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Individual
PETER K SIEN
Active
Individual
PETER K SIEN
Active
Sole proprietor
No
Provider details
NPI number
Gender
Man
Credential
MD
Taxonomy
Speciality
Code
Description
License number
State
2085R0001X
Radiation Oncology Physician
18502
AZ
2085R0001X
Radiation Oncology Physician
G32267
CA
2085R0001X
Radiation Oncology Physician
Primary
MD60698178
WA
Other
Other identifiers
Code
Description
Identifier
Issuer
State
05
—
00G322670
—
CA
01
—
1053399568
REGENCE BLUE SHIELD
WA
05
—
1053399568
—
CA
01
—
3620029
CIGNA
CA
01
—
4313432
AETNA
FL
01
—
4313432
AETNA
WA
05
—
500732059
—
OR
05
—
CA211033
—
CA
01
—
P01708893
RR MEDICARE
FL
Enumeration date
01/04/2006
Last updated
01/05/2026
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