NPI age
19 years
Enumerated 2006-08-24
● Active
Type 1 · Individual
Marc D. Feldman, MD
Feldman is 1 of 66 internal medicine providers in San Antonio and 1 of 883 in Texas.
Primary specialty
Internal Medicine
Plus 2 subspecialties
Licensed in
TX, CO
2 states
Status
Active
No deactivations on record
Last NPPES update
2022-08-22
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 883 active internal medicine providers in Texas.
NPI age
19 years
↑ 2 yr above median (17 yr)
State licenses
2 states
Top 78% — 21% of peers are multi-state
Subspecialties
1
In the 72% of peers with subspecialties
NPI lifetime · 2006 → 2026
2006-08Enumerated in NPPES
2006
2026
Where they practice
Practice location
8300 Floyd Curl Dr Fl 3
San Antonio, TX 782293931
Mailing address
4 Reading Ln
San Antonio, TX 782571229
Additional practice locations
2 secondary locations on file with NPPES.
Location 2
575 Hill Country Dr Ste 301
Kerrville, TX 780286024
Location 3
25723 Old Fredericksburg Rd
Boerne, TX 780156605
Specialties
-
Internal Medicine PrimaryAn area of medicine within the subspecialty of cardiology, which uses specialized imaging and other diagnostic techniques to evaluate blood flow and pressure in the coronary arteries and chambers of the heart and uses technical...
-
Internal MedicineAn internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 046289702 | |
| 01 (TX) | 046289703 | CSHCN |
Multi-state credentialing: Licensed in 2 states. Useful context for credentialers building cross-state provider networks.
Practice context
Part of a multi-provider practice. 42 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.