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Derrick D Lung, MD

Emergency Medicine · San Mateo

NPI 1821259342

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
Not verified
Not the same as out of network.
Office
1

Offices

1 location · Cep America - California · 1,278 clinicians in this group

Looking this up.

Hospitals listed: 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. Lung’s office at (650) 573-2222 to ask if they take your plan before you enroll.

California Medical Board record

Licence A107783 · Current

Licensed to practise in California · since 2009 · expires 2028-07-31 · Medical College of Ohio.

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.

  • 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 it
    No overall ratingNo measure marked better or worse than the national rate
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.

Every scored measure at San Mateo Medical Center
Abdominopelvic accidental puncture or laceration rateComplications and deaths1.34 (0.25 to 2.43) · 45 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths0.97 (0.48 to 1.47)No differentJul 2022 – Jun 2024
Death rate for pneumonia patientsComplications and deaths13.9 · 25 casesNoneJul 2022 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths3.6 · 258 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.21 (0 to 0.44) · 379 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.26 (0.05 to 0.48) · 381 casesNo differentJul 2022 – Jun 2024
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths3.44 (0.82 to 6.05) · 57 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2.64 (0.92 to 4.37) · 57 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.53 (0 to 1.76) · 296 casesNo differentJul 2022 – Jun 2024
Clostridium Difficile (C.Diff)Infections0.661No differentOct 2024 – Sep 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits21.8 · 47 casesNoneJul 2023 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits-2.3 · 25 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits16.6 · 76 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits14 (10.4 to 18.9) · 167 casesNo differentJan 2022 – Dec 2024

What patients said (208 patients answered, 15% of those asked)

Patient survey stars by topic at San Mateo Medical Center
Cleanliness4
Nurse communication3
Doctor communication3
Communication about medicines3
Discharge information4
Overall hospital rating3
Quietness2
Recommend hospital3
Share of patients giving the best answer at San Mateo Medical Center
Room was "always" clean78%
Nurses "always" communicated well76%
Doctors "always" communicated well79%
Staff "always" explained62%
Yes, staff "did" give patients this information87%
Yes, staff "did" give patients information about help after discharge88%
Doctors "always" explained things so they could understand74%
Doctors "always" listened carefully77%
Doctors "always" treated them with courtesy and respect84%
Patients who gave a rating of "9" or "10" (high)70%
Staff "always" explained new medications72%
Nurses "always" explained things so they could understand72%
Nurses "always" listened carefully73%
Nurses "always" treated them with courtesy and respect82%
"Always" quiet at night47%
"YES", patients would definitely recommend the hospital68%
Staff "always" explained possible side effects51%
Yes, staff "did" give patients information about possible symptoms86%

Original Medicare doctor bills

$14,914

Medicare paid this office $14,914 for 114 people.

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

Largest Original Medicare bills
Emergency department visit with moderate level of medical decision making66$7,384$107
Emergency department visit with high level of medical decision making29$4,542$157

Procedures Medicare counted

Procedure volume Medicare published
Removal of nail tissue1-10None

Who their Medicare patients are

114 Original Medicare patients in 2024. Average age 69 · Under 65 21% · 85 and older 11% · Women 43% · Also on Medicaid 83% · Health risk score 1.61. At or below the middle of the specialty; the typical emergency medicine clinician is at 2.01.

Conditions among them: High blood pressure 70% · Diabetes 32% · Depression 25% · Dementia 19% · Chronic kidney disease 18% · Coronary heart disease 16% · Heart failure 16% · Cancer 14% · COPD 14% · Atrial fibrillation 11%.

The office billed $117,692, Medicare allowed $18,689 and paid $14,914; for 138 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
2024114138691.61$117,692$14,914
202398120681.49$98,868$11,758
202292126671.44$83,377$11,554
202181107651.70$75,167$10,342
202080120681.86$71,495$10,033
2019156219691.71$116,219$17,553
2018140193671.95$84,919$19,150
2017147222652.11$78,693$22,062
2016188285641.83$101,008$21,338
2015342458652.00$233,643$43,337
2014370479641.96$281,931$52,096
2013370484641.92$309,688$55,482

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: 2 services

Original Medicare services billed in 2023
Emergency department visit with moderate level of medical decision making54$5,523$95
Emergency department visit with high level of medical decision making26$3,494$134

2022: 4 services

Original Medicare services billed in 2022
Emergency department visit with high level of medical decision making27$4,376$162
Emergency department visit with moderate level of medical decision making30$2,932$98
Emergency department visit with low level of medical decision making28$1,617$58
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only11$74$6

2021: 4 services

Original Medicare services billed in 2021
Emergency department visit with high level of medical decision making25$3,704$142
Emergency department visit with moderate level of medical decision making32$3,125$95
Emergency department visit with low level of medical decision making15$826$55
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only12$83$7

2020: 5 services

Original Medicare services billed in 2020
Emergency department visit with high level of medical decision making23$2,953$128
Emergency department visit with moderate level of medical decision making24$2,699$104
Critical care, first 30-74 minutes11$2,016$183
Emergency department visit with low level of medical decision making21$1,308$52
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only14$100$7

2019: 5 services

Original Medicare services billed in 2019
Emergency department visit with high level of medical decision making50$7,021$140
Emergency department visit with low level of medical decision making55$3,438$51
Emergency department visit with moderate level of medical decision making34$3,313$97
Critical care, first 30-74 minutes12$2,353$196
X-ray of chest, 2 views15$149$10

2018: 6 services

Original Medicare services billed in 2018
Emergency department visit with high level of medical decision making51$8,631$166
Emergency department visit with moderate level of medical decision making32$3,632$110
Emergency department visit with low level of medical decision making40$2,620$57
Critical care, first 30-74 minutes11$2,419$220
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only14$111$8
X-ray of chest, 1 view11$102$9

2017: 5 services

Original Medicare services billed in 2017
Emergency department visit with high level of medical decision making50$9,292$186
Emergency department visit with moderate level of medical decision making34$4,510$129
Emergency department visit with low level of medical decision making43$2,969$65
X-ray of chest, 2 views, front and side17$244$14
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only19$199$10

2016: 6 services

Original Medicare services billed in 2016
Emergency department visit with high level of medical decision making57$9,052$146
Emergency department visit with moderate level of medical decision making55$5,325$92
Critical care, first 30-74 minutes13$2,515$193
Emergency department visit with low level of medical decision making52$2,427$47
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only32$280$7
X-ray of chest, 2 views, front and side17$158$9

2015: 7 services

Original Medicare services billed in 2015
Emergency department visit with high level of medical decision making138$20,049$141
Emergency department visit with moderate level of medical decision making82$8,063$94
Critical care, first 30-74 minutes38$7,196$189
Emergency department visit with low level of medical decision making76$3,587$44
Emergency department visit with straightforward medical decision making13$358$28
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only23$213$8
X-ray of chest, 2 views, front and side12$129$10

2014: 4 services

Original Medicare services billed in 2014
Emergency department visit with high level of medical decision making133$19,507$146
Critical care, first 30-74 minutes57$11,273$194
Emergency department visit with moderate level of medical decision making98$9,652$92
Emergency department visit with low level of medical decision making80$4,071$48

2013: 5 services

Original Medicare services billed in 2013
Emergency department visit with high level of medical decision making140$20,477$141
Critical care, first 30-74 minutes62$11,819$191
Emergency department visit with moderate level of medical decision making90$8,425$93
Emergency department visit with low level of medical decision making68$3,181$46
Initial hospital observation care per day, typically 70 minutes17$2,762$153

Medicaid work

$209,579 in 2024

Medicaid paid $209,579 for 3,363 billed services this clinician did in 2024, up to 239 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 2024
EMERGENCY DEPT VISIT MOD MDM1,637$123,867
EMERGENCY DEPARTMENT VISIT HIGH MDM447$53,064
Service545$19,795
EMERGENCY DEPT VISIT LOW MDM64$3,232
Service331$2,435
Critical care, evaluation and management of the critically ill or critically injured patient; first 30-74 minutes16$2,247
Infectious agent detection by nucleic acid (DNA or RNA); severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (coronavirus disease [COVID-19]) and influenza virus types A and B, multiplex amplified probe technique15$2,139
COMPREHENSIVE METABOLIC PANEL75$825
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count) and automated differential WBC count94$752
Electrocardiogram, routine ECG with at least 12 leads; interpretation and report only46$622
Electrocardiogram, routine ECG with at least 12 leads; tracing only, without interpretation and report13$388
Urinalysis, by dip stick or tablet reagent for bilirubin, glucose, hemoglobin, ketones, leukocytes, nitrite, pH, protein, specific gravity, urobilinogen, any number of these constituents; automated, without microscopy65$132
Medicaid work by year
20243,36313239$209,579
20235,99816184$268,376
20223,42816117$160,030
20212,9941395$138,835
20202,3391395$110,400
20194,15115141$170,207
20185,00415163$188,615
See the largest Medicaid services in earlier years

2023

Largest Medicaid services in 2023
EMERGENCY DEPT VISIT MOD MDM1,815$127,644
EMERGENCY DEPARTMENT VISIT HIGH MDM436$44,916
Service1,082$40,024
Infectious agent detection by nucleic acid (DNA or RNA); severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (coronavirus disease [COVID-19]) and influenza virus types A and B, multiplex amplified probe technique135$19,255
EMERGENCY DEPT VISIT LOW MDM158$8,290
Critical care, evaluation and management of the critically ill or critically injured patient; first 30-74 minutes44$5,805
Service759$5,677
COMPREHENSIVE METABOLIC PANEL297$4,164
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count) and automated differential WBC count312$3,215
Electrocardiogram, routine ECG with at least 12 leads; tracing only, without interpretation and report110$2,566
Electrocardiogram, routine ECG with at least 12 leads; interpretation and report only141$2,047
URINE PREGNANCY TEST172$1,981

2022

Largest Medicaid services in 2022
EMERGENCY DEPT VISIT LOW MDM1,005$61,173
EMERGENCY DEPT VISIT MOD MDM688$43,815
EMERGENCY DEPARTMENT VISIT HIGH MDM304$21,991
Service481$17,765
Infectious agent detection by nucleic acid (DNA or RNA); severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (coronavirus disease [COVID-19]) and influenza virus types A and B, multiplex amplified probe technique32$4,564
Critical care, evaluation and management of the critically ill or critically injured patient; first 30-74 minutes26$2,505
Service294$1,959
COMPREHENSIVE METABOLIC PANEL128$1,536
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count) and automated differential WBC count161$1,455
Drug test(s), presumptive, any number of drug classes, any number of devices or procedures; by instrument chemistry analyzers (eg, utilizing immunoassay [eg, EIA, ELISA, EMIT, FPIA, IA, KIMS, RIA]), chromatography (eg, GC, HPLC), and mass spectrometry either with or without chromatography, (eg, DART, DESI, GC-MS, GC-MS/MS, LC-MS, LC-MS/MS, LDTD, MALDI, TOF) includes sample validation when performed, per date of service24$1,241
URINE PREGNANCY TEST44$509
Injection, ketorolac tromethamine, per 15 mg78$441

2021

Largest Medicaid services in 2021
EMERGENCY DEPT VISIT LOW MDM759$42,710
EMERGENCY DEPT VISIT MOD MDM613$39,196
Service595$21,917
EMERGENCY DEPARTMENT VISIT HIGH MDM268$20,794
Infectious agent detection by nucleic acid (DNA or RNA); severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (coronavirus disease [COVID-19]) and influenza virus types A and B, multiplex amplified probe technique59$8,273
Service354$2,748
COMPREHENSIVE METABOLIC PANEL92$1,074
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count) and automated differential WBC count97$838
Electrocardiogram, routine ECG with at least 12 leads; interpretation and report only29$384
Electrocardiogram, routine ECG with at least 12 leads; tracing only, without interpretation and report12$358
Injection, ketorolac tromethamine, per 15 mg63$336
Urinalysis, by dip stick or tablet reagent for bilirubin, glucose, hemoglobin, ketones, leukocytes, nitrite, pH, protein, specific gravity, urobilinogen, any number of these constituents; automated, without microscopy40$105

2020

Largest Medicaid services in 2020
EMERGENCY DEPT VISIT LOW MDM650$35,963
EMERGENCY DEPT VISIT MOD MDM468$28,858
Service498$18,785
EMERGENCY DEPARTMENT VISIT HIGH MDM192$13,400
Critical care, evaluation and management of the critically ill or critically injured patient; first 30-74 minutes93$8,546
Service276$2,231
Infectious agent detection by nucleic acid (DNA or RNA); influenza virus, for multiple types or sub-types, includes multiplex reverse transcription, when performed, and multiplex amplified probe technique, first 2 types or sub-types18$1,380
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count) and automated differential WBC count55$478
Electrocardiogram, routine ECG with at least 12 leads; interpretation and report only28$367
COMPREHENSIVE METABOLIC PANEL14$168
Radiologic examination, chest; single view13$91
Injection, ketorolac tromethamine, per 15 mg16$88

2019

Largest Medicaid services in 2019
EMERGENCY DEPT VISIT LOW MDM1,160$63,144
EMERGENCY DEPT VISIT MOD MDM679$40,415
Service867$32,308
EMERGENCY DEPARTMENT VISIT HIGH MDM345$23,012
Service499$4,465
Therapeutic, prophylactic, or diagnostic injection (specify substance or drug); intravenous push, single or initial substance/drug25$1,566
Electrocardiogram, routine ECG with at least 12 leads; interpretation and report only67$1,254
COMPREHENSIVE METABOLIC PANEL93$1,090
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count) and automated differential WBC count125$1,085
Injection, ketorolac tromethamine, per 15 mg74$428
Radiologic examination, chest; 2 views29$389
Electrocardiogram, routine ECG with at least 12 leads; tracing only, without interpretation and report12$358

2018

Largest Medicaid services in 2018
EMERGENCY DEPT VISIT LOW MDM1,280$70,456
EMERGENCY DEPT VISIT MOD MDM594$36,262
Service946$35,032
EMERGENCY DEPARTMENT VISIT HIGH MDM401$30,314
Service695$6,805
Electrocardiogram, routine ECG with at least 12 leads; interpretation and report only143$2,329
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count) and automated differential WBC count242$2,062
COMPREHENSIVE METABOLIC PANEL147$1,712
Electrocardiogram, routine ECG with at least 12 leads; tracing only, without interpretation and report30$865
Injection, ketorolac tromethamine, per 15 mg154$790
Radiologic examination, chest; 2 views63$675
URINE PREGNANCY TEST91$499

Drugs they prescribed that Part D paid

$3,643

Pharmacies billed $3,643 in 2024.

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

164 generic and 18 brand-name prescriptions · $3,643 in drug cost · 32 antibiotic prescriptions to 26 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.

Largest Part D drug costs
Albuterol Sulfate Hfa15$487$32
Ondansetron Odt12$240$20
Ibuprofen35$117$3

Year by year

Part D prescribing by year
202418295None10%$3,643
202310866NoneNone$2,186
20228858NoneNone$1,229
20218144NoneNone$4,505
20205636NoneNone$1,050
201910270None11%$1,152
20188755NoneNone$1,701
20171087615% (16)13%$1,445
201612273None11%$2,193
20151006615% (15)None$1,067
2014845321% (18)None$955
2013775434% (26)None$2,067

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

See the drugs prescribed each year

2023: 2 drugs

Part D drugs prescribed in 2023
Ondansetron Odt13$187$14
Ibuprofen23$96$4

2022: 1 drug

Part D drugs prescribed in 2022
Ibuprofen27$122$5

2021: 1 drug

Part D drugs prescribed in 2021
Ibuprofen16$91$6

2020: 1 drug

Part D drugs prescribed in 2020
Ibuprofen13$62$5

2019: 1 drug

Part D drugs prescribed in 2019
Ibuprofen19$67$4

2017: 1 drug

Part D drugs prescribed in 2017
Oxycodone-Acetaminophen15$87$6

2016: 1 drug

Part D drugs prescribed in 2016
Ibuprofen27$103$4

2015: 2 drugs

Part D drugs prescribed in 2015
Ibuprofen22$95$4
Oxycodone-Acetaminophen11$59$5

2014: 1 drug

Part D drugs prescribed in 2014
Oxycodone-Acetaminophen15$102$7

2013: 1 drug

Part D drugs prescribed in 2013
Oxycodone-Acetaminophen22$85$4

Money from drug and device companies

$247 in 2019

A payment is not proof that care is biased.

Payments by company
GlaxoSmithKlineBexsero$247
2 payments
  • Meals for Bexsero · 2019-11-14 · $124
  • Meals for Bexsero · 2019-03-27 · $123
See all 2 published payments
Every published payment
GlaxoSmithKlineMeals · 2019-11-14Bexsero$124
GlaxoSmithKlineMeals · 2019-03-27Bexsero$123

Checkups this office reported

Medicare did not publish checkup rates for this clinician.

Medicare’s overall office score
94.6 / 100
Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.

Professional record

NPI
1821259342
Licence
CA A107783California A107783: Current · expires 2028-07-31
Gender
Male
More record details
Sole proprietor
No
Taxonomy
Federal specialty code 207P00000X (207P00000X)
Mailing address
2100 Powell St, Ste 900, Emeryville, CA, 94608
NPI first listed
2008-06-18
NPI last updated
2016-06-30

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