Dr. Mark Chai, M.D.
Physical Medicine & Rehabilitation (PM&R) (Physical Medicine & Rehabilitation Physician)
- Medicare participating
At a glance
- Medical school
- Hahnemann University College of Medicine (1988)
- Years since graduation
- 38
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 391
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 1988Medical school: Hahnemann University College of Medicine
- 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Physical Medicine & Rehabilitation Physician primary
PA license MD043343L
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Map: Physical Medicine & Rehabilitation (PM&R) per capita by county →
Where they work
Hospitals
- Cooper University Hospital Camden, NJ
- West Jersey Hospital Voorhees, NJ
- Inspira Medical Center Mullica Hill Elmer, NJ
- Inspira Medical Center Vineland Vineland, NJ
- Cape Regional Medical Center Inc Cape May Court House, NJ
Medical groups
- Cooper Physical Medicine and Rehabilitation Associates PC (12 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 391
- Services billed
- 9,485
- Patients’ average age
- 75
| Service | Times | Patients |
|---|---|---|
| Injection, onabotulinumtoxina, 1 unit | 7,800 | 12 |
| Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 162 | 122 |
| Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | 128 | 127 |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 118 | 117 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 60 | 46 |
| Established patient office or other outpatient visit, 20-29 minutes | 34 | 25 |
| Established patient office or other outpatient visit, 30-39 minutes | 24 | 16 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 21 | 21 |
| New patient office or other outpatient visit, 45-59 minutes | 15 | 15 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Gabapentin Other prescribers in Camden, NJ | 63 |
| Baclofen Other prescribers in Camden, NJ | 56 |
| Pregabalin Other prescribers in Camden, NJ | 37 |
| Tizanidine Hcl Other prescribers in Camden, NJ | 33 |
| Oxycodone-Acetaminophen (oxycodone hcl/acetaminophen) Other prescribers in Camden, NJ | 32 |
| Cyclobenzaprine Hcl Other prescribers in Camden, NJ | 14 |
| Morphine Sulfate Er (morphine sulfate) Other prescribers in Camden, NJ | 12 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 2 companies reported 2 payments worth $156 in total to this clinician.
| Microtransponder, Inc. | $130 |
|---|---|
| AbbVie Inc. | $25.80 |
| Food and Beverage | $156 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.