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California
In 2025, 97,674 providers in California had general (non-research) payments reported to CMS. Half received less than $172 for the year, and nine in ten received less than $2,120.
97,674providers with payments in 2025
$172median total for the year
$2,120nine in ten received less than
$3,876average total for the year
Providers with the largest 2025 general-payment totals
Ordered by 2025 general-payment totals as reported to CMS. A large total is not evidence of wrongdoing; context is below the table.
| Provider | Location | 2025 general | All payments 2019-2025 including research |
|---|---|---|---|
| Michael S Lewis | Los Angeles, CA | $136,974.38 | $220,478.23 |
| Joseph E Gorek | Oakland, CA | $136,903.11 | $1,875,694.59 |
| Liberty O Macias | Redlands, CA | $136,441.11 | $288,210.08 |
| Matthew Henry Herrmann | Los Angeles, CA | $136,438.36 | $384,423.37 |
| Walid Ayoub | West Hollywood, CA | $136,244.52 | $415,957.70 |
| Allan K Mishra | Menlo Park, CA | $135,918.76 | $1,483,957.71 |
| Mark Alan Schrumpf | San Francisco, CA | $135,880.42 | $267,876.34 |
| Douglas N Gibson | La Jolla, CA | $135,842.28 | $726,942.75 |
| Mitchell C Shultz | Northridge, CA | $135,376.57 | $830,855.25 |
| Bryan Gescuk | San Mateo, CA | $133,534.77 | $376,905.24 |
| Raed M Ali | Fullerton, CA | $133,236.79 | $416,972.19 |
| Gregory P Fontana | Thousand Oaks, CA | $133,084.42 | $889,893.79 |
| Deryk G Jones | San Carlos, CA | $132,808.53 | $1,092,279.55 |
| Raghuveer Ranganathan | Los Angeles, CA | $132,618.05 | $609,091.31 |
| Erik Hh Gaensler | Walnut Creek, CA | $132,540.00 | $757,153.52 |
| Stephen Liu | Los Angeles, CA | $131,599.42 | $785,617.02 |
| Darren Paul Berman | Los Angeles, CA | $131,475.23 | $391,501.26 |
| Andrea Nicole Soares | Sacramento, CA | $131,327.37 | $159,325.37 |
| Chaitali Singh Nangia | Costa Mesa, CA | $131,218.69 | $697,242.47 |
| Gnanagurdasan Prakasam | Sacramento, CA | $131,012.22 | $832,939.36 |
| Warner W Carr | Laguna Niguel, CA | $130,920.23 | $576,755.72 |
| Kenneth Han | Anaheim, CA | $130,706.29 | $137,216.18 |
| Kuldev Singh | Stanford, CA | $130,684.28 | $1,486,881.99 |
| Vipul Raman Dev | Bakersfield, CA | $130,256.13 | $1,069,609.23 |
| Leslie P Lundt | Santa Barbara, CA | $130,108.33 | $429,675.78 |
| Erin M Jensen | Upland, CA | $129,986.90 | $716,259.99 |
| Sanjivan S Kohli | San Juan Capistrano, CA | $129,864.85 | $214,770.28 |
| David I Deyhimy | Laguna Hills, CA | $128,832.79 | $344,141.45 |
| Ram K Alluri | Los Angeles, CA | $128,724.15 | $215,679.21 |
| Christian Spies | Burlingame, CA | $128,524.56 | $718,809.02 |
| Ahmad Abou Abbass | Mission Viejo, CA | $128,343.90 | $507,882.20 |
| Logan D Schneider | Stanford, CA | $128,216.25 | $505,794.63 |
| Natalie A Afshari | La Jolla, CA | $128,083.79 | $205,304.09 |
| Alberto J Panero | Sacramento, CA | $128,075.47 | $456,412.03 |
| Michael Javaheri | Beverly Hills, CA | $127,930.91 | $556,860.27 |
| Xuanha N White | San Diego, CA | $127,927.15 | $343,020.58 |
| Misagh Karimi | Newport Beach, CA | $126,941.86 | $782,308.92 |
| Garrett B Wong | Sacramento, CA | $126,233.54 | $504,375.07 |
| Arash Nayeri | Los Angeles, CA | $125,922.35 | $280,668.73 |
| Jack David Schim | Carlsbad, CA | $125,883.19 | $1,703,869.43 |
| Brian H Weeks | San Diego, CA | $125,874.37 | $997,555.16 |
| John G Apostolides | San Diego, CA | $125,869.95 | $460,433.82 |
| Theodore Solomon | Los Angeles, CA | $125,781.62 | $130,981.76 |
| Christopher Lee | Los Angeles, CA | $125,442.08 | $475,078.79 |
| Natasha Mesinkovska | Mission Viejo, CA | $125,350.18 | $529,634.56 |
| James Benjamin Chen | Mission Viejo, CA | $125,185.61 | $501,729.90 |
| Jay E Gladstein | Los Angeles, CA | $125,045.84 | $658,140.58 |
| Chawannuch Ruaengsri | Palo Alto, CA | $124,888.91 | $188,420.03 |
| George Bernard Semeniuk | Newport Beach, CA | $124,853.17 | $483,155.77 |
| Ben Dubois | La Mesa, CA | $124,653.70 | $2,007,001.54 |
Source: CMS Open Payments, program years 2019-2025, as reported to CMS by drug and device makers (published June 30, 2026).