NPI age
6 years
Enumerated 2019-08-08
● Active
Type 1 · Individual
Olesya Mikheeva Mussman
Mussman is 1 of 1 psychologist providers in Onaway and 1 of 235 in Idaho.
Primary specialty
Psychologist
Plus 2 subspecialties
Licensed in
ID, WA
2 states
Status
Active
No deactivations on record
Last NPPES update
2024-05-10
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 235 active psychologist providers in Idaho.
NPI age
6 years
↓ 11 yr below median (17 yr)
State licenses
2 states
Top 82% — 17% of peers are multi-state
Subspecialties
2
In the 30% of peers with subspecialties
NPI lifetime · 2019 → 2026
2019-08Enumerated in NPPES
2019
2026
Where they practice
Practice location
435 Larch St
Onaway, ID 838558759
Mailing address
435 Larch St
Onaway, ID 838558759
Specialties
-
Psychologist PrimaryA psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a...
-
CounselorDefinition to come...
-
PsychologistA psychologist who specializes in general practice and health service. It focuses on how people function both personally and in their relationships at all ages. Counseling psychology addresses the emotional, social, work, school and...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 (WA) | PY61045946 | WA LICENSE |
Multi-state credentialing: Licensed in 2 states. Useful context for credentialers building cross-state provider networks.
Practice context
Solo or small practice. No other active providers share this practice address in NPPES. This provider is listed as a sole proprietor.
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- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
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