Reena Parada Thomas, MD
Neurology · Stanford
- Medicare standing
- Clear
- Enrolled, allowed to bill and order, not excluded
- Plans that list them
- 5
- 2 carriers
- Office
- 1
Offices
1 location · Stanford Health Care · 3,152 clinicians in this group
Hospitals listed: Stanford Health Care. That is not proof they admit you there this week.
Plans that list them
5 plans · 2 carriers
A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Thomas’s office at (650) 723-4000 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.
5 of 5 plans
| SCAN Balance (HMO C-SNP) | SCAN Health Plan | Listed | Oct 3, 2026 |
| SCAN Classic (HMO) | SCAN Health Plan | Listed | Oct 3, 2026 |
| SCAN MyChoice (HMO) | SCAN Health Plan | Listed | Oct 3, 2026 |
| SCAN Strive (HMO C-SNP) | SCAN Health Plan | Listed | Oct 3, 2026 |
| DualConnect (HMO D-SNP) | Santa Clara Family Health Plan | Listed | Sep 1, 2026 |
California Medical Board record
Licence A117262 · Current
Licensed to practise in California · since 2011 · expires 2028-10-31 · Georgetown University School of Medicine.
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.
- Stanford Health CareStanford, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency departmentPart of Stanford Health Care, which runs 3 hospitalsHome of Stanford Cancer Institute, a National Cancer Institute designated comprehensive cancer centrePatients rate it 4 of 5 · 83% would definitely recommend itOverall rating: 5 of 5 starsWorse than the national rate — Perioperative pulmonary embolism or deep vein thrombosis rate: 5.31 (4.24 to 6.37) · 8,661 cases, Jul 2022 – Jun 2024Worse than the national rate — Rate of inpatient admissions for patients receiving outpatient chemotherapy: 14.1 (12.7 to 15.7) · 2,191 cases, Jan 2024 – Dec 2024Better than the national rate — Postoperative respiratory failure rate: 4.08 (1.95 to 6.21) · 5,296 cases, Jul 2022 – Jun 2024Better than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.317, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.446, Oct 2024 – Sep 2025Better than the national rate — SSI - Colon Surgery: 0.241, Oct 2024 – Sep 2025Better than the national rate — Ratio of unplanned hospital visits after hospital outpatient surgery: 0.7 (0.6 to 0.9) · 3,348 cases, Jan 2024 – Dec 2024
See every measure and the patient survey for Stanford Health Care
Behind the star rating — Deaths: 5 better, 3 the same, 0 worse of 8 measures. Safety: 3 better, 5 the same, 0 worse of 8 measures. Readmissions: 2 better, 5 the same, 4 worse of 11 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.
| Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths | 5.31 (4.24 to 6.37) · 8,661 cases | Worse | Jul 2022 – Jun 2024 |
| Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits | 14.1 (12.7 to 15.7) · 2,191 cases | Worse | Jan 2024 – Dec 2024 |
| Postoperative respiratory failure rateComplications and deaths | 4.08 (1.95 to 6.21) · 5,296 cases | Better | Jul 2022 – Jun 2024 |
| Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections | 0.317 | Better | Oct 2024 – Sep 2025 |
| Clostridium Difficile (C.Diff)Infections | 0.446 | Better | Oct 2024 – Sep 2025 |
| SSI - Colon SurgeryInfections | 0.241 | Better | Oct 2024 – Sep 2025 |
| Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits | 0.7 (0.6 to 0.9) · 3,348 cases | Better | Jan 2024 – Dec 2024 |
| Abdominopelvic accidental puncture or laceration rateComplications and deaths | 1.06 (0.45 to 1.67) · 5,374 cases | No different | Jul 2022 – Jun 2024 |
| CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths | 0.86 (0.72 to 1) | No different | Jul 2022 – Jun 2024 |
| Death rate among surgical inpatients with serious treatable complicationsComplications and deaths | 166.09 (137.88 to 194.3) · 470 cases | No different | Jul 2022 – Jun 2024 |
| Death rate for CABG surgery patientsComplications and deaths | 1.1 · 192 cases | None | Jul 2022 – Jun 2025 |
| Death rate for COPD patientsComplications and deaths | 6.4 · 146 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart attack patientsComplications and deaths | 9.7 · 253 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart failure patientsComplications and deaths | 6.3 · 880 cases | None | Jul 2022 – Jun 2025 |
| Death rate for pneumonia patientsComplications and deaths | 10.3 · 935 cases | None | Jul 2022 – Jun 2025 |
| Death rate for stroke patientsComplications and deaths | 8.7 · 501 cases | None | Jul 2023 – Jun 2025 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths | 2.1 · 7,730 cases | None | Jul 2024 – Jun 2025 |
| Iatrogenic pneumothorax rateComplications and deaths | 0.13 (0 to 0.27) · 20,799 cases | No different | Jul 2022 – Jun 2024 |
| In-hospital fall-associated fracture rateComplications and deaths | 0.28 (0.14 to 0.43) · 23,182 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative acute kidney injury requiring dialysis rateComplications and deaths | 0.94 (0.2 to 1.68) · 5,694 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative hemorrhage or hematoma rateComplications and deaths | 2.36 (1.54 to 3.19) · 7,846 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative sepsis rateComplications and deaths | 5.2 (3.76 to 6.64) · 5,603 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative wound dehiscence rateComplications and deaths | 1.38 (0.23 to 2.53) · 2,211 cases | No different | Jul 2022 – Jun 2024 |
| Pressure ulcer rateComplications and deaths | 0.52 (0.21 to 0.83) · 19,915 cases | No different | Jul 2022 – Jun 2024 |
| Rate of complications for hip/knee replacement patientsComplications and deaths | 3.6 · 416 cases | None | Apr 2023 – Mar 2025 |
| Central Line Associated Bloodstream Infection (ICU + select Wards)Infections | 0.869 | No different | Oct 2024 – Sep 2025 |
| MRSA BacteremiaInfections | 0.857 | No different | Oct 2024 – Sep 2025 |
| SSI - Abdominal HysterectomyInfections | 0.368 | No different | Oct 2024 – Sep 2025 |
| Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits | 16.2 · 247 cases | None | Jul 2023 – Jun 2025 |
| Heart failure (HF) 30-Day Readmission RateUnplanned return visits | 20.5 · 1,021 cases | None | Jul 2023 – Jun 2025 |
| Hospital return days for heart attack patientsUnplanned return visits | 47.8 · 258 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for heart failure patientsUnplanned return visits | -1.6 · 990 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for pneumonia patientsUnplanned return visits | 20.8 · 976 cases | None | Jul 2022 – Jun 2025 |
| Pneumonia (PN) 30-Day Readmission RateUnplanned return visits | 16.5 · 959 cases | None | Jul 2023 – Jun 2025 |
| Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits | 5.2 (4.4 to 6.2) · 2,191 cases | No different | Jan 2024 – Dec 2024 |
| Rate of readmission after hip/knee replacementUnplanned return visits | 5.1 · 425 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for CABGUnplanned return visits | 9.6 · 158 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits | 19.6 · 183 cases | None | Jul 2023 – Jun 2025 |
| Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits | 12.7 (10.4 to 15.4) · 4,578 cases | No different | Jan 2022 – Dec 2024 |
What patients said (6,810 patients answered, 25% of those asked)
| Cleanliness | 4 |
| Nurse communication | 4 |
| Doctor communication | 4 |
| Communication about medicines | 3 |
| Discharge information | 4 |
| Overall hospital rating | 4 |
| Quietness | 2 |
| Recommend hospital | 5 |
| Room was "always" clean | 75% |
| Nurses "always" communicated well | 82% |
| Doctors "always" communicated well | 81% |
| Staff "always" explained | 63% |
| Yes, staff "did" give patients this information | 89% |
| Yes, staff "did" give patients information about help after discharge | 89% |
| Doctors "always" explained things so they could understand | 76% |
| Doctors "always" listened carefully | 80% |
| Doctors "always" treated them with courtesy and respect | 87% |
| Patients who gave a rating of "9" or "10" (high) | 79% |
| Staff "always" explained new medications | 76% |
| Nurses "always" explained things so they could understand | 77% |
| Nurses "always" listened carefully | 79% |
| Nurses "always" treated them with courtesy and respect | 88% |
| "Always" quiet at night | 53% |
| "YES", patients would definitely recommend the hospital | 83% |
| Staff "always" explained possible side effects | 50% |
| Yes, staff "did" give patients information about possible symptoms | 90% |
Original Medicare doctor bills
$4,342
Medicare paid this office $4,342 for 28 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Return visit (30+ min) | 15 | $1,305 | $87 |
Who their Medicare patients are
28 Original Medicare patients in 2024. Average age 69 · Women 57% · Health risk score 2.78. Sicker patients than 9 in 10 peers; the typical neurology clinician is at 1.61.
Conditions among them: High blood pressure 64% · Cancer 46% · Stroke 39%.
The office billed $12,113, Medicare allowed $5,666 and paid $4,342; for 40 services of 4 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 | 28 | 40 | 69 | 2.78 | $12,113 | $4,342 |
| 2023 | 64 | 143 | 69 | 2.29 | $58,451 | $14,035 |
| 2022 | 62 | 121 | 70 | 2.67 | $49,264 | $13,604 |
| 2021 | 55 | 128 | 71 | 1.86 | $60,973 | $13,229 |
| 2020 | 59 | 193 | 69 | 2.27 | $78,656 | $15,864 |
| 2019 | 81 | 185 | 71 | 2.41 | $25,917 | $17,786 |
| 2018 | 81 | 185 | 69 | 2.15 | $31,136 | $18,841 |
| 2017 | 88 | 176 | 69 | 2.23 | $45,109 | $18,251 |
| 2016 | 89 | 177 | 69 | 2.16 | $54,053 | $18,422 |
| 2015 | 73 | 135 | 71 | 2.25 | $50,151 | $16,338 |
| 2014 | 15 | 21 | 69 | 1.24 | $9,198 | $2,774 |
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
| Return visit (30+ min) | 51 | $10,519 | $90 |
| New patient visit (60+ min) | 16 | $2,537 | $159 |
2022: 3 services
| Return visit (30+ min) | 45 | $6,202 | $91 |
| Long return visit (40+ min) | 27 | $4,293 | $130 |
| New patient visit (60+ min) | 16 | $2,713 | $170 |
2021: 2 services
| Return visit (30+ min) | 37 | $7,641 | $89 |
| Long return visit (40+ min) | 21 | $3,547 | $131 |
2020: 5 services
| Return visit (30+ min) | 31 | $6,022 | $74 |
| Return visit (30+ min) | 23 | $3,200 | $80 |
| Long return visit (40+ min) | 15 | $2,015 | $96 |
| New patient visit (45+ min) | 11 | $1,351 | $123 |
| Long return visit (40+ min) | 11 | $1,080 | $98 |
2019: 4 services
| Long return visit (40+ min) | 34 | $6,658 | $99 |
| Long return visit (40+ min) | 24 | $4,956 | $99 |
| New patient visit (60+ min) | 14 | $2,047 | $146 |
| Return visit (30+ min) | 17 | $1,435 | $68 |
2018: 4 services
| Long return visit (40+ min) | 28 | $6,085 | $100 |
| Long return visit (40+ min) | 27 | $4,946 | $97 |
| New patient visit (60+ min) | 20 | $3,010 | $151 |
| Return visit (30+ min) | 12 | $848 | $71 |
2017: 3 services
| Long return visit (40+ min) | 36 | $6,513 | $96 |
| Long return visit (40+ min) | 24 | $5,006 | $98 |
| New patient visit (60+ min) | 20 | $2,885 | $144 |
2016: 5 services
| Long return visit (40+ min) | 36 | $6,411 | $99 |
| Long return visit (40+ min) | 18 | $4,261 | $99 |
| New patient visit (60+ min) | 14 | $2,096 | $150 |
| New patient visit (60+ min) | 11 | $1,647 | $150 |
| Return visit (30+ min) | 14 | $1,140 | $67 |
2015: 3 services
| New patient visit (60+ min) | 38 | $5,645 | $149 |
| Long return visit (40+ min) | 32 | $5,512 | $97 |
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 17 | $3,223 | $179 |
Medicaid work
$814 in 2021
Medicaid paid $814 for 13 billed services this clinician did in 2021, up to 12 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.
| Return visit (30+ min) | 13 | $814 |
| 2021 | 13 | 1 | 12 | $814 |
Money from drug and device companies
$39 in 2019
A payment is not proof that care is biased.
| Novocure | Oncology | $39 | 1 payment
|
See the published payment
| Novocure | Meals · 2019-11-23 | Oncology | $39 |
Research money
Money a company paid to run a study. Where it went to their institution, the clinician is named as an investigator and did not receive it; the amount covers the whole study, often across many sites.
| E.R. Squibb & Sons, L.L.C. · A Multi-Center Phase II Blinded Or Open-Label Study To Evaluate Tumor Response in Subjects With Melanoma Brain Metastases Treated With Nivolumab Monotherapy Or Nivolumab Combined With Ipilimumab · 2019 | Their institution | $44,636 |
| E.R. Squibb & Sons, L.L.C. · A Multi-Center Phase II [Blinded Or Open-Label] Study To Evaluate Tumor Response in Subjects With Melanoma Brain Metastases Treated With Nivolumab Monotherapy Or Nivolumab Combined With Ipilimumab · 2021 | Their institution | $17,179 |
| E.R. Squibb & Sons, L.L.C. · A Multi-Center Phase II [Blinded Or Open-Label] Study To Evaluate Tumor Response in Subjects With Melanoma Brain Metastases Treated With Nivolumab Monotherapy Or Nivolumab Combined With Ipilimumab · 2020 | Their institution | $16,884 |
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
- 1285868786
- Licence
- CA A117262California A117262: Current · expires 2028-10-31
- Group
- Stanford Health Care
- Gender
- Female
More record details
- Sole proprietor
- No
- Taxonomy
- Neurology (2084N0400X); Student in a training program (390200000X)
- Mailing address
- 300 Pasteur Drive, Neurology, Room H3144/Mc:5235, Stanford, CA, 94305
- NPI first listed
- 2009-05-12
- NPI last updated
- 2014-05-27
This is when the NPI record was last certified, not a medical board exam.