Individual
DR. WILLIAM JAMES GIESEN
Active
Sole proprietor
Yes
Provider details
NPI number
Gender
Man
Credential
M.D.
Contact information
Practice address
1500 POST RD., DARIEN, CT 06820
(203) 655-2516
(203) 656-3665
Mailing address
1500 POST RD, DARIEN, CT 06820
(203) 655-2516
(203) 656-3665
Taxonomy
Speciality
Code
Description
License number
State
207R00000X
Internal Medicine Physician
Primary
CT023721
CT
Other
Other identifiers
Code
Description
Identifier
Issuer
State
01
—
061258283
GUARDIAN
—
01
—
0697273
US HEALTHCARE
—
01
—
237210
CONNECTICARE
—
01
—
4111798
AETNA
—
Enumeration date
10/27/2006
Last updated
05/09/2016
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