Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
John F. Villacis, MD
Allergy Physician in Austin, TX · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1437115888
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name John F. Villacis
Credential MD
Sex Male
Practice address 12221 N Mopac Expy, Austin, TX, 78758
Phone (512) 901-4002
Fax (512) 901-3902
Enumeration date Apr 25, 2006
Last updated in NPPES Feb 9, 2022
Taxonomy & licenses
207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License L8548 (TX) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| P00157014 | Other | TX | RRMCR |
| 165659701 | Medicaid | TX | - |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What is the NPI number for John Villacis?
The National Provider Identifier (NPI) for John Villacis is 1437115888, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Villacis practice?
The practice location on file with NPPES is in Austin, TX. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Malik Merchant Internal Medicine Physician · Austin, TX NPI 1245238534 Meen Misra Internal Medicine Physician · Austin, TX NPI 1336134105 Rajeev Prakash Internal Medicine Physician · Austin, TX NPI 1730170960 Patricia Gunter Gynecology Physician · Austin, TX NPI 1265413199 Timothy Spence Hospitalist Physician · Austin, TX NPI 1710969415 Yolanda Clay-Po Internal Medicine Physician · Austin, TX NPI 1164405833 Francis Buzad Surgery Physician · Austin, TX NPI 1477530251 John Wilbanks Radiation Oncology Physician · Austin, TX NPI 1194795831
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-02-09.