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Sharon A Chung, MD

Rheumatology · San Francisco

NPI 1649393737

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
9
1 carrier
Offices
3
Since medical school
25 years
Johns Hopkins University School of Medicine, 2001

Offices

3 locations · UCSF Medical Group Business Services · Regents of the University of California · University of California San Francisco

Looking this up.

Hospitals listed: UCSF Medical Center. That is not proof they admit you there this week.

Plans that list them

9 plans · 1 carrier

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

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

California Medical Board record

Licence A86647 · Current

Licensed to practise in California · since 2004 · expires 2028-04-30 · Johns Hopkins 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 - Rheumatology

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.

  • UCSF Medical CenterSan Francisco, CAAcute Care Hospital · Voluntary non-profit - Other · Has an emergency department · Birthing-friendlyPart of University of California Health, which runs 12 hospitalsHome of UCSF Helen Diller Family Comprehensive Cancer Center, a National Cancer Institute designated comprehensive cancer centrePatients rate it 4 of 5 · 81% would definitely recommend it
    Overall rating: 4 of 5 starsWorse than the national rate — Perioperative pulmonary embolism or deep vein thrombosis rate: 4.9 (3.79 to 6.02) · 7,590 cases, Jul 2022 – Jun 2024Worse than the national rate — Rate of inpatient admissions for patients receiving outpatient chemotherapy: 12.8 (11.3 to 14.4) · 2,019 cases, Jan 2024 – Dec 2024Better than the national rate — Death rate among surgical inpatients with serious treatable complications: 139.4 (110.22 to 168.58) · 452 cases, Jul 2022 – Jun 2024Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.622, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.626, Oct 2024 – Sep 2025Better than the national rate — MRSA Bacteremia: 0.491, Oct 2024 – Sep 2025Better than the national rate — Ratio of unplanned hospital visits after hospital outpatient surgery: 0.8 (0.7 to 1) · 2,336 cases, Jan 2024 – Dec 2024
See every measure and the patient survey for UCSF Medical Center

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: 3 better, 5 the same, 3 worse of 11 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.

Every scored measure at UCSF Medical Center
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths4.9 (3.79 to 6.02) · 7,590 casesWorseJul 2022 – Jun 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits12.8 (11.3 to 14.4) · 2,019 casesWorseJan 2024 – Dec 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths139.4 (110.22 to 168.58) · 452 casesBetterJul 2022 – Jun 2024
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.622BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.626BetterOct 2024 – Sep 2025
MRSA BacteremiaInfections0.491BetterOct 2024 – Sep 2025
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits0.8 (0.7 to 1) · 2,336 casesBetterJan 2024 – Dec 2024
Abdominopelvic accidental puncture or laceration rateComplications and deaths1.24 (0.58 to 1.9) · 4,689 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths1.05 (0.89 to 1.2)No differentJul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths1.9 · 89 casesNoneJul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths7.5 · 85 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths10.1 · 132 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths6.6 · 454 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths10.3 · 618 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths9.6 · 380 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths2.7 · 5,000 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.22 (0.06 to 0.38) · 15,965 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.2 (0.05 to 0.35) · 17,859 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths0.85 (0 to 1.83) · 4,184 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2 (1.1 to 2.9) · 6,516 casesNo differentJul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths7.35 (4.49 to 10.21) · 3,989 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths5 (3.22 to 6.77) · 4,087 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.95 (0.74 to 3.15) · 2,034 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.95 (0.63 to 1.28) · 15,431 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths4 · 399 casesNoneApr 2023 – Mar 2025
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.899No differentOct 2024 – Sep 2025
SSI - Abdominal HysterectomyInfections0.689No differentOct 2024 – Sep 2025
SSI - Colon SurgeryInfections1.224No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits16 · 156 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits20 · 564 casesNoneJul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits60.3 · 160 casesNoneJul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits-9.7 · 550 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits44.1 · 660 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits16.8 · 667 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits5.7 (4.8 to 6.7) · 2,019 casesNo differentJan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits6 · 421 casesNoneJul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits10.5 · 53 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits20 · 107 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits13.9 (11.3 to 17.1) · 3,247 casesNo differentJan 2022 – Dec 2024

What patients said (3,181 patients answered, 25% of those asked)

Patient survey stars by topic at UCSF Medical Center
Cleanliness4
Nurse communication4
Doctor communication4
Communication about medicines3
Discharge information4
Overall hospital rating4
Quietness2
Recommend hospital5
Share of patients giving the best answer at UCSF Medical Center
Room was "always" clean71%
Nurses "always" communicated well80%
Doctors "always" communicated well80%
Staff "always" explained61%
Yes, staff "did" give patients this information88%
Yes, staff "did" give patients information about help after discharge87%
Doctors "always" explained things so they could understand74%
Doctors "always" listened carefully78%
Doctors "always" treated them with courtesy and respect86%
Patients who gave a rating of "9" or "10" (high)76%
Staff "always" explained new medications75%
Nurses "always" explained things so they could understand77%
Nurses "always" listened carefully78%
Nurses "always" treated them with courtesy and respect86%
"Always" quiet at night50%
"YES", patients would definitely recommend the hospital81%
Staff "always" explained possible side effects46%
Yes, staff "did" give patients information about possible symptoms90%

Original Medicare doctor bills

$16,426

Medicare paid this office $16,426 for 51 people. Most of that is long return visits and Botox.

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

Largest Original Medicare bills
Long return visit (40+ min)39$10,962$123
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's44$1,479$14
Return visit (30+ min)14$1,302$72

Who their Medicare patients are

51 Original Medicare patients in 2024. Average age 75 · Women 69% · Health risk score 2.14. Sicker patients than 9 in 10 peers; the typical rheumatology clinician is at 1.38.

Conditions among them: High blood pressure 73% · Chronic kidney disease 47% · Diabetes 41% · COPD 35% · Atrial fibrillation 27% · Coronary heart disease 25%.

The office billed $103,391, Medicare allowed $21,791 and paid $16,426; for 252 services of 15 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
202451252752.14$103,391$16,426
202358158732.44$101,632$16,179
202252130741.67$82,296$13,431
202159154722.03$97,766$15,323
202056138722.24$79,212$10,780
201971133702.08$82,548$10,670
201848107731.79$67,813$7,997
20174894712.37$55,010$7,731
201648101701.75$59,277$8,171
20154994702.04$53,328$8,521
20143976691.70$46,696$6,257
20134291652.07$47,141$7,184

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: 3 services

Original Medicare services billed in 2023
Long return visit (40+ min)37$9,972$123
Return visit (30+ min)19$1,982$79
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes11$1,287$117

2022: 2 services

Original Medicare services billed in 2022
Long return visit (40+ min)41$9,622$123
Return visit (30+ min)17$1,407$78

2021: 2 services

Original Medicare services billed in 2021
Long return visit (40+ min)35$8,444$126
Return visit (30+ min)25$2,518$70

2020: 2 services

Original Medicare services billed in 2020
Return visit (30+ min)30$2,995$61
Long return visit (40+ min)22$2,889$93

2019: 3 services

Original Medicare services billed in 2019
Return visit (30+ min)33$3,520$64
Long return visit (40+ min)24$2,799$90
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes12$1,468$122

2018: 2 services

Original Medicare services billed in 2018
Long return visit (40+ min)20$3,331$93
Return visit (30+ min)29$2,850$54

2017: 2 services

Original Medicare services billed in 2017
Return visit (30+ min)21$2,561$62
Long return visit (40+ min)18$1,871$85

2016: 2 services

Original Medicare services billed in 2016
Long return visit (40+ min)15$2,394$96
Return visit (30+ min)23$2,333$56

2015: 1 service

Original Medicare services billed in 2015
Return visit (30+ min)22$2,470$71

2014: 2 services

Original Medicare services billed in 2014
Return visit (30+ min)22$2,092$60
Long return visit (40+ min)14$1,784$89

2013: 2 services

Original Medicare services billed in 2013
Return visit (30+ min)19$2,333$63
New patient visit (60+ min)12$1,627$136

Drugs they prescribed that Part D paid

$40,730

Pharmacies billed $40,730 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 182) in 2024. At or below the middle of the specialty; the typical rheumatology clinician is at 3%.

164 generic and fewer than 11 brand-name prescriptions · $40,730 in drug cost · 28 antibiotic prescriptions.

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
Cevimeline12$1,863$155
Prednisone77$1,038$13
Methotrexate11$691$63
Sulfamethoxazole-Trimethoprim28$547$20

Year by year

Part D prescribing by year
2024182350% (0)None$40,730
2023222330% (0)None$227,963
2022188340% (0)None$14,978
2021189330% (0)7%$51,526
2020140350% (0)None$26,913
2019189350% (0)None$12,898
2018211350% (0)None$17,690
2017171270% (0)6%$20,222
2016152230% (0)None$7,475
201513519None16%$21,302
201424223None15%$27,547
2013224185% (12)13%$38,966

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
Tavneos16$162,155$10,135
Actemra Actpen12$51,433$4,286
Cevimeline13$2,953$227
Prednisone107$2,234$21
Mycophenolate Mofetil11$1,173$107
Methotrexate18$880$49
Sulfamethoxazole-Trimethoprim27$762$28

2022: 4 drugs

Part D drugs prescribed in 2022
Prednisone73$1,893$26
Methotrexate19$1,105$58
Azathioprine12$897$75
Sulfamethoxazole-Trimethoprim21$570$27

2021: 4 drugs

Part D drugs prescribed in 2021
Prednisone95$1,798$19
Azathioprine18$1,398$78
Methotrexate14$741$53
Sulfamethoxazole-Trimethoprim11$179$16

2020: 4 drugs

Part D drugs prescribed in 2020
Azathioprine13$1,404$108
Prednisone66$1,088$16
Methotrexate15$1,037$69
Sulfamethoxazole-Trimethoprim12$297$25

2019: 4 drugs

Part D drugs prescribed in 2019
Azathioprine29$2,670$92
Methotrexate17$1,269$75
Prednisone85$1,226$14
Sulfamethoxazole-Trimethoprim16$334$21

2018: 4 drugs

Part D drugs prescribed in 2018
Methotrexate21$2,272$108
Azathioprine24$2,263$94
Prednisone102$1,362$13
Sulfamethoxazole-Trimethoprim24$453$19

2017: 4 drugs

Part D drugs prescribed in 2017
Azathioprine28$2,200$79
Methotrexate17$1,671$98
Prednisone66$1,005$15
Sulfamethoxazole-Trimethoprim21$446$21

2016: 5 drugs

Part D drugs prescribed in 2016
Dapsone12$2,315$193
Azathioprine23$1,874$81
Prednisone66$934$14
Sulfamethoxazole-Trimethoprim15$488$33
Methotrexate14$467$33

2015: 3 drugs

Part D drugs prescribed in 2015
Azathioprine30$1,800$60
Methotrexate11$906$82
Prednisone51$626$12

2014: 7 drugs

Part D drugs prescribed in 2014
Colcrys21$6,487$309
Azathioprine29$1,023$35
Prednisone67$662$10
Sulfamethoxazole-Trimethoprim22$431$20
Alendronate19$220$12
Lansoprazole11$218$20
Gabapentin11$93$8

2013: 7 drugs

Part D drugs prescribed in 2013
Cellcept11$28,010$2,546
Azathioprine29$1,064$37
Prednisone56$397$7
Lansoprazole13$321$25
Sulfamethoxazole-Trimethoprim19$283$15
Hydrocodone-Acetaminophen12$217$18
Alendronate13$128$10

Money from drug and device companies

$95 in 2025

A payment is not proof that care is biased.

Payments by company
Janssen BiotechTremfya$95
1 payment
  • Education for Tremfya · 2025-06-10 · $95
See the published payment
Every published payment
Janssen BiotechEducation · 2025-06-10Tremfya$95

Checkups this office reported

Medicare did not publish checkup rates for this clinician.

Medicare’s overall office score
74.5 / 100
Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.

Professional record

NPI
1649393737
Licence
CA A86647California A86647: Current · expires 2028-04-30
Trained
Johns Hopkins University School of Medicine, 2001 · 25 years ago
Group
UCSF Medical Group Business Services · Regents of the University of California · University of California San Francisco
Video visits
Lists video visits
Gender
Female
More record details
Sole proprietor
No
Taxonomy
Federal specialty code 207RR0500X (207RR0500X)
Mailing address
UCSF Box 0500, 374 Parnassus Ave. 1st Floor, San Francisco, CA, 94143
NPI first listed
2007-04-06
NPI last updated
2007-07-08

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