Dr. Mark E. Fleming, DO
Orthopedic Surgery (Orthopaedic Trauma Physician)
1200 N State St
Los Angeles, CA 90089
Who else practices at this address →
Los Angeles County includes primary care (7% of residents) and mental health (13% of residents) shortage areas. About shortage areas
At a glance
- Years since graduation
- 27
- In the NPI registry since
- 2006
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
- 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Medicare’s Care Compare data doesn’t list this clinician’s medical school. 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 Trauma Physician primary
CA license 14334
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Los Angeles General Medical Center Los Angeles, CA
- Providence St Mary Medical Center Apple Valley, CA
Medical groups
- Paul J Wisniewski Do Inc (19 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
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 20-29 minutes | 72 | 45 |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 14 | 14 |
| New patient office or other outpatient visit, 30-44 minutes | 13 | 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.
Payments from drug and device companies
In 2025, 1 companies reported 3 payments worth $2,401 in total to this clinician.
| Synthes GmbH | $2,401 |
|---|
| Speaking at a medical education program | $1,500 |
|---|---|
| Travel and Lodging | $799 |
| Food and Beverage | $101 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Synthes GmbH Aug 23, 2025 | Speaking at a medical education programCompany’s descriptionINDIRECT VALUE TRANSFER | $1,500 |
| Synthes GmbH Aug 23, 2025 | Travel and Lodging travel to HOUSTON, TX · in-kind | $799 |
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.