Judy Chang, MD
Anesthesiology · Concord
- 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
- 3
Offices
3 locations · Cep America - Anesthesia PC · G2 Anesthesia PC
Looking this up.
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. Chang’s office to ask if they take your plan before you enroll.
California Medical Board record
Licence A141691 · Current
Licensed to practise in California · since 2016 · expires 2028-04-30 · University of Maryland School of Medicine.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
Original Medicare doctor bills
$38,907
Medicare paid this office $38,907 for 286 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Anesthesia for lens surgery | 66 | $7,292 | $110 |
| Anesthesia for other procedure on large bowel using an endoscope | 47 | $5,179 | $110 |
| Anesthesia for procedure on small and large bowel using an endoscope | 19 | $2,557 | $135 |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 22 | $2,319 | $105 |
| Anesthesia for other repair of lower abdomen hernia (1 year or older) | 12 | $2,203 | $184 |
See all 7 services
| Anesthesia for lens surgery | 66 | $7,292 | $110 |
| Anesthesia for other procedure on large bowel using an endoscope | 47 | $5,179 | $110 |
| Anesthesia for procedure on small and large bowel using an endoscope | 19 | $2,557 | $135 |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 22 | $2,319 | $105 |
| Anesthesia for other repair of lower abdomen hernia (1 year or older) | 12 | $2,203 | $184 |
| Anesthesia for exam of colon using an endoscope | 17 | $1,770 | $104 |
| Anesthesia for other procedure on urinary system through urethra | 11 | $1,208 | $110 |
Who their Medicare patients are
286 Original Medicare patients in 2024. Average age 75 · Under 65 4% · 85 and older 9% · Women 49% · Also on Medicaid 14% · Health risk score 1.15. At or below the middle of the specialty; the typical anesthesiology clinician is at 1.54.
Conditions among them: High blood pressure 69% · Diabetes 25% · Cancer 22% · Coronary heart disease 19% · Chronic kidney disease 18% · Atrial fibrillation 16% · Depression 15% · Heart failure 12% · COPD 9% · Stroke 7%.
The office billed $563,450, Medicare allowed $48,479 and paid $38,907; for 289 services of 39 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 | 286 | 289 | 75 | 1.15 | $563,450 | $38,907 |
| 2023 | 217 | 234 | 75 | 1.30 | $464,856 | $40,503 |
| 2022 | 211 | 256 | 73 | 1.62 | $662,112 | $45,324 |
| 2021 | 225 | 265 | 74 | 2.22 | $729,239 | $49,330 |
| 2020 | 146 | 170 | 74 | 2.23 | $443,691 | $30,835 |
| 2019 | 234 | 277 | 74 | 1.92 | $723,004 | $52,655 |
| 2018 | 210 | 268 | 74 | 2.04 | $717,954 | $50,874 |
| 2017 | 194 | 231 | 72 | 1.46 | $512,167 | $37,747 |
| 2016 | 134 | 168 | 72 | 1.94 | $360,292 | $29,131 |
| 2015 | 101 | 106 | 73 | 1.16 | $193,500 | $18,224 |
| 2014 | 48 | 53 | 72 | 1.10 | $91,409 | $8,474 |
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: 4 services
| Anesthesia for other procedure on lower abdomen | 18 | $4,095 | $227 |
| Anesthesia for lens surgery | 23 | $2,986 | $130 |
| Anesthesia for other procedure on large bowel using an endoscope | 14 | $1,599 | $114 |
| Anesthesia for procedure on small and large bowel using an endoscope | 12 | $1,559 | $130 |
2022: 6 services
| Anesthesia for procedure for total knee joint replacement | 11 | $3,264 | $297 |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 21 | $2,875 | $137 |
| Anesthesia for other procedure on lower abdomen | 11 | $2,765 | $251 |
| Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) | 11 | $508 | $46 |
| Insertion of artery tube for blood sampling or infusion through skin | 12 | $455 | $38 |
| Ultrasonic guidance for needle placement | 16 | $434 | $27 |
2021: 5 services
| Anesthesia for other procedure on upper abdomen | 19 | $6,831 | $360 |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 31 | $4,429 | $143 |
| Anesthesia for other procedure on lower leg, ankle, and foot bones | 20 | $2,859 | $143 |
| Anesthesia for other procedure on large bowel using an endoscope | 14 | $2,072 | $148 |
| Insertion of artery tube for blood sampling or infusion through skin | 17 | $657 | $39 |
2020: 1 service
| Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes | 13 | $459 | $35 |
2019: 8 services
| Anesthesia for total hip replacement | 18 | $5,711 | $317 |
| Anesthesia for other procedure on upper abdomen | 16 | $5,532 | $346 |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 23 | $3,173 | $138 |
| Anesthesia for other procedure on large bowel using an endoscope | 20 | $2,666 | $133 |
| Anesthesia for procedure on small and large bowel using an endoscope | 11 | $1,678 | $153 |
| Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes | 16 | $565 | $35 |
| Insertion of artery tube for blood sampling or infusion through skin | 13 | $511 | $39 |
| Ultrasonic guidance for needle placement | 14 | $408 | $29 |
2018: 8 services
| Anesthesia for procedure for total knee joint replacement | 20 | $5,810 | $291 |
| Anesthesia for x-ray or radiation therapy | 13 | $2,817 | $217 |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 19 | $2,765 | $146 |
| Anesthesia for other procedure on large bowel using an endoscope | 12 | $1,603 | $134 |
| Continuous infusion of anesthetic agent and/or steroid into thigh nerve (femoral nerve) through catheter | 13 | $773 | $59 |
| Insertion of artery tube for blood sampling or infusion through skin | 14 | $538 | $38 |
| Ultrasonic guidance for needle placement | 17 | $491 | $29 |
| Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes | 12 | $450 | $35 |
2017: 3 services
| Anesthesia for procedure on lower intestine using an endoscope | 59 | $8,055 | $137 |
| Anesthesia for procedure on gastrointestinal tract using an endoscope | 35 | $4,838 | $138 |
| Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes | 16 | $546 | $34 |
2016: 2 services
| Anesthesia for procedure on gastrointestinal tract using an endoscope | 15 | $2,300 | $153 |
| Anesthesia for procedure on lower intestine using an endoscope | 15 | $2,195 | $146 |
2015: 1 service
| Anesthesia for procedure on lower intestine using an endoscope | 17 | $2,728 | $160 |
Money from drug and device companies
$533 in 2025
| 2025 | 2 | 2 | $500 | $533 |
| 2024 | 1 | 6 | $4,250 | $4,250 |
| 2023 | 2 | 2 | None | $48 |
| 2022 | 2 | 2 | None | $36 |
| 2020 | 2 | 2 | None | $45 |
| 2019 | 1 | 1 | None | $15 |
Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.
A payment is not proof that care is biased.
| Hyperfine Operations | Swoop | $500 | 1 payment
|
| Takeda Pharmaceuticals U.S.A. | Entyvio | $33 | 1 payment
|
See all 2 published payments
| Takeda Pharmaceuticals U.S.A. | Meals · 2025-11-17 | Entyvio | $33 |
| Hyperfine Operations | Consulting · 2025-03-13 | Swoop | $500 |
See earlier years (2024, 2023, 2022, 2020, 2019)
2024: $4,250
| Hyperfine Operations | Swoop | $4,250 | 1 payment
|
2023: $48
| AstraZeneca Pharmaceuticals LP | Andexxa | $31 | 1 payment
|
| Merck Sharp & Dohme | Bridion | $17 | 1 payment
|
2022: $36
| Pacira Pharmaceuticals | Exparel | $23 | 1 payment
|
| Trevena | Olinvyk | $13 | 1 payment
|
2020: $45
| Abbott Laboratories | Freestyle Libre | $23 | 1 payment
|
| Mallinckrodt Hospital Products | Ofirmev | $21 | 1 payment
|
2019: $15
| Boehringer Ingelheim Pharmaceuticals | Pradaxa | $15 | 1 payment
|
Checkups this office reported
Medicare did not publish checkup rates for this clinician.
- Medicare’s overall office score
- 61.2 / 100
- Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.
Professional record
- NPI
- 1740508720
- Licence
- CA A141691, NY 262329-1California A141691: Current · expires 2028-04-30
- Trained
- University of Maryland School of Medicine, 2010
- Group
- Cep America - Anesthesia PC · G2 Anesthesia PC
- Gender
- Female
More record details
- Sole proprietor
- No
- Taxonomy
- Federal specialty code 207L00000X (207L00000X)
- Mailing address
- 550 1st Ave, New York, NY, 10016
- NPI first listed
- 2010-05-14
- NPI last updated
- 2016-08-20
This is when the NPI record was last certified, not a medical board exam.