What is Joanna Siefert's NPI number?

Joanna Siefert's National Provider Identifier (NPI) is 1831347269, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Joanna Siefert's specialty?

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

Where is Joanna Siefert located?

Joanna Siefert's practice location on file with NPPES is 1027 Alabama St, Vallejo, CA 94590-4511.

What is Joanna Siefert's phone number?

The practice phone number listed in the NPPES registry for Joanna Siefert is (707) 558-1600.

Is Joanna Siefert's NPI active?

Yes — Joanna Siefert's NPI (1831347269) is active in the NPPES registry as of the last update on 2008-08-27.

IndividualActive

Joanna Siefert

NPI 1831347269 · Mental Health Counselor · Vallejo, CA

Joanna Siefert is a Mental Health Counselor provider in Vallejo, CA (NPI 1831347269).

Provider details

NPI number: 1831347269
Entity type: Individual
Primary specialty: Mental Health CounselorBehavioral Health & Social Service Providers
Sex: Female
Sole proprietor: No

Specialties & taxonomies

Mental Health CounselorPrimary101YM0800X
Behavioral Health & Social Service Providers

Profile Score

Detailed profile(80/100 index)

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

Registry tenure38% of score
17 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

1027 Alabama St

Vallejo, CA 94590-4511

Phone: (707) 558-1600

Street-level locationGet directions

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Mailing address