Marisa Tienyun Smith, MD
Emergency Medicine · El Centro
- 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
- Since medical school
- 8 years
- Wright State University Boonshoft School of Medicine, 2018
Offices
3 locations · Regents of the University of California · Pacific Emergency Providers A Prof Corp
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. Smith’s office to ask if they take your plan before you enroll.
California Medical Board record
Licence A185755 · Current
Licensed to practise in California · since 2023 · expires 2027-04-30 · Wright State University Boonshoft School of Medicine.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
Original Medicare doctor bills
$37,673
Medicare paid this office $37,673 for 276 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Emergency department visit with high level of medical decision making | 194 | $26,978 | $138 |
| Critical care, first 30-74 minutes | 19 | $3,356 | $177 |
| Emergency department visit with moderate level of medical decision making | 28 | $2,366 | $85 |
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 13 | $1,855 | $143 |
| Ultrasound of heart, follow-up | 21 | $442 | $21 |
Who their Medicare patients are
276 Original Medicare patients in 2024. Average age 75 · Under 65 12% · 85 and older 16% · Women 54% · Also on Medicaid 34% · Health risk score 2.39. Above the middle of the specialty; the typical emergency medicine clinician is at 2.01.
Conditions among them: High blood pressure 75% · Coronary heart disease 39% · Diabetes 37% · Chronic kidney disease 37% · Heart failure 31% · Depression 29% · Atrial fibrillation 28% · Cancer 24% · COPD 20% · Dementia 20% · Stroke 17%.
The office billed $238,214, Medicare allowed $51,210 and paid $37,673; for 327 services of 25 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 | 276 | 327 | 75 | 2.39 | $238,214 | $37,673 |
| 2023 | 125 | 150 | 75 | 2.03 | $108,985 | $18,954 |
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
| Emergency department visit with high level of medical decision making | 87 | $13,129 | $151 |
| Emergency department visit with moderate level of medical decision making | 25 | $2,502 | $100 |
Medicaid work
$27,088 in 2024
Medicaid paid $27,088 for 244 billed services this clinician did in 2024, up to 30 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.
| EMERGENCY DEPARTMENT VISIT HIGH MDM | 202 | $23,315 |
| EMERGENCY DEPT VISIT MOD MDM | 42 | $3,773 |
| 2024 | 244 | 2 | 30 | $27,088 |
| 2023 | 160 | 2 | 27 | $16,079 |
See the largest Medicaid services in earlier years
2023
| EMERGENCY DEPARTMENT VISIT HIGH MDM | 111 | $12,089 |
| EMERGENCY DEPT VISIT MOD MDM | 49 | $3,990 |
Drugs they prescribed that Part D paid
$568
Pharmacies billed $568 in 2024.
This is pharmacy cost, not the office bill, and not what patients paid.
46 generic and fewer than 11 brand-name prescriptions · $568 in drug cost · 14 antibiotic prescriptions to 13 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.
Year by year
| 2024 | 50 | 38 | None | None | $568 |
| 2023 | 28 | 22 | 0% (0) | None | $2,628 |
| 2022 | 18 | 14 | None | None | $538 |
| 2021 | 65 | 28 | 0% (0) | None | $1,334 |
| 2020 | 29 | 16 | None | None | $2,226 |
| 2019 | 37 | 22 | 41% (15) | None | $467 |
| 2018 | 20 | 16 | 55% (11) | 0% | $185 |
Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.
See the drugs prescribed each year
2019: 1 drug
| Oxycodone | 11 | $62 | $6 |
Money from drug and device companies
$16 in 2021
A payment is not proof that care is biased.
| GlaxoSmithKline | Bexsero | $16 | 1 payment
|
See the published payment
| GlaxoSmithKline | Meals · 2021-01-13 | Bexsero | $16 |
Checkups this office reported
Medicare did not publish checkup rates for this clinician.
- Medicare’s overall office score
- 76.5 / 100
- Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.
Professional record
- NPI
- 1447756259
- Licence
- CA A185755California A185755: Current · expires 2027-04-30
- Trained
- Wright State University Boonshoft School of Medicine, 2018 · 8 years ago
- Group
- Regents of the University of California · Pacific Emergency Providers A Prof Corp
- Gender
- Female
More record details
- Sole proprietor
- No
- Taxonomy
- Federal specialty code 207P00000X (207P00000X)
- Mailing address
- 1100 Veterans Blvd, Redwood City, CA, 94063
- NPI first listed
- 2018-04-02
- NPI last updated
- 2026-06-26
- NPI record certified
- 2026-06-26
This is when the NPI record was last certified, not a medical board exam.
Extra NPI addresses: 1415 Ross Ave, El Centro, CA, 92243 · 300 Pasteur Dr, Stanford, CA, 94305