Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Dr. Mark Evans Fleming, DO

Individual provider Orthopaedic Trauma Physician · NPI 1881638583

Dr. Mark Evans Fleming, DO practises Orthopedic Surgery in Los Angeles, California. Qualified in 1999, 27 years ago. Practices with Paul J Wisniewski DO Inc, a 19-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
27
Licensed in
CA
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

1200 N State St
Los Angeles, CA 90089-1001
Phone: (301) 956-0583
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 18523 Corwin Rd Ste A, Apple Valley, CA 92307-2300 — (909) 712-2764

Specialties & licences

Orthopaedic Trauma Physician (primary) Taxonomy 207XX0801X · Licence 14334 (CA)

Record details

NPI number1881638583
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJune 15, 2006
Last updated in NPPESSeptember 12, 2025
Certification dateSeptember 12, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolOTHER
Graduated 1999 (27 years in practice)
Group practice Paul J Wisniewski Do Inc — 19 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Compensation for serving as faculty or as a speaker for a medical education program $1,500 1 payment
Travel and Lodging $799 1 payment · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $101 1 payment · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Paul J Wisniewski DO Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 19 clinicians in the practice; 12 are shown here.

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