Byron Andrew Knowles, MD
Dermatology · Modesto
- Medicare standing
- Clear
- Enrolled, allowed to bill and order, not excluded
- Plans that list them
- 15
- 3 carriers
- Offices
- 2
Offices
2 locations · Sutter Valley Medical Foundation · 2,473 clinicians in this group
Plans that list them
15 plans · 3 carriers
A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Knowles’s office at (209) 524-1211 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.
15 of 15 plans
| Alignment Health BreathEasy (HMO C-SNP) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health Clarity (HMO C-SNP) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health Harmony (HMO) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health Heart & Diabetes (HMO C-SNP) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health Heart & Diabetes CalPlus (HMO C-SNP) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health Heart & Diabetes Care (HMO C-SNP) | Alignment Health Plan | Listed | Sep 28, 2026 |
| Alignment Health Heart & Diabetes Choice (HMO C-SNP) | Alignment Health Plan | Listed | Sep 28, 2026 |
| Alignment Health Honor+ Plan (HMO) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health My Choice CalCare (HMO) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health Silicon (HMO C-SNP) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health smartHMO (HMO) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health the ONE (HMO) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Anthem Full Dual Advantage Aligned (HMO D-SNP) | Anthem Blue Cross | Listed | Oct 3, 2026 |
| Anthem Medicare Advantage (HMO-POS) | Anthem Blue Cross | Listed | Oct 3, 2026 |
| Anthem Prime (HMO-POS) | Anthem Blue Cross Partnership Plan | Listed | Oct 3, 2026 |
California Medical Board record
Licence A152031 · Current
Licensed to practise in California · since 2017 · expires 2027-10-31 · Vanderbilt University School of Medicine.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
Original Medicare doctor bills
$170,272
Medicare paid this office $170,272 for 625 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Short return visit (20+ min) | 470 | $45,670 | $66 |
| Destruction of skin growth, 1-14 growths | 261 | $27,543 | $82 |
| Destruction of precancer skin growth, 1 growth | 322 | $16,735 | $38 |
| Return visit (30+ min) | 156 | $13,592 | $70 |
| New patient visit (30+ min) | 158 | $12,171 | $77 |
See all 17 services
| Short return visit (20+ min) | 470 | $45,670 | $66 |
| Destruction of skin growth, 1-14 growths | 261 | $27,543 | $82 |
| Destruction of precancer skin growth, 1 growth | 322 | $16,735 | $38 |
| Return visit (30+ min) | 156 | $13,592 | $70 |
| New patient visit (30+ min) | 158 | $12,171 | $77 |
| Destruction of precancer skin growth, 2-14 growths | 245 | $8,494 | $5 |
| Destruction of precancer skin growth, 15 or more growths | 38 | $7,160 | $130 |
| Shaving of skin growth of body, arms, or legs, 0.6-1.0 cm | 49 | $5,369 | $89 |
| Shaving of skin growth of face, ears, eyelids, nose, lips, or mouth, 0.6-1.0 cm | 30 | $3,317 | $95 |
| Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm | 11 | $2,826 | $235 |
| Shaving of skin growth of body, arms, or legs, 1.1-2.0 cm | 23 | $2,464 | $103 |
| Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm | 11 | $1,959 | $115 |
| Biopsy of related skin growth, first growth | 33 | $1,932 | $57 |
| Shaving of skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm | 11 | $1,269 | $115 |
| Destruction of skin growth, 15 or more growths | 11 | $1,059 | $88 |
| Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's | 70 | $1,009 | $13 |
| Shaving of skin growth of face, ears, eyelids, nose, lips, or mouth, 0.5 cm or less | 13 | $977 | $75 |
Procedures Medicare counted
| Melanoma (skin cancer) excision | 1-10 | None |
| Removal of nail tissue | 1-10 | None |
| Removal of skin lesions | 1267 | More than 95% of doctors who do this |
| Removal or shaving of skin growth | 129 | More than 87% of doctors who do this |
| Skin biopsy | 19 | More than 63% of doctors who do this |
Who their Medicare patients are
625 Original Medicare patients in 2024. Average age 74 · Under 65 7% · 85 and older 12% · Women 58% · Also on Medicaid 15% · Health risk score 1.25. Above the middle of the specialty; the typical dermatology clinician is at 1.01.
Conditions among them: High blood pressure 74% · Chronic kidney disease 29% · Diabetes 27% · Coronary heart disease 20% · Atrial fibrillation 18% · Depression 18% · Cancer 17% · COPD 13% · Heart failure 12% · Stroke 5% · Dementia 4%.
The office billed $859,573, Medicare allowed $239,113 and paid $170,272; for 4,397 services of 53 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 | 625 | 4,397 | 74 | 1.25 | $859,573 | $170,272 |
| 2023 | 518 | 3,036 | 74 | 1.08 | $642,585 | $140,733 |
| 2022 | 500 | 3,486 | 73 | 1.07 | $747,735 | $161,037 |
| 2021 | 304 | 1,669 | 74 | 1.01 | $332,726 | $88,966 |
| 2020 | 30 | 55 | 72 | 1.10 | $9,618 | $4,899 |
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: 11 services
| Return visit (30+ min) | 216 | $30,981 | $88 |
| Short return visit (20+ min) | 272 | $25,186 | $66 |
| Destruction of skin growth, 1-14 growths | 219 | $23,990 | $90 |
| Destruction of precancer skin growth, 1 growth | 261 | $14,419 | $40 |
| New patient visit (30+ min) | 141 | $11,303 | $80 |
| Destruction of precancer skin growth, 2-14 growths | 200 | $6,441 | $5 |
| Destruction of precancer skin growth, 15 or more growths | 27 | $5,251 | $135 |
| Shaving of skin growth of face, ears, eyelids, nose, lips, or mouth, 0.6-1.0 cm | 28 | $3,332 | $111 |
| Shaving of skin growth of body, arms, or legs, 0.6-1.0 cm | 31 | $2,983 | $93 |
| Biopsy of related skin growth, first growth | 28 | $2,046 | $73 |
| Shaving of skin growth of body, arms, or legs, 1.1-2.0 cm | 16 | $1,859 | $98 |
2022: 17 services
| Return visit (30+ min) | 216 | $30,697 | $84 |
| Destruction of skin growth, 1-14 growths | 216 | $24,259 | $84 |
| Short return visit (20+ min) | 244 | $24,082 | $67 |
| Destruction of precancer skin growth, 1 growth | 268 | $13,640 | $37 |
| New patient visit (30+ min) | 159 | $12,271 | $77 |
| Destruction of precancer skin growth, 15 or more growths | 57 | $11,137 | $134 |
| Destruction of precancer skin growth, 2-14 growths | 208 | $7,609 | $5 |
| Shaving of skin growth of body, arms, or legs, 1.1-2.0 cm | 42 | $4,738 | $99 |
| Shaving of skin growth of face, ears, eyelids, nose, lips, or mouth, 0.6-1.0 cm | 37 | $4,592 | $102 |
| Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm | 15 | $3,774 | $252 |
| New patient visit (45+ min) | 30 | $3,312 | $110 |
| Shaving of skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm | 20 | $2,496 | $119 |
| Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm | 13 | $2,110 | $117 |
| Shaving of skin growth of body, arms, or legs, 0.6-1.0 cm | 18 | $1,794 | $78 |
| Biopsy of related skin growth, first growth | 23 | $1,423 | $62 |
| Injection into skin growth, 1-7 growths | 11 | $550 | $37 |
| Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 11 | $30 | None |
2021: 13 services
| Return visit (30+ min) | 201 | $27,791 | $101 |
| Destruction of skin growth, 1-14 growths | 107 | $11,993 | $94 |
| New patient visit (45+ min) | 60 | $8,239 | $137 |
| Destruction of precancer skin growth, 15 or more growths | 43 | $7,475 | $141 |
| Destruction of precancer skin growth, 1 growth | 126 | $6,057 | $42 |
| Destruction of precancer skin growth, 2-14 growths | 108 | $4,158 | $6 |
| New patient visit (30+ min) | 47 | $3,872 | $82 |
| Long return visit (40+ min) | 15 | $2,682 | $141 |
| Shaving of skin growth of body, arms, or legs, 1.1-2.0 cm | 19 | $2,495 | $108 |
| Short return visit (20+ min) | 25 | $2,221 | $79 |
| Shaving of skin growth of face, ears, eyelids, nose, lips, or mouth, 0.6-1.0 cm | 19 | $2,218 | $101 |
| Biopsy of related skin growth, first growth | 16 | $1,350 | $79 |
| Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 11 | $32 | None |
2020: 1 service
| Return visit (30+ min) | 21 | $2,558 | $102 |
Medicaid work
$1,088 in 2024
Medicaid paid $1,088 for 26 billed services this clinician did in 2024, 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.
| Short return visit (20+ min) | 26 | $1,088 |
| 2024 | 26 | 1 | 13 | $1,088 |
| 2021 | 219 | 5 | 35 | $4,544 |
| 2020 | 47 | 2 | 19 | $7,796 |
See the largest Medicaid services in earlier years
2021
| Clinic visit/encounter, all-inclusive | 14 | $4,198 |
| Return visit (30+ min) | 154 | $346 |
| Short return visit (20+ min) | 15 | $0 |
| Eligible clinician attests to documenting in the medical record they obtained, updated, or reviewed the patient's current medications | 24 | $0 |
| Service | 12 | $0 |
2020
| Clinic visit/encounter, all-inclusive | 28 | $7,796 |
| Return visit (30+ min) | 19 | $0 |
Drugs they prescribed that Part D paid
$944,257
Pharmacies billed $944,257 in 2024.
This is pharmacy cost, not the office bill, and not what patients paid.
Opioids were 0% of their Part D prescriptions (0 of 1,391) in 2024. At or below the middle of the specialty; the typical dermatology clinician is at 0%.
1,282 generic and 109 brand-name prescriptions · $944,257 in drug cost · 74 antibiotic prescriptions to 30 people.
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.
| Skyrizi | 13 | $244,466 | $18,805 |
| Tremfya | 11 | $144,258 | $13,114 |
| Cosentyx Unoready | 11 | $120,409 | $10,946 |
| Clobetasol Propionate | 114 | $5,488 | $48 |
| Ciclopirox | 141 | $5,103 | $36 |
See all 23 drugs
| Skyrizi | 13 | $244,466 | $18,805 |
| Tremfya | 11 | $144,258 | $13,114 |
| Cosentyx Unoready | 11 | $120,409 | $10,946 |
| Clobetasol Propionate | 114 | $5,488 | $48 |
| Ciclopirox | 141 | $5,103 | $36 |
| Fluorouracil | 57 | $4,952 | $87 |
| Tacrolimus | 27 | $4,529 | $168 |
| Triamcinolone Acetonide | 230 | $3,233 | $14 |
| Ketoconazole | 146 | $2,514 | $17 |
| Metronidazole | 46 | $2,079 | $45 |
| Tretinoin | 30 | $2,072 | $69 |
| Sulfacetamide | 15 | $1,818 | $121 |
| Doxycycline Monohydrate | 62 | $1,359 | $22 |
| Ciclopirox | 65 | $1,216 | $19 |
| Betamethasone Diprop Augmented | 24 | $1,071 | $45 |
| Terbinafine | 37 | $930 | $25 |
| Permethrin | 16 | $740 | $46 |
| Hydrocortisone | 100 | $685 | $7 |
| Mupirocin | 32 | $320 | $10 |
| Gabapentin | 27 | $151 | $6 |
| Spironolactone | 12 | $145 | $12 |
| Doxycycline Hyclate | 12 | $94 | $8 |
| Methotrexate | 16 | $61 | $4 |
Year by year
| 2024 | 1,391 | 437 | 0% (0) | 8% | $944,257 |
| 2023 | 1,320 | 389 | 0% (0) | 5% | $428,831 |
| 2022 | 1,164 | 390 | 0% (0) | 6% | $364,644 |
| 2021 | 1,010 | 254 | 0% (0) | 7% | $126,880 |
| 2020 | 284 | 71 | 0% (0) | 10% | $13,026 |
| 2019 | 20 | 11 | 0% (0) | None | $1,883 |
| 2018 | 41 | None | 0% (0) | 27% | $10,279 |
Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.
See the drugs prescribed each year
2023: 19 drugs
| Clobetasol Propionate | 92 | $6,626 | $72 |
| Ciclopirox | 126 | $5,907 | $47 |
| Fluorouracil | 56 | $5,444 | $97 |
| Ketoconazole | 156 | $3,943 | $25 |
| Triamcinolone Acetonide | 202 | $3,614 | $18 |
| Permethrin | 34 | $2,372 | $70 |
| Ciclopirox | 68 | $2,321 | $34 |
| Tretinoin | 18 | $1,874 | $104 |
| Betamethasone Diprop Augmented | 34 | $1,700 | $50 |
| Metronidazole | 20 | $1,587 | $79 |
| Doxycycline Monohydrate | 59 | $1,558 | $26 |
| Betamethasone Dipropionate | 11 | $1,209 | $110 |
| Hydrocortisone | 121 | $1,041 | $9 |
| Hydroxychloroquine Sulfate | 25 | $1,000 | $40 |
| Ivermectin | 12 | $717 | $60 |
| Spironolactone | 15 | $559 | $37 |
| Valacyclovir | 16 | $453 | $28 |
| Mupirocin | 48 | $434 | $9 |
| Gabapentin | 21 | $120 | $6 |
2022: 21 drugs
| Humira(Cf) | 12 | $124,611 | $10,384 |
| Fluorouracil | 65 | $7,794 | $120 |
| Ciclopirox | 90 | $4,321 | $48 |
| Clobetasol Propionate | 54 | $4,038 | $75 |
| Ketoconazole | 125 | $3,703 | $30 |
| Betamethasone Diprop Augmented | 35 | $3,552 | $101 |
| Triamcinolone Acetonide | 191 | $3,110 | $16 |
| Ciclopirox | 83 | $2,825 | $34 |
| Metronidazole | 32 | $2,024 | $63 |
| Permethrin | 23 | $1,850 | $80 |
| Tretinoin | 18 | $1,731 | $96 |
| Sulfacetamide | 15 | $1,569 | $105 |
| Tacrolimus | 11 | $1,319 | $120 |
| Doxycycline Monohydrate | 58 | $1,175 | $20 |
| Hydroxychloroquine Sulfate | 25 | $1,015 | $41 |
| Hydrocortisone | 89 | $746 | $8 |
| Fluocinonide | 13 | $715 | $55 |
| Mupirocin | 38 | $531 | $14 |
| Spironolactone | 20 | $518 | $26 |
| Valacyclovir | 15 | $375 | $25 |
| Gabapentin | 30 | $253 | $8 |
2021: 22 drugs
| Clobetasol Propionate | 61 | $8,497 | $139 |
| Fluorouracil | 48 | $6,186 | $129 |
| Betamethasone Diprop Augmented | 42 | $4,194 | $100 |
| Triamcinolone Acetonide | 184 | $3,500 | $19 |
| Fluocinonide | 44 | $2,814 | $64 |
| Ciclopirox | 54 | $2,805 | $52 |
| Ketoconazole | 111 | $2,701 | $24 |
| Tacrolimus | 11 | $2,250 | $205 |
| Halobetasol Propionate | 12 | $1,740 | $145 |
| Desonide | 11 | $1,555 | $141 |
| Methotrexate | 39 | $1,501 | $38 |
| Betamethasone Dipropionate | 18 | $1,386 | $77 |
| Metronidazole | 13 | $986 | $76 |
| Permethrin | 15 | $979 | $65 |
| Ciclopirox | 36 | $751 | $21 |
| Hydrocortisone | 69 | $528 | $8 |
| Doxycycline Monohydrate | 16 | $460 | $29 |
| Gabapentin | 77 | $401 | $5 |
| Valacyclovir | 11 | $253 | $23 |
| Mupirocin | 28 | $226 | $8 |
| Terbinafine | 11 | $122 | $11 |
| Hydroxyzine | 13 | $59 | $5 |
2020: 7 drugs
| Triamcinolone Acetonide | 63 | $1,392 | $22 |
| Betamethasone Diprop Augmented | 15 | $1,129 | $75 |
| Fluocinonide | 15 | $1,012 | $67 |
| Ketoconazole | 17 | $311 | $18 |
| Betamethasone Valerate | 12 | $296 | $25 |
| Hydrocortisone | 22 | $132 | $6 |
| Gabapentin | 23 | $118 | $5 |
2018: 1 drug
| Betamethasone Dipropionate | 12 | $653 | $54 |
Money from drug and device companies
$949 in 2025
| 2025 | 11 | 32 | None | $949 |
| 2024 | 9 | 28 | None | $886 |
| 2023 | 3 | 4 | None | $123 |
| 2021 | 3 | 4 | None | $104 |
| 2020 | 1 | 1 | None | $26 |
| 2019 | 1 | 1 | None | $97 |
Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.
A payment is not proof that care is biased.
| Janssen Biotech | Tremfya | $266 | 8 payments
|
| Ucb | Bimzelx | $133 | 3 payments
|
| Regeneron Healthcare Solutions | Dupixent | $122 | 4 payments
|
| Abbvie | Skyrizi | $98 | 4 payments
|
| Lilly USA | Taltz | $80 | 3 payments
|
| Incyte | Opzelura | $68 | 3 payments
|
See all 32 published payments
| Novartis Pharmaceuticals | Meals · 2025-11-19 | Cosentyx | $18 |
| Abbvie | Meals · 2025-11-19 | Skyrizi | $29 |
| LEO Pharma | Meals · 2025-11-12 | Anzupgo | $30 |
| Novartis Pharmaceuticals | Meals · 2025-11-05 | Rhapsido | $34 |
| Abbvie | Meals · 2025-10-22 | Skyrizi | $24 |
| LEO Pharma | Meals · 2025-10-01 | Anzupgo | $27 |
| Janssen Biotech | Meals · 2025-09-24 | Tremfya | $31 |
| Regeneron Healthcare Solutions | Meals · 2025-09-18 | Dupixent | $35 |
| Janssen Biotech | Meals · 2025-08-27 | Tremfya | $24 |
| Lilly USA | Meals · 2025-08-20 | Taltz | $26 |
| Incyte | Meals · 2025-08-07 | Opzelura | $25 |
| Lilly USA | Meals · 2025-07-23 | Taltz | $29 |
| Janssen Biotech | Meals · 2025-07-16 | Tremfya | $42 |
| Abbvie | Meals · 2025-07-09 | Rinvoq | $18 |
| Regeneron Healthcare Solutions | Meals · 2025-06-13 | Dupixent | $16 |
| Lilly USA | Meals · 2025-06-04 | Taltz | $25 |
| Pfizer | Education · 2025-05-30 | Cibinqo | $15 |
| Janssen Biotech | Meals · 2025-05-28 | Tremfya | $43 |
| Incyte | Meals · 2025-05-22 | Opzelura | $28 |
| Abbvie | Meals · 2025-05-07 | Skyrizi | $27 |
| Janssen Biotech | Meals · 2025-04-23 | Tremfya | $29 |
| Regeneron Healthcare Solutions | Meals · 2025-04-17 | Dupixent | $35 |
| Ucb | Meals · 2025-04-03 | Bimzelx | $47 |
| Incyte | Meals · 2025-04-03 | Opzelura | $15 |
| Janssen Biotech | Meals · 2025-03-12 | Tremfya | $28 |
| Ucb | Meals · 2025-02-27 | Bimzelx | $44 |
| Janssen Biotech | Meals · 2025-02-19 | Tremfya | $42 |
| Regeneron Healthcare Solutions | Meals · 2025-02-06 | Dupixent | $36 |
| Janssen Biotech | Meals · 2025-01-29 | Tremfya | $27 |
| Arcutis Biotherapeutics | Meals · 2025-01-22 | Zoryve | $23 |
| Ucb | Meals · 2025-01-16 | Bimzelx | $42 |
| Amgen | Meals · 2025-01-08 | Otezla | $33 |
See earlier years (2024, 2023, 2021, 2020, 2019)
2024: $886
| Lilly USA | Taltz | $301 | 10 payments
|
| Janssen Biotech | Tremfya | $176 | 5 payments
|
| Novartis Pharmaceuticals | Cosentyx | $96 | 3 payments
|
| LEO Pharma | Adbry | $88 | 3 payments
|
| Genzyme | Dupixent | $76 | 2 payments
|
| Incyte | Opzelura | $48 | 2 payments
|
| Ucb | Bimzelx | $44 | 1 payment
|
| Regeneron Healthcare Solutions | Dupixent | $34 | 1 payment
|
| Arcutis Biotherapeutics | Zoryve | $24 | 1 payment
|
2023: $123
| Janssen Biotech | Tremfya | $60 | 2 payments
|
| Regeneron Healthcare Solutions | Dupixent | $39 | 1 payment
|
| Incyte | Opzelura | $24 | 1 payment
|
2021: $104
| AbbVie | Skyrizi | $50 | 2 payments
|
| Janssen Biotech | Tremfya | $31 | 1 payment
|
| Amgen | Otezla | $23 | 1 payment
|
2020: $26
| AbbVie | Skyrizi | $26 | 1 payment
|
2019: $97
| Allergan | None | $97 | 1 payment
|
Professional record
- NPI
- 1225586662
- Licence
- CA A152031California A152031: Current · expires 2027-10-31
- Trained
- Vanderbilt University School of Medicine, 2016
- Video visits
- Lists video visits
- Gender
- Male
More record details
- Sole proprietor
- Yes
- Taxonomy
- Federal specialty code 207N00000X (207N00000X); Student in a training program (390200000X)
- Mailing address
- Po Box 255228, Sacramento, CA, 95865
- NPI first listed
- 2016-09-14
- NPI last updated
- 2021-06-28
- NPI record certified
- 2021-06-28
This is when the NPI record was last certified, not a medical board exam.
Extra NPI addresses: 991 Montague Expy Ste 104, Milpitas, CA, 95035 · 751 S. Bascom Ave, San Jose, CA, 95128