What is William Sieh's NPI number?

William Sieh's National Provider Identifier (NPI) is 1164761177, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is William Sieh's specialty?

William Sieh is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).

Where is William Sieh located?

William Sieh's practice location on file with NPPES is 1085 Ranchero Way, San Jose, CA 95117-3109.

What is William Sieh's phone number?

The practice phone number listed in the NPPES registry for William Sieh is (408) 600-7095.

Is William Sieh's NPI active?

Yes — William Sieh's NPI (1164761177) is active in the NPPES registry as of the last update on 2013-02-11.

IndividualActive

William Sieh

NPI 1164761177 · Mental Health Counselor · San Jose, CA

William Sieh is a Mental Health Counselor provider in San Jose, CA (NPI 1164761177).

Provider details

NPI number: 1164761177
Entity type: Individual
Primary specialty: Mental Health CounselorBehavioral Health & Social Service Providers
Sex: Male
Sole proprietor: No

Specialties & taxonomies

Mental Health CounselorPrimary101YM0800X
Behavioral Health & Social Service Providers

Profile Score

Established profile(72/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
13 yrs in NPPES registry
Profile completeness38% of score
83% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

1085 Ranchero Way

Apt # 7

San Jose, CA 95117-3109

Phone: (408) 600-7095

Street-level locationGet directions

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Mailing address