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William T Hart, MD

Sleep Medicine · Palo Alto

NPI 1609856582

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
Not verified
Not the same as out of network.
Offices
3

Offices

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

Looking this up.

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. Hart’s office to ask if they take your plan before you enroll.

California Medical Board record

Licence G62162 · Current

Licensed to practise in California · since 1988 · expires 2027-04-30 · Ponce School of Medicine.

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

Original Medicare doctor bills

$190,557

Medicare paid this office $190,557 for 700 people.

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

Largest Original Medicare bills
Sleep study in sleep lab (6 years or older)94$52,899$563
Sleep study in sleep lab with continuous airway pressure (6 years or older)67$39,815$569
Return visit (30+ min)270$27,844$95
Long return visit (40+ min)170$27,421$144
New patient visit (45+ min)129$15,493$120
See all 9 services
Every Original Medicare service billed
Sleep study in sleep lab (6 years or older)94$52,899$563
Sleep study in sleep lab with continuous airway pressure (6 years or older)67$39,815$569
Return visit (30+ min)270$27,844$95
Long return visit (40+ min)170$27,421$144
New patient visit (45+ min)129$15,493$120
Short return visit (20+ min)209$14,488$68
New patient visit (30+ min)61$5,435$89
Sleep study including heart rate, breathing, airflow, and effort63$4,962$79
Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's24$325$12

Who their Medicare patients are

700 Original Medicare patients in 2024. Average age 74 · Under 65 4% · 85 and older 9% · Women 44% · Also on Medicaid 10% · Health risk score 0.99. At or below the middle of the specialty; the typical sleep medicine clinician is at 1.21.

Conditions among them: High blood pressure 63% · Atrial fibrillation 24% · Coronary heart disease 23% · Diabetes 21% · Depression 20% · Chronic kidney disease 16% · Cancer 16% · Heart failure 12% · COPD 9% · Stroke 5% · Dementia 2%.

The office billed $1,067,790, Medicare allowed $257,492 and paid $190,557; for 1,161 services of 16 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
20247001,161740.99$1,067,790$190,557
20237351,190741.03$1,038,313$212,481
20227631,297740.99$1,066,919$232,278
20217731,349730.99$1,011,364$237,807
20206781,176731.08$765,099$171,786
20199021,745721.15$1,555,819$328,338
20188831,675721.09$1,402,633$288,701
20178411,589721.18$1,283,089$265,946
20167371,481721.06$1,263,383$260,533
20157401,569711.07$1,267,082$241,162
20146501,422711.03$1,173,237$209,051
20136211,325711.04$1,140,727$207,406

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: 9 services

Original Medicare services billed in 2023
Long return visit (40+ min)287$48,101$144
Sleep study in sleep lab with continuous airway pressure (6 years or older)76$45,657$601
Sleep study in sleep lab (6 years or older)71$40,603$564
Return visit (30+ min)335$36,095$102
New patient visit (60+ min)150$25,366$169
Short return visit (20+ min)93$6,752$73
New patient visit (45+ min)31$3,991$129
Sleep study including heart rate, breathing, airflow, and effort46$3,925$80
New patient visit (30+ min)13$1,185$91

2022: 10 services

Original Medicare services billed in 2022
Long return visit (40+ min)289$50,930$149
Sleep study in sleep lab (6 years or older)86$48,552$565
Sleep study in sleep lab with continuous airway pressure (6 years or older)74$45,599$592
Return visit (30+ min)317$35,674$108
New patient visit (60+ min)172$30,706$179
Short return visit (20+ min)109$8,005$73
New patient visit (45+ min)31$4,274$138
Sleep study including heart rate, breathing, airflow, and effort45$3,311$74
Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen31$1,666$50
Office for the evaluation and management of established patient that may not require presence of healthcare professional45$998$22

2021: 11 services

Original Medicare services billed in 2021
Sleep study in sleep lab with continuous airway pressure (6 years or older)89$55,644$611
Long return visit (40+ min)263$48,219$152
Sleep study in sleep lab (6 years or older)76$43,924$578
Return visit (30+ min)299$34,061$106
New patient visit (60+ min)111$21,028$189
Short return visit (20+ min)201$15,622$74
New patient visit (45+ min)83$11,694$141
Sleep study including heart rate, breathing, airflow, and effort35$3,230$90
New patient visit (30+ min)17$1,458$86
Office for the evaluation and management of established patient that may not require presence of healthcare professional56$1,295$21
Telephone medical discussion with physician, 21-30 minutes12$474$40

2020: 9 services

Original Medicare services billed in 2020
Sleep study in sleep lab (6 years or older)66$37,232$564
Long return visit (40+ min)256$36,243$120
Return visit (30+ min)268$26,317$88
Sleep study in sleep lab with continuous airway pressure (6 years or older)35$20,058$557
New patient visit (60+ min)104$17,841$172
Telephone medical discussion with physician, 21-30 minutes123$11,926$93
Sleep study including heart rate, breathing, airflow, and effort84$9,613$106
New patient visit (45+ min)56$6,884$123
Short return visit (20+ min)59$3,405$58

2019: 10 services

Original Medicare services billed in 2019
Sleep study in sleep lab with continuous airway pressure (6 years or older)170$106,608$589
Sleep study in sleep lab (6 years or older)120$67,830$561
Long return visit (40+ min)390$62,571$122
Return visit (30+ min)387$37,110$87
New patient visit (45+ min)159$19,731$124
New patient visit (60+ min)103$17,563$171
Sleep study including heart rate, breathing, airflow, and effort53$7,306$126
Short return visit (20+ min)100$6,383$61
Office for the evaluation and management of established patient that may not require presence of healthcare professional52$1,109$21
New patient visit (30+ min)13$1,051$81

2018: 10 services

Original Medicare services billed in 2018
Sleep study in sleep lab with continuous airway pressure (6 years or older)155$93,687$578
Sleep study in sleep lab (6 years or older)115$62,987$538
Long return visit (40+ min)365$52,725$108
Return visit (30+ min)424$37,323$81
New patient visit (45+ min)168$20,673$123
Short return visit (20+ min)126$7,284$56
New patient visit (60+ min)47$6,917$147
Sleep study including heart rate, breathing, airflow, and effort28$4,007$143
New patient visit (30+ min)22$1,730$79
Office for the evaluation and management of established patient that may not require presence of healthcare professional46$859$17

2017: 12 services

Original Medicare services billed in 2017
Sleep study in sleep lab with continuous airway pressure (6 years or older)147$83,643$554
Sleep study in sleep lab (6 years or older)100$53,645$526
Long return visit (40+ min)360$52,648$112
Return visit (30+ min)349$29,979$74
New patient visit (45+ min)151$16,642$110
New patient visit (60+ min)89$14,037$158
Short return visit (20+ min)80$4,134$50
Initial hospital care with moderate level of medical decision making at least 75 minutes24$3,966$165
Sleep study including heart rate, breathing, airflow, and effort28$3,659$131
Sleep study including heart rate, breathing, airflow, and effort27$1,364$51
New patient visit (30+ min)14$1,086$78
Office for the evaluation and management of established patient that may not require presence of healthcare professional38$669$16

2016: 12 services

Original Medicare services billed in 2016
Sleep study in sleep lab with continuous airway pressure (6 years or older)157$91,309$550
Sleep study in sleep lab (6 years or older)110$57,470$522
Return visit (30+ min)396$37,789$79
Long return visit (40+ min)231$34,227$114
New patient visit (45+ min)149$19,111$128
Short return visit (20+ min)113$6,196$54
New patient visit (30+ min)54$4,176$77
Sleep study including heart rate, breathing, airflow, and effort22$3,081$140
New patient visit (60+ min)19$3,071$162
Initial hospital care with moderate level of medical decision making at least 75 minutes15$2,572$161
Sleep study including heart rate, breathing, airflow, and effort11$550$50
Office for the evaluation and management of established patient that may not require presence of healthcare professional28$499$16

2015: 9 services

Original Medicare services billed in 2015
Sleep study in sleep lab with continuous airway pressure (6 years or older)129$76,980$570
Return visit (30+ min)420$48,594$86
Sleep study in sleep lab (6 years or older)83$45,416$541
Long return visit (40+ min)194$28,978$117
New patient visit (30+ min)148$12,897$87
Short return visit (20+ min)188$12,105$58
New patient visit (45+ min)42$5,767$137
Sleep study including heart rate, breathing, airflow, and effort30$4,865$147
Office for the evaluation and management of established patient that may not require presence of healthcare professional48$785$15

2014: 11 services

Original Medicare services billed in 2014
Sleep study in sleep lab with continuous airway pressure (6 years or older)113$63,771$540
Sleep study in sleep lab (6 years or older)97$50,680$517
Return visit (30+ min)374$42,962$79
Long return visit (40+ min)135$18,225$111
Short return visit (20+ min)180$10,708$53
New patient visit (30+ min)131$10,546$81
New patient visit (45+ min)23$3,035$132
New patient visit (15+ min)49$2,733$56
Sleep study including heart rate, breathing, airflow, and effort16$2,303$144
Return visit (30+ min)13$895$69
Office for the evaluation and management of established patient that may not require presence of healthcare professional30$548$15

2013: 10 services

Original Medicare services billed in 2013
Sleep study in sleep lab with continuous airway pressure (6 years or older)137$82,084$566
Return visit (30+ min)357$47,183$82
Sleep study in sleep lab (6 years or older)72$38,701$538
Short return visit (20+ min)210$13,435$56
Long return visit (40+ min)79$9,939$112
New patient visit (30+ min)71$5,918$83
New patient visit (45+ min)22$2,768$126
Return visit (30+ min)24$1,565$65
New patient visit (15+ min)13$782$60
Office for the evaluation and management of established patient that may not require presence of healthcare professional28$451$16

Medicaid work

$1,025 in 2023

Medicaid paid $1,025 for 12 billed services this clinician did in 2023, 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 2023
OFFICE/OP CONSLTJ NEW/EST PT LOW MDM 30 MINUTES12$1,025
Medicaid work by year
202312112$1,025
202112112$1,389
202013113$1,005
201967216$2,946
201812112$620
See the largest Medicaid services in earlier years

2021

Largest Medicaid services in 2021
Long return visit (40+ min)12$1,389

2020

Largest Medicaid services in 2020
Return visit (30+ min)13$1,005

2019

Largest Medicaid services in 2019
Long return visit (40+ min)55$2,606
Return visit (30+ min)12$340

2018

Largest Medicaid services in 2018
Return visit (30+ min)12$620

Drugs they prescribed that Part D paid

$2,237

Pharmacies billed $2,237 in 2024.

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

156 generic and 0 brand-name prescriptions · $2,237 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
Pramipexole Dihydrochloride35$541$15
Clonazepam41$503$12
Modafinil12$260$22
Trazodone13$170$13
Gabapentin23$163$7

Year by year

Part D prescribing by year
202415651None0%$2,237
202321156NoneNone$4,206
202218166NoneNone$5,953
2021209740% (0)None$4,373
2020159500% (0)0%$3,935
2019156680% (0)None$3,847
201827288NoneNone$7,205
2017340900% (0)None$8,782
2016396893% (11)9%$20,379
2015443106None10%$26,504
2014458112None9%$34,226
2013488118None24%$47,108

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

See the drugs prescribed each year

2023: 7 drugs

Part D drugs prescribed in 2023
Pramipexole Dihydrochloride55$868$16
Clonazepam47$608$13
Dextroamphetamine-Amphetamine11$598$54
Trazodone19$297$16
Gabapentin35$202$6
Modafinil11$185$17
Zolpidem16$166$10

2022: 5 drugs

Part D drugs prescribed in 2022
Pramipexole Dihydrochloride43$667$16
Clonazepam30$373$12
Dextroamphetamine-Amphetamine12$288$24
Gabapentin48$236$5
Zolpidem20$187$9

2021: 6 drugs

Part D drugs prescribed in 2021
Pramipexole Dihydrochloride50$750$15
Dextroamphetamine-Amphetamine17$592$35
Clonazepam35$499$14
Gabapentin33$272$8
Trazodone24$172$7
Zolpidem27$161$6

2020: 5 drugs

Part D drugs prescribed in 2020
Pramipexole Dihydrochloride66$1,346$20
Dextroamphetamine-Amphetamine17$539$32
Clonazepam28$273$10
Zolpidem11$54$5
Trazodone13$43$3

2019: 4 drugs

Part D drugs prescribed in 2019
Pramipexole Dihydrochloride68$1,187$17
Clonazepam21$261$12
Zolpidem23$200$9
Trazodone15$76$5

2018: 7 drugs

Part D drugs prescribed in 2018
Modafinil16$2,008$126
Pramipexole Dihydrochloride84$1,205$14
Clonazepam37$317$9
Zolpidem42$201$5
Trazodone18$163$9
Temazepam14$84$6
Gabapentin12$34$3

2017: 7 drugs

Part D drugs prescribed in 2017
Modafinil27$2,848$105
Pramipexole Dihydrochloride98$1,637$17
Dextroamphetamine-Amphetamine17$716$42
Zolpidem65$533$8
Clonazepam44$381$9
Trazodone33$236$7
Montelukast13$159$12

2016: 9 drugs

Part D drugs prescribed in 2016
Nuvigil13$8,028$618
Pramipexole Dihydrochloride113$1,994$18
Acetazolamide11$1,261$115
Dextroamphetamine-Amphet Er11$1,244$113
Zolpidem77$1,039$13
Dextroamphetamine-Amphetamine19$592$31
Temazepam22$524$24
Clonazepam36$354$10
Trazodone31$177$6

2015: 11 drugs

Part D drugs prescribed in 2015
Nuvigil18$10,170$565
Modafinil11$4,643$422
Pramipexole Dihydrochloride125$2,363$19
Dextroamphetamine-Amphet Er12$1,317$110
Zolpidem75$824$11
Dextroamphetamine-Amphetamine19$763$40
Temazepam29$659$23
Ipratropium25$607$24
Montelukast16$357$22
Clonazepam51$247$5
Fluticasone Propionate18$161$9

2014: 9 drugs

Part D drugs prescribed in 2014
Modafinil22$17,069$776
Pramipexole Dihydrochloride117$2,075$18
Dextroamphetamine-Amphet Er13$1,553$119
Temazepam31$1,284$41
Zolpidem127$877$7
Ipratropium36$819$23
Amphetamine Salt Combo13$648$50
Fluticasone Propionate13$337$26
Clonazepam26$140$5

2013: 13 drugs

Part D drugs prescribed in 2013
Modafinil14$12,623$902
Spiriva14$3,827$273
Lunesta13$3,811$293
Dextroamphetamine-Amphetamine17$3,418$201
Nasonex17$2,388$140
Zolpidem Tartrate Er14$1,876$134
Montelukast11$1,804$164
Pramipexole Dihydrochloride93$1,703$18
Zolpidem115$800$7
Ipratropium26$623$24
Fluticasone Propionate17$621$37
Temazepam16$530$33
Clonazepam32$250$8

Money from drug and device companies

$221 in 2025

Industry payments by year
2025110None$221
2024210None$340
202211None$45
202011None$45
201911None$24

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
Inspire Medical SystemsInspire$221
10 payments
  • Meals for Inspire · 2025-12-18 · $18
  • Meals for Inspire · 2025-10-09 · $13
  • Meals for Inspire · 2025-10-01 · $19
  • Meals for Inspire · 2025-08-29 · $19
  • Meals for Inspire · 2025-08-20 · $8
  • Meals for Inspire · 2025-08-20 · $16
  • Meals for Inspire · 2025-07-11 · $24
  • Meals for Inspire · 2025-07-01 · $29
  • Meals for Inspire · 2025-06-25 · $63
  • Meals for Inspire · 2025-04-29 · $11
See all 10 published payments
Every published payment
Inspire Medical SystemsMeals · 2025-12-18Inspire$18
Inspire Medical SystemsMeals · 2025-10-09Inspire$13
Inspire Medical SystemsMeals · 2025-10-01Inspire$19
Inspire Medical SystemsMeals · 2025-08-29Inspire$19
Inspire Medical SystemsMeals · 2025-08-20Inspire$8
Inspire Medical SystemsMeals · 2025-08-20Inspire$16
Inspire Medical SystemsMeals · 2025-07-11Inspire$24
Inspire Medical SystemsMeals · 2025-07-01Inspire$29
Inspire Medical SystemsMeals · 2025-06-25Inspire$63
Inspire Medical SystemsMeals · 2025-04-29Inspire$11
See earlier years (2024, 2022, 2020, 2019)

2024: $340

Payments by company in 2024
Inspire Medical SystemsInspire$248
9 payments
  • Meals for Inspire · 2024-11-20 · $11
  • Meals for Inspire · 2024-11-20 · $28
  • Meals for Inspire · 2024-08-27 · $6
  • Meals for Inspire · 2024-08-27 · $13
  • Meals for Inspire · 2024-08-07 · $7
  • Meals for Inspire · 2024-08-07 · $62
  • Meals for Inspire · 2024-07-30 · $4
  • Meals for Inspire · 2024-07-30 · $19
  • Meals for Inspire · 2024-06-12 · $98
Jazz PharmaceuticalsXywav$92
1 payment
  • Meals for Xywav · 2024-02-22 · $92

2022: $45

Payments by company in 2022
Harmony BiosciencesWakix$45
1 payment
  • Education for Wakix · 2022-05-23 · $45

2020: $45

Payments by company in 2020
Jazz PharmaceuticalsSunosi$45
1 payment
  • Meals for Sunosi · 2020-02-14 · $45

2019: $24

Payments by company in 2019
Sun Pharmaceutical IndustriesEzallor Sprinkle$24
1 payment
  • Meals for Ezallor Sprinkle · 2019-08-29 · $24

Professional record

NPI
1609856582
Licence
CA G62162California G62162: Current · expires 2027-04-30
Trained
Ponce School of Medicine, 1986
Video visits
Lists video visits
Gender
Male
More record details
Sole proprietor
No
Taxonomy
Federal specialty code 207RS0012X (207RS0012X)
Mailing address
2350 W El Camino Real Fl 2, Mountain View, CA, 94040
NPI first listed
2006-01-18
NPI last updated
2017-12-07

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