Dr. Marshall C. Wareham, MD
Ophthalmology (Ophthalmology Physician)
- Medicare participating
At a glance
- Medical school
- Loma Linda University School of Medicine (1982)
- Years since graduation
- 44
- In the NPI registry since
- 2005
- Medicare patients seen, 2024
- 1,269
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
- 1982Medical school: Loma Linda University School of Medicine
- 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
-
Ophthalmology Physician primary
OH license 35-05-0634-W
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Medical groups
- Allied Eye Physicians and Surgeons Inc (3 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
- 1,269
- Services billed
- 2,879
- Patients’ average age
- 77
| Service | Times | Patients |
|---|---|---|
| Established patient complete exam of visual system | 959 | 940 |
| Established patient office or other outpatient visit, 20-29 minutes | 381 | 301 |
| Imaging of retina | 381 | 367 |
| Established patient office or other outpatient visit, 30-39 minutes | 361 | 226 |
| Imaging of optic nerve | 213 | 135 |
| Measurement of corneal curvature and depth of eye | 156 | 76 |
| Exam of visual field with extended testing | 134 | 133 |
| Removal of cataract with insertion of prosthetic lens | 119 | 70 |
| New patient complete exam of visual system | 75 | 75 |
| Removal of recurring cataract in lens capsule using a laser | 30 | 24 |
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 |
|---|---|
| Latanoprost Other prescribers in Dayton, OH | 751 |
| Timolol Maleate Other prescribers in Dayton, OH | 415 |
| Prednisolone Acetate Other prescribers in Dayton, OH | 123 |
| Dorzolamide-Timolol (dorzolamide hcl/timolol maleat) Other prescribers in Dayton, OH | 92 |
| Erythromycin (erythromycin base) Other prescribers in Dayton, OH | 82 |
| Tobramycin-Dexamethasone (tobramycin/dexamethasone) Other prescribers in Dayton, OH | 53 |
| Lumigan (bimatoprost) Other prescribers in Dayton, OH | 49 |
| Doxycycline Hyclate Other prescribers in Dayton, OH | 42 |
| Brimonidine Tartrate Other prescribers in Dayton, OH | 39 |
| Dorzolamide Hcl Other prescribers in Dayton, OH | 33 |
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, 6 companies reported 7 payments worth $206 in total to this clinician.
| Harrow Eye, LLC | $52.77 |
|---|---|
| Johnson & Johnson Surgical Vision, Inc. | $45.80 |
| Sun Pharmaceutical Industries Inc. | $37.24 |
| Alcon Vision LLC | $34.57 |
| Astellas Pharma US Inc | $20.02 |
| Amgen Inc. | $15.48 |
| Food and Beverage | $206 |
|---|
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.