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

Mrs. Margaret P. Pierson, MOT, OTR/L

Individual provider Occupational Therapist · NPI 1427381946

Mrs. Margaret P. Pierson, MOT, OTR/L is an Occupational Therapist in Private Practice in Phoenix, Arizona. Qualified in 1985, 41 years ago. Practices with Empowerme Rehabilitation LLC, a 440-clinician group and accepts Medicare assignment. Licensed in Arizona.

Years since qualifying
41
Licensed in
AZ
In the registry since
2009
What do these letters mean?
OTR/L — Occupational Therapist, Registered and Licensed
An occupational therapist who is both nationally registered and state licensed.

See every abbreviation used in this directory →

Practice location Address checks out

3401 N 67th Ave
Phoenix, AZ 85033-4517
Phone: (623) 691-4091
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Occupational Therapist (primary) Taxonomy 225X00000X · Licence 4217 (AZ)

Record details

NPI number1427381946
Entity typeIndividual (Type 1)
GenderFemale
Credentials MOT , OTR/L
Sole proprietorYes
NPI enumeratedSeptember 16, 2009
Last updated in NPPESSeptember 16, 2009

Medicare enrollment

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

Medicare specialtyOCCUPATIONAL THERAPIST IN PRIVATE PRACTICE
Medical schoolOTHER
Graduated 1985 (41 years in practice)
Group practice Empowerme Rehabilitation Llc — 440 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Phoenix