Dr. Mark S. Diamond, MD
Neurology (Neurology Physician)
- Medicare participating
At a glance
- Medical school
- Jefferson Medical College of Thomas Jefferson University (1977)
- Years since graduation
- 49
- In the NPI registry since
- 2005
- Medicare patients seen, 2024
- 792
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
- 1977Medical school: Jefferson Medical College of Thomas Jefferson University
- 2005Registered 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
-
Neurology Physician primary
NJ license 25MA04056000 · NJ license MA40560
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Morristown Medical Center Morristown, NJ
- Overlook Medical Center Summit, NJ
- Newton Medical Center Newton, NJ
- Ahs Hospital Corp Hackettstown, NJ
Medical groups
- Practice Associates Medical Group (1,408 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
- 792
- Services billed
- 38,693
- Patients’ average age
- 76
| Service | Times | Patients |
|---|---|---|
| Injection, onabotulinumtoxina, 1 unit | 34,745 | 73 |
| Established patient office or other outpatient visit, 20-29 minutes | 349 | 251 |
| New patient office or other outpatient visit, 45-59 minutes | 266 | 266 |
| Established patient office or other outpatient visit, 30-39 minutes | 114 | 93 |
| Injection of chemical for paralysis of facial and neck nerve muscles on both sides of face | 85 | 37 |
| Established patient office or other outpatient visit, 40-54 minutes | 77 | 73 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 70 | 69 |
| Needle measurement of electrical activity in muscle with injection of chemical for paralysis of nerve muscle | 47 | 20 |
| Injection of chemical for paralysis of nerve muscles on side of face | 46 | 18 |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 45 | 45 |
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 |
|---|---|
| Donepezil Hcl Other prescribers in Morristown, NJ | 299 |
| Carbidopa-Levodopa (carbidopa/levodopa) Other prescribers in Morristown, NJ | 294 |
| Gabapentin Other prescribers in Morristown, NJ | 215 |
| Levetiracetam Other prescribers in Morristown, NJ | 187 |
| Memantine Hcl Other prescribers in Morristown, NJ | 121 |
| Sumatriptan Succinate Other prescribers in Morristown, NJ | 115 |
| Primidone Other prescribers in Morristown, NJ | 85 |
| Escitalopram Oxalate Other prescribers in Morristown, NJ | 81 |
| Sertraline Hcl Other prescribers in Morristown, NJ | 66 |
| Carbamazepine Er (carbamazepine) Other prescribers in Morristown, NJ | 64 |
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, 23 companies reported 107 payments worth $1,951 in total to this clinician.
| AbbVie Inc. | $300 |
|---|---|
| Pfizer Inc. | $227 |
| Novartis Pharmaceuticals Corporation | $223 |
| Lilly USA, LLC | $169 |
| E.r. Squibb & Sons, L.l.c. | $120 |
| Amgen Inc. | $111 |
| UCB, Inc. | $92.51 |
| Lundbeck LLC | $87.33 |
| Food and Beverage | $1,951 |
|---|
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.