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Kenneth Tack-Ken Leong, DO, MPH

Student in An Organized Health Care Education/Training Program · Santa Clara

NPI 1164788725

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. Leong’s office at (408) 851-1000 to ask if they take your plan before you enroll.

Medicaid work

$0 in 2021

Medicaid paid $0 for 12 billed services this clinician did in 2021, 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 2021
Short return visit (20+ min)12$0
Medicaid work by year
202112112$0

Drugs they prescribed that Part D paid

$54,732

Pharmacies billed $54,732 in 2024.

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

Opioids were 1% of their Part D prescriptions (17 of 1,499) in 2024. Above the middle of the specialty; the typical internal medicine clinician is at 1%.

1,305 generic and fewer than 11 brand-name prescriptions · $54,732 in drug cost · 403 antibiotic prescriptions to 395 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
Breyna67$10,121$151
Fluticasone Propionate162$2,834$17
Cefadroxil113$1,236$11
Atorvastatin54$809$15
Azelastine41$693$17
See all 25 drugs
Every Part D drug this clinician prescribed
Breyna67$10,121$151
Fluticasone Propionate162$2,834$17
Cefadroxil113$1,236$11
Atorvastatin54$809$15
Azelastine41$693$17
Amoxicillin-Clavulanate Potass57$672$12
Ipratropium29$615$21
Amlodipine Besylate52$608$12
Doxycycline Monohydrate56$518$9
Tamsulosin28$498$18
Sulfamethoxazole-Trimethoprim77$444$6
Lisinopril29$425$15
Losartan28$336$12
Lidocaine Hcl Viscous13$290$22
Albuterol Sulfate Hfa16$260$16
Levothyroxine17$253$15
Azithromycin37$240$6
Omeprazole18$212$12
Metformin Hcl Er21$202$10
Allopurinol12$202$17
Simvastatin17$186$11
Ciprofloxacin21$180$9
Ofloxacin12$169$14
Nitrofurantoin Mono-Macro17$167$10
Paxlovid117$0$0

Year by year

Part D prescribing by year
20241,4999681% (17)None$54,732
20232,3545901% (24)8%$209,371
20222,4994322% (46)9%$468,921
20212,2292831% (31)8%$409,223
20202,0752212% (44)13%$774,313
20192,3102873% (71)17%$1,229,064
20182,1852742% (44)28%$1,018,664
20171,8392563% (46)29%$657,530
20168311792% (19)None$166,288
201520246None38%$71,815
201411553NoneNone$12,187
20132314NoneNone$756

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

See the drugs prescribed each year

2023: 55 drugs

Part D drugs prescribed in 2023
Symbicort37$16,319$441
Jardiance18$15,585$866
Wixela Inhub23$4,365$190
Pradaxa11$3,224$293
Atorvastatin199$3,100$16
Alvesco19$2,476$130
Fluticasone Propionate125$1,687$13
Terazosin22$1,592$72
Amlodipine Besylate131$1,587$12
Paxlovid (Eua)90$1,517$17
Tamsulosin76$1,379$18
Losartan93$1,364$15
Flunisolide17$1,140$67
Acyclovir25$937$37
Lisinopril73$857$12
Levothyroxine37$745$20
Propranolol12$656$55
Ipratropium19$616$32
Allopurinol41$600$15
Valacyclovir16$585$37
Finasteride36$555$15
Cefadroxil49$545$11
Azelastine32$540$17
Gabapentin16$524$33
Nabumetone11$492$45
Metformin Hcl Er51$475$9
Simvastatin40$453$11
Metoprolol25$444$18
Omeprazole36$370$10
Olopatadine17$359$21
Amoxicillin29$350$12
Glipizide24$318$13
Chlorthalidone19$304$16
Rosuvastatin20$291$15
Atenolol24$287$12
Hydrochlorothiazide23$285$12
Hydralazine11$285$26
Pravastatin11$280$25
Hydrocodone-Acetaminophen15$279$19
Alendronate26$268$10
Sertraline16$256$16
Metformin17$245$14
Lovastatin21$245$12
Triamcinolone Acetonide15$238$16
Trazodone25$233$9
Veo Insulin11$218$20
Doxycycline Monohydrate19$190$10
Meloxicam23$158$7
Lisinopril-Hydrochlorothiazide14$157$11
Metoprolol15$155$10
Sulfamethoxazole-Trimethoprim27$154$6
Ibandronate11$131$12
Montelukast12$127$11
Zolpidem20$124$6
Azithromycin15$104$7

2022: 57 drugs

Part D drugs prescribed in 2022
Biktarvy17$147,342$8,667
Jardiance14$11,764$840
Tradjenta12$10,222$852
Symbicort15$6,383$426
Wixela Inhub32$5,539$173
Atorvastatin223$2,951$13
Terazosin33$2,440$74
Flunisolide33$2,213$67
Alvesco14$1,792$128
Amlodipine Besylate134$1,597$12
Tamsulosin76$1,485$20
Acyclovir36$1,434$40
Paxlovid (Eua)85$1,406$17
Losartan114$1,339$12
Fluticasone Propionate77$1,028$13
Lisinopril86$999$12
Levothyroxine36$796$22
Ipratropium20$749$37
Allopurinol38$735$19
Diclofenac18$715$40
Finasteride44$671$15
Hydrocodone-Acetaminophen35$658$19
Propranolol12$628$52
Metformin Hcl Er60$556$9
Pravastatin19$553$29
Gabapentin19$546$29
Metoprolol27$526$19
Simvastatin43$486$11
Valacyclovir16$473$30
Hydralazine12$464$39
Glipizide35$462$13
Chlorthalidone22$446$20
Olopatadine18$442$25
Alendronate42$418$10
Albuterol Sulfate Hfa25$410$16
Atenolol35$403$12
Sertraline22$389$18
Losartan-Hydrochlorothiazide13$382$29
Bisoprolol13$364$28
Omeprazole32$357$11
Famotidine28$353$13
Pantoprazole23$329$14
Azelastine19$323$17
Lovastatin24$277$12
Triamcinolone Acetonide16$269$17
Lisinopril-Hydrochlorothiazide21$262$12
Rosuvastatin19$253$13
Meloxicam34$252$7
Metformin18$247$14
Hydrochlorothiazide17$245$14
Citalopram Hbr13$212$16
Trazodone19$210$11
Ibandronate16$193$12
Cefadroxil16$156$10
Metoprolol15$152$10
Montelukast12$132$11
Zolpidem15$92$6

2021: 53 drugs

Part D drugs prescribed in 2021
Biktarvy13$121,493$9,346
Atorvastatin218$2,842$13
Terazosin38$2,522$66
Wixela Inhub17$1,948$115
Flunisolide23$1,570$68
Amlodipine Besylate131$1,536$12
Humulin N11$1,393$127
Losartan109$1,354$12
Alvesco14$1,262$90
Lisinopril90$1,114$12
Tamsulosin55$1,084$20
Levothyroxine40$926$23
Allopurinol37$891$24
Fluticasone Propionate69$889$13
Acyclovir21$864$41
Colchicine12$834$70
Finasteride50$779$16
Hydralazine11$746$68
Valacyclovir17$672$40
Omeprazole36$633$18
Atenolol62$566$9
Simvastatin49$552$11
Chlorthalidone14$514$37
Propranolol18$476$26
Glipizide37$470$13
Metoprolol21$470$22
Famotidine42$453$11
Metformin Hcl Er46$444$10
Fluocinonide11$440$40
Gabapentin14$430$31
Pantoprazole26$400$15
Duloxetine15$399$27
Alendronate36$373$10
Diclofenac13$365$28
Losartan-Hydrochlorothiazide11$353$32
Sertraline16$348$22
Triamcinolone Acetonide15$330$22
Azelastine18$328$18
Lovastatin27$312$12
Lisinopril-Hydrochlorothiazide20$285$14
Hydrochlorothiazide21$258$12
Ibandronate19$257$14
Metformin17$255$15
Carvedilol15$207$14
Olopatadine13$205$16
Furosemide13$204$16
Rosuvastatin17$196$12
Citalopram Hbr16$187$12
Meloxicam26$184$7
Metoprolol17$159$9
Hydrocodone-Acetaminophen16$141$9
Temazepam12$135$11
Trazodone11$128$12

2020: 47 drugs

Part D drugs prescribed in 2020
Biktarvy23$205,352$8,928
Tivicay18$93,571$5,198
Colchicine12$3,261$272
Advair Diskus18$2,834$157
Atorvastatin185$2,587$14
Alvesco25$2,044$82
Flunisolide25$1,717$69
Terazosin37$1,702$46
Levothyroxine46$1,165$25
Amlodipine Besylate96$1,159$12
Tamsulosin48$1,101$23
Chlorthalidone18$1,075$60
Lisinopril76$957$13
Fluticasone Propionate71$936$13
Finasteride38$903$24
Diclofenac14$868$62
Losartan73$867$12
Allopurinol29$735$25
Omeprazole35$685$20
Acyclovir22$658$30
Ventolin Hfa12$578$48
Pantoprazole30$564$19
Simvastatin47$522$11
Gabapentin15$514$34
Duloxetine16$500$31
Metoprolol19$465$24
Metformin Hcl Er42$395$9
Alendronate37$388$10
Nortriptyline15$384$26
Atenolol41$382$9
Famotidine39$352$9
Glipizide28$340$12
Lovastatin29$339$12
Sertraline15$334$22
Metformin20$316$16
Lisinopril-Hydrochlorothiazide23$311$14
Ibandronate11$300$27
Doxycycline Monohydrate11$256$23
Meloxicam39$249$6
Hydrocodone-Acetaminophen23$231$10
Veo Insulin15$216$14
Metoprolol18$200$11
Rosuvastatin15$185$12
Hydrochlorothiazide14$177$13
Trazodone14$152$11
Citalopram Hbr11$132$12
Zolpidem14$92$7

2019: 56 drugs

Part D drugs prescribed in 2019
Triumeq30$197,159$6,572
Tivicay42$186,194$4,433
Prezcobix44$184,019$4,182
Odefsey27$148,353$5,495
Descovy35$129,728$3,707
Genvoya19$98,952$5,208
Biktarvy20$90,880$4,544
Pifeltro11$29,195$2,654
Atorvastatin192$4,095$21
Flunisolide40$2,747$69
Terazosin41$1,437$35
Tamsulosin46$1,207$26
Levothyroxine45$1,179$26
Amlodipine Besylate94$1,133$12
Chlorthalidone16$1,077$67
Fluticasone Propionate77$1,052$14
Alvesco13$1,052$81
Finasteride40$981$25
Diclofenac11$957$87
Lisinopril71$852$12
Losartan66$846$13
Allopurinol23$809$35
Bupropion Xl19$791$42
Omeprazole34$685$20
Nabumetone13$678$52
Pantoprazole37$675$18
Ventolin Hfa14$673$48
Hydralazine14$639$46
Duloxetine13$572$44
Simvastatin55$556$10
Atenolol45$535$12
Metoprolol13$424$33
Alendronate38$391$10
Acyclovir18$372$21
Hydrocodone-Acetaminophen34$370$11
Acetaminophen-Codeine21$369$18
Glipizide25$330$13
Meloxicam50$327$7
Metformin Hcl Er36$315$9
Triamcinolone Acetonide17$306$18
Metoprolol27$293$11
Famotidine23$291$13
Metformin19$285$15
Lovastatin23$275$12
Clopidogrel14$261$19
Lisinopril-Hydrochlorothiazide19$212$11
Olopatadine13$212$16
Mirtazapine15$206$14
Trazodone20$194$10
Hydrochlorothiazide15$192$13
Zolpidem20$168$8
Temazepam15$166$11
Montelukast12$151$13
Citalopram Hbr11$138$13
Nortriptyline15$132$9
Lorazepam12$79$7

2018: 55 drugs

Part D drugs prescribed in 2018
Triumeq41$177,494$4,329
Descovy56$149,272$2,666
Prezcobix43$133,748$3,110
Tivicay39$111,327$2,855
Genvoya20$87,257$4,363
Odefsey24$70,021$2,918
Atripla16$46,307$2,894
Isentress25$40,422$1,617
Fosamprenavir22$34,576$1,572
Colchicine13$5,530$425
Atorvastatin164$3,973$24
Nevirapine Er12$2,252$188
Flunisolide30$1,990$66
Qvar16$1,711$107
Tamsulosin41$1,177$29
Lisinopril78$955$12
Losartan55$921$17
Bupropion Xl34$920$27
Levothyroxine33$918$28
Fluticasone Propionate69$879$13
Allopurinol19$873$46
Ventolin Hfa19$861$45
Finasteride34$851$25
Simvastatin70$601$9
Atenolol49$585$12
Omeprazole27$546$20
Pantoprazole20$509$25
Duloxetine14$505$36
Amlodipine Besylate64$505$8
Terazosin17$494$29
Hydralazine13$429$33
Pravastatin16$419$26
Alendronate28$346$12
Nortriptyline29$334$12
Gabapentin14$323$23
Triamcinolone Acetonide13$322$25
Hydrochlorothiazide27$320$12
Acyclovir19$302$16
Famotidine20$293$15
Hydrocodone-Acetaminophen19$289$15
Metformin20$280$14
Glipizide19$276$15
Lisinopril-Hydrochlorothiazide22$270$12
Acetaminophen-Codeine16$258$16
Metoprolol24$258$11
Escitalopram11$236$21
Metformin Hcl Er23$236$10
Losartan-Hydrochlorothiazide11$225$20
Lovastatin19$222$12
Ibuprofen14$208$15
Zolpidem22$192$9
Prednisone18$180$10
Meloxicam22$155$7
Lorazepam17$129$8
Trazodone15$116$8

2017: 56 drugs

Part D drugs prescribed in 2017
Descovy38$86,867$2,286
Prezcobix28$78,964$2,820
Atripla22$67,167$3,053
Isentress32$60,732$1,898
Tivicay20$57,102$2,855
Lexiva18$36,409$2,023
Truvada14$27,995$2,000
Triumeq11$27,767$2,524
Norvir14$9,208$658
Atorvastatin147$3,995$27
Menveo A-C-Y-W-135-Dip27$3,186$118
Didanosine12$1,968$164
Metoprolol12$1,207$101
Levothyroxine31$1,048$34
Diclofenac11$979$89
Lisinopril65$829$13
Nevirapine21$782$37
Tamsulosin22$774$35
Flunisolide20$763$38
Allopurinol15$742$49
Fluticasone Propionate54$721$13
Omeprazole24$658$27
Hydrocodone-Acetaminophen23$642$28
Losartan29$638$22
Gabapentin13$604$46
Mirtazapine25$554$22
Atenolol42$540$13
Simvastatin53$538$10
Ventolin Hfa13$528$41
Venlafaxine Hcl Er15$484$32
Finasteride17$468$28
Pantoprazole18$452$25
Glipizide18$397$22
Terazosin28$387$14
Acyclovir19$364$19
Amlodipine Besylate43$358$8
Lisinopril-Hydrochlorothiazide30$357$12
Metformin27$345$13
Famotidine15$337$22
Pravastatin11$257$23
Warfarin20$247$12
Meloxicam32$241$8
Sumatriptan14$231$16
Nortriptyline18$227$13
Ondansetron16$209$13
Cefadroxil12$202$17
Alendronate14$199$14
Prochlorperazine Maleate17$177$10
Zolpidem18$170$9
Metformin Hcl Er16$163$10
Triamcinolone Acetonide11$160$15
Metoprolol15$158$11
Acetaminophen-Codeine11$150$14
Lorazepam17$134$8
Lovastatin11$128$12
Trazodone11$113$10

2016: 23 drugs

Part D drugs prescribed in 2016
Truvada13$27,750$2,135
Norvir12$5,640$470
Didanosine11$1,804$164
Atorvastatin56$1,586$28
Tamsulosin14$860$61
Levothyroxine17$670$39
Nabumetone17$644$38
Simvastatin37$465$13
Acyclovir26$442$17
Lisinopril32$367$11
Omeprazole18$347$19
Nevirapine12$341$28
Fluticasone Propionate24$328$14
Losartan12$301$25
Amlodipine Besylate23$296$13
Venlafaxine13$281$22
Atenolol18$247$14
Metformin19$216$11
Triamcinolone Acetonide12$204$17
Cephalexin11$167$15
Terazosin12$160$13
Nortriptyline12$151$13
Lisinopril-Hydrochlorothiazide12$140$12

2015: 1 drug

Part D drugs prescribed in 2015
Truvada16$21,720$1,358

Money from drug and device companies

$157 in 2025

Industry payments by year
202512None$157
202411None$95

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
Boston ScientificGeneral - Pain Management$157
2 payments
  • Meals for General - Pain Management · 2025-06-18 · $150
  • Meals for Wavewriter Alpha Prime 16 · 2025-06-16 · $7
See all 2 published payments
Every published payment
Boston ScientificMeals · 2025-06-18General - Pain Management$150
Boston ScientificMeals · 2025-06-16Wavewriter Alpha Prime 16$7
See earlier years (2024)

2024: $95

Payments by company in 2024
Boston ScientificWavewriter Alpha Prime 16$95
1 payment
  • Meals for Wavewriter Alpha Prime 16 · 2024-10-24 · $95

Professional record

NPI
1164788725
More record details
Sole proprietor
No
Taxonomy
Student in a training program (390200000X)
Mailing address
700 Lawrence Expy, Internal Medicine Residents Room P3693, Santa Clara, CA, 95051
NPI first listed
2012-04-09
NPI last updated
2021-12-15

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

This office lists an electronic records connection.