NPI age
19 years
Enumerated 2006-08-30
● Active
Type 1 · Individual
DR. John B Casper, M.D.
Casper is 1 of 1 internal medicine providers in Hayden and 1 of 3 in Idaho.
Primary specialty
Internal Medicine
Plus 1 subspecialty
Licensed in
ID
1 state
Status
Active
No deactivations on record
Last NPPES update
2025-12-08
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 3 active internal medicine providers in Idaho.
NPI age
19 years
↑ 3 yr above median (16 yr)
State licenses
1 state
0% of peers hold multiple states
Subspecialties
1
In the 100% of peers with subspecialties
NPI lifetime · 2006 → 2026
2006-08Enumerated in NPPES
2006
2026
Where they practice
Practice location
9030 N Hess St Ste 474
Hayden, ID 838359827
Mailing address
9030 N Hess St Ste 474
Hayden, ID 838359827
Specialties
-
Internal Medicine PrimaryAn internist doctor of osteopathy that specializes in the treatment of addiction disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine can obtain a Certificate of...
-
Internal MedicineA physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer,...
Practice context
Part of a multi-provider practice. 1 other active provider shares this practice address in NPPES.
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