Johnny T Chang, MD
Plastic and Reconstructive Surgery · Palo Alto
- Medicare standing
- Clear
- Enrolled, allowed to bill and order, not excluded
- Plans that list them
- 2
- 2 carriers
- Offices
- 7
Offices
7 locations · Sutter Bay Medical Foundation · 3,783 clinicians in this group
Plans that list them
2 plans · 2 carriers
A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Chang’s office to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.
2 of 2 plans
| Alignment Health Sutter Advantage +More (HMO) | Alignment Health Plan | Listed | Oct 3, 2026 |
| DualConnect (HMO D-SNP) | Santa Clara Family Health Plan | Listed | Sep 1, 2026 |
California Medical Board record
Licence A121316 · Current
Licensed to practise in California · since 2012 · expires 2028-01-31 · Tufts University School of Medicine.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
Original Medicare doctor bills
$36,443
Medicare paid this office $36,443 for 45 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| New patient visit (60+ min) | 13 | $2,718 | $209 |
| Short return visit (20+ min) | 13 | $1,859 | $89 |
Procedures Medicare counted
| Mastectomy | 1-10 | None |
| Melanoma (skin cancer) excision | 12 | More than 66% of doctors who do this |
| Removal of skin lesions | 1-10 | None |
Who their Medicare patients are
45 Original Medicare patients in 2024. Average age 74 · Health risk score 0.84. At or below the middle of the specialty; the typical plastic and reconstructive surgery clinician is at 1.21.
Conditions among them: High blood pressure 49% · Cancer 44% · Chronic kidney disease 27%.
The office billed $197,518, Medicare allowed $46,210 and paid $36,443; for 161 services of 44 kinds.
Original Medicare patients only. A risk score of 1.0 is the average Medicare patient; higher means sicker. Any count under 11 is hidden.
Year by year
| 2024 | 45 | 161 | 74 | 0.84 | $197,518 | $36,443 |
| 2023 | 49 | 174 | 74 | 0.83 | $184,110 | $39,307 |
| 2022 | 69 | 288 | 73 | 0.67 | $330,316 | $68,599 |
| 2021 | 75 | 386 | 72 | 0.89 | $440,386 | $95,158 |
| 2020 | 88 | 364 | 74 | 0.90 | $356,409 | $77,820 |
| 2019 | 117 | 357 | 74 | 1.00 | $355,377 | $78,428 |
| 2018 | 78 | 239 | 74 | 0.94 | $209,011 | $49,505 |
| 2017 | 108 | 346 | 74 | 0.91 | $348,832 | $80,140 |
| 2016 | 126 | 367 | 75 | 0.98 | $394,994 | $91,293 |
| 2015 | 104 | 321 | 75 | 1.16 | $251,628 | $61,992 |
| 2014 | 99 | 301 | 75 | 1.05 | $210,384 | $48,881 |
| 2013 | 30 | 63 | 69 | 0.91 | $53,232 | $10,659 |
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
2023: 2 services
| Short return visit (20+ min) | 14 | $2,402 | $89 |
| New patient visit (30+ min) | 12 | $1,257 | $105 |
2022: 4 services
| New patient visit (60+ min) | 17 | $3,621 | $213 |
| Short return visit (20+ min) | 20 | $2,854 | $84 |
| Long return visit (40+ min) | 11 | $1,942 | $162 |
| New patient visit (45+ min) | 11 | $1,607 | $146 |
2021: 6 services
| Repair of wound by transferring skin, each additional 30.0 sq cm | 17 | $22,223 | $197 |
| Repair of wound by transferring skin, 30.1-60.0 sq cm | 18 | $14,553 | $606 |
| New patient visit (60+ min) | 21 | $4,498 | $214 |
| Long return visit (40+ min) | 18 | $3,295 | $173 |
| Short return visit (20+ min) | 25 | $3,029 | $78 |
| Return visit (30+ min) | 12 | $1,837 | $115 |
2020: 7 services
| Repair of wound by transferring skin, 30.1-60.0 sq cm | 11 | $6,104 | $509 |
| Short return visit (20+ min) | 26 | $2,976 | $73 |
| New patient visit (30+ min) | 32 | $2,829 | $88 |
| New patient visit (60+ min) | 11 | $2,170 | $197 |
| Long return visit (40+ min) | 13 | $2,001 | $143 |
| New patient visit (45+ min) | 11 | $1,752 | $159 |
| Return visit (30+ min) | 14 | $1,613 | $101 |
2019: 6 services
| Complicated repair of wound of scalp, arms, or legs, 2.6-7.5 cm | 18 | $6,816 | $379 |
| New patient visit (30+ min) | 47 | $4,533 | $96 |
| Short return visit (20+ min) | 29 | $3,159 | $63 |
| Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm | 17 | $2,340 | $123 |
| Return visit (30+ min) | 18 | $1,880 | $104 |
| New patient visit (45+ min) | 13 | $1,872 | $144 |
2018: 4 services
| Complicated repair of wound of trunk, 2.6-7.5 cm | 12 | $4,476 | $373 |
| New patient visit (30+ min) | 27 | $2,370 | $88 |
| Short return visit (20+ min) | 19 | $1,723 | $62 |
| Short return visit | 11 | $679 | $40 |
2017: 6 services
| Complicated repair of wound of trunk, 2.6-7.5 cm | 18 | $7,535 | $377 |
| New patient visit (30+ min) | 41 | $3,801 | $93 |
| Return visit (30+ min) | 14 | $1,823 | $101 |
| Short return visit (20+ min) | 22 | $1,798 | $69 |
| Complicated repair of wound of trunk, each additional 5.0 cm or less | 12 | $1,628 | $116 |
| Short return visit | 13 | $758 | $38 |
2016: 10 services
| Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm | 18 | $8,490 | $447 |
| Complicated repair of wound of scalp, arms, or legs, 2.6-7.5 cm | 20 | $8,019 | $401 |
| Complicated repair of wound of trunk, 2.6-7.5 cm | 12 | $3,479 | $268 |
| New patient visit (30+ min) | 31 | $2,849 | $92 |
| Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm | 16 | $2,294 | $121 |
| Short return visit (20+ min) | 21 | $1,819 | $67 |
| Return visit (30+ min) | 13 | $1,714 | $101 |
| Removal of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm | 13 | $1,616 | $124 |
| New patient visit (15+ min) | 16 | $1,131 | $71 |
| Short return visit | 14 | $1,003 | $42 |
2015: 5 services
| Complicated repair of wound of scalp, arms, or legs, 2.6-7.5 cm | 11 | $5,198 | $433 |
| Short return visit (20+ min) | 25 | $2,866 | $68 |
| New patient visit (30+ min) | 25 | $2,462 | $98 |
| New patient visit (15+ min) | 20 | $1,420 | $71 |
| Short return visit | 15 | $1,061 | $44 |
2014: 5 services
| Short return visit (20+ min) | 23 | $2,642 | $66 |
| Return visit (30+ min) | 16 | $2,302 | $100 |
| New patient visit (30+ min) | 20 | $1,906 | $95 |
| New patient visit (15+ min) | 16 | $1,044 | $65 |
| Short return visit | 20 | $913 | $38 |
Money from drug and device companies
$108 in 2024
| 2024 | 1 | 1 | None | $108 |
| 2021 | 1 | 1 | None | $57 |
| 2019 | 2 | 4 | None | $195 |
Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.
A payment is not proof that care is biased.
| AstraZeneca Pharmaceuticals LP | Calquence | $108 | 1 payment
|
See the published payment
| AstraZeneca Pharmaceuticals LP | Meals · 2024-05-22 | Calquence | $108 |
See earlier years (2021, 2019)
2021: $57
| Axogen | Avance Nerve Graft | $57 | 1 payment
|
2019: $195
| Sientra | Sientra High Strength Cohesive Silicone Gel Breast Implant | $161 | 1 payment
|
| Tepha | Galaflex | $34 | 1 payment
|
Professional record
- NPI
- 1417175258
- Licence
- CA A121316California A121316: Current · expires 2028-01-31
- Trained
- Tufts University School of Medicine, 2006
- Gender
- Male
More record details
- Sole proprietor
- Yes
- Taxonomy
- Federal specialty code 208200000X (208200000X)
- Mailing address
- 325 Distel Cir, Los Altos, CA, 94022
- NPI first listed
- 2007-04-24
- NPI last updated
- 2020-05-28
- NPI record certified
- 2020-05-28
This is when the NPI record was last certified, not a medical board exam.