Grace Pyon, MD
General Surgery · Burlingame
- 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
- 8
Offices
8 locations · Sutter Bay Medical Foundation · County of San Mateo
Looking this up.
Hospitals listed: Mills-Peninsula Medical Center · San Mateo Medical Center. 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. Pyon’s office to ask if they take your plan before you enroll.
Hospitals they work in
2 hospitals
These rate the hospital, not this clinician. Most measures at most hospitals are no different from the national rate.
- Peninsula Medical CenterBurlingame, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency department · Birthing-friendlyPart of Sutter Health, which runs 27 hospitals in 2 statesPatients rate it 4 of 5 · 78% would definitely recommend itOverall rating: 5 of 5 starsBetter than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.139, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.242, Oct 2024 – Sep 2025
- San Mateo Medical CenterSan Mateo, CAAcute Care Hospital · Government - Local · Has an emergency departmentPart of San Mateo County HealthPatients rate it 3 of 5 · 68% would definitely recommend itNo overall ratingNo measure marked better or worse than the national rate
See every measure and the patient survey for Peninsula Medical Center
Behind the star rating — Deaths: 2 better, 6 the same, 0 worse of 8 measures. Safety: 2 better, 5 the same, 0 worse of 7 measures. Readmissions: 0 better, 10 the same, 1 worse of 11 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.
| Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections | 0.139 | Better | Oct 2024 – Sep 2025 |
| Clostridium Difficile (C.Diff)Infections | 0.242 | Better | Oct 2024 – Sep 2025 |
| Abdominopelvic accidental puncture or laceration rateComplications and deaths | 1.21 (0.27 to 2.15) · 1,258 cases | No different | Jul 2022 – Jun 2024 |
| CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths | 0.81 (0.51 to 1.1) | No different | Jul 2022 – Jun 2024 |
| Death rate among surgical inpatients with serious treatable complicationsComplications and deaths | 155.44 (112.67 to 198.21) · 90 cases | No different | Jul 2022 – Jun 2024 |
| Death rate for CABG surgery patientsComplications and deaths | 2.5 · 32 cases | None | Jul 2022 – Jun 2025 |
| Death rate for COPD patientsComplications and deaths | 7.1 · 82 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart attack patientsComplications and deaths | 10 · 188 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart failure patientsComplications and deaths | 9 · 473 cases | None | Jul 2022 – Jun 2025 |
| Death rate for pneumonia patientsComplications and deaths | 14.8 · 342 cases | None | Jul 2022 – Jun 2025 |
| Death rate for stroke patientsComplications and deaths | 9.4 · 485 cases | None | Jul 2023 – Jun 2025 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths | 2.9 · 3,730 cases | None | Jul 2024 – Jun 2025 |
| Iatrogenic pneumothorax rateComplications and deaths | 0.2 (0 to 0.4) · 6,904 cases | No different | Jul 2022 – Jun 2024 |
| In-hospital fall-associated fracture rateComplications and deaths | 0.21 (0.02 to 0.4) · 7,052 cases | No different | Jul 2022 – Jun 2024 |
| Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths | 3.41 (1.43 to 5.39) · 1,695 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative acute kidney injury requiring dialysis rateComplications and deaths | 1.72 (0.17 to 3.28) · 665 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative hemorrhage or hematoma rateComplications and deaths | 2.11 (0.66 to 3.56) · 1,545 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative respiratory failure rateComplications and deaths | 7.1 (1.3 to 12.9) · 670 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative sepsis rateComplications and deaths | 5.96 (2.63 to 9.29) · 653 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative wound dehiscence rateComplications and deaths | 1.61 (0.15 to 3.08) · 418 cases | No different | Jul 2022 – Jun 2024 |
| Pressure ulcer rateComplications and deaths | 0.14 (0 to 0.78) · 5,539 cases | No different | Jul 2022 – Jun 2024 |
| Rate of complications for hip/knee replacement patientsComplications and deaths | 3.7 · 192 cases | None | Apr 2023 – Mar 2025 |
| Central Line Associated Bloodstream Infection (ICU + select Wards)Infections | 0.215 | No different | Oct 2024 – Sep 2025 |
| MRSA BacteremiaInfections | 0.263 | No different | Oct 2024 – Sep 2025 |
| SSI - Colon SurgeryInfections | 0.74 | No different | Oct 2024 – Sep 2025 |
| Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits | 14.3 · 300 cases | None | Jul 2023 – Jun 2025 |
| Heart failure (HF) 30-Day Readmission RateUnplanned return visits | 19 · 702 cases | None | Jul 2023 – Jun 2025 |
| Hospital return days for heart attack patientsUnplanned return visits | 1.2 · 207 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for heart failure patientsUnplanned return visits | -13.6 · 531 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for pneumonia patientsUnplanned return visits | 24.3 · 343 cases | None | Jul 2022 – Jun 2025 |
| Pneumonia (PN) 30-Day Readmission RateUnplanned return visits | 18.1 · 449 cases | None | Jul 2023 – Jun 2025 |
| Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits | 4.5 (2.8 to 7) · 85 cases | No different | Jan 2024 – Dec 2024 |
| Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits | 9.6 (6.7 to 13.7) · 85 cases | No different | Jan 2024 – Dec 2024 |
| Rate of readmission after hip/knee replacementUnplanned return visits | 5.7 · 189 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for CABGUnplanned return visits | 11 · 45 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits | 20.6 · 117 cases | None | Jul 2023 – Jun 2025 |
| Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits | 13 (9.7 to 17.2) · 584 cases | No different | Jan 2022 – Dec 2024 |
| Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits | 0.9 (0.7 to 1.2) · 764 cases | No different | Jan 2024 – Dec 2024 |
What patients said (523 patients answered, 27% of those asked)
| Cleanliness | 4 |
| Nurse communication | 4 |
| Doctor communication | 4 |
| Communication about medicines | 3 |
| Discharge information | 4 |
| Overall hospital rating | 4 |
| Quietness | 3 |
| Recommend hospital | 5 |
| Room was "always" clean | 76% |
| Nurses "always" communicated well | 81% |
| Doctors "always" communicated well | 80% |
| Staff "always" explained | 58% |
| Yes, staff "did" give patients this information | 89% |
| Yes, staff "did" give patients information about help after discharge | 87% |
| Doctors "always" explained things so they could understand | 74% |
| Doctors "always" listened carefully | 79% |
| Doctors "always" treated them with courtesy and respect | 87% |
| Patients who gave a rating of "9" or "10" (high) | 75% |
| Staff "always" explained new medications | 72% |
| 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 | 54% |
| "YES", patients would definitely recommend the hospital | 78% |
| Staff "always" explained possible side effects | 44% |
| Yes, staff "did" give patients information about possible symptoms | 90% |
See every measure and the patient survey for San Mateo Medical Center
Behind the star rating — Deaths: 0 better, 2 the same, 0 worse of 2 measures. Safety: 0 better, 2 the same, 0 worse of 2 measures. Readmissions: 0 better, 3 the same, 0 worse of 3 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.
| Abdominopelvic accidental puncture or laceration rateComplications and deaths | 1.34 (0.25 to 2.43) · 45 cases | No different | Jul 2022 – Jun 2024 |
| CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths | 0.97 (0.48 to 1.47) | No different | Jul 2022 – Jun 2024 |
| Death rate for pneumonia patientsComplications and deaths | 13.9 · 25 cases | None | Jul 2022 – Jun 2025 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths | 3.6 · 258 cases | None | Jul 2024 – Jun 2025 |
| Iatrogenic pneumothorax rateComplications and deaths | 0.21 (0 to 0.44) · 379 cases | No different | Jul 2022 – Jun 2024 |
| In-hospital fall-associated fracture rateComplications and deaths | 0.26 (0.05 to 0.48) · 381 cases | No different | Jul 2022 – Jun 2024 |
| Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths | 3.44 (0.82 to 6.05) · 57 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative hemorrhage or hematoma rateComplications and deaths | 2.64 (0.92 to 4.37) · 57 cases | No different | Jul 2022 – Jun 2024 |
| Pressure ulcer rateComplications and deaths | 0.53 (0 to 1.76) · 296 cases | No different | Jul 2022 – Jun 2024 |
| Clostridium Difficile (C.Diff)Infections | 0.661 | No different | Oct 2024 – Sep 2025 |
| Heart failure (HF) 30-Day Readmission RateUnplanned return visits | 21.8 · 47 cases | None | Jul 2023 – Jun 2025 |
| Hospital return days for pneumonia patientsUnplanned return visits | -2.3 · 25 cases | None | Jul 2022 – Jun 2025 |
| Pneumonia (PN) 30-Day Readmission RateUnplanned return visits | 16.6 · 76 cases | None | Jul 2023 – Jun 2025 |
| Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits | 14 (10.4 to 18.9) · 167 cases | No different | Jan 2022 – Dec 2024 |
What patients said (208 patients answered, 15% of those asked)
| Cleanliness | 4 |
| Nurse communication | 3 |
| Doctor communication | 3 |
| Communication about medicines | 3 |
| Discharge information | 4 |
| Overall hospital rating | 3 |
| Quietness | 2 |
| Recommend hospital | 3 |
| Room was "always" clean | 78% |
| Nurses "always" communicated well | 76% |
| Doctors "always" communicated well | 79% |
| Staff "always" explained | 62% |
| Yes, staff "did" give patients this information | 87% |
| Yes, staff "did" give patients information about help after discharge | 88% |
| Doctors "always" explained things so they could understand | 74% |
| Doctors "always" listened carefully | 77% |
| Doctors "always" treated them with courtesy and respect | 84% |
| Patients who gave a rating of "9" or "10" (high) | 70% |
| Staff "always" explained new medications | 72% |
| Nurses "always" explained things so they could understand | 72% |
| Nurses "always" listened carefully | 73% |
| Nurses "always" treated them with courtesy and respect | 82% |
| "Always" quiet at night | 47% |
| "YES", patients would definitely recommend the hospital | 68% |
| Staff "always" explained possible side effects | 51% |
| Yes, staff "did" give patients information about possible symptoms | 86% |
Original Medicare doctor bills
$9,436
Medicare paid this office $9,436 for 27 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
Procedures Medicare counted
| Colonoscopy | 1-10 | None |
| Hernia repair - groin (open) | 1-10 | None |
| Hernia repair (minimally invasive) | 11 | More than 73% of doctors who do this |
| Removal of tissue | 12 | More than 63% of doctors who do this |
Who their Medicare patients are
27 Original Medicare patients in 2024. Average age 76 · Women 56% · Health risk score 1.20. At or below the middle of the specialty; the typical general surgery clinician is at 1.69.
Conditions among them: High blood pressure 75%.
The office billed $39,090, Medicare allowed $11,844 and paid $9,436; for 47 services of 20 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.
Drugs they prescribed that Part D paid
$341
Pharmacies billed $341 in 2024.
This is pharmacy cost, not the office bill, and not what patients paid.
Opioids were 40% of their Part D prescriptions (19 of 48) in 2024. Too few prescriptions to compare fairly with other clinicians.
48 generic and 0 brand-name prescriptions · $341 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.
| Ibuprofen | 16 | $54 | $3 |
| Oxycodone | 18 | $47 | $3 |
Year by year
| 2024 | 48 | 26 | 40% (19) | 0% | $341 |
| 2023 | 39 | 20 | 28% (11) | 0% | $706 |
| 2022 | 27 | 17 | 41% (11) | 0% | $414 |
| 2021 | 14 | 11 | None | 0% | $94 |
| 2019 | 38 | 18 | 34% (13) | None | $905 |
| 2018 | 22 | None | 50% (11) | None | $1,015 |
Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.
Money from drug and device companies
$1,171 in 2025
| 2025 | 3 | 4 | None | $1,171 |
| 2024 | 3 | 3 | None | $240 |
| 2019 | 1 | 1 | None | $122 |
Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.
A payment is not proof that care is biased.
| Intuitive Surgical | Davinci Xi | $1,028 | 2 payments
|
| Davol | Phasix Mesh | $112 | 1 payment
|
| MIMEDX Group | None | $30 | 1 payment
|
See all 4 published payments
| Davol | Meals · 2025-09-11 | Phasix Mesh | $112 |
| MIMEDX Group | Meals · 2025-08-25 | None | $30 |
| Intuitive Surgical | Meals · 2025-04-16 | Da Vinci Surgical System | $28 |
| Intuitive Surgical | Education · 2025-04-16 | Davinci Xi | $1,000 |
See earlier years (2024, 2019)
2024: $240
| W. L. Gore & Associates | Gore Excluder Iliac Branch Endoprosthesis | $174 | 1 payment
|
| Teleflex | Solesta | $38 | 1 payment
|
| Intuitive Surgical | Da Vinci Surgical System | $28 | 1 payment
|
2019: $122
| Pacira Pharmaceuticals | Exparel | $122 | 1 payment
|
Professional record
- NPI
- 1104322726
- Group
- Sutter Bay Medical Foundation · County of San Mateo
- Video visits
- Lists video visits
- Gender
- Female
More record details
- Sole proprietor
- No
- Taxonomy
- Surgery (208600000X)
- Mailing address
- Po Box 276950, Sacramento, CA, 95827
- NPI first listed
- 2018-04-03
- NPI last updated
- 2024-11-21
- NPI record certified
- 2024-11-21
This is when the NPI record was last certified, not a medical board exam.
Extra NPI addresses: 222 W 39th Ave, San Mateo, CA, 94403