Dr. Michael Y. Oh, MD
Neurosurgery (Neurological Surgery Physician)
- Medicare participating
At a glance
- Medical school
- University of Southern California Keck School of Medicine (1996)
- Years since graduation
- 30
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 208
Licensed in California since 2018, according to the Medical Board of California. 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
- 1996Medical school: University of Southern California Keck School 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
-
Neurological Surgery Physician primary
CA license C156484 (first issued 2018; current) · PA license MD426457
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Uci Health-Orange Orange, CA
- Hoag Memorial Hospital Presbyterian Newport Beach, CA
Medical groups
- Regents of the University of California (27 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
- 208
- Services billed
- 460
- Patients’ average age
- 72
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 20-29 minutes | 143 | 106 |
| Fusion of additional segment of spine | 62 | 15 |
| New patient office or other outpatient visit, 30-44 minutes | 62 | 62 |
| New patient office or other outpatient visit, 45-59 minutes | 45 | 45 |
| Established patient office or other outpatient visit, 30-39 minutes | 41 | 37 |
| Insertion of cage or mesh device to spine bone and disc space during spine fusion | 20 | 11 |
| Placement of stabilizing device to back, 3-6 spine bone segments | 15 | 14 |
| Computer-assisted spinal procedure | 12 | 12 |
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.
Payments from drug and device companies
In 2025, 16 companies reported 39 payments worth $60,555 in total to this clinician.
| Gs Solutions, Inc. | $36,262 |
|---|---|
| Xtant Medical Inc | $9,444 |
| Spineology Inc. | $8,631 |
| Kyocera Medical Technologies, Inc. | $4,400 |
| Globus Medical, Inc. | $475 |
| Medtronic, Inc. | $360 |
| Stryker Corporation | $153 |
| Orthofix Medical, Inc. | $135 |
| Consulting Fee | $50,925 |
|---|---|
| Speaking at a medical education program | $6,750 |
| Food and Beverage | $2,846 |
| Travel and Lodging | $34.00 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Gs Solutions, Inc. Aug 28, 2025 | Consulting Fee | $36,000 |
| Spineology Inc. Jun 30, 2025 | Speaking at a medical education program OPTIMESH EXPANDABLE INTERBODY FUSION SYSTEM · Orthopedics/Orthopedic Surgery | $6,750 |
| Xtant Medical Inc May 6, 2025 | Consulting Fee | $6,125 |
| Kyocera Medical Technologies, Inc. Jan 22, 2025 | Consulting Fee | $4,400 |
| Xtant Medical Inc Jul 21, 2025 | Consulting Fee | $3,200 |
| Spineology Inc. Jun 30, 2025 | Consulting Fee OPTIMESH EXPANDABLE INTERBODY FUSION SYSTEM · Orthopedics/Orthopedic Surgery | $1,200 |
| Xtant Medical Inc May 6, 2025 | Travel and Lodging travel to SEATTLE, WA | $34.00 |
Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.
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.
Industry-funded research
Named as a principal investigator on 6 industry-funded studies in 2025, from 5 companies. The companies reported $109,371 in research payments for these studies, mostly to the institutions running them.
- BAGUERA-C IDE
Spineart SA - A prospective, multicenter study evaluating the safety performance of posterior fixation in trauma, reconstructive, and tumor surgery of the occipito-cervico-thoracic spine
Globus Medical, Inc. - A prospective, multicenter study evaluating the safety and performance of posterior fixation in trauma, reconstructive, and tumor surgery of the occipito-cervico-thoracic spine.
Globus Medical, Inc. - TLIF IDE Pivotal Study
Medtronic, Inc. - Aspire Trial
Cerapedics Inc. - A Pivotal Study of the Premia Spine TOPS™ System
Premia Spine, Ltd. · Completed · NCT03012776
From CMS Open Payments research payments, where companies name up to five principal investigators per payment. Research payments usually go to hospitals, universities and research sites, not to the investigator personally. A payment is not evidence of wrongdoing.