Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Stephen T Gardner, MD

Individual provider Orthopaedic Surgery Physician · NPI 1871753392

Stephen T Gardner, MD practises Sports Medicine in Mission Viejo, California. Qualified in 2008, 18 years ago. Practices with Community Orthopedic Medical Group, a 16-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
18
Licensed in
CA
In the registry since
2008
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

26401 Crown Valley Pkwy Ste 101
Mission Viejo, CA 92691-6302
Phone: (949) 348-4000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 26401 Crown Valley Pkwy Ste 101, Mission Viejo, CA 92691-6302 — (949) 348-4000

Specialties & licences

Orthopaedic Surgery Physician (primary) Taxonomy 207X00000X · Licence A124837 (CA)
Sports Medicine (Orthopaedic Surgery) Physician Taxonomy 207XX0005X · Licence A124837 (CA)

Record details

NPI number1871753392
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 10, 2008
Last updated in NPPESDecember 4, 2024
Certification dateDecember 4, 2024

Medicare enrollment

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

Medicare specialtySPORTS MEDICINE
Also practisesORTHOPEDIC SURGERY
Medical schoolOTHER
Graduated 2008 (18 years in practice)
Group practice Community Orthopedic Medical Group — 16 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Hip replacement 20 times · 66th percentile
Knee replacement 28 times · 62nd percentile
Upper limb (arm) arthroscopy (minimally invasive joint repair) 11 times · 46th percentile
Lower limb (leg) arthroscopy (minimally invasive joint repair) 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients673
Services billed 9,656 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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.

Food and Beverage $941 11 payments · 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. Those with a page here are linked.

  • Providence Mission Hospital Hospital · Mission Viejo, CA · listed as Mission Hospital
  • N & D Healthcare Services Inc Home health agency · Pasadena, CA · listed as N&d Health Care Services, Inc
  • Grandcare Home Health Services Home health agency · Pasadena, CA
  • Providence At Home With Compassus Home Health Orange County Home health agency · Anaheim, CA
  • Providence At Home With Compassus Home Health, Orange County South Home health agency · Irvine, CA

Colleagues at Community Orthopedic Medical Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 16 clinicians in the practice; 12 are shown here.

Other providers in Mission Viejo