Dr. Theodore K. Gregorius, M.D.
Orthopedic Surgery (Orthopaedic Surgery Physician)
- Medicare participating
At a glance
- Medical school
- Loma Linda University School of Medicine (2000)
- Years since graduation
- 26
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 219
Licensed in California since 2003, 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
- 2000Medical school: Loma Linda University 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
-
Orthopaedic Surgery Physician primary
CA license A84930 (first issued 2003; current)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Hoag Memorial Hospital Presbyterian Newport Beach, CA
- Hoag Orthopedic Institute Irvine, CA
Medical groups
- Faculty Physicians and Surgeons of Llusm (1,315 clinicians)
- Orthopaedic Specialty Institute Medical Group of Orange County (64 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
- 219
- Services billed
- 2,509
- Patients’ average age
- 73
| Service | Times | Patients |
|---|---|---|
| Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 1,083 | 88 |
| Established patient office or other outpatient visit, 20-29 minutes | 170 | 95 |
| Aspiration and/or injection of fluid large joint using ultrasound guidance | 124 | 85 |
| X-ray of shoulder, minimum of 2 views | 115 | 87 |
| Established patient office or other outpatient visit, 30-39 minutes | 90 | 62 |
| New patient office or other outpatient visit, 30-44 minutes | 55 | 55 |
| New patient office or other outpatient visit, 45-59 minutes | 52 | 52 |
| X-ray of knee, 4 or more views | 30 | 24 |
| Removal of extensive shoulder joint tissue using an endoscope | 15 | 13 |
| Repair of shoulder rotator cuff using an endoscope | 14 | 13 |
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 Newport Beach, CA | 33 |
| Hydrocodone-Acetaminophen (hydrocodone/acetaminophen) Other prescribers in Newport Beach, CA | 25 |
| Ondansetron Odt (ondansetron) Other prescribers in Newport Beach, CA | 20 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.