NPI age
9 years
Enumerated 2017-04-12
● Active
Type 1 · Individual
Megan Guillen Diaz, LMFT
Guillen Diaz is 1 of 77 marriage & family therapist providers in Boise and 1 of 343 in Idaho.
Primary specialty
Marriage & Family Therapist
Plus 2 subspecialties
Licensed in
ID, WA, OR
3 states
Status
Active
No deactivations on record
Last NPPES update
2026-04-27
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 343 active marriage & family therapist providers in Idaho.
NPI age
9 years
↓ 2 yr below median (11 yr)
State licenses
3 states
Top 81% — 18% of peers are multi-state
Subspecialties
0
40% of peers hold subspecialties
NPI lifetime · 2017 → 2026
2017-04Enumerated in NPPES
2017
2026
Where they practice
Practice location
11533 W Jenilyn Ct
Boise, ID 837131542
Mailing address
11533 W Jenilyn Ct
Boise, ID 837131542
Specialties
-
Marriage & Family Therapist PrimaryA marriage and family therapist is a person with a master's degree in marriage and family therapy, or a master's or doctoral degree in a related mental health field with substantially equivalent coursework in marriage and family...
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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