Pediatric Orthopaedic Surgeons in California
Data updated monthly · Last refresh October 2026
79 Pediatric Orthopaedic Surgery providers practice in California. The largest concentration is in Los Angeles. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.
79providers
Los Angelestop city
Pediatric Orthopaedic Surgery by city in California
Choose a city to see providers there.
Where Pediatric Orthopaedic Surgeons in California practice
From CMS Medicare enrollment records covering 16 of the 79 providers listed here (20%). Providers who do not bill Medicare are not included in these figures.
Largest practice groups
| Group (as registered with Medicare) | Pediatric Orthopaedic Surgeons | All clinicians in group | Main city |
| County of Santa Clara | 3 | 1,000 | San Jose |
| Lpch Medical Group Div of Lucile | 3 | 332 | Palo Alto |
| Stanford Health Care | 2 | 3,152 | Stanford |
| Childrens Hospital Los Angeles Medical Group Inc. | 2 | 288 | Los Angeles |
Hospitals where they hold privileges
| Hospital | City | Ownership | CMS star rating | Pediatric Orthopaedic Surgeons affiliated |
| Santa Clara Valley Medical Center | San Jose | Government | 2 of 5 | 2 |
Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.
Pediatric Orthopaedic Surgery providers in California
Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
Dr. Robert Cho, M.D.Beverly Hills, CA · $89,257 in drug and device payments (2025) ·
(424) 249-3721 Dr. Vivek Abraham, MDCamp Pendleton, CA · $154 in drug and device payments (2025) ·
(760) 725-1619 Dr. Lawrence Rinsky, M.D.Cupertino, CA · No drug or device payments recorded (2025) ·
(408) 799-8379 Dr. Julio Westerband, MDIrvine, CA · No drug or device payments recorded (2025) ·
(714) 679-2332 Dr. Charles DurninLong Beach, CA · No drug or device payments recorded (2025) ·
(562) 439-4695 Dr. Leah Pike, MDLos Alamitos, CA · No drug or device payments recorded (2025) ·
(562) 936-9200 Dr. Amelia Lindgren, MDLos Angeles, CA · $170 in drug and device payments (2025) ·
(310) 423-6665 Dr. Graham Fedorak, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(213) 388-3151 Dr. Hugh Watts, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(213) 368-3338 Dr. Kit SongLos Angeles, CA · No drug or device payments recorded (2025) ·
(213) 368-3338 Dr. Lindsay Andras, MDLos Angeles, CA · $42,546 in drug and device payments (2025) ·
(323) 361-4153 Dr. Mauricio Silva, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(213) 742-1000 Dr. Monro Hoffer, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(213) 742-6527 Dr. Monthakan Ratnarathorn, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(310) 497-5774 Dr. Paul MerkleLos Angeles, CA · No drug or device payments recorded (2025) ·
(323) 226-2170 Dr. Robert Kay, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(323) 669-2142 Dr. Stephanie Lamer, M.D.Los Angeles, CA · $73 in drug and device payments (2025) ·
(541) 553-3771 Dr. Thomas Grogan, M.D.Los Angeles, CA · $48 in drug and device payments (2025) ·
(310) 828-5441 Dr. Vernon Tolo, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(323) 669-2142 Dr. William Oppenheim, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(310) 206-6345 Dr. Jeffrey Kanel, MDLos Gatos, CA · $56,519 in drug and device payments (2025) ·
(408) 412-8100 Dr. Jill Friebele, M.D.Madera, CA · No drug or device payments recorded (2025) ·
(559) 353-5700 Dr. Jon Oda, M.D.Madera, CA · No drug or device payments recorded (2025) ·
(559) 353-5941 Dr. Purushottam Gholve, M.D. Dr. James Policy, MDOakland, CA · $1,899 in drug and device payments (2025) ·
(510) 428-3238 Dr. James Shively, M.D.Oakland, CA · No drug or device payments recorded (2025) ·
(510) 428-3000 Dr. Jason Jagodzinski, M.D. Dr. Nirav Pandya, MDOakland, CA · No drug or device payments recorded (2025) ·
(510) 428-3238 Dr. Amirhossein Misaghi, M.D. Dr. Carl Weinert, MDOrange, CA · No drug or device payments recorded (2025) ·
(714) 633-2111 Dr. Francois Lalonde, M.D. Dr. Jessica Mcmichael, M.D.Orange, CA · No drug or device payments recorded (2025) ·
(714) 633-2111 Dr. John Schlechter, D.O. Dr. Kasen Matranga, PA-COrange, CA · No drug or device payments recorded (2025) ·
(888) 770-2462 Dr. Samuel Rosenfeld, M.DOrange, CA · No drug or device payments recorded (2025) ·
(714) 633-2111 Dr. Leonard Kalfuss, MDPalm Springs, CA · No drug or device payments recorded (2025) ·
(760) 327-8595 Dr. Charles Chan, MDPalo Alto, CA · $20 in drug and device payments (2025) ·
(650) 497-8000 Dr. James Gamble, M.D., PH.D.Palo Alto, CA · No drug or device payments recorded (2025) ·
(650) 497-8000 Dr. Jeffrey Young, MDPalo Alto, CA · $14 in drug and device payments (2025) ·
(650) 497-8263 Dr. John Vorhies, MDPalo Alto, CA · $183 in drug and device payments (2025) ·
(650) 497-8000 Dr. Katherine Krenek, MDPalo Alto, CA · No drug or device payments recorded (2025) ·
(650) 497-8000 Dr. Kevin Shea, MDPalo Alto, CA · $81 in drug and device payments (2025) ·
(650) 497-8000 Dr. Molly Meadows, MDPalo Alto, CA · $168 in drug and device payments (2025) ·
(650) 497-8000 Dr. Stephanie Kha, MDPalo Alto, CA · $10,035 in drug and device payments (2025) ·
(650) 497-8000 Dr. Cynthia Nguyen, MDPasadena, CA · $123 in drug and device payments (2025) ·
(626) 389-9300 Common questions
How many Pediatric Orthopaedic Surgery providers are in California?There are 79 Pediatric Orthopaedic Surgery providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.
Which cities in California have the most Pediatric Orthopaedic Surgery providers?Los Angeles (14), San Diego (9), Palo Alto (8) have the highest concentration of Pediatric Orthopaedic Surgery providers in California.
How many Pediatric Orthopaedic Surgery providers in California received drug or device company payments?41 of 79 Pediatric Orthopaedic Surgery providers in California (52%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
Where does this data come from?Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
Which hospitals do Pediatric Orthopaedic Surgeons in California work at?According to CMS facility affiliation records, the California hospitals where the most Pediatric Orthopaedic Surgeons hold privileges are Santa Clara Valley Medical Center in San Jose.
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