Laura Ann Siemens, PT
Physical Therapist · Los Alamitos, CA
Laura Ann Siemens, PT is a physical therapist with a practice address in Los Alamitos, California, and NPI 1134289549, issued on Dec 8, 2006. Check the license (California PT9959, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Laura Ann Siemens
- Credential
- PT
- Primary taxonomy
- Physical Therapist 225100000X
- License number
- PT9959 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4226 Katella Ave, Los Alamitos, CA 90720
- Phone
- (562) 431-6004
- Enumerated
- Dec 8, 2006
- Record last updated
- Sep 18, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (562) 431-9854
- Medicare enrollment
- Enrolled (PECOS I20120209000206); accepts Medicare assignment
- Medical or professional school
- Stanford University School Of Medicine, 1980
- Entity
- Type 1 · individual
8 nearest physical therapist records → All 22,531 in California → Look up another NPI →
Also registered at 4226 Katella Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Jackson, MPT, B.ED.Physical Therapist1710126560
- Trisha Sasaki, PT28307Physical Therapist1942369376
- Jamie Veenstra, A.T.CAthletic Trainer1730303785
Verify Laura Ann Siemens in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PT9959Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Magnolia Physical Therapy IncHuntington Beach, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Laura Ann Siemens among 22,531 physical therapist records in California
Laura Ann Siemens, PT is one of 22,531 physical therapist records with a practice address in California. 32% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 84% newer
- In a Medicare fileYes · 32% of these records are
- In the CMS Doctors and Clinicians fileYes · 34% of these records are
- Graduated1980 · median 2017 among the 7,751 with a school on file
- Record last updated2008 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 225100000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
35 physical therapist records list a practice address in Los Alamitos
They are 35 of the 1,035 NPPES records with a practice address in Los Alamitos, and 22,531 physical therapist records in California.
All 22,531 in California → Every provider in Los Alamitos → Physical Therapist nationwide →
The 8 physical therapist records with the nearest ZIP codes
- Tara Cooper, PHYSICAL THERAPISTLos Katella Avenue, CA 907201679667976
- John Davies, PTLos Alamitos, CA 907201003036765
- Andrew Einhorn, PTLos Alamitos, CA 907201043370463
- Cesar Fajardo, D.P.T.Los Alamitos, CA 907201346259769
- Tara Hakala, M.P.T.Los Alamitos, CA 907201710002928
- Jim Honda, PTLos Alamitos, CA 907201154481570
- Kristi LavarderaLos Alamitos, CA 907201396808945
- Jeremy Matteson, PT, CSCSLos Alamitos, CA 907201902993462
Common questions
What is Laura Ann Siemens, PT's NPI number?
Laura Ann Siemens, PT's National Provider Identifier (NPI) is 1134289549, issued on Dec 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Laura Ann Siemens, PT located?
The NPPES record lists a practice address at 4226 Katella Ave, Los Alamitos, CA, 90720. Phone: (562) 431-6004. Providers update this record themselves, so call before visiting.
How can I verify Laura Ann Siemens, PT's license?
NPPES lists California license number PT9959, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.