NPI age
19 years
Enumerated 2006-09-21
● Active
Type 1 · Individual
DR. Barry Justin Cusack, MD
Cusack is 1 of 7 internal medicine providers in Boise and 1 of 10 in Idaho.
Primary specialty
Internal Medicine
Licensed in
ID
1 state
Status
Active
No deactivations on record
Last NPPES update
2007-07-08
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 10 active internal medicine providers in Idaho.
NPI age
19 years
↑ 3 yr above median (15 yr)
State licenses
1 state
40% of peers hold multiple states
Subspecialties
0
90% of peers hold subspecialties
NPI lifetime · 2006 → 2026
2006-09Enumerated in NPPES
2006
2026
Where they practice
Practice location
500 West Fort St, (111)
Boise, ID 837024598
Mailing address
9550 Chelan Ave
Garden City, ID 837141264
Specialties
-
Internal Medicine PrimaryAn internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 (ID) | M5678 | STATE MEDICAL LICENCE |
Practice context
Part of a multi-provider practice. 2 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.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.