Steven L. Karassik, MD
Dermatology Physician · Ketchum, ID
Steven L. Karassik, MD is a dermatology physician with a practice address in Ketchum, Idaho, and NPI 1891748117, issued on May 18, 2006. Check the license (Idaho M5900, as entered in NPPES) on the Idaho Board of Medicine; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Steven L. Karassik
- Credential
- MD
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- M5900 ID
Self-reported in NPPES; status is on the state search - Practice location
- 191 W 5TH St, Ketchum, ID 83340
- Phone
- (208) 725-2171
- Enumerated
- May 18, 2006
- Record last updated
- Sep 24, 2013 (not updated in 13 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Also registered at 191 W 5TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Matthew Reeck, MDDermatology Physician1124022801
Verify Steven L. Karassik in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIdaho Board of Medicine
Search for license M5900Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4 dermatology physician records list a practice address in Ketchum
They are 4 of the 161 NPPES records with a practice address in Ketchum, and 59 dermatology physician records in Idaho. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 4 in Ketchum → All 59 in Idaho → Every provider in Ketchum →
Other dermatology physician records in Idaho
- James Abbott, MDKetchum, ID1518490283
- Brock Andersen, M.D.Fruitland, ID1558349852
- Trevor Batty, D.O.Chubbuck, ID1558756106
- Matthew Bender, MDGarden City, ID1881633162
- Lindsey Bennett, M.D.McCall, ID1124083266
- Colby Bingham, M.D.Burley, ID1164834073
- Nicholas Blickenstaff, M.D., M.S.Boise, ID1437544582
- Emily Boozalis, MDMeridian, ID1760927990
- Lindie Borton, M.DBoise, ID1124106364
- Cornelius Brooke, MDIdaho Falls, ID1275504300
Common questions
What is Steven L. Karassik, MD's NPI number?
Steven L. Karassik, MD's National Provider Identifier (NPI) is 1891748117, issued on May 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Steven L. Karassik, MD located?
The NPPES record lists a practice address at 191 W 5TH St, Ketchum, ID, 83340. Phone: (208) 725-2171. Providers update this record themselves, so call before visiting.
How can I verify Steven L. Karassik, MD's license?
NPPES lists Idaho license number M5900, as entered by the provider. Search the Idaho Board of Medicine at https://dopl.idaho.gov/bom/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.