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Ellen Chieko De Coninck, MD

Dermatology · Los Altos

NPI 1114977865

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
14
2 carriers
Offices
4

Offices

4 locations · Sutter Bay Medical Foundation · 3,783 clinicians in this group

Looking this up.

Plans that list them

14 plans · 2 carriers

A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Coninck’s office to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.

14 of 14 plans

Plans whose provider directory lists this clinician
Alignment Health BreathEasy (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Clarity (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Harmony (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes CalPlus (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes Care (HMO C-SNP)Alignment Health PlanListedSep 28, 2026
Alignment Health Heart & Diabetes Choice (HMO C-SNP)Alignment Health PlanListedSep 28, 2026
Alignment Health Honor+ Plan (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health My Choice CalCare (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health Silicon (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Sutter Advantage +More (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health smartHMO (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health the ONE (HMO)Alignment Health PlanListedOct 3, 2026
DualConnect (HMO D-SNP)Santa Clara Family Health PlanListedSep 1, 2026

California Medical Board record

Licence A79762 · Current

Licensed to practise in California · since 2002 · expires 2027-11-30 · Stanford University School of Medicine.

No disciplinary actions, convictions, malpractice judgments or citations in this record.

Original Medicare doctor bills

$183,880

Medicare paid this office $183,880 for 604 people.

This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.

Largest Original Medicare bills
Short return visit (20+ min)457$50,242$72
Return visit (30+ min)224$32,186$102
Destruction of skin growth, 1-14 growths182$24,859$107
Destruction of precancer skin growth, 1 growth274$22,264$50
Biopsy of related skin growth, first growth136$13,761$85
See all 13 services
Every Original Medicare service billed
Short return visit (20+ min)457$50,242$72
Return visit (30+ min)224$32,186$102
Destruction of skin growth, 1-14 growths182$24,859$107
Destruction of precancer skin growth, 1 growth274$22,264$50
Biopsy of related skin growth, first growth136$13,761$85
Destruction of precancer skin growth, 2-14 growths201$8,813$7
Application of ultraviolet light to skin23$3,811$27
Punch biopsy, first skin growth20$2,543$127
Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm14$2,217$158
Short return visit33$1,851$53
Biopsy of related skin growth, each additional growth24$1,589$51
New patient visit (30+ min)18$1,402$78
Injection, triamcinolone acetonide, not otherwise specified, 10 mg11$16None

Procedures Medicare counted

Procedure volume Medicare published
Melanoma (skin cancer) excision1-10None
Removal of skin lesions1035More than 93% of doctors who do this
Removal or shaving of skin growth32More than 75% of doctors who do this
Skin biopsy195More than 85% of doctors who do this

Who their Medicare patients are

604 Original Medicare patients in 2024. Average age 76 · Under 65 2% · 85 and older 13% · Women 55% · Also on Medicaid 3% · Health risk score 0.86. At or below the middle of the specialty; the typical dermatology clinician is at 1.01.

Conditions among them: High blood pressure 57% · Diabetes 17% · Cancer 17% · Coronary heart disease 16% · Chronic kidney disease 16% · Atrial fibrillation 15% · Depression 11% · Heart failure 8% · COPD 6% · Dementia 4% · Stroke 3%.

The office billed $682,796, Medicare allowed $264,467 and paid $183,880; for 3,625 services of 50 kinds; $16 of it was for drugs given in the office and $183,863 for care.

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

Original Medicare by year
20246043,625760.86$682,796$183,880
20236033,738760.90$628,443$181,612
20225013,438760.85$563,392$167,649
20214373,423750.81$527,486$160,748
20204143,063750.93$444,258$125,567
20194552,769750.90$483,851$130,278
20184252,825740.91$464,515$128,691
20174152,706740.93$472,063$133,774
20164232,372740.87$425,151$118,275
20153762,167740.94$398,974$118,828
20144172,099750.87$400,619$117,912
20133341,721750.95$306,563$86,820

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: 12 services

Original Medicare services billed in 2023
Short return visit (20+ min)406$46,768$75
Return visit (30+ min)229$30,695$107
Destruction of skin growth, 1-14 growths170$23,284$107
Destruction of precancer skin growth, 1 growth269$22,373$51
Biopsy of related skin growth, first growth141$14,897$91
Destruction of precancer skin growth, 2-14 growths205$9,665$7
New patient visit (30+ min)41$3,465$85
Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm17$3,363$177
Punch biopsy, first skin growth26$3,160$113
Application of ultraviolet light to skin27$2,907$27
Short return visit24$1,137$47
Biopsy of related skin growth, each additional growth18$1,066$53

2022: 14 services

Original Medicare services billed in 2022
Short return visit (20+ min)356$40,399$73
Return visit (30+ min)175$25,650$107
Destruction of skin growth, 1-14 growths160$23,308$110
Destruction of precancer skin growth, 1 growth252$19,975$48
Biopsy of related skin growth, first growth119$13,504$87
Destruction of precancer skin growth, 2-14 growths192$9,076$7
Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm13$4,267$305
Punch biopsy, first skin growth27$3,451$128
Application of ultraviolet light to skin19$2,557$27
Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm11$2,123$177
New patient visit (45+ min)13$1,923$148
Short return visit35$1,896$51
Biopsy of related skin growth, each additional growth22$1,574$49
New patient visit (30+ min)18$1,283$71

2021: 13 services

Original Medicare services billed in 2021
Short return visit (20+ min)311$37,588$76
Return visit (30+ min)163$22,628$107
Destruction of skin growth, 1-14 growths136$19,721$112
Destruction of precancer skin growth, 1 growth217$17,944$49
Biopsy of related skin growth, first growth101$12,052$92
Destruction of precancer skin growth, 2-14 growths178$8,997$7
Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm18$7,826$313
Punch biopsy, first skin growth34$5,046$133
Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm16$2,715$129
Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm12$2,282$163
New patient visit (30+ min)27$2,278$84
Biopsy of related skin growth, each additional growth29$2,254$56
Short return visit31$1,378$42

2020: 14 services

Original Medicare services billed in 2020
Short return visit (20+ min)259$24,437$64
Return visit (30+ min)168$18,782$87
Destruction of skin growth, 1-14 growths128$17,736$103
Destruction of precancer skin growth, 1 growth205$15,072$47
Biopsy of related skin growth, first growth92$9,506$89
Destruction of precancer skin growth, 2-14 growths157$5,990$6
Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm14$4,248$283
Punch biopsy, first skin growth24$3,562$127
Destruction of precancer skin growth, 15 or more growths12$2,537$149
Application of ultraviolet light to skin11$1,610$21
Biopsy of related skin growth, each additional growth18$1,456$56
New patient visit (30+ min)18$1,137$63
Short return visit25$814$33
New patient visit (15+ min)15$413$28

2019: 12 services

Original Medicare services billed in 2019
Short return visit (20+ min)301$26,158$58
Destruction of skin growth, 1-14 growths140$18,806$100
Return visit (30+ min)160$18,164$90
Destruction of precancer skin growth, 1 growth190$15,269$46
Biopsy of related skin growth, first growth79$8,392$89
Destruction of precancer skin growth, 2-14 growths156$5,299$5
Punch biopsy, first skin growth23$3,021$121
Application of ultraviolet light to skin17$2,219$21
Short return visit46$1,807$34
New patient visit (30+ min)20$1,795$90
New patient visit (15+ min)28$1,475$53
Biopsy of related skin growth, each additional growth17$1,090$55

2018: 12 services

Original Medicare services billed in 2018
Short return visit (20+ min)302$27,782$59
Destruction of precancer skin growth, 1 growth206$16,736$46
Destruction of skin growth, 1-14 growths115$16,216$102
Return visit (30+ min)139$15,979$85
Biopsy of single growth of skin and/or tissue126$13,699$91
Destruction of precancer skin growth, 2-14 growths158$5,311$5
Application of ultraviolet light to skin18$3,454$21
New patient visit (30+ min)31$2,540$82
Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm14$2,511$157
New patient visit (15+ min)30$1,681$56
Short return visit31$1,449$37
Biopsy of each additional growth of skin and/or tissue17$800$31

2017: 13 services

Original Medicare services billed in 2017
Short return visit (20+ min)252$24,709$57
Destruction of skin growth, 1-14 growths159$20,781$99
Return visit (30+ min)177$20,714$87
Destruction of precancer skin growth, 1 growth187$14,126$45
Biopsy of single growth of skin and/or tissue124$13,138$89
Complicated repair of wound of scalp, arms, or legs, 2.6-7.5 cm11$4,983$415
Destruction of precancer skin growth, 2-14 growths144$4,683$5
New patient visit (30+ min)35$2,548$73
Application of ultraviolet light to skin21$2,417$21
Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm15$2,178$121
Short return visit41$1,615$34
Biopsy of each additional growth of skin and/or tissue28$1,250$30
New patient visit (15+ min)14$690$49

2016: 14 services

Original Medicare services billed in 2016
Short return visit (20+ min)279$25,240$56
Return visit (30+ min)147$17,138$87
Destruction of skin growth, 1-14 growths115$14,668$104
Destruction of precancer skin growth, 1 growth181$13,989$47
Biopsy of single growth of skin and/or tissue137$13,932$84
Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm20$6,516$296
Destruction of precancer skin growth, 2-14 growths134$4,283$5
New patient visit (30+ min)41$2,859$70
Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm14$1,800$120
New patient visit (15+ min)23$1,269$55
Biopsy of each additional growth of skin and/or tissue31$1,164$31
Short return visit27$1,064$37
Application of ultraviolet light to skin15$867$22
Injection, triamcinolone acetonide, not otherwise specified, 10 mg11$33None

2015: 12 services

Original Medicare services billed in 2015
Short return visit (20+ min)255$26,785$63
Destruction of precancer skin growth, 1 growth167$14,424$52
Biopsy of single growth of skin and/or tissue127$14,218$97
Destruction of skin growth, 1-14 growths89$12,705$110
Return visit (30+ min)104$11,027$90
Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm20$7,121$297
Destruction of precancer skin growth, 2-14 growths125$4,323$6
New patient visit (30+ min)44$3,578$81
Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.5 cm or less11$2,414$219
Short return visit28$1,395$40
New patient visit (15+ min)23$1,194$52
Biopsy of each additional growth of skin and/or tissue23$1,057$32

2014: 14 services

Original Medicare services billed in 2014
Short return visit (20+ min)279$23,234$56
Destruction of precancer skin growth, 1 growth161$14,542$55
Destruction of skin growth, 1-14 growths116$14,397$103
Biopsy of single growth of skin and/or tissue120$11,996$85
Return visit (30+ min)92$10,479$95
Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm21$6,352$276
Destruction of precancer skin growth, 2-14 growths120$5,980$10
New patient visit (30+ min)51$4,605$90
New patient visit (15+ min)54$3,039$56
Short return visit43$2,094$38
Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm12$1,622$125
Biopsy of each additional growth of skin and/or tissue24$993$30
Injection into skin growth, 1-7 growths11$657$44
Injection, triamcinolone acetonide, not otherwise specified, 10 mg14$33None

2013: 10 services

Original Medicare services billed in 2013
Short return visit (20+ min)226$20,953$60
Destruction of precancer skin growth, 1 growth130$13,572$65
Biopsy of single growth of skin and/or tissue105$10,750$94
Destruction of skin growth, 1-14 growths69$8,418$108
Return visit (30+ min)69$8,124$84
New patient visit (30+ min)48$4,430$92
Destruction of precancer skin growth, 2-14 growths103$3,962$6
New patient visit (15+ min)44$2,123$48
Short return visit31$1,215$37
Biopsy of each additional growth of skin and/or tissue28$1,097$30

Drugs they prescribed that Part D paid

$18,091

Pharmacies billed $18,091 in 2024.

This is pharmacy cost, not the office bill, and not what patients paid.

628 generic and 13 brand-name prescriptions · $18,091 in drug cost · 28 antibiotic prescriptions to 15 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.

Largest Part D drug costs
Fluocinonide64$2,341$37
Tacrolimus16$1,964$123
Ketoconazole87$1,846$21
Valacyclovir44$1,148$26
Clindamycin Phosphate26$829$32
See all 16 drugs
Every Part D drug this clinician prescribed
Fluocinonide64$2,341$37
Tacrolimus16$1,964$123
Ketoconazole87$1,846$21
Valacyclovir44$1,148$26
Clindamycin Phosphate26$829$32
Acyclovir13$669$51
Doxycycline Hyclate16$623$39
Betamethasone Diprop Augmented32$539$17
Metronidazole16$527$33
Triamcinolone Acetonide31$522$17
Nystatin25$378$15
Prednisone13$336$26
Ciclopirox19$285$15
Minoxidil35$283$8
Mupirocin38$255$7
Hydrocortisone44$191$4

Year by year

Part D prescribing by year
2024641238None2%$18,091
20236482440% (0)4%$80,483
20225771990% (0)4%$62,664
20214791670% (0)8%$56,850
20205181780% (0)7%$37,145
2019441177None7%$43,288
2018410181None7%$37,566
20174581790% (0)10%$35,929
20165021770% (0)16%$52,534
2015405169NoneNone$46,265
20144621670% (0)None$33,704
2013425150None28%$27,921

Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.

See the drugs prescribed each year

2023: 16 drugs

Part D drugs prescribed in 2023
Fluocinonide51$2,455$48
Ketoconazole78$2,295$29
Clindamycin Phosphate19$2,016$106
Calcipotriene17$1,921$113
Tacrolimus15$1,584$106
Metronidazole19$1,163$61
Fluorouracil16$1,121$70
Valacyclovir49$867$18
Betamethasone Diprop Augmented21$704$34
Clobetasol Propionate16$570$36
Mupirocin40$542$14
Nystatin23$445$19
Hydrocortisone50$398$8
Triamcinolone Acetonide43$271$6
Prednisone15$170$11
Minoxidil17$138$8

2022: 16 drugs

Part D drugs prescribed in 2022
Fluocinonide62$3,414$55
Ketoconazole72$2,744$38
Tacrolimus13$1,923$148
Clindamycin Phosphate16$891$56
Mupirocin51$862$17
Metronidazole15$694$46
Valacyclovir27$512$19
Hydrocortisone36$447$12
Betamethasone Diprop Augmented24$412$17
Nystop15$321$21
Nystatin15$309$21
Ciclopirox13$269$21
Triamcinolone Acetonide35$232$7
Cephalexin17$126$7
Famciclovir11$73$7
Prednisone15$69$5

2021: 15 drugs

Part D drugs prescribed in 2021
Dupixent11$35,536$3,231
Ketoconazole81$2,923$36
Fluocinonide49$2,365$48
Clindamycin Phosphate18$2,070$115
Azelaic Acid14$1,504$107
Metronidazole12$849$71
Valacyclovir21$627$30
Doxycycline Hyclate11$483$44
Nystatin11$453$41
Hydrocortisone29$400$14
Mupirocin21$374$18
Betamethasone Diprop Augmented15$341$23
Cephalexin14$116$8
Famciclovir11$113$10
Triamcinolone Acetonide27$88$3

2020: 13 drugs

Part D drugs prescribed in 2020
Betamethasone Diprop Augmented38$4,327$114
Fluocinonide73$3,572$49
Clindamycin Phosphate22$3,309$150
Ketoconazole51$1,814$36
Halobetasol Propionate11$1,208$110
Doxycycline Monohydrate15$1,055$70
Valacyclovir23$934$41
Betamethasone Dipropionate12$525$44
Nystatin14$374$27
Mupirocin26$328$13
Hydrocortisone30$244$8
Triamcinolone Acetonide19$183$10
Cephalexin12$52$4

2019: 10 drugs

Part D drugs prescribed in 2019
Fluocinonide70$3,667$52
Ketoconazole48$2,061$43
Clindamycin Phosphate12$747$62
Hydroxyzine12$456$38
Triamcinolone Acetonide26$441$17
Betamethasone Diprop Augmented25$439$18
Valacyclovir29$410$14
Mupirocin23$207$9
Nystatin11$151$14
Hydrocortisone24$135$6

2018: 9 drugs

Part D drugs prescribed in 2018
Ketoconazole53$2,558$48
Fluocinonide53$2,114$40
Betamethasone Diprop Augmented25$1,238$50
Clobetasol Propionate11$971$88
Valacyclovir21$290$14
Nystatin14$254$18
Triamcinolone Acetonide21$208$10
Mupirocin17$162$10
Hydrocortisone25$153$6

2017: 12 drugs

Part D drugs prescribed in 2017
Fluocinonide73$3,475$48
Ketoconazole55$3,036$55
Desonide12$1,048$87
Betamethasone Dipropionate11$640$58
Valacyclovir12$374$31
Doxycycline Hyclate14$368$26
Mupirocin36$340$9
Nystatin19$297$16
Nystop17$256$15
Triamcinolone Acetonide16$105$7
Cephalexin12$86$7
Hydrocortisone11$78$7

2016: 15 drugs

Part D drugs prescribed in 2016
Fluocinonide78$6,054$78
Econazole Nitrate21$3,141$150
Ketoconazole50$2,553$51
Clobetasol Propionate18$1,975$110
Clindamycin Phosphate20$1,798$90
Metronidazole14$1,682$120
Desonide15$1,664$111
Clobetasol Emollient12$1,434$119
Doxycycline Hyclate12$999$83
Nystop18$740$41
Valacyclovir14$345$25
Triamcinolone Acetonide20$287$14
Mupirocin34$282$8
Hydroxyzine16$273$17
Hydrocortisone11$72$7

2015: 14 drugs

Part D drugs prescribed in 2015
Econazole Nitrate45$11,024$245
Clobetasol Propionate22$4,395$200
Fluocinonide52$3,444$66
Desonide20$2,314$116
Clobetasol Emollient19$2,189$115
Metronidazole12$1,665$139
Clindamycin Phosphate17$1,626$96
Fluocinolone Acetonide11$1,514$138
Nystatin11$905$82
Nystop16$569$36
Ketoconazole28$341$12
Mupirocin21$222$11
Triamcinolone Acetonide14$121$9
Cephalexin15$83$6

2014: 11 drugs

Part D drugs prescribed in 2014
Desonide36$4,679$130
Econazole Nitrate55$4,119$75
Fluocinonide72$3,011$42
Clobetasol Propionate31$2,647$85
Nyamyc14$1,237$88
Nystop11$736$67
Valacyclovir20$381$19
Ketoconazole19$355$19
Mupirocin25$309$12
Cephalexin18$127$7
Triamcinolone Acetonide11$111$10

2013: 11 drugs

Part D drugs prescribed in 2013
Desonide39$3,487$89
Fluocinonide58$2,028$35
Clobetasol Propionate27$1,610$60
Econazole Nitrate52$1,456$28
Nyamyc11$1,128$103
Ciclopirox11$848$77
Methotrexate11$451$41
Valacyclovir14$420$30
Mupirocin23$403$18
Ketoconazole16$247$15
Cephalexin18$101$6

Money from drug and device companies

$195 in 2025

Industry payments by year
202568None$195
202458None$352

Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.

A payment is not proof that care is biased.

Payments by company
AmgenOtezla$57
2 payments
  • Meals for Otezla · 2025-08-27 · $33
  • Meals for Otezla · 2025-04-30 · $25
GenzymeDupixent$41
1 payment
  • Meals for Dupixent · 2025-05-20 · $41
Arcutis BiotherapeuticsZoryve$35
2 payments
  • Meals for Zoryve · 2025-10-16 · $16
  • Meals for Zoryve · 2025-08-27 · $19
OrganonVtama$26
1 payment
  • Meals for Vtama · 2025-07-22 · $26
Galderma Laboratories L.P.Nemluvio$18
1 payment
  • Meals for Nemluvio · 2025-12-11 · $18
Lilly USATaltz$17
1 payment
  • Meals for Taltz · 2025-01-29 · $17
See all 8 published payments
Every published payment
Galderma Laboratories L.P.Meals · 2025-12-11Nemluvio$18
Arcutis BiotherapeuticsMeals · 2025-10-16Zoryve$16
AmgenMeals · 2025-08-27Otezla$33
Arcutis BiotherapeuticsMeals · 2025-08-27Zoryve$19
OrganonMeals · 2025-07-22Vtama$26
GenzymeMeals · 2025-05-20Dupixent$41
AmgenMeals · 2025-04-30Otezla$25
Lilly USAMeals · 2025-01-29Taltz$17
See earlier years (2024)

2024: $352

Payments by company in 2024
GenzymeDupixent$155
4 payments
  • Meals for Dupixent · 2024-11-26 · $40
  • Meals for Dupixent · 2024-10-31 · $42
  • Meals for Dupixent · 2024-10-09 · $42
  • Meals for Dupixent · 2024-08-27 · $32
Regeneron Healthcare SolutionsNone$125
1 payment
  • Meals · 2024-05-30 · $125
Galderma Laboratories L.P.None$25
1 payment
  • Meals · 2024-10-08 · $25
Dermavant SciencesVtama$24
1 payment
  • Meals for Vtama · 2024-08-13 · $24
Arcutis BiotherapeuticsZoryve$23
1 payment
  • Meals for Zoryve · 2024-09-26 · $23

Professional record

NPI
1114977865
Licence
CA A79762California A79762: Current · expires 2027-11-30
Trained
Stanford University School of Medicine, 2001
Video visits
Lists video visits
Gender
Female
More record details
Sole proprietor
No
Taxonomy
Federal specialty code 207N00000X (207N00000X)
Mailing address
2350 W El Camino Real, 2nd Floor, Mountain View, CA, 94040
NPI first listed
2006-05-12
NPI last updated
2011-11-30

This is when the NPI record was last certified, not a medical board exam.