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

Lawrence R. Walker, MD

Individual provider Orthopaedic Surgery Physician · NPI 1083619910

Lawrence R. Walker, MD practises Orthopedic Surgery in Lake Arrowhead, California. Graduated from University of Virginia School of Medicine in 1978, 48 years ago. Practices with San Bernardino Medical Orthopaedic Group Inc, a 91-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
48
Trained at
University of Virginia School of Medicine
Licensed in
CA
In the registry since
2005
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

29099 Hospital Rd Ste 114
Lake Arrowhead, CA 92352 Not confirmed with CMS for 14 years — call before visiting
Phone: (909) 726-6100
Fax: (909) 557-1745
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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 C42773 (CA)

Record details

NPI number1083619910
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 16, 2005
Last updated in NPPESJuly 5, 2012

Medicare enrollment

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

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolUNIVERSITY OF VIRGINIA SCHOOL OF MEDICINE
Graduated 1978 (48 years in practice)
Group practice San Bernardino Medical Orthopaedic Group Inc — 91 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.

Knee replacement 11 times · 37th percentile
Hip replacement 1–10 times
Removal of tissue 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 patients254
Services billed 2,835 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at San Bernardino Medical Orthopaedic Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 91 clinicians in the practice; 12 are shown here.

Other providers in Lake Arrowhead