Individual
DR. ALLAN DOUGLAS SIEFKIN
Active
Sole proprietor
Provider details
NPI number
Gender
Man
Credential
MD
Contact information
Practice address
2315 STOCKTON BLVD, SACRAMENTO, CA 95817-2201
(916) 734-1166
(916) 734-3234
Mailing address
2315 STOCKTON BLVD, SACRAMENTO, CA 95817-2201
(916) 734-1166
(916) 734-3234
Taxonomy
Speciality
Code
Description
License number
State
207R00000X
Internal Medicine Physician
Primary
G032410
CA
207RC0200X
Critical Care Medicine (Internal Medicine) Physician
G032410
CA
207RP1001X
Pulmonary Disease Physician
G032410
CA
Other
Enumeration date
06/09/2005
Last updated
09/11/2025
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