NPI age
19 years
Enumerated 2006-07-04
● Active Type 2 · Organization
O'Neill & Associates P.A.
O'Neill & Associates P.A. is 1 of 4038 specialist organizations in Texas.
Primary specialty
Specialist
Practice locations
1
0 secondary on file
Status
Active
No deactivations on record
Authorized official
Belasco
President
Last NPPES update
2008-07-10
Source: monthly bulk 2026-05
How this organization compares
Across 4038 active specialist providers in Texas.
NPI age
19 years
≈ at median (18 yr)
Practice locations
1
0 secondary on file
Subspecialties
0
NPI lifetime · 2006 → 2026
2006-07Enumerated in NPPES
2006
2026
Where they practice
Primary practice location
1303 McCullough Ave, 125
San Antonio, TX 782125609
Mailing address
1303 McCullough Ave, 125
San Antonio, TX 782125609
Authorized official
Marvin Sam Belasco, M.D.
President
📞 2102235543
Individual providers at this organization
20 individual providers on file at this primary practice address.
- John Anes, M D Internal Medicine NPI 1811981350
- Walter Bain, MD Otolaryngology NPI 1194890863
- Ana Ballester-Fiallo, MD Internal Medicine NPI 1811007412
- Jeannie Baquero, M.D. Internal Medicine NPI 1255301149
- Richard Becker, M.D. Internal Medicine NPI 1306985676
- Neera Bhatia, MD Obstetrics & Gynecology NPI 1760428619
- Daniel Calderon, M.D. Obstetrics & Gynecology NPI 1083603252
- Elisa Carroll, M.D. Obstetrics & Gynecology NPI 1962491159
- Victor Casiano, M.D. Obstetrics & Gynecology NPI 1679562862
- Jose Cavazos, M.D. Family Medicine NPI 1285626853
- Francisco Cervantes, M.D. Family Medicine NPI 1669480752
- Ronald Davis, M.D. Dermatology NPI 1497770572
- Ralph Delarosa, MD Family Medicine NPI 1427075019
- John Deleon, M.D. Urology NPI 1275516700
- Deborah Douglas, M.D. Case Manager/Care Coordinator NPI 1780960005
- John Etlinger, M.D. Surgery NPI 1750310934
- Harold Felter, M.D. Internal Medicine NPI 1346223260
- Michelle Foote, M.D. Obstetrics & Gynecology NPI 1427038819
- Lucille Fournier, PA Physician Assistant NPI 1265762074
- Amber Grapevine, MS, RD Dietitian, Registered NPI 1821070863
Specialties
-
Specialist PrimaryAn individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 094025601 |
Practice context
Multi-provider organization. 20 individual providers on file at this primary address.
Provyx · Custom healthcare lists
Need all 4038 Specialist providers in Texas?
Get the full list as a CSV with verified work emails, direct phones, and LinkedIn URLs.
Request a quote →How to verify this organization
- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
- Verify the organization is in good standing.Cross-check with the state's business registration and any applicable licensing boards.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.