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Nancy K. Mak, MD

Internal Medicine · Milpitas

NPI 1780761619

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
Not verified
Not the same as out of network.
Office
1

Offices

1 location

Plan participation

Not verified

We could not verify current plan participation for this doctor. This does not mean they are out of network. Call Dr. Mak’s office at (650) 945-2900 to ask if they take your plan before you enroll.

California Medical Board record

Licence G67454 · Current

Licensed to practise in California · since 1989 · expires 2027-11-30 · Dartmouth Medical School.

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

Medicaid work

$0 in 2019

Medicaid paid $0 for 12 billed services this clinician did in 2019, up to 12 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.

Largest Medicaid services in 2019
Short return visit (20+ min)12$0
Medicaid work by year
201912112$0

Drugs they prescribed that Part D paid

$561

Pharmacies billed $561 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 11) in 2024. Too few prescriptions to compare fairly with other clinicians.

0 generic and 11 brand-name prescriptions · $561 in drug cost.

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
Adacel Tdap11$561$51

Year by year

Part D prescribing by year
202411110% (0)100%$561
202252440% (0)None$1,574
20211,334274None7%$44,650
20203,9784784% (138)10%$170,754
20193,8794815% (174)10%$164,402
20183,7985245% (175)15%$159,922
20173,8314165% (179)16%$166,776
20163,9193826% (252)17%$180,589
20153,9084137% (255)17%$200,043
20143,8473986% (219)19%$184,975
20133,2283176% (189)17%$155,060

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

See the drugs prescribed each year

2022: 1 drug

Part D drugs prescribed in 2022
Adacel Tdap15$765$51

2021: 28 drugs

Part D drugs prescribed in 2021
Alvesco23$2,170$94
Atorvastatin101$1,555$15
Levothyroxine56$1,362$24
Pravastatin23$1,080$47
Atenolol125$1,049$8
Amlodipine Besylate83$1,025$12
Lisinopril73$972$13
Losartan57$869$15
Famotidine71$688$10
Glipizide49$575$12
Hydralazine12$522$43
Fenofibrate12$473$39
Metformin Hcl Er47$438$9
Gabapentin14$425$30
Alendronate40$416$10
Allopurinol16$390$24
Simvastatin34$387$11
Trazodone22$380$17
Lovastatin29$375$13
Fluticasone Propionate28$351$13
Metoprolol32$350$11
Veo Insulin15$332$22
Hydrochlorothiazide29$319$11
Carvedilol16$304$19
Metformin23$286$12
Tamsulosin14$276$20
Lisinopril-Hydrochlorothiazide17$205$12
Isosorbide Mononitrate Er11$199$18

2020: 67 drugs

Part D drugs prescribed in 2020
Pradaxa22$14,874$676
Combivent Respimat11$11,532$1,048
Spiriva Respimat26$9,888$380
Advair Diskus30$6,873$229
Advair Hfa14$6,204$443
Alvesco58$5,034$87
Levothyroxine175$4,927$28
Humulin N26$3,858$148
Atorvastatin226$3,631$16
Lisinopril237$3,025$13
Ventolin Hfa52$2,505$48
Losartan145$2,304$16
Amlodipine Besylate168$2,084$12
Hydrocodone-Acetaminophen111$2,078$19
Atenolol184$1,970$11
Pravastatin41$1,741$42
Dilt-Xr11$1,717$156
Gabapentin42$1,510$36
Fluticasone Propionate104$1,426$14
Omeprazole55$1,401$25
Glipizide119$1,362$11
Klor-Con M2023$1,311$57
Famotidine144$1,276$9
Hydralazine35$1,251$36
Lovastatin91$1,249$14
Fenofibrate30$1,173$39
Simvastatin95$1,092$11
Hydrochlorothiazide94$1,068$11
Metformin Hcl Er108$960$9
Metformin79$949$12
Alendronate85$884$10
Allopurinol36$884$25
Trazodone67$788$12
K-Tab Er23$754$33
Tamsulosin35$741$21
Metoprolol72$723$10
Lisinopril-Hydrochlorothiazide61$715$12
Ibuprofen36$622$17
Terazosin19$621$33
Atenolol-Chlorthalidone14$557$40
Veo Insulin28$553$20
Chlorthalidone11$551$50
Proair Hfa11$533$48
Isosorbide Mononitrate Er19$485$26
Clopidogrel19$452$24
Finasteride19$446$23
Fluoxetine31$442$14
Acetaminophen-Codeine17$433$25
Pantoprazole27$415$15
Oxybutynin Chloride Er12$401$33
Furosemide28$400$14
Triamcinolone Acetonide35$387$11
Albuterol Sulfate Hfa12$375$31
Clonidine19$361$19
Latanoprost17$358$21
Warfarin27$355$13
Nortriptyline13$316$24
Baclofen14$302$22
Carvedilol19$254$13
Hydrocortisone16$236$15
Meloxicam31$206$7
Ciprofloxacin23$197$9
Nitrofurantoin Mono-Macro12$190$16
Rizatriptan11$187$17
Rosuvastatin13$184$14
Montelukast12$133$11
Cephalexin12$129$11

2019: 70 drugs

Part D drugs prescribed in 2019
Pradaxa20$10,159$508
Spiriva Respimat22$8,080$367
Nexium11$6,205$564
Advair Diskus16$6,076$380
Atorvastatin208$4,928$24
Levothyroxine146$4,156$28
Alvesco39$3,888$100
Lisinopril240$3,029$13
Ventolin Hfa52$2,631$51
Colchicine15$2,443$163
Humulin N18$2,255$125
Gabapentin50$2,061$41
Losartan127$1,987$16
Atenolol154$1,944$13
Dilt-Xr12$1,795$150
Hydrocodone-Acetaminophen115$1,757$15
Glipizide146$1,702$12
Qvar18$1,669$93
Humulin R11$1,563$142
Klor-Con M2020$1,555$78
Omeprazole58$1,496$26
Amlodipine Besylate127$1,487$12
Lovastatin106$1,448$14
Pravastatin33$1,363$41
Fluticasone Propionate96$1,330$14
Simvastatin109$1,299$12
Hydrochlorothiazide105$1,171$11
Famotidine82$1,121$14
Fenofibrate30$1,112$37
Metformin87$1,044$12
Hydralazine26$986$38
Allopurinol28$944$34
Alendronate85$918$11
Metformin Hcl Er98$907$9
Atenolol-Chlorthalidone15$887$59
Acetaminophen-Codeine37$736$20
Trazodone62$733$12
K-Tab Er22$723$33
Ibuprofen48$715$15
Chlorthalidone12$710$59
Metoprolol72$695$10
Lisinopril-Hydrochlorothiazide62$660$11
Tamsulosin24$639$27
Terazosin20$638$32
Veo Insulin24$487$20
Furosemide32$427$13
Fluoxetine32$403$13
Triamcinolone Acetonide29$384$13
Clopidogrel16$377$24
Pantoprazole18$371$21
Hydrocortisone18$346$19
Finasteride14$331$24
Baclofen17$320$19
Warfarin24$301$13
Sertraline16$285$18
Nortriptyline21$265$13
Losartan-Hydrochlorothiazide19$264$14
Meloxicam38$259$7
Latanoprost15$249$17
Isosorbide Mononitrate Er16$243$15
Clonidine17$218$13
Pioglitazone12$213$18
Sulfamethoxazole-Trimethoprim13$205$16
Naproxen12$172$14
Carvedilol14$160$11
Ciprofloxacin20$152$8
Montelukast11$139$13
Amoxicillin11$89$8
Azithromycin11$82$7
Ondansetron12$70$6

2018: 68 drugs

Part D drugs prescribed in 2018
Combivent Respimat12$13,579$1,132
Advair Diskus27$10,699$396
Spiriva Respimat22$8,405$382
Pradaxa12$6,664$555
Nexium11$6,205$564
Atorvastatin197$5,353$27
Qvar54$5,096$94
Levothyroxine147$4,190$29
Colchicine19$3,699$195
Lisinopril245$3,090$13
Humulin N22$3,043$138
Losartan126$2,802$22
Ventolin Hfa59$2,634$45
Atenolol164$2,081$13
Glipizide137$2,020$15
Hydrocodone-Acetaminophen113$1,868$17
Gabapentin47$1,848$39
Omeprazole55$1,718$31
Klor-Con M2017$1,682$99
Fenofibrate27$1,567$58
Famotidine80$1,558$19
Hydralazine37$1,507$41
Simvastatin128$1,484$12
Fluticasone Propionate97$1,400$14
Pravastatin30$1,317$44
Lovastatin100$1,294$13
Amlodipine Besylate134$1,137$8
Humulin N Kwikpen12$1,132$94
Metformin Hcl Er92$1,102$12
Hydrochlorothiazide88$1,017$12
Atenolol-Chlorthalidone13$997$77
Allopurinol25$975$39
Metformin76$943$12
Alendronate73$924$13
Lisinopril-Hydrochlorothiazide73$905$12
Chlorthalidone12$830$69
K-Tab Er24$822$34
Metoprolol78$796$10
Terazosin31$758$24
Ibuprofen31$711$23
Triamcinolone Acetonide37$675$18
Nabumetone12$620$52
Acetaminophen-Codeine33$619$19
Nortriptyline28$566$20
Trazodone46$540$12
Isosorbide Mononitrate Er23$485$21
Losartan-Hydrochlorothiazide17$463$27
Baclofen19$409$22
Sertraline21$378$18
Ipratropium16$359$22
Furosemide25$332$13
Hydrocortisone23$332$14
Fluoxetine25$332$13
Montelukast19$332$17
Tamsulosin14$328$23
Veo Insulin18$323$18
Clopidogrel11$308$28
Pantoprazole15$273$18
Meloxicam35$246$7
Warfarin18$215$12
Pioglitazone11$206$19
Ciprofloxacin22$191$9
Azithromycin18$148$8
Ondansetron15$144$10
Sulfamethoxazole-Trimethoprim12$94$8
Clonazepam14$92$7
Terbinafine11$80$7
Zolpidem12$74$6

2017: 68 drugs

Part D drugs prescribed in 2017
Combivent Respimat13$12,601$969
Dulera28$8,779$314
Nexium12$6,769$564
Advair Diskus13$5,983$460
Atorvastatin199$5,811$29
Qvar59$5,106$87
Levothyroxine160$4,858$30
Spiriva Respimat11$4,799$436
Pradaxa11$4,432$403
Losartan114$3,464$30
Lisinopril280$3,359$12
Fenofibrate24$3,078$128
Ventolin Hfa62$2,866$46
Hydrocodone-Acetaminophen99$2,804$28
Colchicine15$2,633$176
Humulin N21$2,421$115
Atenolol189$2,328$12
Omeprazole65$2,225$34
Famotidine91$2,165$24
Gabapentin36$2,076$58
Simvastatin146$2,015$14
Glipizide115$1,856$16
Hydralazine39$1,843$47
Fluticasone Propionate101$1,504$15
Humulin R11$1,476$134
Ibuprofen50$1,368$27
Lovastatin108$1,354$13
Atenolol-Chlorthalidone16$1,315$82
Hydrochlorothiazide110$1,276$12
Pravastatin27$1,232$46
Metformin95$1,204$13
Allopurinol28$1,092$39
Verapamil Er16$1,037$65
Amlodipine Besylate119$1,034$9
Acetaminophen-Codeine51$1,007$20
Lisinopril-Hydrochlorothiazide79$989$13
Metformin Hcl Er80$963$12
Alendronate67$952$14
Triamcinolone Acetonide34$789$23
Nabumetone13$782$60
Metoprolol59$634$11
Nortriptyline27$599$22
Pantoprazole23$594$26
K-Tab Er18$563$31
Terazosin35$498$14
Gemfibrozil11$498$45
Losartan-Hydrochlorothiazide13$474$36
Isosorbide Mononitrate Er17$443$26
Clopidogrel15$427$28
Trazodone37$418$11
Furosemide25$385$15
Hydrocortisone23$334$15
Sulfamethoxazole-Trimethoprim18$317$18
Fluoxetine24$307$13
Ipratropium11$304$28
Naproxen23$269$12
Meloxicam36$261$7
Clonidine12$260$22
Sertraline16$259$16
Montelukast12$253$21
Insulin11$251$23
Ranitidine14$232$17
Warfarin18$216$12
Ciprofloxacin24$216$9
Ondansetron23$175$8
Azithromycin22$168$8
Clonazepam19$125$7
Zolpidem13$91$7

2016: 64 drugs

Part D drugs prescribed in 2016
Combivent Respimat16$13,015$813
Nexium12$6,648$554
Atorvastatin182$5,906$32
Hydrocodone-Acetaminophen154$5,416$35
Levothyroxine151$5,103$34
Qvar58$4,838$83
Fenofibrate36$4,495$125
Dulera22$4,225$192
Losartan120$4,097$34
Gabapentin40$3,601$90
Lisinopril255$3,080$12
Simvastatin151$3,027$20
Omeprazole59$2,648$45
Atenolol179$2,239$13
Colchicine17$2,213$130
Glipizide133$2,210$17
Amlodipine Besylate139$2,082$15
Acetaminophen-Codeine76$2,046$27
Hydralazine35$1,967$56
Humulin N21$1,821$87
Famotidine64$1,791$28
Ibuprofen55$1,710$31
Nabumetone20$1,706$85
Hydrochlorothiazide149$1,640$11
Fluticasone Propionate93$1,496$16
Lovastatin115$1,459$13
Pravastatin29$1,421$49
Verapamil Er20$1,385$69
Metformin109$1,367$13
Ventolin Hfa35$1,352$39
Humulin 70-3012$1,322$110
Proair Hfa34$1,290$38
Metformin Hcl Er82$1,129$14
Metoprolol88$989$11
Klor-Con M2016$989$62
Alendronate61$910$15
K-Tab Er19$876$46
Atenolol-Chlorthalidone14$868$62
Lisinopril-Hydrochlorothiazide69$842$12
Allopurinol17$707$42
Triamcinolone Acetonide25$628$25
Terazosin38$583$15
Isosorbide Mononitrate Er16$568$35
Nortriptyline28$566$20
Gemfibrozil11$508$46
Furosemide27$492$18
Warfarin32$440$14
Clopidogrel11$411$37
Naproxen29$399$14
Insulin18$394$22
Montelukast16$366$23
Bupropion Xl12$339$28
Trazodone25$322$13
Sertraline16$309$19
Fluoxetine23$302$13
Losartan-Hydrochlorothiazide11$297$27
Ciprofloxacin21$267$13
Clonidine12$251$21
Clonazepam31$211$7
Ondansetron20$202$10
Ranitidine14$201$14
Zolpidem25$178$7
Azithromycin17$155$9
Meloxicam16$124$8

2015: 66 drugs

Part D drugs prescribed in 2015
Nexium11$5,972$543
Dulera12$5,912$493
Hydrocodone-Acetaminophen137$5,370$39
Atorvastatin164$5,149$31
Levothyroxine143$5,033$35
Losartan121$4,151$34
Qvar49$3,853$79
Fenofibrate37$3,631$98
Gabapentin34$3,488$103
Lisinopril253$3,111$12
Simvastatin143$3,013$21
Omeprazole52$2,567$49
Amlodipine Besylate134$2,557$19
Humulin N31$2,508$81
Atenolol182$2,407$13
Fluticasone Propionate111$2,365$21
Glipizide129$2,186$17
Hydralazine34$2,118$62
Acetaminophen-Codeine76$2,086$27
Insulin31$2,073$67
Fentanyl12$1,746$146
Pravastatin26$1,734$67
Nabumetone25$1,647$66
Proair Hfa41$1,584$39
Hydrochlorothiazide136$1,512$11
Lovastatin119$1,486$12
Metformin112$1,373$12
Ibuprofen46$1,307$28
Verapamil Er19$1,288$68
Permethrin14$1,244$89
Colchicine14$1,193$85
Famotidine45$1,172$26
Etodolac16$1,094$68
Atenolol-Chlorthalidone17$1,044$61
Dilt-Xr11$1,039$94
Metformin Hcl Er69$984$14
Metoprolol82$918$11
Lisinopril-Hydrochlorothiazide74$899$12
K-Tab Er21$886$42
Alendronate57$849$15
Clopidogrel16$836$52
Bd Ultra-Fine Pen Needle11$795$72
Allopurinol18$753$42
Chlorthalidone11$668$61
Terazosin46$661$14
Furosemide37$659$18
Triamcinolone Acetonide26$652$25
Cyclobenzaprine24$557$23
Warfarin39$521$13
Trazodone39$499$13
Montelukast18$476$26
Nortriptyline18$416$23
Hydroxyzine12$394$33
Fluoxetine24$326$14
Ranitidine20$315$16
Losartan-Hydrochlorothiazide14$313$22
Hydrocortisone16$268$17
Naproxen17$246$14
Zolpidem30$211$7
Clonazepam29$207$7
Ciprofloxacin17$181$11
Temazepam15$150$10
Ondansetron12$146$12
Bisoprolol-Hydrochlorothiazide12$140$12
Sulfamethoxazole-Trimethoprim14$138$10
Meloxicam11$83$8

2014: 68 drugs

Part D drugs prescribed in 2014
Oxycontin11$8,606$782
Spiriva12$7,067$589
Zostavax30$5,550$185
Atorvastatin150$4,923$33
Dulera14$4,691$335
Losartan111$4,177$38
Levothyroxine141$3,438$24
Gabapentin33$3,198$97
Simvastatin149$3,161$21
Hydrocodone-Acetaminophen146$3,128$21
Lisinopril252$3,080$12
Qvar39$3,057$78
Amlodipine Besylate147$2,814$19
Fenofibrate27$2,812$104
Humulin N32$2,792$87
Atenolol202$2,596$13
Pravastatin35$2,488$71
Fluticasone Propionate87$2,303$26
Glipizide134$2,199$16
Omeprazole49$2,151$44
Proair Hfa53$2,113$40
Isosorbide Dinitrate13$2,000$154
Hydralazine39$1,753$45
Oxybutynin Chloride Er14$1,751$125
Oxycodone-Acetaminophen11$1,581$144
Hydrochlorothiazide131$1,527$12
Lovastatin114$1,433$13
Etodolac17$1,397$82
Adacel Tdap34$1,394$41
Ibuprofen66$1,393$21
K-Tab Er42$1,359$32
Nabumetone21$1,107$53
Metformin92$1,099$12
Lisinopril-Hydrochlorothiazide90$1,089$12
Insulin32$1,072$33
Verapamil Er19$1,050$55
Dilt-Xr11$1,023$93
Metoprolol83$938$11
Clopidogrel16$789$49
Metformin Hcl Er53$741$14
Lidocaine11$714$65
Triamcinolone Acetonide29$705$24
Famotidine33$674$20
Alendronate45$671$15
Acetaminophen-Codeine32$663$21
Oxybutynin Chloride15$658$44
Furosemide41$646$16
Trazodone42$573$14
Warfarin41$558$14
Terazosin36$555$15
Allopurinol18$535$30
Atenolol-Chlorthalidone18$461$26
Fluoxetine28$433$15
Nortriptyline16$351$22
Hydrocortisone19$282$15
Cyclobenzaprine18$282$16
Naproxen17$278$16
Prednisone12$256$21
Montelukast11$245$22
Ranitidine17$239$14
Clonazepam23$182$8
Ciprofloxacin19$178$9
Sulfamethoxazole-Trimethoprim22$172$8
Lorazepam16$155$10
Temazepam12$135$11
Zolpidem16$121$8
Azithromycin11$117$11
Alprazolam14$113$8

2013: 63 drugs

Part D drugs prescribed in 2013
Zostavax48$8,544$178
Colcrys15$4,738$316
Dulera16$4,579$286
Losartan90$3,832$43
Pravastatin58$3,764$65
Simvastatin140$3,475$25
Amlodipine Besylate136$2,999$22
Levothyroxine110$2,915$27
Atenolol214$2,815$13
Atorvastatin81$2,808$35
Lisinopril214$2,652$12
Omeprazole50$2,499$50
Hydrocodone-Acetaminophen129$2,342$18
Fenofibrate22$2,335$106
Gabapentin25$2,114$85
Hydralazine38$1,958$52
Fluticasone Propionate70$1,889$27
Qvar18$1,871$104
Felodipine Er11$1,732$157
Glipizide106$1,718$16
Oxybutynin Chloride Er11$1,605$146
Proair Hfa36$1,601$44
Humulin N20$1,462$73
Lovastatin108$1,355$13
Hydrochlorothiazide116$1,337$12
Etodolac22$1,318$60
Humulin R13$1,276$98
Metformin80$979$12
Clopidogrel13$944$73
K-Tab Er28$914$33
Famotidine44$912$21
Lisinopril-Hydrochlorothiazide70$864$12
Metoprolol75$820$11
Ibuprofen37$727$20
Triamcinolone Acetonide23$721$31
Verapamil Er16$658$41
Furosemide42$637$15
Insulin19$596$31
Naproxen32$572$18
Nabumetone12$570$48
Allopurinol14$552$39
Warfarin34$453$13
Alendronate29$445$15
Insulin13$437$34
Terazosin27$415$15
Pantoprazole13$399$31
Fluoxetine27$372$14
Trazodone25$358$14
Metformin Hcl Er27$349$13
Acetaminophen-Codeine12$294$25
Nortriptyline11$262$24
Atenolol-Chlorthalidone21$245$12
Ranitidine13$186$14
Temazepam13$180$14
Isosorbide Mononitrate Er12$160$13
Lorazepam16$154$10
Tramadol13$141$11
Amitriptyline11$135$12
Azithromycin12$126$10
Zolpidem14$121$9
Ciprofloxacin13$116$9
Sulfamethoxazole-Trimethoprim11$106$10
Alprazolam11$90$8

Professional record

NPI
1780761619
Licence
CA G67454California G67454: Current · expires 2027-11-30
More record details
Sole proprietor
No
Medicaid ID
CA 00G674540
Taxonomy
Internal medicine (207R00000X)
Mailing address
1800 Harrison St Fl 7, Oakland, CA, 94612
NPI first listed
2006-10-31
NPI last updated
2007-07-08

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