Skip to main content
UniHealth

Doctor search

Wendy O Buffett, MD

Family Practice · Berkeley

NPI 1154373165

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
12
2 carriers
Office
1
Since medical school
33 years
Boston University School of Medicine, 1993

Offices

1 location · One Medical Group Inc · 330 clinicians in this group

Looking this up.

Plans that list them

12 plans · 2 carriers

A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Buffett’s office at (888) 663-6331 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.

12 of 12 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
Imperial Courage Plan (HMO)Imperial Health Plan of California, Inc.ListedSep 1, 2026
Imperial Dynamic Plan (HMO)Imperial Health Plan of California, Inc.ListedSep 1, 2026
Imperial Senior Value (HMO C-SNP)Imperial Health Plan of California, Inc.ListedSep 1, 2026

California Medical Board record

Licence G80799 · Current

Licensed to practise in California · since 1995 · expires 2027-03-31 · Boston 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 Family Medicine - Family Medicine

Original Medicare doctor bills

$1,267

Medicare paid this office $1,267 for 12 people.

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

Who their Medicare patients are

12 Original Medicare patients in 2024. Average age 71 · 85 and older 0% · Also on Medicaid 0% · Health risk score 1.21. Above the middle of the specialty; the typical family practice clinician is at 1.13.

The office billed $7,991, Medicare allowed $1,591 and paid $1,267; for 15 services of 4 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

Original Medicare by year
20241215711.21$7,991$1,267
202368128750.99$65,388$10,209
2022129320730.81$161,785$30,154
2021134306740.73$133,420$25,763
20204980730.79$29,560$5,654
2017334883730.96$205,011$61,759
2016264996730.89$162,708$47,857
20153251,268720.84$227,406$67,357
2014225650730.92$136,362$34,597
2013193634730.95$126,767$33,346

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: 1 service

Original Medicare services billed in 2023
Short return visit (20+ min)56$8,146$82

2022: 5 services

Original Medicare services billed in 2022
Short return visit (20+ min)90$12,698$80
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit39$5,986$153
Return visit (30+ min)28$5,102$119
Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage15$1,054$70
Administration of influenza virus vaccine17$613$36

2021: 7 services

Original Medicare services billed in 2021
Short return visit (20+ min)69$10,003$80
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit33$5,173$157
Return visit (30+ min)29$4,168$119
New patient visit (30+ min)15$1,138$76
Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage15$996$66
Intramuscular administration of single severe acute respiratory syndrome coronavirus 2 (covid-19) vaccine, mrna-lnp, spike protein, preservative free, 100 mcg/0.5ml dosage; first dose27$461$17
Administration of influenza virus vaccine17$356$21

2020: 1 service

Original Medicare services billed in 2020
Short return visit (20+ min)33$3,193$69

2017: 8 services

Original Medicare services billed in 2017
Return visit (30+ min)192$27,674$81
Short return visit (20+ min)161$13,441$58
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit40$5,372$134
Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit22$4,320$196
Pneumococcal vaccine, 13-valent20$3,708$185
Administration of influenza virus vaccine61$1,897$31
Influenza vaccine, quadrivalent, preservative free, 0.5 ml dosage57$1,080$19
Administration of pneumococcal vaccine24$746$31

2016: 8 services

Original Medicare services billed in 2016
Return visit (30+ min)153$19,563$77
Short return visit (20+ min)100$8,287$55
Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit39$7,484$192
Pneumococcal vaccine, 13-valent19$3,286$173
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit22$2,888$131
Administration of influenza virus vaccine48$1,466$30
Influenza vaccine, quadrivalent, preservative free, 0.5 ml dosage42$794$18
Administration of pneumococcal vaccine22$658$30

2015: 10 services

Original Medicare services billed in 2015
Return visit (30+ min)181$24,810$82
Short return visit (20+ min)180$17,339$55
Pneumococcal vaccine, 13-valent46$7,542$164
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit39$5,143$132
Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit17$3,291$194
Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment12$2,238$187
Administration of influenza virus vaccine72$2,162$30
Administration of pneumococcal vaccine52$1,557$30
Influenza vaccine, quadrivalent, preservative free, 0.5 ml dosage66$1,175$18
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report15$203$14

2014: 8 services

Original Medicare services billed in 2014
Return visit (30+ min)121$13,844$79
Short return visit (20+ min)137$11,514$51
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit24$3,089$129
Administration of influenza virus vaccine57$1,758$30
Pneumococcal vaccine, 23-valent11$823$75
Influenza vaccine, quadrivalent, preservative free, 0.5 ml dosage42$740$18
Administration of pneumococcal vaccine11$328$30
Influenza virus vaccine, split virus, when administered to individuals 3 years of age and older, for intramuscular use (flulaval)13$118$8

2013: 9 services

Original Medicare services billed in 2013
Short return visit (20+ min)122$12,037$50
Return visit (30+ min)97$10,558$82
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit21$2,686$128
Administration of influenza virus vaccine55$1,736$30
Pneumococcal vaccine, 23-valent12$830$69
Administration of pneumococcal vaccine12$368$31
Influenza virus vaccine, split virus, when administered to individuals 3 years of age and older, for intramuscular use (flulaval)33$281$9
Administration of vaccine14$251$18
Influenza virus vaccine, split virus, when administered to individuals 3 years of age and older, for intramuscular use (fluzone)17$201$12

Drugs they prescribed that Part D paid

$2,089

Pharmacies billed $2,089 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 38) in 2024. Too few prescriptions to judge: with under about 50 a year, a handful of patients can swing this share.

32 generic and fewer than 11 brand-name prescriptions · $2,089 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.

Year by year

Part D prescribing by year
202438170% (0)None$2,089
2023415773% (14)None$47,759
2022438796% (24)None$32,059
202120261None7%$5,335
202049310% (0)None$2,396
201923None0% (0)0%$298
2018779198NoneNone$74,372
20173,1963505% (157)17%$238,203
20163,1383175% (159)19%$227,509
20152,7672936% (155)18%$160,934
20142,5412276% (159)None$129,358
20132,5801895% (116)22%$131,259

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

See the drugs prescribed each year

2023: 8 drugs

Part D drugs prescribed in 2023
Xarelto12$6,213$518
Atorvastatin27$498$18
Amlodipine Besylate17$304$18
Lisinopril25$300$12
Sertraline17$178$10
Tramadol14$163$12
Levothyroxine20$157$8
Lorazepam16$50$3

2022: 10 drugs

Part D drugs prescribed in 2022
Levothyroxine24$356$15
Atorvastatin30$301$10
Rosuvastatin12$234$19
Tramadol20$225$11
Amlodipine Besylate16$137$9
Alprazolam11$102$9
Trazodone15$97$6
Lorazepam15$67$4
Donepezil12$43$4
Lisinopril16$42$3

2021: 4 drugs

Part D drugs prescribed in 2021
Levothyroxine14$225$16
Atorvastatin18$201$11
Zolpidem12$103$9
Lorazepam12$60$5

2018: 20 drugs

Part D drugs prescribed in 2018
Xarelto13$16,592$1,276
Celecoxib11$1,834$167
Levothyroxine52$1,437$28
Atorvastatin45$1,303$29
Metoprolol15$621$41
Lisinopril64$524$8
Tamsulosin12$471$39
Omeprazole16$331$21
Donepezil17$277$16
Hydrochlorothiazide36$227$6
Montelukast11$215$20
Losartan27$211$8
Gabapentin15$173$12
Atenolol15$165$11
Simvastatin17$140$8
Citalopram Hbr14$132$9
Amlodipine Besylate14$125$9
Metformin15$125$8
Metoprolol11$87$8
Sertraline13$54$4

2017: 71 drugs

Part D drugs prescribed in 2017
Xarelto23$18,862$820
Advair Diskus19$14,991$789
Lantus Solostar17$12,616$742
Creon13$9,153$704
Levothyroxine173$5,154$30
Synthroid58$3,988$69
Niacin Er14$3,423$245
Atorvastatin136$3,321$24
Estrace11$3,149$286
Metoprolol48$2,680$56
Liothyronine40$2,575$64
Celecoxib12$2,390$199
Estradiol25$2,368$95
Proair Hfa26$1,496$58
Tamsulosin45$1,453$32
Gabapentin60$1,439$24
Morphine Sulfate Er13$1,428$110
Oxycodone-Acetaminophen33$1,349$41
Bupropion Xl22$1,336$61
Ventolin Hfa23$1,325$58
Lisinopril168$1,318$8
Acyclovir23$1,141$50
Potassium Chloride18$1,085$60
Omeprazole46$1,057$23
Oxybutynin Chloride Er13$1,057$81
Rizatriptan13$1,051$81
Pravastatin18$980$54
Fentanyl12$943$79
Fluticasone Propionate46$889$19
Losartan85$851$10
Simvastatin86$842$10
Duloxetine18$824$46
Fluoxetine17$758$45
Hydrocodone-Acetaminophen60$703$12
Warfarin30$703$23
Metformin62$702$11
Montelukast27$668$25
Valsartan12$626$52
Polyethylene Glycol 335024$621$26
Amlodipine Besylate58$611$11
Trazodone48$597$12
Hydrochlorothiazide110$547$5
Chlorthalidone13$519$40
Zolpidem35$504$14
Klor-Con 1017$427$25
Donepezil33$425$13
Bupropion Hcl Sr11$378$34
Quinapril11$362$33
Atenolol58$361$6
Citalopram Hbr39$357$9
Allopurinol23$328$14
Metoprolol47$321$7
Methadone15$319$21
Sertraline48$314$7
Clopidogrel17$242$14
Sumatriptan14$232$17
Carvedilol25$230$9
Escitalopram12$202$17
Furosemide38$200$5
Ibu16$165$10
Clonazepam15$158$11
Terazosin15$152$10
Diazepam33$151$5
Metformin Hcl Er13$135$10
Lovastatin12$120$10
Nortriptyline15$116$8
Mirtazapine14$113$8
Cyclobenzaprine17$90$5
Tramadol11$66$6
Meloxicam19$52$3
Lorazepam20$47$2

2016: 76 drugs

Part D drugs prescribed in 2016
Advair Diskus22$11,302$514
Lantus Solostar18$10,597$589
Xarelto19$10,481$552
Methylphenidate Er20$5,931$297
Symbicort12$4,646$387
Levothyroxine141$4,522$32
Synthroid75$4,232$56
Atorvastatin111$3,422$31
Diovan12$2,190$183
Morphine Sulfate Er17$1,862$110
Oxycodone-Acetaminophen28$1,825$65
Hydrocodone-Acetaminophen55$1,713$31
Levetiracetam16$1,686$105
Lisinopril155$1,675$11
Metoprolol42$1,674$40
Metformin62$1,508$24
Liothyronine26$1,442$55
Simvastatin97$1,424$15
Duloxetine19$1,412$74
Proair Hfa25$1,361$54
Ventolin Hfa25$1,305$52
Potassium Chloride25$1,272$51
Tamsulosin34$1,258$37
Bystolic11$1,231$112
Fluoxetine30$1,183$39
Estradiol23$1,097$48
Omeprazole51$1,084$21
Fluticasone Propionate50$1,014$20
Acyclovir22$938$43
Venlafaxine15$903$60
Gabapentin47$900$19
Warfarin42$896$21
Losartan82$879$11
Valsartan19$863$45
Pravastatin16$818$51
Chlorthalidone17$794$47
Trazodone55$783$14
Atenolol74$700$9
Bupropion Xl16$622$39
Hydromorphone12$572$48
Montelukast24$568$24
Hydrochlorothiazide96$565$6
Bupropion Hcl Sr28$552$20
Amlodipine Besylate74$492$7
Allopurinol27$465$17
Methadone18$444$25
Minocycline12$411$34
Calcitriol13$411$32
Irbesartan11$399$36
Polyethylene Glycol 335014$344$25
Citalopram Hbr42$342$8
Pantoprazole24$302$13
Zolpidem28$294$10
Quinapril14$288$21
Metoprolol35$259$7
Triamterene-Hydrochlorothiazid12$253$21
Donepezil24$235$10
Clopidogrel28$234$8
Losartan-Hydrochlorothiazide15$234$16
Lovastatin13$221$17
Klor-Con 1019$180$9
Metformin Hcl Er21$178$8
Terazosin11$168$15
Quetiapine11$148$13
Sertraline18$146$8
Ibuprofen19$141$7
Furosemide37$140$4
Ondansetron Odt12$139$12
Diazepam26$125$5
Glipizide14$119$9
Escitalopram12$118$10
Lisinopril-Hydrochlorothiazide16$112$7
Lorazepam25$107$4
Carvedilol11$51$5
Pioglitazone11$39$4
Amoxicillin11$29$3

2015: 64 drugs

Part D drugs prescribed in 2015
Xarelto16$7,273$455
Advair Diskus21$6,617$315
Methylphenidate Er17$3,694$217
Levothyroxine124$3,421$28
Synthroid63$3,283$52
Duloxetine21$2,468$118
Celecoxib12$2,229$186
Morphine Sulfate Er16$2,112$132
Atorvastatin94$2,060$22
Premarin12$1,982$165
Proair Hfa38$1,940$51
Liothyronine35$1,609$46
Oxycodone-Acetaminophen17$1,287$76
Hydrocodone-Acetaminophen59$1,238$21
Fentanyl19$1,218$64
Gabapentin28$1,096$39
Metoprolol32$1,081$34
Warfarin44$1,047$24
Lisinopril175$973$6
Chlorthalidone21$954$45
Estradiol19$947$50
Valsartan15$869$58
Pravastatin15$795$53
Omeprazole54$783$14
Fluticasone Propionate38$775$20
Losartan64$697$11
Tamsulosin22$674$31
Bupropion Hcl Sr30$655$22
Hydromorphone20$619$31
Simvastatin86$618$7
Irbesartan13$610$47
Venlafaxine12$587$49
Hydrochlorothiazide93$564$6
Metformin60$554$9
Valacyclovir11$527$48
Trazodone63$460$7
Acyclovir20$432$22
Amlodipine Besylate60$424$7
Zolpidem26$424$16
Potassium Chloride12$394$33
Atenolol50$368$7
Montelukast19$365$19
Citalopram Hbr42$355$8
Quinapril15$331$22
Clonazepam12$288$24
Lovastatin13$247$19
Levetiracetam22$241$11
Pantoprazole25$238$10
Lorazepam39$231$6
Donepezil17$230$14
Clopidogrel18$225$12
Metformin Hcl Er26$214$8
Furosemide35$206$6
Triamterene-Hydrochlorothiazid16$195$12
Metoprolol24$191$8
Minocycline12$171$14
Sertraline32$162$5
Fluoxetine23$154$7
Ibuprofen16$119$7
Lisinopril-Hydrochlorothiazide14$117$8
Glipizide16$65$4
Diazepam13$64$5
Tramadol12$61$5
Carvedilol12$57$5

2014: 61 drugs

Part D drugs prescribed in 2014
Advair Diskus19$7,062$372
Duloxetine12$4,721$393
Novolog Flexpen11$3,922$357
Methylphenidate Er19$3,599$189
Synthroid61$2,709$44
Levothyroxine165$2,588$16
Novolin 70-3014$2,479$177
Morphine Sulfate Er20$2,206$110
Benicar Hct12$2,001$167
Oxycodone-Acetaminophen20$1,600$80
Atorvastatin64$1,598$25
Gabapentin36$1,429$40
Liothyronine16$1,410$88
Fentanyl14$1,224$87
Hydrocodone-Acetaminophen78$1,137$15
Lisinopril153$1,089$7
Simvastatin95$1,072$11
Estradiol34$1,053$31
Metoprolol23$1,035$45
Omeprazole65$1,019$16
Proair Hfa18$881$49
Klor-Con 1012$859$72
Pravastatin35$829$24
Hydromorphone17$766$45
Warfarin41$661$16
Valacyclovir16$602$38
Losartan49$597$12
Venlafaxine12$570$48
Diltiazem 24hr Er14$533$38
Metformin46$507$11
Hydrochlorothiazide87$496$6
Ventolin Hfa11$496$45
Potassium Chloride13$494$38
Montelukast11$464$42
Oxybutynin Chloride13$423$33
Bupropion Hcl Sr27$414$15
Fluticasone Propionate16$378$24
Zolpidem47$335$7
Amlodipine Besylate41$332$8
Tamsulosin26$330$13
Atenolol53$321$6
Trazodone49$294$6
Triamterene-Hydrochlorothiazid21$261$12
Nitrofurantoin Mono-Macro11$247$22
Temazepam13$235$18
Lorazepam30$234$8
Metformin Hcl Er20$230$11
Metoprolol27$200$7
Furosemide37$192$5
Metoclopramide18$192$11
Sertraline25$184$7
Donepezil12$165$14
Allopurinol11$155$14
Levetiracetam12$150$12
Lovastatin13$147$11
Lisinopril-Hydrochlorothiazide15$134$9
Pantoprazole16$133$8
Fluoxetine16$121$8
Clopidogrel13$117$9
Citalopram Hbr19$96$5
Clonazepam12$67$6

2013: 58 drugs

Part D drugs prescribed in 2013
Advair Diskus22$7,188$327
Symbicort16$4,018$251
Diovan12$3,191$266
Detrol La12$2,487$207
Gabapentin42$2,470$59
Celebrex11$2,456$223
Atorvastatin50$2,330$47
Levothyroxine178$1,967$11
Klor-Con 1033$1,930$58
Metoprolol29$1,621$56
Synthroid43$1,529$36
Hydromorphone15$1,358$91
Omeprazole69$1,225$18
Lisinopril159$1,186$7
Simvastatin126$1,086$9
Fentanyl11$1,008$92
Warfarin55$984$18
Vivelle-Dot13$966$74
Diltiazem Er11$936$85
Estradiol32$936$29
Fluticasone Propionate24$895$37
Proair Hfa11$811$74
Bethanechol Chloride13$801$62
Diltiazem 24hr Er17$765$45
Liothyronine14$759$54
Oxycodone-Acetaminophen13$736$57
Losartan38$734$19
Hydrocodone-Acetaminophen50$627$13
Sertraline66$598$9
Pravastatin39$561$14
Hydrochlorothiazide90$559$6
Imipramine11$553$50
Chlorthalidone12$539$45
Metformin38$477$13
Trazodone65$471$7
Atenolol75$459$6
Pantoprazole19$426$22
Lovastatin18$394$22
Amlodipine Besylate50$364$7
Tamsulosin25$346$14
Losartan-Hydrochlorothiazide13$329$25
Citalopram Hbr21$300$14
Metformin Hcl Er21$271$13
Clopidogrel21$261$12
Metoprolol18$244$14
Furosemide38$210$6
Lisinopril-Hydrochlorothiazide16$210$13
Zolpidem34$208$6
Levetiracetam12$206$17
Triamterene-Hydrochlorothiazid14$183$13
Mirtazapine12$180$15
Allopurinol15$155$10
Hydroxyzine11$149$14
Metoclopramide14$137$10
Clonazepam15$103$7
Triamterene-Hctz12$103$9
Azithromycin11$98$9
Ibuprofen11$85$8

Professional record

NPI
1154373165
Licence
CA G80799California G80799: Current · expires 2027-03-31
Trained
Boston University School of Medicine, 1993 · 33 years ago
Video visits
Lists video visits
Gender
Female
More record details
Sole proprietor
No
Medicaid ID
CA 00G807990
Taxonomy
Family medicine (207Q00000X)
Mailing address
1 Embarcadero Ctr Ste 1900, San Francisco, CA, 94111
NPI first listed
2006-05-17
NPI last updated
2025-03-17
NPI record certified
2025-03-17

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

Extra NPI addresses: 500 San Pablo Ave, Albany, CA, 94706 · 500 San Pablo Street, Albany, CA, 94706