Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mrs. Laura Ann Siemens, PT

Individual provider Physical Therapist · NPI 1134289549

Mrs. Laura Ann Siemens, PT is registered under Physical Therapist in Private Practice in Los Alamitos, California. Graduated from Stanford University School of Medicine in 1980, 46 years ago. Practices with Magnolia Physical Therapy Inc, a 5-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
46
Trained at
Stanford University School of Medicine
Licensed in
CA
In the registry since
2006
What do these letters mean?
PT — Physical Therapist
A licensed therapist who treats movement, pain and injury.

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Practice location Address checks out

4226 Katella Ave
Los Alamitos, CA 90720-3511 Not confirmed with CMS for 18 years — call before visiting
Phone: (562) 431-6004
Fax: (562) 431-9854
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physical Therapist (primary) Taxonomy 225100000X · Licence PT9959 (CA)

Record details

NPI number1134289549
Entity typeIndividual (Type 1)
GenderFemale
Credentials PT
Sole proprietorNo
NPI enumeratedDecember 8, 2006
Last updated in NPPESSeptember 18, 2008

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPHYSICAL THERAPIST IN PRIVATE PRACTICE
Medical schoolSTANFORD UNIVERSITY SCHOOL OF MEDICINE
Graduated 1980 (46 years in practice)
Group practice Magnolia Physical Therapy Inc — 5 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients78
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Magnolia Physical Therapy Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Los Alamitos