Kenneth H Chang, MD
General Surgery · Riverside
- Medicare standing
- Clear
- Enrolled, allowed to bill and order, not excluded
- Plans that list them
- 3
- 1 carrier
- Office
- 1
- Since medical school
- 22 years
- Tufts University School of Medicine, 2004
Offices
1 location · Southern California Permanente Medical Group · 11,250 clinicians in this group
Looking this up.
Plans that list them
3 plans · 1 carrier
A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Chang’s office at (951) 353-2000 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.
| Imperial Courage Plan (HMO) | Imperial Health Plan of California, Inc. | Listed | Sep 1, 2026 |
| Imperial Dynamic Plan (HMO) | Imperial Health Plan of California, Inc. | Listed | Sep 1, 2026 |
| Imperial Senior Value (HMO C-SNP) | Imperial Health Plan of California, Inc. | Listed | Sep 1, 2026 |
California Medical Board record
Licence A96260 · Current
Licensed to practise in California · since 2006 · expires 2028-07-31 · Tufts University School of Medicine.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
School, training and certification
What this clinician told their state board, medical school and everything before it. Only some states publish this, so nothing here means the state does not say, not that there was no training or certification.
Specialty certification
- American Board of Surgery - Surgery
Original Medicare doctor bills
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
Procedures Medicare counted
| Mastectomy | 1-10 | None |
Procedures year by year
| Procedure | 2013 | 2014 | 2015 | 2016 | 2017 | 2020 |
|---|---|---|---|---|---|---|
| Repair of groin hernia using an endoscope | 15 | – | 15 | – | – | – |
| Partial removal of large bowel using an endoscope | 11 | – | 12 | – | – | – |
| Insertion of central venous tube with port (5 years or older) | 19 | – | – | – | – | – |
| Removal of gallbladder using an endoscope | – | – | – | 16 | – | – |
| Insertion of stomach tube using a flexible endoscope | 15 | – | – | – | – | – |
Times billed to Original Medicare each year. A blank year means fewer than 11 people had it, or none: Medicare does not publish smaller counts. Medicare Advantage patients are not included.
Year by year
| 2020 | 11 | 15 | 59 | 2.98 | $12,188 | $2,102 |
| 2017 | 128 | 221 | 72 | 2.64 | $121,477 | $42,408 |
| 2016 | 247 | 445 | 73 | 2.36 | $319,536 | $105,792 |
| 2015 | 255 | 671 | 72 | 2.31 | $283,002 | $129,561 |
| 2014 | 237 | 575 | 72 | 2.16 | $211,715 | $105,217 |
| 2013 | 280 | 732 | 74 | 2.19 | $260,900 | $129,819 |
Original Medicare only. A service billed for fewer than 11 people in a year is hidden, so the lines can add up to less than the year's total.
See the services billed each year
2017: 4 services
| New patient visit (45+ min) | 35 | $3,662 | $105 |
| Short return visit | 32 | $1,298 | $36 |
| Short return visit (20+ min) | 22 | $1,244 | $50 |
| Initial hospital care with straightforward or low level of medical decision making, per day at least 40 minutes | 12 | $1,052 | $88 |
2016: 9 services
| Removal of gallbladder using an endoscope | 16 | $8,372 | $523 |
| New patient visit (45+ min) | 40 | $5,283 | $132 |
| Initial hospital care with straightforward or low-level medical decision making at least 55 minutes | 29 | $3,390 | $117 |
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 19 | $3,255 | $171 |
| Short return visit (20+ min) | 42 | $2,861 | $57 |
| New patient visit (30+ min) | 24 | $2,022 | $84 |
| Initial hospital care with straightforward or low level of medical decision making, per day at least 40 minutes | 21 | $1,804 | $86 |
| Short return visit | 32 | $1,343 | $35 |
| Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes | 12 | $729 | $33 |
2015: 10 services
| Partial removal of large bowel using an endoscope | 12 | $11,078 | $923 |
| Initial hospital care with straightforward or low-level medical decision making at least 55 minutes | 61 | $7,135 | $115 |
| Repair of groin hernia using an endoscope | 15 | $6,705 | $447 |
| New patient visit (45+ min) | 49 | $6,410 | $131 |
| Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes | 52 | $4,594 | $33 |
| Short return visit (20+ min) | 51 | $4,081 | $57 |
| Initial hospital care with straightforward or low level of medical decision making, per day at least 40 minutes | 36 | $3,070 | $83 |
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 12 | $2,061 | $172 |
| Short return visit | 48 | $1,939 | $33 |
| New patient visit (30+ min) | 21 | $1,714 | $82 |
2014: 8 services
| Initial hospital care with straightforward or low-level medical decision making at least 55 minutes | 50 | $6,213 | $117 |
| Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes | 47 | $4,898 | $34 |
| New patient visit (45+ min) | 26 | $3,601 | $139 |
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 18 | $3,129 | $174 |
| Initial hospital care with straightforward or low level of medical decision making, per day at least 40 minutes | 30 | $2,676 | $86 |
| New patient visit (30+ min) | 27 | $2,417 | $90 |
| Short return visit | 40 | $1,887 | $34 |
| Short return visit (20+ min) | 16 | $1,042 | $58 |
2013: 12 services
| Initial hospital care with straightforward or low-level medical decision making at least 55 minutes | 63 | $7,641 | $114 |
| Repair of groin hernia using an endoscope | 15 | $7,555 | $504 |
| Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes | 64 | $6,332 | $33 |
| Partial removal of large bowel using an endoscope | 11 | $5,570 | $506 |
| Insertion of central venous tube with port (5 years or older) | 19 | $5,497 | $289 |
| New patient visit (45+ min) | 35 | $4,769 | $136 |
| Initial hospital care with straightforward or low level of medical decision making, per day at least 40 minutes | 43 | $3,805 | $85 |
| New patient visit (30+ min) | 42 | $3,555 | $85 |
| Short return visit | 56 | $3,477 | $39 |
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 15 | $2,542 | $169 |
| Insertion of stomach tube using a flexible endoscope | 14 | $1,981 | $132 |
| New patient visit (15+ min) | 12 | $807 | $67 |
Medicaid work
$0 in 2023
Medicaid paid $0 for 13 billed services this clinician did in 2023, up to 13 people in a month for one service.
Medicaid and CHIP claims where this clinician did the service, fee-for-service and managed care together. Any month with fewer than 11 patients is hidden, so small Medicaid practices undercount.
| Return visit (30+ min) | 13 | $0 |
| 2023 | 13 | 1 | 13 | $0 |
Drugs they prescribed that Part D paid
$3,226
Pharmacies billed $3,226 in 2024.
This is pharmacy cost, not the office bill, and not what patients paid.
Opioids were 36% of their Part D prescriptions (46 of 128) in 2024. Above the middle of the specialty; the typical general surgery clinician is at 34%. Surgeons prescribe little besides pain medicine after an operation, so their opioid share runs high.
121 generic and fewer than 11 brand-name prescriptions · $3,226 in drug cost · 14 antibiotic prescriptions.
Part D prescriptions only. The opioid rate is opioid prescriptions as a share of all this clinician's Part D prescriptions; surgeons and pain specialists run higher than others, so it is shown against the same specialty.
| Ibuprofen | 30 | $292 | $9 |
| Oxycodone | 23 | $166 | $7 |
| Tramadol | 20 | $115 | $6 |
Year by year
| 2024 | 128 | 67 | 36% (46) | None | $3,226 |
| 2023 | 128 | 68 | 35% (45) | None | $3,000 |
| 2022 | 213 | 79 | 26% (56) | None | $13,092 |
| 2021 | 215 | 64 | 23% (49) | None | $14,371 |
| 2020 | 165 | 65 | 28% (46) | 25% | $11,885 |
| 2019 | 165 | 59 | 25% (41) | 31% | $17,314 |
| 2018 | 178 | 86 | 46% (81) | 15% | $10,317 |
| 2017 | 96 | 50 | 40% (38) | None | $1,331 |
| 2016 | 121 | 56 | 36% (43) | None | $2,731 |
| 2015 | 189 | 77 | 51% (97) | 7% | $8,510 |
| 2014 | 159 | 71 | 39% (62) | 8% | $2,290 |
| 2013 | 105 | 65 | 51% (53) | 13% | $2,234 |
Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.
See the drugs prescribed each year
2023: 2 drugs
| Ibuprofen | 36 | $340 | $9 |
| Oxycodone | 34 | $255 | $7 |
2022: 4 drugs
| Januvia | 16 | $4,117 | $257 |
| Ibuprofen | 51 | $482 | $9 |
| Oxycodone | 47 | $333 | $7 |
| Pantoprazole | 13 | $166 | $13 |
2021: 5 drugs
| Januvia | 28 | $6,452 | $230 |
| Hydrocodone-Acetaminophen | 31 | $275 | $9 |
| Ibuprofen | 22 | $208 | $9 |
| Glimepiride | 11 | $197 | $18 |
| Metformin | 11 | $71 | $6 |
2020: 2 drugs
| Januvia | 15 | $3,581 | $239 |
| Hydrocodone-Acetaminophen | 41 | $417 | $10 |
2019: 6 drugs
| Levemir | 18 | $6,015 | $334 |
| Januvia | 26 | $5,976 | $230 |
| Hydrocodone-Acetaminophen | 41 | $342 | $8 |
| Pioglitazone | 12 | $298 | $25 |
| Levetiracetam | 12 | $171 | $14 |
| Lisinopril | 12 | $77 | $6 |
2018: 2 drugs
| Hydrocodone-Acetaminophen | 69 | $608 | $9 |
| Terazosin | 12 | $169 | $14 |
2017: 2 drugs
| Hydrocodone-Acetaminophen | 31 | $197 | $6 |
| Omeprazole | 11 | $194 | $18 |
2016: 2 drugs
| Hydrocodone-Acetaminophen | 33 | $281 | $9 |
| Omeprazole | 13 | $219 | $17 |
2015: 2 drugs
| Hydrocodone-Acetaminophen | 73 | $716 | $10 |
| Tamsulosin | 17 | $566 | $33 |
2014: 3 drugs
| Hydrocodone-Acetaminophen | 54 | $660 | $12 |
| Tamsulosin | 17 | $173 | $10 |
| Methocarbamol | 12 | $162 | $13 |
2013: 1 drug
| Hydrocodone-Acetaminophen | 51 | $368 | $7 |
Money from drug and device companies
$655 in 2025
| 2025 | 5 | 17 | None | $655 |
| 2024 | 5 | 14 | None | $580 |
| 2023 | 4 | 12 | None | $1,284 |
| 2022 | 2 | 17 | None | $4,587 |
| 2021 | 1 | 1 | None | $30 |
| 2019 | 2 | 2 | None | $239 |
Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.
A payment is not proof that care is biased.
| Davol | Phasix Mesh | $310 | 5 payments
|
| Intuitive Surgical | Da Vinci Surgical System | $227 | 9 payments
|
| Conmed | Airseal | $60 | 1 payment
|
| GlaxoSmithKline | Shingrix | $30 | 1 payment
|
| Pfizer | Prevnar 20 | $28 | 1 payment
|
See all 17 published payments
| Intuitive Surgical | Meals · 2025-12-09 | Da Vinci Surgical System | $19 |
| Pfizer | Meals · 2025-10-27 | Prevnar 20 | $28 |
| Intuitive Surgical | Meals · 2025-10-07 | Da Vinci Surgical System | $50 |
| Intuitive Surgical | Meals · 2025-10-07 | Da Vinci Surgical System | $30 |
| GlaxoSmithKline | Meals · 2025-09-26 | Shingrix | $30 |
| Intuitive Surgical | Meals · 2025-09-16 | Da Vinci Surgical System | $12 |
| Intuitive Surgical | Meals · 2025-09-16 | Da Vinci Surgical System | $34 |
| Davol | Meals · 2025-08-29 | Phasix Mesh | $97 |
| Intuitive Surgical | Meals · 2025-08-19 | Da Vinci Surgical System | $64 |
| Davol | Meals · 2025-08-08 | Phasix Mesh | $55 |
| Conmed | Meals · 2025-06-19 | Airseal | $60 |
| Davol | Meals · 2025-05-02 | Phasix Mesh | $53 |
| Intuitive Surgical | Meals · 2025-02-25 | Da Vinci Surgical System | $12 |
| Intuitive Surgical | Meals · 2025-02-25 | Da Vinci Surgical System | $4 |
| Intuitive Surgical | Meals · 2025-02-25 | Da Vinci Surgical System | $2 |
| Davol | Meals · 2025-02-22 | Phasix Mesh | $57 |
| Davol | Meals · 2025-01-30 | Phasix Mesh | $48 |
See earlier years (2024, 2023, 2022, 2021, 2019)
2024: $580
| Intuitive Surgical | Da Vinci Surgical System | $208 | 7 payments
|
| Davol | Phasix Mesh | $128 | 2 payments
|
| Medtronic | Ligasure | $118 | 2 payments
|
| Becton Dickinson and | Phasix Mesh | $71 | 1 payment
|
| Pfizer | Prevnar 20 | $54 | 2 payments
|
2023: $1,284
| W. L. Gore & Associates | Gore Bio-A Tissue Reinforcement | $569 | 4 payments
|
| Intuitive Surgical | Da Vinci Surgical System | $411 | 4 payments
|
| Medtronic | Ligasure | $156 | 3 payments
|
| Endogastric Solutions | Esophyx | $148 | 1 payment
|
2022: $4,587
| Intuitive Surgical | Davinci Xi | $4,425 | 15 payments
|
| Endogastric Solutions | Esophyx | $162 | 2 payments
|
2021: $30
| Apollo Endosurgery US | Overstitch Endoscopic Suturing System | $30 | 1 payment
|
2019: $239
| Novartis Pharmaceuticals | Beovu | $125 | 1 payment
|
| Covidien LP | Beacon | $114 | 1 payment
|
Professional record
- NPI
- 1952544355
- Licence
- CA A96260California A96260: Current · expires 2028-07-31
- Trained
- Tufts University School of Medicine, 2004 · 22 years ago
- Gender
- Male
More record details
- Sole proprietor
- No
- Taxonomy
- Surgery (208600000X)
- Mailing address
- 350 30th St, 430, Oakland, CA, 94609
- NPI first listed
- 2009-04-14
- NPI last updated
- 2021-11-29
This is when the NPI record was last certified, not a medical board exam.
This office lists an electronic records connection.