Tom Whang, MD
Diagnostic Radiology · Antioch
- 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
- 5
Offices
5 locations · Permanente Medical Group Inc · 10,928 clinicians in this group
Looking this up.
Hospitals listed: Kaiser Foundation Hospital and Rehab Center · Kaiser Foundation Hospital - Vacaville. 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. Whang’s office to ask if they take your plan before you enroll.
California Medical Board record
Licence A85964 · Current
Licensed to practise in California · since 2004 · expires 2027-12-31 · University of California, Los Angeles School of Medicine.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
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.
- Kaiser Foundation Hospital - VacavilleVacaville, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency department · Birthing-friendlyPart of Kaiser Permanente, which runs 41 hospitals in 3 statesPatients rate it 4 of 5 · 74% would definitely recommend itOverall rating: 4 of 5 starsNo measure marked better or worse than the national rate
- Kaiser Foundation Hospital and Rehab CenterVallejo, CAAcute Care Hospital · Voluntary non-profit - Private · No emergency department · Birthing-friendlyPart of Kaiser Permanente, which runs 41 hospitals in 3 statesPatients rate it 4 of 5 · 74% would definitely recommend itOverall rating: 2 of 5 starsBetter than the national rate — Clostridium Difficile (C.Diff): 0.408, Oct 2024 – Sep 2025
See every measure and the patient survey for Kaiser Foundation Hospital - Vacaville
Behind the star rating — Deaths: 0 better, 1 the same, 0 worse of 1 measures. Safety: 0 better, 6 the same, 0 worse of 6 measures. Readmissions: 0 better, 1 the same, 0 worse of 1 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 | 1.03 (0 to 2.11) · 116 cases | No different | Jul 2022 – Jun 2024 |
| CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths | 0.92 (0.45 to 1.38) | No different | Jul 2022 – Jun 2024 |
| Death rate for stroke patientsComplications and deaths | 15.9 · 97 cases | None | Jul 2023 – Jun 2025 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths | 4.6 · 1,636 cases | None | Jul 2024 – Jun 2025 |
| Iatrogenic pneumothorax rateComplications and deaths | 0.2 (0 to 0.44) · 535 cases | No different | Jul 2022 – Jun 2024 |
| In-hospital fall-associated fracture rateComplications and deaths | 0.27 (0.05 to 0.48) · 517 cases | No different | Jul 2022 – Jun 2024 |
| Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths | 3.25 (0.7 to 5.8) · 152 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative acute kidney injury requiring dialysis rateComplications and deaths | 1.67 (0 to 3.4) · 47 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative hemorrhage or hematoma rateComplications and deaths | 2.55 (0.86 to 4.25) · 153 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative respiratory failure rateComplications and deaths | 8.91 (0 to 18.84) · 50 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative sepsis rateComplications and deaths | 5.15 (0.84 to 9.45) · 43 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative wound dehiscence rateComplications and deaths | 1.75 (0.22 to 3.28) · 30 cases | No different | Jul 2022 – Jun 2024 |
| Pressure ulcer rateComplications and deaths | 0.44 (0 to 1.57) · 508 cases | No different | Jul 2022 – Jun 2024 |
| Rate of complications for hip/knee replacement patientsComplications and deaths | 3.8 · 47 cases | None | Apr 2023 – Mar 2025 |
| Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections | 0.289 | No different | Oct 2024 – Sep 2025 |
| Central Line Associated Bloodstream Infection (ICU + select Wards)Infections | 0.451 | No different | Oct 2024 – Sep 2025 |
| Clostridium Difficile (C.Diff)Infections | 0.668 | No different | Oct 2024 – Sep 2025 |
| MRSA BacteremiaInfections | 0 | No different | Oct 2024 – Sep 2025 |
| SSI - Colon SurgeryInfections | 2.438 | No different | Oct 2024 – Sep 2025 |
| Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits | 14.6 · 28 cases | None | Jul 2023 – Jun 2025 |
| Heart failure (HF) 30-Day Readmission RateUnplanned return visits | 21 · 226 cases | None | Jul 2023 – Jun 2025 |
| Pneumonia (PN) 30-Day Readmission RateUnplanned return visits | 17.8 · 304 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission after hip/knee replacementUnplanned return visits | 6 · 48 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits | 19.7 · 78 cases | None | Jul 2023 – Jun 2025 |
What patients said (1,058 patients answered, 22% of those asked)
| Cleanliness | 4 |
| Nurse communication | 3 |
| Doctor communication | 4 |
| Communication about medicines | 3 |
| Discharge information | 4 |
| Overall hospital rating | 4 |
| Quietness | 3 |
| Recommend hospital | 4 |
| Room was "always" clean | 77% |
| Nurses "always" communicated well | 76% |
| Doctors "always" communicated well | 79% |
| Staff "always" explained | 60% |
| Yes, staff "did" give patients this information | 89% |
| Yes, staff "did" give patients information about help after discharge | 92% |
| Doctors "always" explained things so they could understand | 72% |
| Doctors "always" listened carefully | 79% |
| Doctors "always" treated them with courtesy and respect | 87% |
| Patients who gave a rating of "9" or "10" (high) | 74% |
| Staff "always" explained new medications | 73% |
| Nurses "always" explained things so they could understand | 72% |
| Nurses "always" listened carefully | 73% |
| Nurses "always" treated them with courtesy and respect | 84% |
| "Always" quiet at night | 51% |
| "YES", patients would definitely recommend the hospital | 74% |
| Staff "always" explained possible side effects | 46% |
| Yes, staff "did" give patients information about possible symptoms | 86% |
See every measure and the patient survey for Kaiser Foundation Hospital and Rehab Center
Behind the star rating — Deaths: 0 better, 3 the same, 0 worse of 3 measures. Safety: 1 better, 5 the same, 0 worse of 6 measures. Readmissions: 0 better, 2 the same, 0 worse of 2 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.
| Clostridium Difficile (C.Diff)Infections | 0.408 | Better | Oct 2024 – Sep 2025 |
| Abdominopelvic accidental puncture or laceration rateComplications and deaths | 1 (0 to 2.07) · 176 cases | No different | Jul 2022 – Jun 2024 |
| CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths | 0.97 (0.51 to 1.43) | No different | Jul 2022 – Jun 2024 |
| Death rate for heart attack patientsComplications and deaths | 12.6 · 29 cases | None | Jul 2022 – Jun 2025 |
| Death rate for pneumonia patientsComplications and deaths | 17.6 · 35 cases | None | Jul 2022 – Jun 2025 |
| Death rate for stroke patientsComplications and deaths | 14.1 · 138 cases | None | Jul 2023 – Jun 2025 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths | 4.5 · 1,910 cases | None | Jul 2024 – Jun 2025 |
| Iatrogenic pneumothorax rateComplications and deaths | 0.2 (0 to 0.43) · 941 cases | No different | Jul 2022 – Jun 2024 |
| In-hospital fall-associated fracture rateComplications and deaths | 0.26 (0.05 to 0.48) · 954 cases | No different | Jul 2022 – Jun 2024 |
| Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths | 4.2 (1.65 to 6.74) · 167 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative hemorrhage or hematoma rateComplications and deaths | 2.22 (0.53 to 3.92) · 163 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative respiratory failure rateComplications and deaths | 8.91 (0 to 18.84) · 26 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative wound dehiscence rateComplications and deaths | 1.75 (0.22 to 3.28) · 39 cases | No different | Jul 2022 – Jun 2024 |
| Pressure ulcer rateComplications and deaths | 0.41 (0 to 1.49) · 842 cases | No different | Jul 2022 – Jun 2024 |
| Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections | 0.401 | No different | Oct 2024 – Sep 2025 |
| Central Line Associated Bloodstream Infection (ICU + select Wards)Infections | 0.87 | No different | Oct 2024 – Sep 2025 |
| MRSA BacteremiaInfections | 0.401 | No different | Oct 2024 – Sep 2025 |
| SSI - Colon SurgeryInfections | 2.047 | No different | Oct 2024 – Sep 2025 |
| Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits | 13.3 · 203 cases | None | Jul 2023 – Jun 2025 |
| Heart failure (HF) 30-Day Readmission RateUnplanned return visits | 22.4 · 335 cases | None | Jul 2023 – Jun 2025 |
| Hospital return days for pneumonia patientsUnplanned return visits | 64.7 · 31 cases | None | Jul 2022 – Jun 2025 |
| Pneumonia (PN) 30-Day Readmission RateUnplanned return visits | 18.3 · 355 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits | 19.2 · 133 cases | None | Jul 2023 – Jun 2025 |
What patients said (1,137 patients answered, 21% of those asked)
| Cleanliness | 4 |
| Nurse communication | 3 |
| Doctor communication | 4 |
| Communication about medicines | 3 |
| Discharge information | 4 |
| Overall hospital rating | 4 |
| Quietness | 3 |
| Recommend hospital | 4 |
| Room was "always" clean | 71% |
| Nurses "always" communicated well | 77% |
| Doctors "always" communicated well | 80% |
| Staff "always" explained | 60% |
| Yes, staff "did" give patients this information | 88% |
| Yes, staff "did" give patients information about help after discharge | 90% |
| Doctors "always" explained things so they could understand | 77% |
| Doctors "always" listened carefully | 79% |
| Doctors "always" treated them with courtesy and respect | 86% |
| Patients who gave a rating of "9" or "10" (high) | 73% |
| Staff "always" explained new medications | 74% |
| Nurses "always" explained things so they could understand | 74% |
| Nurses "always" listened carefully | 73% |
| Nurses "always" treated them with courtesy and respect | 84% |
| "Always" quiet at night | 55% |
| "YES", patients would definitely recommend the hospital | 74% |
| Staff "always" explained possible side effects | 46% |
| Yes, staff "did" give patients information about possible symptoms | 87% |
Original Medicare doctor bills
$7,315
Medicare paid this office $7,315 for 239 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Ct scan of abdomen and pelvis with contrast | 15 | $915 | $57 |
| Ct scan head or brain without contrast | 35 | $889 | $25 |
| Ct scan of chest with contrast | 14 | $588 | $39 |
| X-ray of chest, 1 view | 60 | $414 | $6 |
| X-ray of chest, 2 views | 12 | $63 | $5 |
Who their Medicare patients are
239 Original Medicare patients in 2024. Average age 67 · Under 65 31% · 85 and older 8% · Women 52% · Also on Medicaid 50% · Health risk score 2.00. Above the middle of the specialty; the typical diagnostic radiology clinician is at 1.7.
Conditions among them: High blood pressure 74% · Diabetes 44% · Chronic kidney disease 34% · Coronary heart disease 26% · Heart failure 23% · Depression 22% · COPD 18% · Atrial fibrillation 18% · Stroke 18% · Dementia 15% · Cancer 10%.
The office billed $65,185, Medicare allowed $11,711 and paid $7,315; for 369 services of 55 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
| 2024 | 239 | 369 | 67 | 2.00 | $65,185 | $7,315 |
| 2023 | 267 | 400 | 68 | 1.87 | $64,404 | $7,637 |
| 2022 | 264 | 403 | 66 | 1.74 | $66,369 | $6,994 |
| 2021 | 230 | 409 | 67 | 1.93 | $55,213 | $6,865 |
| 2020 | 190 | 293 | 65 | 2.20 | $52,122 | $7,099 |
| 2019 | 213 | 310 | 66 | 2.52 | $41,909 | $6,295 |
| 2018 | 153 | 218 | 66 | 2.31 | $41,441 | $5,081 |
| 2017 | 207 | 319 | 66 | 2.29 | $47,523 | $6,239 |
| 2016 | 166 | 258 | 66 | 2.75 | $31,905 | $4,511 |
| 2015 | 161 | 229 | 67 | 2.36 | $37,619 | $4,036 |
| 2014 | 144 | 227 | 67 | 2.38 | $29,393 | $4,350 |
| 2013 | 102 | 131 | 64 | 2.37 | $23,743 | $3,566 |
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
| Ct scan of abdomen and pelvis with contrast | 17 | $1,039 | $61 |
| Ct scan head or brain without contrast | 31 | $881 | $28 |
| X-ray of chest, 1 view | 92 | $623 | $6 |
2022: 5 services
| Ct scan of abdomen and pelvis with contrast | 18 | $795 | $44 |
| Ct scan head or brain without contrast | 19 | $583 | $29 |
| Mri scan of arm joint without contrast | 11 | $427 | $39 |
| X-ray of chest, 1 view | 62 | $395 | $6 |
| X-ray of chest, 2 views | 12 | $72 | $6 |
2021: 4 services
| Ct scan head or brain without contrast | 31 | $1,129 | $33 |
| X-ray of chest, 1 view | 65 | $544 | $7 |
| X-ray of shoulder, minimum of 2 views | 11 | $217 | $9 |
| X-ray of chest, 2 views | 11 | $84 | $7 |
2020: 4 services
| Ct scan of abdomen and pelvis with contrast | 21 | $1,333 | $63 |
| Ct scan head or brain without contrast | 36 | $1,175 | $30 |
| Ct scan of chest with contrast | 12 | $420 | $35 |
| X-ray of chest, 1 view | 46 | $354 | $7 |
2019: 3 services
| Ct scan head or brain without contrast | 19 | $644 | $34 |
| X-ray of chest, 1 view | 40 | $311 | $7 |
| X-ray of chest, 2 views | 17 | $132 | $8 |
2018: 2 services
| Ct scan head or brain without contrast | 15 | $423 | $28 |
| X-ray of chest, 1 view | 23 | $153 | $7 |
2017: 4 services
| Ct scan head or brain without contrast | 29 | $988 | $33 |
| Mri scan of leg joint without contrast | 12 | $571 | $48 |
| X-ray of chest, 1 view, front | 50 | $337 | $6 |
| X-ray of chest, 2 views, front and side | 13 | $78 | $6 |
2016: 3 services
| Ct scan of abdomen and pelvis with contrast | 12 | $838 | $64 |
| X-ray of chest, 1 view, front | 45 | $362 | $6 |
| X-ray of chest, 2 views, front and side | 21 | $175 | $8 |
2015: 3 services
| Ct scan head or brain without contrast | 22 | $640 | $28 |
| X-ray of chest, 1 view, front | 39 | $264 | $6 |
| X-ray of chest, 2 views, front and side | 14 | $104 | $7 |
2014: 3 services
| Ct scan head or brain without contrast | 21 | $634 | $30 |
| X-ray of chest, 1 view, front | 30 | $247 | $7 |
| X-ray of chest, 2 views, front and side | 22 | $190 | $9 |
2013: 2 services
| Ct scan head or brain without contrast | 13 | $410 | $32 |
| X-ray of chest, 1 view, front | 23 | $166 | $7 |
Medicaid work
$56,251 in 2024
Medicaid paid $56,251 for 1,444 billed services this clinician did in 2024, up to 56 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.
| Magnetic resonance (eg, proton) imaging, any joint of lower extremity; without contrast material | 189 | $12,823 |
| CT ABDOMEN & PELVIS W/CONTRAST MATERIAL | 53 | $9,137 |
| Computed tomography, head or brain; without contrast material | 89 | $7,496 |
| Radiologic examination, chest; 2 views | 274 | $6,605 |
| Magnetic resonance (eg, proton) imaging, any joint of upper extremity; without contrast material(s) | 53 | $4,891 |
| X-RAY EXAM OF FOOT | 159 | $4,486 |
| Radiologic examination, chest; single view | 316 | $3,780 |
| X-RAY EXAM OF SHOULDER | 89 | $2,593 |
| X-ray of lumbosacral spine, anteroposterior and lateral views | 69 | $2,167 |
| Radiologic examination, knee; complete, 4 or more views | 37 | $603 |
| X-RAY EXAM OF HAND | 42 | $386 |
| Radiologic examination, hip, unilateral, with pelvis when performed; 2-3 views | 15 | $360 |
| 2024 | 1,444 | 16 | 56 | $56,251 |
| 2023 | 1,465 | 12 | 63 | $11,029 |
| 2022 | 1,316 | 16 | 62 | $5,649 |
| 2021 | 962 | 10 | 60 | $4,682 |
| 2020 | 431 | 5 | 36 | $1,940 |
| 2019 | 78 | 2 | 52 | $115 |
See the largest Medicaid services in earlier years
2023
| CT ABDOMEN & PELVIS W/CONTRAST MATERIAL | 65 | $4,042 |
| Computed tomography, head or brain; without contrast material | 98 | $2,009 |
| Radiologic examination, chest; single view | 423 | $1,366 |
| Magnetic resonance (eg, proton) imaging, any joint of lower extremity; without contrast material | 152 | $1,306 |
| Radiologic examination, chest; 2 views | 294 | $749 |
| DIAGNOSTIC COMPUTED TOMOGRAPHY THORAX W/CONTRAST | 25 | $577 |
| X-RAY EXAM OF FOOT | 166 | $358 |
| Magnetic resonance (eg, proton) imaging, any joint of upper extremity; without contrast material(s) | 118 | $250 |
| Radiologic examination, knee; complete, 4 or more views | 37 | $160 |
| X-RAY EXAM OF SHOULDER | 32 | $92 |
| X-RAY EXAM OF ANKLE | 38 | $84 |
| X-ray of lumbosacral spine, anteroposterior and lateral views | 17 | $35 |
2022
| Computed tomography, head or brain; without contrast material | 90 | $1,461 |
| CT ABDOMEN & PELVIS W/CONTRAST MATERIAL | 41 | $1,223 |
| Radiologic examination, chest; single view | 407 | $925 |
| Magnetic resonance (eg, proton) imaging, any joint of lower extremity; without contrast material | 165 | $831 |
| Radiologic examination, chest; 2 views | 283 | $492 |
| CT ABDOMEN & PELVIS W/O CONTRAST MATERIAL | 20 | $437 |
| X-RAY EXAM OF FOOT | 83 | $107 |
| X-RAY EXAM OF SHOULDER | 18 | $68 |
| Radiologic examination, knee; complete, 4 or more views | 46 | $45 |
| X-RAY EXAM OF HAND | 37 | $24 |
| ECHO EXAM OF ABDOMEN | 15 | $19 |
| X-ray of ankle, anteroposterior and lateral views | 33 | $12 |
2021
| CT ABDOMEN & PELVIS W/CONTRAST MATERIAL | 35 | $1,223 |
| Radiologic examination, chest; single view | 385 | $1,006 |
| Computed tomography, head or brain; without contrast material | 59 | $788 |
| Magnetic resonance (eg, proton) imaging, any joint of upper extremity; without contrast material(s) | 42 | $608 |
| Magnetic resonance (eg, proton) imaging, any joint of lower extremity; without contrast material | 91 | $545 |
| DIAGNOSTIC COMPUTED TOMOGRAPHY THORAX W/CONTRAST | 12 | $277 |
| Radiologic examination, chest; 2 views | 205 | $179 |
| X-RAY EXAM OF FOOT | 82 | $41 |
| X-RAY EXAM OF ANKLE | 34 | $9 |
| X-RAY EXAM OF HAND | 17 | $6 |
2020
| Computed tomography, head or brain; without contrast material | 62 | $847 |
| Radiologic examination, chest; single view | 245 | $610 |
| CT ABDOMEN & PELVIS W/CONTRAST MATERIAL | 14 | $178 |
| Radiologic examination, chest; 2 views | 97 | $158 |
| Ultrasound, pregnant uterus, real time with image documentation, limited (eg, fetal heart beat, placental location, fetal position and/or qualitative amniotic fluid volume), 1 or more fetuses | 13 | $146 |
2019
| Radiologic examination, chest; 2 views | 56 | $98 |
| Radiologic examination, chest; single view | 22 | $18 |
Professional record
- NPI
- 1891830170
- Licence
- CA A85964California A85964: Current · expires 2027-12-31
- Trained
- University of California, Geffen School of Medicine, 2002
- Gender
- Male
More record details
- Sole proprietor
- No
- Taxonomy
- Diagnostic radiology (2085R0202X)
- Mailing address
- File 54433, Los Angeles, CA, 90074
- NPI first listed
- 2007-02-21
- NPI last updated
- 2021-12-15
This is when the NPI record was last certified, not a medical board exam.
This office lists an electronic records connection.