Provider Profile
Mary Ann Watson, OTR/L is an occupational therapist based in Los Alamitos, CA. According to Medicare claims data, Mary Ann cared for 76 Medicare patients across 591 services. The services billed most often include therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes, therapy procedure using manual technique, each 15 minutes, and re-evaluation for occupational therapy, typically 30 minutes.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
4772 KATELLA AVE STE 100
Los Alamitos, CA 90720
Within Occupational Therapy generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Most searched conditions
Brain and nerves
Chronic Conditions
Chronic pain
Cognitive
Daily Function
General wellness
Hand and arm
Infant and pediatric
Mobility & Safety
Nerve & Joint Pain
Neurological
Pediatric and sensory
Pelvic health
Sensory & Development
Vision
Most searched procedures
Brain and nerves
Cognitive
Cognitive & Vision
Daily Function
Everyday living
General OT
Hand and arm
Home & Safety
Infant and pediatric
Mobility & Equipment
Pain management
Pediatric & Sensory
Pediatric and sensory
Pelvic health
Specialized Rehab
Splints & Braces
Therapy & Rehab
Vision and brain
Workplace Rehab
591 services · 76 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes | Treatment | 97110 |
289 | As often as other peers in Occupational Therapist |
| Therapy procedure using manual technique, each 15 minutes | Treatment | 97140 |
285 | More often than most peers in Occupational Therapist |
| Re-evaluation for occupational therapy, typically 30 minutes | Treatment | 97168 |
17 | Less often than most peers in Occupational Therapist |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Mary Ann Watson is an occupational therapist in Los Alamitos, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Mary Ann Watson is listed at 4772 Katella Ave Ste 100, Los Alamitos, CA 90720. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (562) 430-8700. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Mary Ann Watson's National Provider Identifier is 1356835722. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Mary Ann Watson has 8+ years experience. Registered with an NPI since 2018. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
According to Medicare billing data, Mary Ann Watson provides treatments such as therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes and therapy procedure using manual technique, each 15 minutes. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Mary Ann Watson. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.