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- 1039 E El Camino Real, Sunnyvale, CA 94087
About Hyosun Ahn
Hyosun Ahn is an occupational therapist based in Sunnyvale, CA. According to Medicare claims data, Hyosun cared for 62 Medicare patients across 503 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 functional activities, and therapy procedure to re-educate brain-to-nerve-to-muscle function, each 15 minutes. The provider's National Provider Identifier (NPI) is 1255820478.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (408) 599-0088
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
1039 E EL CAMINO REAL
Sunnyvale, CA 94087
Conditions Supported and Services
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.
Conditions
Most searched conditions
Brain and nerves
Chronic Conditions
Chronic pain
Cognitive
Daily Function
General wellness
Hand and arm
- Cubital tunnel syndrome
- Dupuytren's contracture
- Ganglion Cyst In Hand Or Wrist
- Hand and finger fractures
- Jammed Finger
- Mallet Finger
- Thoracic outlet syndrome
- Torn Hand Tendon
Infant and pediatric
Mobility & Safety
Nerve & Joint Pain
- Carpal tunnel
- Complex Regional Pain Syndrome
- Golfer's elbow
- Hand and Wrist Arthritis
- Joint Contractures and Stiffness
- Peripheral neuropathy
- Shoulder Impingement and Rotator Cuff Pain
- Tennis elbow
- Thumb Tendinitis
- Trigger finger
- Wrist Fractures and Sprains
Neurological
- Alzheimer's disease
- Essential tremor
- Multiple sclerosis
- Parkinson's disease
- Spinal Cord Injury
- Traumatic brain injury
Pediatric and sensory
- Frequent Meltdowns and Emotional Outbursts
- Sensory overload and sensory issues
- Toe Walking In Children
Pelvic health
Sensory & Development
- ADHD
- Cerebral palsy
- Clumsiness and Coordination Problems
- Developmental delay
- Difficulty Handwriting
- Down Syndrome
- Picky Eating and Food Aversion
- Pregnancy back pain
Vision
Procedures & services
Most searched procedures
Brain and nerves
Cognitive
Cognitive & Vision
Daily Function
Everyday living
General OT
Hand and arm
- Hand and Pinch Strengthening
- Joint Mobilization for Hand and Wrist
- Paraffin Wax Bath Treatment
- Therapeutic Ultrasound for Hand and Wrist
Home & Safety
Infant and pediatric
Mobility & Equipment
- Assistive Computer Technology Assessment
- Fall Prevention Training
- Safe Transfer Training
- Wheelchair Evaluation and Fitting
Pain management
Pediatric & Sensory
- Feeding Therapy
- Handwriting Therapy
- Pediatric Occupational Therapy Evaluation
- Primitive Reflex Integration
- Sensory Diet Development
- Sensory Integration Therapy
Pediatric and sensory
Pelvic health
Specialized Rehab
- Constraint-Induced Movement Therapy
- Driver Rehabilitation Evaluation
- Mirror Therapy
- Parkinson's Movement Program
- Prosthetic Training
Splints & Braces
Therapy & Rehab
- Kinesiology taping
- Lymphedema Drainage Therapy
- Neuromuscular Re-Education
- Scar Management and Desensitization
Vision and brain
Workplace Rehab
Procedures Most Often Billed to Medicare
503 services · 62 patients · 4 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 |
192 | Less often than most peers in Occupational Therapist |
| Therapy procedure using functional activities | Treatment | 97530 |
163 | Less often than most peers in Occupational Therapist |
| Therapy procedure to re-educate brain-to-nerve-to-muscle function, each 15 minutes | Treatment | 97112 |
102 | Less often than most peers in Occupational Therapist |
| Training for self-care or home management, each 15 minutes | Treatment | 97535 |
46 | 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.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other occupational therapists at this location 1
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other occupational therapists in Sunnyvale 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2005 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Hyosun Ahn's specialty?
Hyosun Ahn is an occupational therapist in Sunnyvale, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Hyosun Ahn?
Hyosun Ahn is listed at 1039 E El Camino Real, Sunnyvale, CA 94087. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Hyosun Ahn?
The number on file is (408) 599-0088. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Hyosun Ahn's NPI number?
Hyosun Ahn's National Provider Identifier is 1255820478. 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
What is Hyosun Ahn's education?
Hyosun Ahn attended Other, graduating in 2005. This comes from the CMS National Downloadable File.
CMS public data
How long has Hyosun Ahn been practicing?
Hyosun Ahn has 21 years experience. Calculated from a graduation year of 2005, reported in the CMS National Downloadable File.
CMS public data
What is Hyosun Ahn known for?
According to Medicare billing data, Hyosun Ahn provides treatments such as therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes and therapy procedure using functional activities. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Hyosun Ahn confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Hyosun Ahn. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.