John Villacis, MD
NPI 1437115888 · Allergy Physician · Austin, TX
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Villacis, MD is a Allergy Physician provider in Austin, TX (NPI 1437115888).
Provider details
- NPI number
- 1437115888
- Entity type
- Individual
- Primary specialty
- Allergy PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- L8548 (TX)
Specialties & taxonomies
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
20 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
654 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) |
|---|---|---|
| Professional Service for Preparation and Provision of 1 Or More Antigens95165 | 240 | $15 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 94 | $90 |
| Professional Service for Multiple Injections of Allergen95117 | 82 | $13 |
| Professional Service for Single Injection of Allergen95115 | 71 | $11 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 46 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 39 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 54 | 24 |
| Azelastine Hcl | 52 | 25 |
| Ipratropium Bromide | 47 | 20 |
| Prednisone | 46 | 23 |
| Montelukast Sodium | 43 | 16 |
| Fluticasone/Vilanterolbrand: Breo Ellipta | 29 | — |
| Omeprazole | 19 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,948 across 68 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
- 2006-04-25
- Last updated
- 2022-02-09
Frequently asked questions
- What is John Villacis's NPI number?
- John Villacis's National Provider Identifier (NPI) is 1437115888, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Villacis's specialty?
- John Villacis is listed in the NPPES registry with a primary specialty of Allergy Physician (Allopathic & Osteopathic Physicians).
- Where is John Villacis located?
- John Villacis's practice location on file with NPPES is 12221 N Mopac Expy, Austin, TX 78758-2401.
- What is John Villacis's phone number?
- The practice phone number listed in the NPPES registry for John Villacis is (512) 901-4002.
- Does John Villacis accept Medicare?
- John Villacis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Villacis's NPI active?
- Yes — John Villacis's NPI (1437115888) is active in the NPPES registry as of the last update on 2022-02-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.