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Michael F. Matsumoto, MD

Internal Medicine · San Jose

NPI 1841376373

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. Matsumoto’s office at (408) 972-7000 to ask if they take your plan before you enroll.

California Medical Board record

Licence G56035 · Current

Licensed to practise in California · since 1985 · expires 2027-04-30 · George Washington University School of Medicine.

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

School, training and certification

What this clinician told their state board, medical school and everything before it. Only some states publish this, so nothing here means the state does not say, not that there was no training or certification.

Specialty certification

  • American Board of Internal Medicine - Internal Medicine

Drugs they prescribed that Part D paid

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

Opioids were 0% of their 11 Part D prescriptions in 2023. Too few prescriptions to judge: with under about 50 a year, a handful of patients can swing this share.

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

Year by year

Part D prescribing by year
202311110% (0)100%$575
202217170% (0)100%$867
202120200% (0)100%$1,000
20193981650% (0)None$23,166
20183,7766033% (105)22%$187,908
20174,8155093% (162)21%$233,653
20165,2075974% (205)22%$274,474
20155,2867894% (225)21%$253,843
20145,2146635% (244)19%$356,275
20135,0566295% (269)20%$238,845

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

See the drugs prescribed each year

2023: 1 drug

Part D drugs prescribed in 2023
Adacel Tdap11$575$52

2022: 1 drug

Part D drugs prescribed in 2022
Adacel Tdap17$867$51

2021: 1 drug

Part D drugs prescribed in 2021
Adacel Tdap20$1,000$50

2019: 7 drugs

Part D drugs prescribed in 2019
Atorvastatin57$1,374$24
Terazosin15$452$30
Fluticasone Propionate23$362$16
Lisinopril27$325$12
Allopurinol11$321$29
Atenolol14$163$12
Amlodipine Besylate17$156$9

2018: 63 drugs

Part D drugs prescribed in 2018
Xifaxan11$23,065$2,097
Qvar125$14,063$113
Combivent Respimat16$12,772$798
Atorvastatin384$8,436$22
Advair Diskus14$5,669$405
Humulin N29$5,091$176
Pradaxa14$3,917$280
Spiriva Respimat12$3,511$293
Levothyroxine95$2,804$30
Gabapentin69$2,669$39
Lisinopril223$2,617$12
Humulin R17$2,578$152
Terazosin97$2,442$25
Allopurinol69$2,112$31
Dilt-Xr25$1,783$71
Fluticasone Propionate110$1,697$15
Atenolol137$1,668$12
Ventolin Hfa32$1,627$51
Tamsulosin49$1,573$32
Famotidine77$1,471$19
Losartan82$1,425$17
Glipizide80$1,224$15
Triamcinolone Acetonide46$1,146$25
Omeprazole49$1,142$23
Prednisone67$1,054$16
Simvastatin101$1,047$10
Metoprolol93$1,047$11
Hydrochlorothiazide92$1,041$11
Ranitidine37$1,017$27
Amlodipine Besylate134$1,002$7
Colchicine12$874$73
Pravastatin27$866$32
Clopidogrel30$856$29
Metformin69$809$12
Hydrocodone-Acetaminophen64$781$12
Furosemide56$674$12
Pantoprazole20$632$32
Hydralazine11$626$57
Cephalexin24$603$25
Doxycycline Monohydrate38$590$16
Warfarin38$486$13
Sertraline20$423$21
Citalopram Hbr30$410$14
Veo Insulin20$402$20
Alendronate32$401$13
Finasteride16$396$25
Trazodone31$382$12
Tizanidine42$364$9
Nortriptyline16$347$22
Lovastatin31$344$11
Lorazepam41$344$8
Ibuprofen15$329$22
Acetaminophen-Codeine20$293$15
Isosorbide Mononitrate Er20$260$13
Carvedilol22$239$11
Naproxen17$235$14
Lisinopril-Hydrochlorothiazide16$213$13
Mupirocin13$177$14
Meloxicam22$162$7
Tramadol13$134$10
Clonazepam15$121$8
Amoxicillin13$98$8
Ciprofloxacin12$97$8

2017: 66 drugs

Part D drugs prescribed in 2017
Xifaxan11$21,041$1,913
Qvar212$20,934$99
Atorvastatin456$10,798$24
Spiriva Respimat16$9,465$592
Humulin N39$5,906$151
Levothyroxine136$4,463$33
Gabapentin85$4,177$49
Dulera14$3,739$267
Losartan129$3,638$28
Humulin R14$3,605$257
Lisinopril296$3,497$12
Fluticasone Propionate202$3,309$16
Pradaxa14$3,074$220
Allopurinol87$2,911$33
Triamcinolone Acetonide64$2,908$45
Famotidine94$2,145$23
Atenolol177$2,124$12
Omeprazole76$1,975$26
Tamsulosin48$1,921$40
Dilt-Xr25$1,818$73
Terazosin118$1,797$15
Simvastatin163$1,794$11
Hydrocodone-Acetaminophen69$1,474$21
Metoprolol133$1,466$11
Hydralazine27$1,449$54
Fluocinonide14$1,386$99
Glipizide94$1,303$14
Clopidogrel41$1,259$31
Hydrochlorothiazide111$1,255$11
Ventolin Hfa28$1,170$42
Amlodipine Besylate139$1,112$8
Finasteride41$1,092$27
Prednisone80$1,009$13
Colchicine12$994$83
Alendronate57$856$15
Cephalexin30$816$27
Tizanidine64$791$12
Metformin63$733$12
Pantoprazole20$729$36
Ranitidine33$724$22
Acetaminophen-Codeine39$718$18
Sertraline22$714$32
Furosemide55$701$13
Doxycycline Monohydrate46$673$15
Warfarin50$662$13
Citalopram Hbr58$658$11
Insulin27$583$22
Nortriptyline29$561$19
Trazodone42$542$13
Pravastatin16$518$32
Lorazepam56$501$9
Tramadol46$496$11
Lovastatin40$443$11
Ibuprofen14$430$31
Clonidine18$397$22
Amiodarone15$374$25
Naproxen19$312$16
Clonazepam36$284$8
Sumatriptan12$251$21
Sulfamethoxazole-Trimethoprim21$213$10
Carvedilol20$200$10
Isosorbide Mononitrate Er13$174$13
Meloxicam21$170$8
Ciprofloxacin25$168$7
Insulin12$135$11
Zolpidem13$124$10

2016: 76 drugs

Part D drugs prescribed in 2016
Combivent Respimat26$20,915$804
Qvar169$15,284$90
Spiriva Respimat23$12,067$525
Atorvastatin432$11,855$27
Humulin N43$6,617$154
Gabapentin87$5,650$65
Levothyroxine129$4,747$37
Losartan125$4,034$32
Humulin R21$3,976$189
Lisinopril320$3,892$12
Dulera20$3,725$186
Hydrocodone-Acetaminophen99$3,575$36
Allopurinol99$3,559$36
Fluticasone Propionate206$3,419$17
Simvastatin198$3,035$15
Dilt-Xr35$2,910$83
Famotidine101$2,868$28
Omeprazole64$2,604$41
Metronidazole12$2,567$214
Atenolol195$2,317$12
Elidel11$2,302$209
Terazosin135$2,111$16
Amlodipine Besylate143$2,074$15
Nitrostat14$1,979$141
Tamsulosin33$1,939$59
Glipizide132$1,796$14
Metoprolol153$1,692$11
Finasteride43$1,590$37
Acetaminophen-Codeine74$1,565$21
Triamcinolone Acetonide56$1,494$27
Hydrochlorothiazide128$1,457$11
Clopidogrel39$1,442$37
Alendronate72$1,145$16
Hydralazine14$1,143$82
Furosemide87$1,119$13
Colchicine19$1,066$56
Bd Ultra-Fine Pen Needle15$1,014$68
Pantoprazole30$985$33
Warfarin75$982$13
Doxycycline Monohydrate55$968$18
Sertraline22$965$44
Metformin80$956$12
Lovastatin79$909$12
Nifedipine Er12$854$71
Alclometasone Dipropionate11$831$76
Prednisone55$801$15
Ventolin Hfa19$793$42
Ranitidine45$784$17
Nortriptyline28$709$25
Propranolol12$670$56
Lorazepam59$652$11
Proair Hfa19$640$34
Cephalexin31$598$19
Insulin26$597$23
Trazodone48$566$12
Citalopram Hbr43$552$13
Tizanidine41$550$13
Ibuprofen25$541$22
Amiodarone18$510$28
Pravastatin12$504$42
Naproxen22$454$21
Nystatin12$413$34
Clonidine19$399$21
Insulin13$354$27
Ondansetron Odt17$349$21
Ciprofloxacin38$340$9
Temazepam24$331$14
Carvedilol27$304$11
Meloxicam30$267$9
Tramadol22$246$11
Clonazepam26$237$9
Isosorbide Mononitrate Er14$221$16
Metformin Hcl Er13$148$11
Sulfamethoxazole-Trimethoprim15$146$10
Spironolactone11$92$8
Alprazolam12$83$7

2015: 76 drugs

Part D drugs prescribed in 2015
Qvar171$15,484$91
Combivent Respimat22$14,918$678
Atorvastatin385$11,036$29
Spiriva12$6,888$574
Dulera28$6,875$246
Raloxifene13$6,660$512
Fluticasone Propionate203$4,879$24
Levothyroxine131$4,808$37
Humulin N42$4,605$110
Gabapentin64$4,473$70
Hydrocodone-Acetaminophen116$4,155$36
Clobetasol Propionate16$3,979$249
Omeprazole80$3,919$49
Simvastatin245$3,871$16
Losartan124$3,737$30
Lisinopril306$3,658$12
Amlodipine Besylate139$3,390$24
Finasteride31$3,083$99
Allopurinol91$3,053$34
Dilt-Xr37$2,907$79
Atenolol229$2,724$12
Famotidine104$2,664$26
Terazosin164$2,459$15
Clopidogrel34$1,880$55
Humulin R17$1,858$109
Glipizide131$1,816$14
Tamsulosin38$1,756$46
Nabumetone49$1,723$35
Metronidazole12$1,569$131
Metoprolol141$1,555$11
Triamcinolone Acetonide52$1,540$30
Nitrostat18$1,453$81
Doxycycline Monohydrate65$1,437$22
Hydralazine14$1,422$102
Insulin26$1,369$53
Lovastatin115$1,337$12
Hydrochlorothiazide110$1,249$11
Nifedipine Er11$1,209$110
Alendronate70$1,178$17
Metformin99$1,172$12
Acetaminophen-Codeine57$1,158$20
Warfarin83$1,070$13
Proair Hfa30$959$32
Pantoprazole21$950$45
Ranitidine49$900$18
Furosemide71$883$12
Prednisone52$838$16
Lorazepam72$774$11
Sumatriptan19$774$41
Oxybutynin Chloride12$743$62
Colchicine11$724$66
Nortriptyline31$700$23
Oxycodone-Acetaminophen15$668$45
Cephalexin43$600$14
Bupropion Xl13$543$42
Insulin12$532$44
Naproxen25$526$21
Ibuprofen20$500$25
Trazodone48$488$10
Citalopram Hbr36$472$13
Temazepam27$447$17
Tizanidine35$439$13
Clonazepam41$394$10
Propranolol15$371$25
Nystatin11$359$33
Carvedilol29$349$12
Tramadol28$330$12
Clonidine13$265$20
Ciprofloxacin29$249$9
Metformin Hcl Er21$243$12
Isosorbide Mononitrate Er13$196$15
Sulfamethoxazole-Trimethoprim14$166$12
Lisinopril-Hydrochlorothiazide12$143$12
Spironolactone12$137$11
Alprazolam16$118$7
Meloxicam11$106$10

2014: 72 drugs

Part D drugs prescribed in 2014
Gleevec13$110,665$8,513
Qvar140$11,278$81
Zostavax56$10,360$185
Combivent Respimat13$8,917$686
Atorvastatin271$8,312$31
Dulera15$6,404$427
Raloxifene17$6,198$365
Fluticasone Propionate192$5,164$27
Simvastatin284$5,005$18
Gabapentin62$4,612$74
Omeprazole91$4,392$48
Losartan140$4,155$30
Lisinopril323$3,819$12
Humulin N33$3,739$113
Hydrocodone-Acetaminophen161$3,732$23
Finasteride36$3,452$96
Levothyroxine138$3,437$25
Amlodipine Besylate142$3,085$22
Dilt-Xr36$2,936$82
Atenolol206$2,464$12
Humulin R21$2,341$111
Terazosin153$2,261$15
Allopurinol87$2,207$25
Humalog20$2,186$109
Triamcinolone Acetonide66$2,186$33
Elidel12$2,138$178
Glipizide149$2,061$14
Colcrys19$2,036$107
Clopidogrel40$1,919$48
Flecainide Acetate14$1,860$133
Famotidine84$1,797$21
Lovastatin141$1,667$12
Pravastatin27$1,637$61
Metoprolol139$1,484$11
Hydrochlorothiazide123$1,385$11
Alendronate83$1,349$16
Nabumetone42$1,227$29
Insulin25$1,151$46
Proair Hfa38$1,144$30
Hydralazine13$1,101$85
Metformin83$1,061$13
Warfarin85$1,056$12
Furosemide71$991$14
Tamsulosin30$946$32
Nitrostat15$946$63
Lorazepam91$935$10
Doxycycline Monohydrate40$893$22
Ibuprofen34$749$22
Acetaminophen-Codeine36$727$20
Pantoprazole21$727$35
Ranitidine39$725$19
Adacel Tdap15$615$41
Donepezil13$586$45
Fluocinonide14$585$42
Trazodone43$513$12
Prednisone46$497$11
Nortriptyline21$488$23
Tizanidine29$447$15
Clonazepam35$417$12
Citalopram Hbr29$393$14
Naproxen17$375$22
Cephalexin28$365$13
Carvedilol26$349$13
Clonidine13$292$22
Tramadol26$249$10
Temazepam14$219$16
Ciprofloxacin24$203$8
Amoxicillin17$195$11
Metformin Hcl Er12$195$16
Sulfamethoxazole-Trimethoprim19$187$10
Alprazolam20$148$7
Spironolactone11$135$12

2013: 75 drugs

Part D drugs prescribed in 2013
Zostavax87$15,486$178
Qvar163$13,909$85
Evista25$9,645$386
Combivent Respimat15$9,591$639
Dulera24$7,413$309
Simvastatin308$6,782$22
Fluticasone Propionate223$6,160$28
Pravastatin96$5,836$61
Spiriva12$5,487$457
Gabapentin53$4,919$93
Atorvastatin131$4,545$35
Losartan113$4,192$37
Finasteride48$4,004$83
Omeprazole93$3,941$42
Lisinopril324$3,844$12
Hydrocodone-Acetaminophen187$3,472$19
Levothyroxine127$3,302$26
Humulin N38$3,218$85
Dilt-Xr33$3,054$93
Colcrys20$2,840$142
Amlodipine Besylate118$2,761$23
Famotidine92$2,076$23
Atenolol168$2,013$12
Clopidogrel32$1,994$62
Allopurinol66$1,939$29
Terazosin120$1,863$16
Elidel11$1,811$165
Hydralazine25$1,789$72
Humulin R25$1,757$70
Lovastatin144$1,747$12
Triamcinolone Acetonide48$1,691$35
Hydrochlorothiazide139$1,544$11
Glipizide106$1,488$14
Proair Hfa47$1,440$31
Sulindac16$1,325$83
Flecainide Acetate12$1,313$109
Alendronate77$1,302$17
Lorazepam106$1,262$12
Humalog14$1,243$89
Insulin33$1,151$35
Metoprolol112$1,137$10
Tamsulosin34$1,095$32
Warfarin85$1,062$12
Etodolac12$1,050$87
Acetaminophen-Codeine35$1,035$30
Nitrostat18$1,011$56
Metformin78$1,002$13
Furosemide57$794$14
Temazepam27$730$27
Pantoprazole21$711$34
Nabumetone18$698$39
Doxycycline Hyclate32$673$21
Trazodone47$612$13
Donepezil13$591$45
Prazosin35$562$16
Citalopram Hbr34$522$15
Ranitidine31$501$16
Naproxen13$494$38
Tizanidine21$478$23
Prednisone51$467$9
Insulin15$437$29
Clonazepam34$411$12
Nortriptyline19$383$20
Ibuprofen23$382$17
Oxybutynin Chloride13$350$27
Oxycodone-Acetaminophen19$323$17
Carvedilol28$321$11
Cephalexin20$297$15
Fluoxetine13$212$16
Baclofen12$201$17
Alprazolam23$195$8
Amoxicillin13$190$15
Azithromycin14$169$12
Ciprofloxacin17$153$9
Tramadol17$136$8

Professional record

NPI
1841376373
Licence
CA G56035California G56035: Current · expires 2027-04-30
More record details
Sole proprietor
No
Medicaid ID
CA 00G560350
Taxonomy
Internal medicine (207R00000X)
Mailing address
1800 Harrison St Fl 7, Oakland, CA, 94612
NPI first listed
2006-10-27
NPI last updated
2007-07-08

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