriana Castillo's practice location on file with NPPES is 601 Leah Ave Ste a, San Marcos, TX 78666-7849.
- What is Adriana Castillo's phone number?
- The practice phone number listed in the NPPES registry for Adriana Castillo is (512) 396-1000.
- Does Adriana Castillo accept Medicare?
- Adriana Castillo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Adriana Castillo's NPI active?
- Yes — Adriana Castillo's NPI (1639580392) is active in the NPPES registry as of the last update on 2021-12-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.