NPI age
17 years
Enumerated 2008-09-27
● Active
Type 1 · Individual
DR. Philip Gregory Tan Ong, MD
Ong is 1 of 120 internal medicine providers in San Antonio and 1 of 1318 in Texas.
Primary specialty
Internal Medicine
Plus 1 subspecialty
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2022-07-21
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 1318 active internal medicine providers in Texas.
NPI age
17 years
≈ at median (18 yr)
State licenses
1 state
15% of peers hold multiple states
Subspecialties
1
In the 57% of peers with subspecialties
NPI lifetime · 2008 → 2026
2008-09Enumerated in NPPES
2008
2026
Where they practice
Practice location
4502 Medical Dr
San Antonio, TX 782294402
Mailing address
7703 Floyd Curl Dr
San Antonio, TX 782293901
Specialties
-
Internal Medicine PrimaryAn internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex...
-
Internal MedicineAn internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 (TX) | 338967809 | CSHCN |
| 05 (TX) | 338967808 |
Practice context
Part of a multi-provider practice. 1646 other active providers share this practice address in NPPES.
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- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
- Check the state license is currently active.State licensing boards publish current status; NPPES does not.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.