What is Karen Siazon's NPI number?

Karen Siazon's National Provider Identifier (NPI) is 1538855671, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Karen Siazon's specialty?

Karen Siazon is listed in the NPPES registry with a primary specialty of Pharmacist (Pharmacy Service Providers).

Where is Karen Siazon located?

Karen Siazon's practice location on file with NPPES is 26762 Portola Pkwy, Lake Forest, CA 92610-1712.

What is Karen Siazon's phone number?

The practice phone number listed in the NPPES registry for Karen Siazon is (949) 454-0327.

Is Karen Siazon's NPI active?

Yes — Karen Siazon's NPI (1538855671) is active in the NPPES registry as of the last update on 2023-04-12.

IndividualActive

Karen Siazon, RPH

NPI 1538855671 · Pharmacist · Lake Forest, CA

Karen Siazon, RPH is a Pharmacist provider in Lake Forest, CA (NPI 1538855671).

Provider details

NPI number: 1538855671
Entity type: Individual
Primary specialty: PharmacistPharmacy Service Providers
Credential: RPH
Sex: Female
Sole proprietor: Yes
License: 86644 (CA)

Practice location

26762 Portola Pkwy

Lake Forest, CA 92610-1712

Phone: (949) 454-0327

Street-level locationGet directions

More CA providers

Mailing address

421 W Alberta St

Anaheim, CA 92805-2611

Specialties & taxonomies

PharmacistPrimary183500000XLicense 86644 (CA)
Pharmacy Service Providers

Profile Score

Established profile(59/100 index)

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

Registry tenure38% of score
3 yrs in NPPES 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.

Enumerated: 2023-04-12
Last updated: 2023-04-12
Certified: 2023-02-24

Frequently asked questions

What is Karen Siazon's NPI number?: Karen Siazon's National Provider Identifier (NPI) is 1538855671, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Karen Siazon's specialty?: Karen Siazon is listed in the NPPES registry with a primary specialty of Pharmacist (Pharmacy Service Providers).
Where is Karen Siazon located?: Karen Siazon's practice location on file with NPPES is 26762 Portola Pkwy, Lake Forest, CA 92610-1712.
What is Karen Siazon's phone number?: The practice phone number listed in the NPPES registry for Karen Siazon is (949) 454-0327.
Is Karen Siazon's NPI active?: Yes — Karen Siazon's NPI (1538855671) is active in the NPPES registry as of the last update on 2023-04-12.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions