NPI age
20 years
Enumerated 2006-02-06
● Active
Type 1 · Individual
Gregory J Guzley, MD
Guzley is 1 of 95 internal medicine providers in San Antonio and 1 of 1069 in Texas.
Primary specialty
Internal Medicine
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2016-01-28
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 1069 active internal medicine providers in Texas.
NPI age
20 years
↑ 2 yr above median (18 yr)
State licenses
1 state
22% of peers hold multiple states
Subspecialties
0
52% of peers hold subspecialties
NPI lifetime · 2006 → 2026
2006-02Enumerated in NPPES
2006
2026
Where they practice
Practice location
4411 Medical Dr
San Antonio, TX 782293822
Mailing address
Po Box 911230
Dallas, TX 753911230
Specialties
-
Internal Medicine PrimaryAn internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 116715701 | |
| 05 (TX) | 116715705 | |
| 01 (TX) | 83Z208 | BCBS |
| 05 (TX) | 116715704 | |
| 01 (TX) | P01547632 | RAILROAD MEDICARE |
Practice context
Part of a multi-provider practice. 28 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.