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

Christopher David Hamilton, MD

Individual provider Sports Medicine (Orthopaedic Surgery) Physician · NPI 1598795130

Christopher David Hamilton, MD practises Orthopedic Surgery in Bakersfield, California. Graduated from University of California, Geffen School of Medicine in 1988, 38 years ago. Practices with Regents of the University of California, a 136-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
38
Trained at
University of California, Geffen School of Medicine
Licensed in
CA
In the registry since
2006
Specialties on file
3
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

5201 Truxtun Ave
Bakersfield, CA 93309-0421
Phone: (661) 328-5565
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Orthopaedic Surgery Physician (primary) Taxonomy 207X00000X · Licence G76486 (CA)
Sports Medicine (Orthopaedic Surgery) Physician Taxonomy 207XX0005X · Licence G76486 (CA)
Orthopaedic Foot and Ankle Surgery Physician Taxonomy 207XX0004X · Licence G76486 (CA)

Record details

NPI number1598795130
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 3, 2006
Last updated in NPPESApril 16, 2025
Certification dateApril 16, 2025

Medicare enrollment

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

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolUNIVERSITY OF CALIFORNIA, GEFFEN SCHOOL OF MEDICINE
Graduated 1988 (38 years in practice)
Group practice Regents Of The University Of California — 136 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.

Lower limb (leg) arthroscopy (minimally invasive joint repair) 24 times · 94th percentile
Upper limb (arm) arthroscopy (minimally invasive joint repair) 53 times · 87th percentile
Knee replacement 27 times · 61st percentile

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 patients210
Services billed 807 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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.

Travel and Lodging $914 1 payment · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $791 3 payments · a meal or drink at a meeting or visit, not a fee
Gift $24 1 payment

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.

Colleagues at Regents of the University of California

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 136 clinicians in the practice; 12 are shown here.

Other providers in Bakersfield