Gary K Roberts, DDS

Offices

1 location · Stanford Health Care · 3,152 clinicians in this group

Looking this up.

Hospitals listed: Stanford Health Care. That is not proof they admit you there this week.

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. Roberts’s office at (650) 723-4000 to ask if they take your plan before you enroll.

California Medical Board record

Licence C37762 · Cancelled

Licence status: Cancelled · since 1977 · National Autonomous University of Mexico Faculty of Medicine.

License has been voluntarily canceled, or the license has been expired for at least five years and has not been renewed. No practice is permitted.

Matched on the licence number without its letter prefix; check the name before relying on it.

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

Hospitals they work in

1 hospital

These rate the hospital, not this clinician. Most measures at most hospitals are no different from the national rate.

Stanford Health CareStanford, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency departmentPart of Stanford Health Care, which runs 3 hospitalsHome of Stanford Cancer Institute, a National Cancer Institute designated comprehensive cancer centrePatients rate it 4 of 5 · 83% would definitely recommend it
Overall rating: 5 of 5 starsWorse than the national rate — Perioperative pulmonary embolism or deep vein thrombosis rate: 5.31 (4.24 to 6.37) · 8,661 cases, Jul 2022 – Jun 2024Worse than the national rate — Rate of inpatient admissions for patients receiving outpatient chemotherapy: 14.1 (12.7 to 15.7) · 2,191 cases, Jan 2024 – Dec 2024Better than the national rate — Postoperative respiratory failure rate: 4.08 (1.95 to 6.21) · 5,296 cases, Jul 2022 – Jun 2024Better than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.317, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.446, Oct 2024 – Sep 2025Better than the national rate — SSI - Colon Surgery: 0.241, Oct 2024 – Sep 2025Better than the national rate — Ratio of unplanned hospital visits after hospital outpatient surgery: 0.7 (0.6 to 0.9) · 3,348 cases, Jan 2024 – Dec 2024

See every measure and the patient survey for Stanford Health Care

Behind the star rating — Deaths: 5 better, 3 the same, 0 worse of 8 measures. Safety: 3 better, 5 the same, 0 worse of 8 measures. Readmissions: 2 better, 5 the same, 4 worse of 11 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.

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Every scored measure at Stanford Health Care

Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths	5.31 (4.24 to 6.37) · 8,661 cases	Worse	Jul 2022 – Jun 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits	14.1 (12.7 to 15.7) · 2,191 cases	Worse	Jan 2024 – Dec 2024
Postoperative respiratory failure rateComplications and deaths	4.08 (1.95 to 6.21) · 5,296 cases	Better	Jul 2022 – Jun 2024
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections	0.317	Better	Oct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections	0.446	Better	Oct 2024 – Sep 2025
SSI - Colon SurgeryInfections	0.241	Better	Oct 2024 – Sep 2025
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits	0.7 (0.6 to 0.9) · 3,348 cases	Better	Jan 2024 – Dec 2024
Abdominopelvic accidental puncture or laceration rateComplications and deaths	1.06 (0.45 to 1.67) · 5,374 cases	No different	Jul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths	0.86 (0.72 to 1)	No different	Jul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths	166.09 (137.88 to 194.3) · 470 cases	No different	Jul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths	1.1 · 192 cases	None	Jul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths	6.4 · 146 cases	None	Jul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths	9.7 · 253 cases	None	Jul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths	6.3 · 880 cases	None	Jul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths	10.3 · 935 cases	None	Jul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths	8.7 · 501 cases	None	Jul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths	2.1 · 7,730 cases	None	Jul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths	0.13 (0 to 0.27) · 20,799 cases	No different	Jul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths	0.28 (0.14 to 0.43) · 23,182 cases	No different	Jul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths	0.94 (0.2 to 1.68) · 5,694 cases	No different	Jul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths	2.36 (1.54 to 3.19) · 7,846 cases	No different	Jul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths	5.2 (3.76 to 6.64) · 5,603 cases	No different	Jul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths	1.38 (0.23 to 2.53) · 2,211 cases	No different	Jul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths	0.52 (0.21 to 0.83) · 19,915 cases	No different	Jul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths	3.6 · 416 cases	None	Apr 2023 – Mar 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections	0.869	No different	Oct 2024 – Sep 2025
MRSA BacteremiaInfections	0.857	No different	Oct 2024 – Sep 2025
SSI - Abdominal HysterectomyInfections	0.368	No different	Oct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits	16.2 · 247 cases	None	Jul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits	20.5 · 1,021 cases	None	Jul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits	47.8 · 258 cases	None	Jul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits	-1.6 · 990 cases	None	Jul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits	20.8 · 976 cases	None	Jul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits	16.5 · 959 cases	None	Jul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits	5.2 (4.4 to 6.2) · 2,191 cases	No different	Jan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits	5.1 · 425 cases	None	Jul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits	9.6 · 158 cases	None	Jul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits	19.6 · 183 cases	None	Jul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits	12.7 (10.4 to 15.4) · 4,578 cases	No different	Jan 2022 – Dec 2024

What patients said (6,810 patients answered, 25% of those asked)

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Patient survey stars by topic at Stanford Health Care

Cleanliness	4
Nurse communication	4
Doctor communication	4
Communication about medicines	3
Discharge information	4
Overall hospital rating	4
Quietness	2
Recommend hospital	5

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Share of patients giving the best answer at Stanford Health Care

Room was "always" clean	75%
Nurses "always" communicated well	82%
Doctors "always" communicated well	81%
Staff "always" explained	63%
Yes, staff "did" give patients this information	89%
Yes, staff "did" give patients information about help after discharge	89%
Doctors "always" explained things so they could understand	76%
Doctors "always" listened carefully	80%
Doctors "always" treated them with courtesy and respect	87%
Patients who gave a rating of "9" or "10" (high)	79%
Staff "always" explained new medications	76%
Nurses "always" explained things so they could understand	77%
Nurses "always" listened carefully	79%
Nurses "always" treated them with courtesy and respect	88%
"Always" quiet at night	53%
"YES", patients would definitely recommend the hospital	83%
Staff "always" explained possible side effects	50%
Yes, staff "did" give patients information about possible symptoms	90%

Original Medicare doctor bills

$28,495

Medicare paid this office $28,495 for 92 people.

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

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Largest Original Medicare bills

Return visit (30+ min)	19	$2,598	$108
New patient visit (45+ min)	18	$2,150	$119
Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes	16	$743	$44
Short return visit	11	$647	$54
X-ray of lower jaws, upper jaws and teeth	29	$355	$12

Who their Medicare patients are

92 Original Medicare patients in 2024. Average age 67 · Women 59% · Also on Medicaid 41% · Health risk score 2.00. Sicker patients than 9 in 10 peers; the typical unknown supplier/provider specialty clinician is at 1.05.

Conditions among them: High blood pressure 65% · Depression 38% · Diabetes 27% · Coronary heart disease 27% · Chronic kidney disease 23% · Stroke 20% · Heart failure 18% · Cancer 18% · COPD 16% · Atrial fibrillation 12%.

The office billed $245,709, Medicare allowed $37,207 and paid $28,495; for 2,056 services of 21 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

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Original Medicare by year

2024	92	2,056	67	2.00	$245,709	$28,495
2023	143	297	68	1.77	$339,229	$36,091
2022	116	204	67	1.95	$131,177	$21,090
2021	143	265	69	1.83	$149,610	$30,107
2020	134	261	69	1.66	$195,976	$27,116
2019	153	241	69	1.77	$100,264	$22,273
2018	92	132	68	1.77	$50,827	$13,625
2017	86	131	68	2.48	$48,714	$9,996
2016	58	110	67	1.72	$27,866	$8,730
2015	59	77	66	1.83	$27,788	$5,249
2014	30	62	68	1.35	$27,934	$6,600

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

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Original Medicare services billed in 2023

Return visit (30+ min)	33	$4,773	$114
Long return visit (40+ min)	20	$3,511	$167
New patient visit (45+ min)	16	$2,318	$145
Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes	27	$1,236	$44
Short return visit (20+ min)	12	$1,109	$85
Short return visit	12	$638	$49
Telehealth originating site facility fee	13	$314	$22
X-ray of lower jaws, upper jaws and teeth	21	$309	$15
X-ray of lower jaws, upper jaws and teeth	28	$259	$9

2022: 6 services

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Original Medicare services billed in 2022

Return visit (30+ min)	44	$4,442	$85
New patient visit (45+ min)	21	$2,412	$115
Long return visit (40+ min)	14	$1,816	$121
New patient visit (30+ min)	14	$978	$70
Short return visit (20+ min)	14	$884	$59
Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes	15	$517	$34

2021: 7 services

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Original Medicare services billed in 2021

Return visit (30+ min)	38	$4,749	$90
New patient visit (45+ min)	34	$4,200	$124
New patient visit (60+ min)	21	$3,374	$161
Long return visit (40+ min)	24	$3,246	$112
Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes	13	$490	$35
Ct scan of face without contrast	13	$421	$32
X-ray of lower jaws, upper jaws and teeth	17	$165	$10

2020: 6 services

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Original Medicare services billed in 2020

Return visit (30+ min)	35	$2,913	$65
Long return visit (40+ min)	23	$2,591	$93
New patient visit (45+ min)	24	$2,276	$95
New patient visit (30+ min)	32	$1,819	$57
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes	11	$800	$67
X-ray of lower jaws, upper jaws and teeth	26	$228	$9

2019: 6 services

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Original Medicare services billed in 2019

Long return visit (40+ min)	22	$3,344	$98
Return visit (30+ min)	37	$3,253	$71
New patient visit (30+ min)	38	$2,567	$68
New patient visit (45+ min)	20	$2,298	$115
New patient visit (60+ min)	13	$1,951	$150
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes	15	$1,041	$65

2018: 6 services

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Original Medicare services billed in 2018

Long return visit (40+ min)	21	$2,294	$96
New patient visit (45+ min)	20	$2,106	$105
New patient visit (60+ min)	12	$1,806	$151
Return visit (30+ min)	14	$1,201	$71
New patient visit (30+ min)	13	$816	$63
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes	12	$784	$65

2017: 3 services

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Original Medicare services billed in 2017

Return visit (30+ min)	27	$2,681	$71
New patient visit (30+ min)	38	$2,444	$64
Short return visit (20+ min)	12	$639	$46

2016: 2 services

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Original Medicare services billed in 2016

New patient visit (30+ min)	30	$1,929	$64
Return visit (30+ min)	14	$1,569	$68

2015: 2 services

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Original Medicare services billed in 2015

New patient visit (30+ min)	29	$1,873	$65
Return visit (30+ min)	13	$1,194	$66

2014: 1 service

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Original Medicare services billed in 2014

New patient visit (30+ min)	12	$771	$64

Drugs they prescribed that Part D paid

$1,320

Pharmacies billed $1,320 in 2024.

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

Opioids were 10% of their Part D prescriptions (15 of 147) in 2024. Too few prescriptions to compare fairly with other clinicians.

146 generic and fewer than 11 brand-name prescriptions · $1,320 in drug cost · 38 antibiotic prescriptions to 35 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.

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Largest Part D drug costs

Chlorhexidine Gluconate	29	$267	$5
Oxycodone-Acetaminophen	13	$153	$12
Amoxicillin-Clavulanate Potass	15	$77	$5
Amoxicillin	13	$72	$6

Year by year

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Part D prescribing by year

2024	147	53	10% (15)	None	$1,320
2023	198	56	8% (16)	None	$3,005
2022	241	59	10% (23)	0%	$3,359
2021	146	55	11% (16)	None	$2,828
2020	128	54	None	None	$1,561
2019	134	45	11% (15)	None	$1,295
2018	69	38	16% (11)	0%	$1,015
2017	63	34	None	0%	$870
2016	45	25	29% (13)	0%	$466
2015	86	31	21% (18)	None	$923
2014	58	24	22% (13)	None	$806
2013	33	22	None	None	$487

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

See the drugs prescribed each year

2023: 5 drugs

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Part D drugs prescribed in 2023

Pentoxifylline	27	$1,005	$37
Chlorhexidine Gluconate	55	$371	$7
Amoxicillin-Clavulanate Potass	20	$217	$11
Lidocaine Hcl Viscous	11	$148	$13
Oxycodone-Acetaminophen	15	$110	$7

2022: 6 drugs

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Part D drugs prescribed in 2022

Pentoxifylline	25	$1,415	$57
Gabapentin	24	$422	$18
Chlorhexidine Gluconate	77	$421	$5
Amoxicillin-Clavulanate Potass	30	$247	$8
Lidocaine Hcl Viscous	14	$155	$11
Oxycodone-Acetaminophen	22	$128	$6

2021: 4 drugs

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Part D drugs prescribed in 2021

Gabapentin	25	$377	$15
Chlorhexidine Gluconate	38	$195	$5
Amoxicillin-Clavulanate Potass	20	$186	$9
Oxycodone-Acetaminophen	16	$94	$6

2020: 3 drugs

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Part D drugs prescribed in 2020

Amoxicillin-Clavulanate Potass	21	$187	$9
Paroex	28	$124	$4
Chlorhexidine Gluconate	16	$81	$5

2019: 4 drugs

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Part D drugs prescribed in 2019

Paroex	47	$194	$4
Amoxicillin-Clavulanate Potass	16	$164	$10
Clindamycin	15	$155	$10
Chlorhexidine Gluconate	16	$90	$6

2018: 2 drugs

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Part D drugs prescribed in 2018

Amoxicillin-Clavulanate Potass	12	$202	$17
Paroex	13	$53	$4

2017: 2 drugs

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Part D drugs prescribed in 2017

Pentoxifylline	12	$394	$33
Amoxicillin-Clavulanate Potass	12	$139	$12

2016: 1 drug

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Part D drugs prescribed in 2016

Amoxicillin-Clavulanate Potass	12	$146	$12

2015: 3 drugs

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Part D drugs prescribed in 2015

Amoxicillin-Clavulanate Potass	16	$236	$15
Clindamycin	14	$143	$10
Chlorhexidine Gluconate	12	$92	$8

2014: 1 drug

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Part D drugs prescribed in 2014

Chlorhexidine Gluconate	12	$74	$6

Money from drug and device companies

$323 in 2025

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Industry payments by year

2025	2	2	None	$323
2024	2	4	None	$344
2023	3	3	None	$223
2022	1	1	None	$14
2021	2	4	None	$247
2020	2	4	None	$162
2019	1	3	None	$241

Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.

A payment is not proof that care is biased.

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Payments by company

Ultradent Products	Opalescence	$290	1 payment Gift for Opalescence · 2025-10-15 · $290
Stryker	Na	$33	1 payment Meals for Na · 2025-08-05 · $33

See all 2 published payments

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Every published payment

Ultradent Products	Gift · 2025-10-15	Opalescence	$290
Stryker	Meals · 2025-08-05	Na	$33

See earlier years (2024, 2023, 2022, 2021, 2020, 2019)

2024: $344

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Payments by company in 2024

Ultradent Products	Opalescence	$300	2 payments Gift for Opalescence · 2024-10-23 · $187 Gift for Opalescence · 2024-04-08 · $113
Dentsply Sirona	Smartlite Focus	$43	2 payments Meals for Q-Mix · 2024-09-06 · $21 Meals for Smartlite Focus · 2024-03-19 · $22

2023: $223

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Payments by company in 2023

Ultradent Products	Opalescence	$113	1 payment Gift for Opalescence · 2023-06-12 · $113
Nobel Biocare USA	Nobelactive	$92	1 payment Meals for Nobelactive · 2023-10-30 · $92
Align Technology	Itero Element 5d Plus	$18	1 payment Meals for Itero Element 5d Plus · 2023-04-14 · $18

2022: $14

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Payments by company in 2022

Stryker	Na	$14	1 payment Meals for Na · 2022-07-18 · $14

2021: $247

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Payments by company in 2021

Nobel Biocare USA	Nobelactive	$233	3 payments Meals · 2021-07-14 · $116 Meals for Nobelactive · 2021-06-15 · $104 Meals for Nobelactive · 2021-01-29 · $13
Smith+Nephew	Stravix	$14	1 payment Meals for Stravix · 2021-01-12 · $14

2020: $162

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Payments by company in 2020

Smith+Nephew	Grafix Xc	$138	3 payments Meals for Stravix · 2020-12-10 · $4 Meals for Stravix · 2020-11-18 · $50 Meals for Grafix Xc · 2020-01-29 · $84
Stryker	Universal Mandible	$24	1 payment Meals for Universal Mandible · 2020-07-20 · $24

2019: $241

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Payments by company in 2019

Smith+Nephew	Stravix	$241	3 payments Meals for Stravix · 2019-06-25 · $71 Meals for Stravix · 2019-05-01 · $77 Meals for Stravix · 2019-04-22 · $93

Professional record

NPI: 1881887727
Licence: CA 37762California C37762: Cancelled
Group: Stanford Health Care
Gender: Male

More record details

Sole proprietor: No
Taxonomy: Federal specialty code 122300000X (122300000X); Federal specialty code 204E00000X (204E00000X)
Mailing address: 300 Pasteur Dr, Stanford, CA, 94305
NPI first listed: 2007-08-23
NPI last updated: 2024-04-27
NPI record certified: 2024-04-27

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

Extra NPI addresses: 750 Welch Rd Ste 118, Palo Alto, CA, 94304