NPI age
19 years
Enumerated 2006-07-11
● Active
Type 1 · Individual
DR. David L Callender, M.D.
Callender is 1 of 190 otolaryngology providers in Houston and 1 of 1024 in Texas.
Primary specialty
Otolaryngology
Plus 1 subspecialty
Licensed in
TX, CA
2 states
Status
Active
No deactivations on record
Last NPPES update
2025-11-18
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 1024 active otolaryngology providers in Texas.
NPI age
19 years
≈ at median (19 yr)
State licenses
2 states
Top 88% — 11% of peers are multi-state
Subspecialties
0
30% of peers hold subspecialties
NPI lifetime · 2006 → 2026
2006-07Enumerated in NPPES
2006
2026
Where they practice
Practice location
915 Gessner Rd Ste 720
Houston, TX 770242530
Mailing address
301 University Blvd
Galveston, TX 775555302
Additional practice locations
1 secondary location on file with NPPES.
Location 2
301 University Blvd
Galveston, TX 775555302
Specialties
-
Otolaryngology PrimaryAn otolaryngologist-head and neck surgeon provides comprehensive medical and surgical care for patients with diseases and disorders that affect the ears, nose, throat, the respiratory and upper alimentary systems and related structures...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 (CA) | 00C517200 | PPIN # |
Multi-state credentialing: Licensed in 2 states. Useful context for credentialers building cross-state provider networks.
Practice context
Part of a multi-provider practice. 7 other active providers share this practice address in NPPES.
Recently enumerated nearby: 1 new otolaryngology provider has been added in Houston in the last 180 days.
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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.