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Edit this profileWhere to find Marissa Kiefer, D.P.T.
- Middle Island location main office
35 Longwood Rd, Middle Island, NY 11953 - Babylon location
400 W Main St Ste 340, Babylon, NY 11702 - Riverhead location
518 E Main St Ste 100, Riverhead, NY 11901 - East Patchogue location
191 Patchogue Yaphank Rd, East Patchogue, NY 11772
About Dr. Kiefer
Marissa Kiefer, D.P.T. is a physical therapist based in Middle Island, NY. Medicare claims data shows Marissa provided 666 services to 307 patients. The services billed most often include therapy procedure using functional activities, therapy procedure to re-educate brain-to-nerve-to-muscle function, each 15 minutes, and therapy procedure using manual technique, each 15 minutes. The provider's National Provider Identifier (NPI) is 1528608965.
Factual summary compiled by Guide.md from public records; not written by this provider.
Specialty
Credentials & Licensing
Contact Information
- (631) 924-0008
- Email not available
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Practice Locations
35 LONGWOOD RD
Middle Island, NY 11953
400 W Main St Ste 340
Babylon, NY 11702
518 E Main St Ste 100
Riverhead, NY 11901
191 Patchogue Yaphank Rd
East Patchogue, NY 11772
Conditions Supported and Services
Within Physical 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
- Knee pain
- Lower back pain
- Pelvic floor dysfunction
- Post-surgery rehab
- Sports injuries
- Stroke recovery
Back & Spine
Balance & head
Circulation
Foot & ankle
Foot & Ankle
Hand & Wrist
Hip & Pelvis
Joint & muscle
- Diastasis Recti
- Fibromyalgia Pain
- Frozen shoulder
- Golfer's elbow
- Groin Strain
- Hamstring Pull
- Hip osteoarthritis
- IT Band Syndrome
- Lateral hip pain and trochanteric bursitis
- Osteoarthritis
- Shoulder Pain
- Tennis elbow
Joints
Knee & Leg
Neck & Head
Nerve & Spine
Nerve issues
Neurological
Pelvic Health
Shoulder
Spine & neck
Procedures & services
Equipment & devices
- Shockwave Therapy
- Back And Neck Traction
- Cold laser therapy
- E-Stim Therapy
- Therapeutic Ultrasound
Hands-on therapies
Most searched procedures
Aquatic Therapy
Assessments
Back & Spine
Balance & neurological
- Balance Training
- Concussion Rehab
- Epley Maneuver
- Gait Training
- Parkinson's Movement Program
- Vestibular Rehabilitation
Evaluation
Exercise Therapy
Foot & Ankle
General Therapy
Hands-on Therapy
Mobility & Balance
Pain Relief Devices
Pelvic Health
Post-op care
Prevention & posture
Specialized programs
- Aquatic Therapy
- Blood Flow Restriction Training
- Lymphedema Drainage Therapy
- McKenzie Method Treatment
- Running Gait Analysis
- TMJ Physical Therapy
- Work Conditioning Program
Specialized PT
- Cardiopulmonary Physical Therapy
- Geriatric Physical Therapy
- Hand therapy
- Neurological Physical Therapy
- Pediatric Physical Therapy
Sports Performance
Support & stabilization
Procedures Most Often Billed to Medicare
666 services · 307 patients · 5 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Therapy procedure using functional activities | Treatment | 97530 |
157 | Less often than most peers in Physical Therapist |
| Therapy procedure to re-educate brain-to-nerve-to-muscle function, each 15 minutes | Treatment | 97112 |
154 | Less often than most peers in Physical Therapist |
| Therapy procedure using manual technique, each 15 minutes | Treatment | 97140 |
152 | As often as other peers in Physical Therapist |
| Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes | Treatment | 97110 |
150 | Less often than most peers in Physical Therapist |
| Electrical stimulation (unattended), to one or more areas for indication(s) other than wound care, as part of a therapy plan of care | Billing code | G0283 |
53 | Less often than most peers in Physical 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 physical 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 physical therapists in Middle Island 7
Same specialty, same city.
More connections — 8 related providers in 1 group
Also performs Therapy procedure using functional activities 8
Providers in NY who bill this service to Medicare most often.
Common questions
What kind of doctor is Marissa Kiefer?
Marissa Kiefer is a physical therapist in Middle Island, NY. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Marissa Kiefer's address?
Marissa Kiefer is listed at 35 Longwood Rd, Middle Island, NY 11953. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Marissa Kiefer?
The number on file is (631) 924-0008. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Marissa Kiefer?
Marissa Kiefer's National Provider Identifier is 1528608965. 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
How much experience does Marissa Kiefer have?
Marissa Kiefer has 6+ years experience. Registered with an NPI since 2020. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
What procedures does Marissa Kiefer perform?
According to Medicare billing data, Marissa Kiefer provides treatments such as therapy procedure using functional activities and therapy procedure to re-educate brain-to-nerve-to-muscle function, each 15 minutes. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Marissa Kiefer's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Marissa Kiefer. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.