Mark Sun, MD
Diagnostic Radiology · Mountain View
- Medicare standing
- Clear
- Enrolled, allowed to bill and order, not excluded
- Plans that list them
- 1
- 1 carrier
- Office
- 1
Offices
1 location · Sutter Bay Medical Foundation · 3,783 clinicians in this group
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Plans that list them
1 plan · 1 carrier
A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Sun’s office at (650) 691-6174 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.
| Alignment Health Sutter Advantage +More (HMO) | Alignment Health Plan | Listed | Oct 3, 2026 |
California Medical Board record
Licence A126689 · Current
Licensed to practise in California · since 2013 · expires 2027-03-31 · University of California, San Diego School of Medicine.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
Original Medicare doctor bills
$412,077
Medicare paid this office $412,077 for 2,886 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Nuclear medicine study from skull base to mid-thigh with ct scan | 31 | $55,745 | $1,798 |
| Ct scan of abdomen and pelvis with contrast | 106 | $34,042 | $318 |
| Dxa bone density measurement of hip, pelvis, spine | 361 | $18,793 | $52 |
| Ct scan of chest without contrast | 127 | $16,776 | $132 |
| Mri scan of leg joint without contrast | 71 | $15,960 | $207 |
See all 64 services
| Nuclear medicine study from skull base to mid-thigh with ct scan | 31 | $55,745 | $1,798 |
| Ct scan of abdomen and pelvis with contrast | 106 | $34,042 | $318 |
| Dxa bone density measurement of hip, pelvis, spine | 361 | $18,793 | $52 |
| Ct scan of chest without contrast | 127 | $16,776 | $132 |
| Mri scan of leg joint without contrast | 71 | $15,960 | $207 |
| Screening mammography | 75 | $12,746 | $170 |
| Ct scan of abdomen and pelvis before and after contrast | 35 | $12,676 | $362 |
| Complete ultrasound of abdomen and pelvis artery and vein blood flow | 40 | $10,772 | $263 |
| X-ray of chest, 2 views | 342 | $10,429 | $30 |
| Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries | 35 | $9,904 | $283 |
| Mri scan of arm joint without contrast | 46 | $9,507 | $198 |
| Mri scan of abdomen before and after contrast | 26 | $8,452 | $325 |
| X-ray of knee, 1-2 views | 175 | $8,328 | $35 |
| Ct scan of abdomen and pelvis without contrast | 42 | $7,987 | $190 |
| Complete ultrasound scan behind abdominal cavity | 68 | $7,359 | $108 |
| Mri scan of pelvis before and after contrast | 21 | $6,640 | $316 |
| Limited ultrasound scan of abdomen | 78 | $6,566 | $82 |
| X-ray of both knees while standing | 161 | $6,553 | $39 |
| Ct scan of chest with contrast | 52 | $6,475 | $122 |
| Ultrasound scan of head and neck soft tissue | 59 | $5,969 | $101 |
| X-ray of shoulder, minimum of 2 views | 150 | $5,816 | $35 |
| Ct scan head or brain without contrast | 58 | $5,553 | $96 |
| X-ray of foot, minimum of 3 views | 138 | $5,134 | $32 |
| Screening 3d breast mammography | 71 | $4,653 | $65 |
| Ultrasound of abdomen and pelvis artery and vein blood flow | 31 | $4,458 | $144 |
| X-ray of hip, 1 view | 132 | $4,410 | $32 |
| Ct scan of abdomen before and after contrast | 17 | $4,371 | $257 |
| Ultrasound study of one arm or leg veins with compression and maneuvers | 34 | $4,172 | $119 |
| Ct scan of face without contrast | 28 | $3,790 | $135 |
| X-ray of lower and sacral spine, 2-3 views | 87 | $3,373 | $38 |
| Ultrasound scan of uterus, ovaries, tubes, cervix and pelvic area through vagina | 25 | $3,178 | $127 |
| Complete ultrasound scan of pelvis | 27 | $2,877 | $107 |
| Ct scan of leg without contrast | 23 | $2,801 | $122 |
| X-ray of ankle, minimum of 3 views | 69 | $2,801 | $35 |
| Complete ultrasound scan of abdomen | 26 | $2,694 | $104 |
| X-ray of hand, minimum of 3 views | 62 | $2,646 | $32 |
| Ct scan of blood vessels of chest with contrast | 11 | $2,618 | $238 |
| X-ray of wrist, minimum of 3 views | 60 | $2,578 | $38 |
| Mri scan of abdomen without contrast | 14 | $2,553 | $182 |
| X-ray of knee, 3 views | 56 | $2,357 | $40 |
| Low dose ct scan of chest for lung cancer screening | 13 | $2,260 | $174 |
| Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml | 199 | $2,084 | $0 |
| Double contrast x-ray of esophagus | 19 | $2,065 | $109 |
| X-ray of finger, minimum of 2 views | 48 | $1,897 | $37 |
| X-ray of upper spine, 2-3 views | 43 | $1,776 | $41 |
| Ultrasound scan of abdominal aorta | 12 | $1,712 | $143 |
| Injection, gadobutrol, 0.1 ml | 56 | $1,364 | $0 |
| X-ray of both hips, 2 views | 29 | $1,280 | $44 |
| Ct scan of heart with evaluation of blood vessel calcium | 14 | $1,242 | $89 |
| X-ray of lower and sacral spine, minimum of 4 views | 22 | $1,116 | $51 |
| X-ray of knee, 4 or more views | 25 | $1,069 | $37 |
| 3d radiographic procedure | 42 | $1,060 | $25 |
| Limited ultrasound scan of 1 breast | 12 | $958 | $80 |
| X-ray of abdomen, 1 view | 29 | $819 | $28 |
| X-ray of ribs on side of body, minimum of 3 views | 18 | $761 | $42 |
| X-ray of hip, 2-3 views | 15 | $719 | $48 |
| X-ray of pelvis, 1-2 views | 25 | $709 | $27 |
| X-ray of elbow, minimum of 3 views | 20 | $651 | $33 |
| X-ray of wrist, 2 views | 16 | $649 | $34 |
| X-ray of toe, minimum of 2 views | 23 | $629 | $27 |
| X-ray of sacrum and tailbone, minimum of 2 views | 17 | $530 | $31 |
| X-ray of middle spine, 2 views | 15 | $455 | $30 |
| X-ray of lower leg, 2 views | 12 | $371 | $31 |
| X-ray of heel, minimum of 2 views | 11 | $304 | $28 |
Who their Medicare patients are
2,886 Original Medicare patients in 2024. Average age 76 · Under 65 3% · 85 and older 14% · Women 66% · Also on Medicaid 10% · Health risk score 0.95. At or below the middle of the specialty; the typical diagnostic radiology clinician is at 1.7.
Conditions among them: High blood pressure 64% · Diabetes 21% · Coronary heart disease 21% · Chronic kidney disease 19% · Cancer 19% · Atrial fibrillation 15% · Depression 15% · Heart failure 10% · COPD 10% · Dementia 5% · Stroke 5%.
The office billed $2,575,445, Medicare allowed $535,776 and paid $412,077; for 29,656 services of 152 kinds; $3,754 of it was for drugs given in the office and $408,324 for care.
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 | 2,886 | 29,656 | 76 | 0.95 | $2,575,445 | $412,077 |
| 2023 | 2,690 | 25,849 | 76 | 0.96 | $2,237,395 | $377,610 |
| 2022 | 1,064 | 10,031 | 75 | 1.15 | $659,368 | $117,878 |
| 2021 | 299 | 433 | 70 | 2.23 | $63,084 | $9,178 |
| 2020 | 246 | 321 | 68 | 3.26 | $43,935 | $7,128 |
| 2019 | 265 | 509 | 69 | 2.57 | $45,997 | $7,479 |
| 2018 | 502 | 610 | 72 | 1.53 | $70,336 | $5,674 |
| 2017 | 453 | 511 | 72 | 1.35 | $51,906 | $5,335 |
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: 66 services
| Nuclear medicine study from skull base to mid-thigh with ct scan | 25 | $43,337 | $1,733 |
| Screening mammography | 206 | $35,156 | $171 |
| Ct scan of abdomen and pelvis with contrast | 84 | $28,037 | $322 |
| Ct scan of chest without contrast | 106 | $14,333 | $131 |
| Dxa bone density measurement of hip, pelvis, spine | 278 | $14,072 | $51 |
| Mri scan of leg joint without contrast | 62 | $13,457 | $207 |
| X-ray of chest, 2 views | 403 | $12,442 | $30 |
| Screening 3d breast mammography | 177 | $11,755 | $66 |
| Mri scan of abdomen before and after contrast | 27 | $10,013 | $358 |
| Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries | 28 | $7,874 | $281 |
| Mri scan of arm joint without contrast | 35 | $7,619 | $212 |
| Complete ultrasound of abdomen and pelvis artery and vein blood flow | 28 | $7,211 | $258 |
| Mri scan of pelvis before and after contrast | 20 | $7,124 | $339 |
| Ct scan of chest with contrast | 49 | $6,363 | $122 |
| X-ray of knee, 1-2 views | 136 | $6,063 | $33 |
| Ct scan of abdomen and pelvis before and after contrast | 16 | $5,909 | $369 |
| Ct scan of abdomen and pelvis without contrast | 33 | $5,747 | $174 |
| X-ray of foot, minimum of 3 views | 144 | $5,058 | $30 |
| X-ray of shoulder, minimum of 2 views | 142 | $5,018 | $33 |
| X-ray of both knees while standing | 129 | $4,888 | $38 |
| Ultrasound scan of head and neck soft tissue | 45 | $4,584 | $102 |
| Ct scan of blood vessels of chest with contrast | 18 | $4,400 | $244 |
| Complete ultrasound scan behind abdominal cavity | 38 | $4,254 | $112 |
| X-ray of hip, 1 view | 136 | $4,224 | $30 |
| Ct scan head or brain without contrast | 38 | $3,882 | $100 |
| Ultrasound scan of uterus, ovaries, tubes, cervix and pelvic area through vagina | 29 | $3,713 | $124 |
| Limited ultrasound scan of abdomen | 40 | $3,442 | $86 |
| X-ray of lower and sacral spine, 2-3 views | 98 | $3,359 | $34 |
| Ct scan of abdomen before and after contrast | 15 | $3,355 | $224 |
| Complete ultrasound scan of abdomen | 27 | $3,063 | $113 |
| Complete ultrasound scan of pelvis | 30 | $2,895 | $93 |
| Ct scan of leg without contrast | 23 | $2,604 | $113 |
| Ultrasound scan of abdominal aorta | 18 | $2,572 | $143 |
| Diagnostic mammography of 1 breast | 25 | $2,563 | $103 |
| Ultrasound study of one arm or leg veins with compression and maneuvers | 21 | $2,484 | $118 |
| Low dose ct scan of chest for lung cancer screening | 13 | $2,422 | $186 |
| Mri scan of abdomen without contrast | 12 | $2,400 | $200 |
| X-ray of knee, 3 views | 53 | $2,167 | $37 |
| X-ray of ankle, minimum of 3 views | 58 | $2,009 | $32 |
| Limited ultrasound scan of 1 breast | 22 | $2,000 | $91 |
| Ct scan of face without contrast | 15 | $1,961 | $131 |
| Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml | 162 | $1,938 | $0 |
| X-ray of upper spine, 2-3 views | 48 | $1,805 | $37 |
| Diagnostic mammography of both breasts | 11 | $1,679 | $153 |
| X-ray of hand, minimum of 3 views | 43 | $1,567 | $30 |
| X-ray of wrist, minimum of 3 views | 36 | $1,517 | $41 |
| Double contrast x-ray of esophagus | 14 | $1,463 | $105 |
| Injection, gadobutrol, 0.1 ml | 55 | $1,431 | $0 |
| Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) | 28 | $1,382 | $49 |
| X-ray of finger, minimum of 2 views | 35 | $1,304 | $37 |
| X-ray of knee, 4 or more views | 25 | $1,197 | $41 |
| X-ray of ribs on side of body, minimum of 3 views | 28 | $1,000 | $36 |
| Ct scan of heart with evaluation of blood vessel calcium | 11 | $999 | $91 |
| X-ray of lower and sacral spine, minimum of 4 views | 21 | $976 | $46 |
| X-ray of pelvis, 1-2 views | 31 | $876 | $28 |
| X-ray of wrist, 2 views | 23 | $799 | $31 |
| X-ray of both hips, 2 views | 21 | $705 | $34 |
| X-ray of hip, 2-3 views | 11 | $514 | $43 |
| 3d radiographic procedure | 19 | $471 | $25 |
| X-ray of thigh bone, minimum 2 views | 16 | $456 | $29 |
| X-ray of middle spine, 2 views | 13 | $349 | $27 |
| X-ray of abdomen, 1 view | 12 | $348 | $29 |
| X-ray of elbow, minimum of 3 views | 13 | $348 | $27 |
| X-ray of toe, minimum of 2 views | 13 | $345 | $27 |
| X-ray of lower leg, 2 views | 13 | $341 | $26 |
| X-ray of sacrum and tailbone, minimum of 2 views | 12 | $340 | $28 |
2022: 30 services
| Ct scan of abdomen and pelvis with contrast | 33 | $11,349 | $344 |
| Screening mammography | 37 | $6,312 | $171 |
| X-ray of chest, 2 views | 145 | $5,077 | $34 |
| Dxa bone density measurement of hip, pelvis, spine | 93 | $4,556 | $49 |
| Ct scan of chest without contrast | 28 | $3,785 | $135 |
| Ct scan of abdomen and pelvis without contrast | 15 | $2,943 | $196 |
| Ct scan of chest with contrast | 21 | $2,888 | $138 |
| X-ray of foot, minimum of 3 views | 49 | $2,273 | $33 |
| Screening 3d breast mammography | 32 | $2,112 | $66 |
| X-ray of knee, 1-2 views | 41 | $1,897 | $35 |
| X-ray of shoulder, minimum of 2 views | 47 | $1,811 | $35 |
| X-ray of lower and sacral spine, 2-3 views | 44 | $1,777 | $39 |
| Ultrasound scan of head and neck soft tissue | 14 | $1,570 | $112 |
| X-ray of both knees while standing | 35 | $1,483 | $42 |
| X-ray of hip, 1 view | 40 | $1,379 | $33 |
| Complete ultrasound scan of abdomen | 11 | $1,373 | $125 |
| Ct scan head or brain without contrast | 11 | $1,262 | $115 |
| X-ray of ankle, minimum of 3 views | 23 | $1,143 | $39 |
| X-ray of knee, 3 views | 19 | $833 | $36 |
| X-ray of hand, minimum of 3 views | 15 | $809 | $39 |
| Ct scan head or brain without contrast | 30 | $751 | $25 |
| Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml | 65 | $617 | $0 |
| X-ray of wrist, minimum of 3 views | 13 | $615 | $44 |
| X-ray of finger, minimum of 2 views | 14 | $567 | $40 |
| Injection, gadobutrol, 0.1 ml | 19 | $473 | $0 |
| X-ray of chest, 1 view | 64 | $465 | $6 |
| X-ray of upper spine, 2-3 views | 12 | $462 | $39 |
| X-ray of abdomen, 1 view | 13 | $382 | $27 |
| X-ray of chest, 2 views | 17 | $134 | $7 |
| X-ray of abdomen, 1 view | 14 | $112 | $7 |
2021: 7 services
| Ct scan of abdomen and pelvis with contrast | 29 | $2,116 | $71 |
| Ct scan head or brain without contrast | 51 | $1,552 | $30 |
| X-ray of chest, 1 view | 122 | $984 | $7 |
| Ct scan of chest with contrast | 20 | $859 | $41 |
| Ct scan of chest without contrast | 12 | $462 | $38 |
| X-ray of chest, 2 views | 29 | $194 | $7 |
| Ultrasound study of one arm or leg veins with compression and maneuvers | 12 | $192 | $16 |
2020: 4 services
| Ct scan head or brain without contrast | 43 | $1,578 | $35 |
| Ct scan of abdomen and pelvis with contrast | 21 | $1,567 | $71 |
| X-ray of chest, 1 view | 103 | $918 | $8 |
| X-ray of chest, 2 views | 27 | $218 | $8 |
2019: 6 services
| Ct scan head or brain without contrast | 38 | $1,239 | $32 |
| Ct scan of abdomen and pelvis with contrast | 14 | $900 | $64 |
| X-ray of chest, 1 view | 76 | $681 | $8 |
| Ct scan of chest with contrast | 11 | $554 | $50 |
| X-ray of chest, 2 views | 57 | $500 | $9 |
| X-ray of knee, 1-2 views | 11 | $99 | $7 |
2018: 12 services
| X-ray of shoulder, minimum of 2 views | 73 | $599 | $7 |
| X-ray for bone length assessment | 48 | $557 | $12 |
| X-ray of hip, 1 view | 54 | $387 | $7 |
| X-ray of foot, minimum of 3 views | 30 | $298 | $9 |
| X-ray of lower and sacral spine, 2-3 views | 31 | $285 | $9 |
| X-ray of knee, 3 views | 29 | $262 | $6 |
| X-ray of hip, 2-3 views | 34 | $224 | $7 |
| X-ray of ankle, minimum of 3 views | 18 | $143 | $8 |
| X-ray of knee, 1-2 views | 13 | $123 | $9 |
| X-ray of both hips, 2 views | 17 | $102 | $6 |
| X-ray of wrist, minimum of 3 views | 11 | $79 | $7 |
| X-ray of hand, minimum of 3 views | 11 | $71 | $6 |
2017: 18 services
| X-ray for bone length assessment | 55 | $781 | $14 |
| X-ray of shoulder, minimum of 2 views | 47 | $447 | $9 |
| X-ray of knee, 3 views | 32 | $374 | $10 |
| X-ray of lower and sacral spine, 2-3 views | 32 | $326 | $10 |
| X-ray of entire middle and lower spine, 2-3 views | 20 | $306 | $15 |
| X-ray of hip, 2-3 views | 29 | $296 | $10 |
| X-ray of both hips, 2 views | 17 | $269 | $16 |
| X-ray of hip, 1 view | 26 | $224 | $9 |
| X-ray of foot, minimum of 3 views | 27 | $211 | $8 |
| X-ray of knee, 4 or more views | 20 | $194 | $10 |
| X-ray of wrist, minimum of 3 views | 21 | $175 | $8 |
| X-ray of lower and sacral spine, minimum of 4 views | 11 | $156 | $14 |
| X-ray of thigh bone, minimum 2 views | 15 | $153 | $10 |
| X-ray of hand, minimum of 3 views | 14 | $143 | $8 |
| X-ray of pelvis, 1-2 views | 11 | $112 | $10 |
| X-ray of knee, 1-2 views | 12 | $99 | $8 |
| X-ray of ankle, minimum of 3 views | 12 | $95 | $8 |
| X-ray of finger, minimum of 2 views | 14 | $89 | $6 |
Medicaid work
$840 in 2024
Medicaid paid $840 for 32 billed services this clinician did in 2024, up to 18 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.
| Radiologic examination, chest; 2 views | 32 | $840 |
| 2024 | 32 | 1 | 18 | $840 |
| 2023 | 16 | 1 | 16 | $332 |
| 2022 | 340 | 5 | 56 | $2,671 |
| 2021 | 480 | 4 | 35 | $3,842 |
| 2020 | 356 | 5 | 27 | $3,501 |
| 2019 | 319 | 3 | 45 | $1,652 |
| 2018 | 15 | 1 | 15 | $65 |
See the largest Medicaid services in earlier years
2023
| Radiologic examination, chest; 2 views | 16 | $332 |
2022
| Computed tomography, head or brain; without contrast material | 66 | $1,141 |
| Radiologic examination, chest; single view | 163 | $670 |
| CT ABDOMEN & PELVIS W/CONTRAST MATERIAL | 13 | $379 |
| Radiologic examination, chest; 2 views | 73 | $355 |
| ECHO EXAM OF ABDOMEN | 25 | $126 |
2021
| Radiologic examination, chest; single view | 305 | $1,347 |
| Computed tomography, head or brain; without contrast material | 42 | $1,062 |
| CT ABDOMEN & PELVIS W/CONTRAST MATERIAL | 28 | $1,002 |
| Radiologic examination, chest; 2 views | 105 | $432 |
2020
| CT ABDOMEN & PELVIS W/CONTRAST MATERIAL | 38 | $1,579 |
| Radiologic examination, chest; single view | 210 | $912 |
| Computed tomography, head or brain; without contrast material | 42 | $674 |
| Radiologic examination, chest; 2 views | 54 | $202 |
| DIAGNOSTIC COMPUTED TOMOGRAPHY THORAX W/CONTRAST | 12 | $134 |
2019
| Radiologic examination, chest; 2 views | 237 | $1,033 |
| Radiologic examination, chest; single view | 70 | $337 |
| CT ABDOMEN & PELVIS W/CONTRAST MATERIAL | 12 | $282 |
2018
| Radiologic examination, chest; 2 views | 15 | $65 |
Money from drug and device companies
$114 in 2019
A payment is not proof that care is biased.
| Novartis Pharmaceuticals | None | $114 | 1 payment
|
See the published payment
| Novartis Pharmaceuticals | Meals · 2019-04-11 | None | $114 |
Professional record
- NPI
- 1619236957
- Licence
- CA A126689California A126689: Current · expires 2027-03-31
- Trained
- University of California, San Diego School of Medicine, 2012
- Gender
- Male
More record details
- Sole proprietor
- No
- Taxonomy
- Diagnostic radiology (2085R0202X)
- Mailing address
- 325 Distel Cir, Los Altos, CA, 94022
- NPI first listed
- 2012-05-07
- NPI last updated
- 2022-08-29
- NPI record certified
- 2022-08-29
This is when the NPI record was last certified, not a medical board exam.