Allyson M. Merriam, DPT
Physical Medicine & Rehabilitation Physician · Irvine, CA
Allyson M. Merriam, DPT is a physical medicine & rehabilitation physician with a practice address in Irvine, California, and NPI 1629676184, issued on Oct 15, 2020. Check the license (California PT298883, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Allyson M. Merriam
- Credential
- DPT
- Primary taxonomy
- Physical Medicine & Rehabilitation Physician 208100000X
- License number
- PT298883 CA
Self-reported in NPPES; status is on the state search - Practice location
- 19732 Macarthur Blvd Ste 125, Irvine, CA 92612
- Phone
- (949) 644-2022
- Enumerated
- Oct 15, 2020
- Record last updated
- Dec 22, 2025
- Medicare enrollment
- Enrolled (PECOS I20220419002386); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physical medicine & rehabilitation physician records → All 1,549 in California → Look up another NPI →
Also registered at 19732 Macarthur Blvd Ste 125
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alyssa BradleyPhysical Therapist1235093931
- Talia Dominello, DPTPhysical Therapist1649828302
- Francine Wynn, PT24138Physical Therapist1962554220
Verify Allyson M. Merriam in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license PT298883Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 76.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Bradley Physiotherapy PCIrvine, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Allyson M. Merriam among 1,549 physical medicine & rehabilitation physician records in California
Allyson M. Merriam, DPT is one of 1,549 physical medicine & rehabilitation physician records with a practice address in California. 59% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 79% of them.
- NPI issued2020 · 79% of these records are older, 16% newer
- In a Medicare fileYes · 59% of these records are
- In the CMS Doctors and Clinicians fileYes · 51% of these records are
- Graduated2020 · median 2008 among the 786 with a school on file
- Record last updated2025 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208100000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Physical Medicine & Rehabilitation Physician providers in California
There are 1,549 physical medicine & rehabilitation physician records in California.
All 1,549 in California → Every provider in Irvine → Physical Medicine & Rehabilitation Physician nationwide →
The 8 physical medicine & rehabilitation physician records with the nearest ZIP codes
- Ronald Levin, MDIrvine, CA 926121295816999
- Jeffrey Olsen, M.D.Irvine, CA 926121376537399
- Ramnik Singh, M.D.Irvine, CA 926121275662967
- Shadi Farhadi, PTIrvine, CA 926141891343521
- Irene Tseng, MDIrvine, CA 926141962082081
- Wanda Chang, M.D.Irvine, CA 926181336396373
- Jessica ChengIrvine, CA 926181336672302
- Michael Chiu, PTIrvine, CA 926181851818165
Common questions
What is Allyson M. Merriam, DPT's NPI number?
Allyson M. Merriam, DPT's National Provider Identifier (NPI) is 1629676184, issued on Oct 15, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Allyson M. Merriam, DPT located?
The NPPES record lists a practice address at 19732 Macarthur Blvd Ste 125, Irvine, CA, 92612. Phone: (949) 644-2022. Providers update this record themselves, so call before visiting.
How can I verify Allyson M. Merriam, DPT's license?
NPPES lists California license number PT298883, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Allyson M. Merriam, DPT's MIPS final score?
The 2023 MIPS final score is 76.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.