NPI age
9 years
Enumerated 2017-03-29
● Active
Type 1 · Individual
DR. Calli Ann Bertschy, D.O.
Bertschy is 1 of 13 internal medicine providers in Houston and 1 of 114 in Texas.
Primary specialty
Internal Medicine
Plus 2 subspecialties
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2024-09-01
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 114 active internal medicine providers in Texas.
NPI age
9 years
↓ 7 yr below median (16 yr)
State licenses
1 state
9% of peers hold multiple states
Subspecialties
2
In the 50% of peers with subspecialties
NPI lifetime · 2017 → 2026
2017-03Enumerated in NPPES
2017
2026
Where they practice
Practice location
6431 Fannin St., Suite Msb 1.255e
Houston, TX 77030
Mailing address
6431 Fannin Street, Msb 1.255e
Houston, TX 77030
Specialties
-
Internal Medicine PrimaryAn Internist who practices Sleep Medicine is certified in the subspecialty of sleep medicine and specializes in the clinical assessment, physiologic testing, diagnosis, management and prevention of sleep and circadian rhythm disorders....
-
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...
-
Internal MedicineAn 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...
Practice context
Part of a multi-provider practice. 27 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.
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