NPI age
8 years
Enumerated 2017-11-03
● Active
Type 1 · Individual
Colleen Callister
Callister is 1 of 77 counselor providers in Sherman and 1 of 23131 in Texas.
Primary specialty
Counselor
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2020-10-19
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 23131 active counselor providers in Texas.
NPI age
8 years
≈ at median (7 yr)
State licenses
1 state
2% of peers hold multiple states
Subspecialties
0
20% of peers hold subspecialties
NPI lifetime · 2017 → 2026
2017-11Enumerated in NPPES
2017
2026
Where they practice
Practice location
227 S Travis St
Sherman, TX 750907110
Mailing address
Po Box 422
Sherman, TX 750910422
Additional practice locations
1 secondary location on file with NPPES.
Location 2
1400 Tx- 91, 1127
Denison, TX 75020
Specialties
-
Counselor PrimaryDefinition to come...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 378901802 |
Practice context
Part of a multi-provider practice. 3 other active providers share this practice address in NPPES.
Recently enumerated nearby: 2 new counselor providers have been added in Sherman 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.