What is Lisa Siewert's NPI number?

Lisa Siewert's National Provider Identifier (NPI) is 1649101254, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Lisa Siewert's specialty?

Lisa Siewert is listed in the NPPES registry with a primary specialty of Genetic Counselor (M.S.) (Other Service Providers).

Where is Lisa Siewert located?

Lisa Siewert's practice location on file with NPPES is 605 E Huntington Dr Ste 209, Monrovia, CA 91016-6353.

What is Lisa Siewert's phone number?

The practice phone number listed in the NPPES registry for Lisa Siewert is (800) 426-6467.

Is Lisa Siewert's NPI active?

Yes — Lisa Siewert's NPI (1649101254) is active in the NPPES registry as of the last update on 2026-05-25.

IndividualActive

Lisa Siewert, LCGC

NPI 1649101254 · Genetic Counselor (M.S.) · Monrovia, CA

Lisa Siewert, LCGC is a Genetic Counselor (M.S.) provider in Monrovia, CA (NPI 1649101254).

Provider details

NPI number: 1649101254
Entity type: Individual
Primary specialty: Genetic Counselor (M.S.)Other Service Providers
Credential: LCGC
Sex: Female
Sole proprietor: No
License: GC002041 (CA)

Specialties & taxonomies

Genetic Counselor (M.S.)Primary170300000XLicense GC002041 (CA)
Other Service Providers

Profile Score

Established profile(52/100 index)

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

Registry tenure38% of score
Under 1 yr in registry
Profile completeness38% of score
100% 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

605 E Huntington Dr Ste 209

Monrovia, CA 91016-6353

Phone: (800) 426-6467

Street-level locationGet directions

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Mailing address