Dr. Mark K. Harmon, M.D.
Ophthalmology (Ophthalmology Physician)
- Medicare participating
At a glance
- Medical school
- University of Oklahoma College of Medicine (1989)
- Years since graduation
- 37
- In the NPI registry since
- 2005
- Medicare patients seen, 2024
- 1,024
Licensed in Texas since 1990, according to the Texas Medical Board. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.
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
- 1989Medical school: University of Oklahoma College 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
TX license H7063 (first issued 1990; active)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Medical groups
- Eye Centers of Southeast Texas LLP (17 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
- 1,024
- Services billed
- 3,476
- Patients’ average age
- 76
| Service | Times | Patients |
|---|---|---|
| Measurement of corneal curvature and depth of eye | 566 | 331 |
| Removal of cataract with insertion of prosthetic lens | 545 | 306 |
| Established patient complete exam of visual system | 484 | 475 |
| Imaging of retina | 351 | 329 |
| Established patient office or other outpatient visit, 30-39 minutes | 287 | 274 |
| Imaging of optic nerve | 225 | 204 |
| Established patient office or other outpatient visit, 20-29 minutes | 166 | 131 |
| Removal of recurring cataract in lens capsule using a laser | 147 | 147 |
| New patient office or other outpatient visit, 45-59 minutes | 142 | 142 |
| New patient complete exam of visual system | 121 | 121 |
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 Beaumont, TX | 581 |
| Brimonidine Tartrate Other prescribers in Beaumont, TX | 155 |
| Dorzolamide-Timolol (dorzolamide hcl/timolol maleat) Other prescribers in Beaumont, TX | 132 |
| Prednisolone Acetate Other prescribers in Beaumont, TX | 111 |
| Timolol Maleate Other prescribers in Beaumont, TX | 84 |
| Travoprost Other prescribers in Beaumont, TX | 76 |
| Doxycycline Hyclate Other prescribers in Beaumont, TX | 71 |
| Ketorolac Tromethamine Other prescribers in Beaumont, TX | 51 |
| Neomycin-Polymyxin-Dexameth (neomycin/polymyxin b/dexametha) Other prescribers in Beaumont, TX | 39 |
| Dorzolamide Hcl Other prescribers in Beaumont, TX | 34 |
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, 7 companies reported 22 payments worth $842 in total to this clinician.
| Alcon Vision LLC | $289 |
|---|---|
| Ocular Therapeutix, Inc. | $184 |
| Johnson & Johnson Surgical Vision, Inc. | $131 |
| Bausch & Lomb Americas Inc. | $105 |
| Dompe US, Inc. | $52.32 |
| Harrow Eye, LLC | $51.56 |
| Tarsus Pharmaceuticals, Inc. | $29.08 |
| Food and Beverage | $842 |
|---|
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.