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Alvin Hernandez Rivera, MD

Internal Medicine · Fremont

NPI 1417213422

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 · Sutter Bay Medical Foundation · 3,783 clinicians in this group

Looking this up.

Hospitals listed: Alta Bates Summit Medical Center. 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. Rivera’s office to ask if they take your plan before you enroll.

California Medical Board record

Licence A124000 · Current

Licensed to practise in California · since 2012 · expires 2028-07-31 · Michigan State University College of Human 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.

  • Alta Bates Summit Medical CenterOakland, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency departmentPart of Sutter Health, which runs 27 hospitals in 2 statesPatients rate it 3 of 5 · 78% would definitely recommend it
    Overall rating: 5 of 5 starsBetter than the national rate — Death rate among surgical inpatients with serious treatable complications: 130.09 (87.72 to 172.46) · 109 cases, Jul 2022 – Jun 2024Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.274, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.227, Oct 2024 – Sep 2025
See every measure and the patient survey for Alta Bates Summit Medical Center

Behind the star rating — Deaths: 2 better, 6 the same, 0 worse of 8 measures. Safety: 4 better, 3 the same, 0 worse of 7 measures. Readmissions: 3 better, 6 the same, 0 worse of 9 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.

Every scored measure at Alta Bates Summit Medical Center
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths130.09 (87.72 to 172.46) · 109 casesBetterJul 2022 – Jun 2024
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.274BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.227BetterOct 2024 – Sep 2025
Abdominopelvic accidental puncture or laceration rateComplications and deaths1 (0.06 to 1.94) · 1,209 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths0.88 (0.6 to 1.16)No differentJul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths2 · 89 casesNoneJul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths6.9 · 105 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths9.8 · 270 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths8.9 · 447 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths13.7 · 341 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths11.2 · 381 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths2.6 · 2,811 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.13 (0 to 0.31) · 7,167 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.21 (0.02 to 0.4) · 7,659 casesNo differentJul 2022 – Jun 2024
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths2.93 (0.92 to 4.94) · 1,668 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths1.25 (0 to 2.75) · 580 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2.67 (1.19 to 4.15) · 1,446 casesNo differentJul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths6.17 (0.33 to 12.02) · 633 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths8.11 (4.67 to 11.55) · 619 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.61 (0.15 to 3.07) · 309 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.39 (0 to 0.96) · 6,085 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths3.8 · 217 casesNoneApr 2023 – Mar 2025
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.724No differentOct 2024 – Sep 2025
MRSA BacteremiaInfections1.425No differentOct 2024 – Sep 2025
SSI - Colon SurgeryInfections0.716No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits12.7 · 416 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits19.6 · 606 casesNoneJul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits-30.4 · 359 casesNoneJul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits-31.8 · 555 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits-14.4 · 358 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits16 · 382 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits5.1 (3.2 to 8.2) · 25 casesNo differentJan 2024 – Dec 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits10.8 (7.3 to 16) · 25 casesNo differentJan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits4.5 · 232 casesNoneJul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits9.9 · 56 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits20 · 152 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits14.8 (11.1 to 20) · 251 casesNo differentJan 2022 – Dec 2024
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits1.2 (0.9 to 1.5) · 579 casesNo differentJan 2024 – Dec 2024

What patients said (535 patients answered, 18% of those asked)

Patient survey stars by topic at Alta Bates Summit Medical Center
Cleanliness4
Nurse communication3
Doctor communication4
Communication about medicines2
Discharge information3
Overall hospital rating4
Quietness3
Recommend hospital5
Share of patients giving the best answer at Alta Bates Summit Medical Center
Room was "always" clean73%
Nurses "always" communicated well75%
Doctors "always" communicated well81%
Staff "always" explained58%
Yes, staff "did" give patients this information86%
Yes, staff "did" give patients information about help after discharge87%
Doctors "always" explained things so they could understand76%
Doctors "always" listened carefully79%
Doctors "always" treated them with courtesy and respect87%
Patients who gave a rating of "9" or "10" (high)75%
Staff "always" explained new medications73%
Nurses "always" explained things so they could understand69%
Nurses "always" listened carefully72%
Nurses "always" treated them with courtesy and respect85%
"Always" quiet at night54%
"YES", patients would definitely recommend the hospital78%
Staff "always" explained possible side effects43%
Yes, staff "did" give patients information about possible symptoms86%

Original Medicare doctor bills

$113,310

Medicare paid this office $113,310 for 339 people.

This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.

Largest Original Medicare bills
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes243$78,059$104
Hospital discharge day management, more than 30 minutes182$19,342$103
Initial hospital care with moderate level of medical decision making at least 75 minutes60$8,564$140
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes42$4,412$69

Who their Medicare patients are

339 Original Medicare patients in 2024. Average age 77 · Under 65 11% · 85 and older 27% · Women 52% · Also on Medicaid 61% · Health risk score 3.17. Sicker patients than 9 in 10 peers; the typical internal medicine clinician is at 1.76.

Conditions among them: High blood pressure 75% · Chronic kidney disease 60% · Heart failure 55% · Diabetes 53% · Coronary heart disease 45% · Atrial fibrillation 41% · Depression 36% · COPD 33% · Dementia 29% · Stroke 26% · Cancer 22%.

The office billed $416,720, Medicare allowed $144,377 and paid $113,310; for 1,099 services of 9 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

Original Medicare by year
20243391,099773.17$416,720$113,310
2023296960762.94$363,041$101,494
2022300967772.86$336,704$85,532
2021344987763.31$345,478$92,275
2020285916753.26$323,204$85,053
20193741,099733.21$402,428$102,524
20183501,089743.20$387,910$100,187
20173461,241733.19$429,976$112,505
20163441,097762.55$374,299$95,157
20154161,015753.00$354,402$90,622
20145978743.15$40,788$10,531

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

Original Medicare services billed in 2023
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes204$67,154$107
Hospital discharge day management, more than 30 minutes148$15,804$105
Initial hospital care with moderate level of medical decision making at least 75 minutes63$9,888$154
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes63$6,777$72

2022: 5 services

Original Medicare services billed in 2022
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes202$52,001$91
Hospital discharge day management, more than 30 minutes168$16,491$95
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes79$9,649$61
Initial hospital care with moderate level of medical decision making at least 75 minutes27$4,698$174
Hospital observation care on day of discharge17$1,078$63

2021: 5 services

Original Medicare services billed in 2021
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes206$53,472$94
Hospital discharge day management, more than 30 minutes181$17,740$97
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes91$8,770$62
Initial hospital care with moderate level of medical decision making at least 75 minutes43$7,795$177
Advance care planning, first 30 minutes12$873$73

2020: 4 services

Original Medicare services billed in 2020
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes176$48,752$96
Hospital discharge day management, more than 30 minutes150$15,226$98
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes96$12,126$65
Initial hospital care with moderate level of medical decision making at least 75 minutes40$6,814$170

2019: 4 services

Original Medicare services billed in 2019
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes226$55,176$91
Hospital discharge day management, more than 30 minutes181$18,038$97
Initial hospital care with moderate level of medical decision making at least 75 minutes84$15,175$174
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes86$9,669$64

2018: 5 services

Original Medicare services billed in 2018
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes229$59,378$91
Hospital discharge day management, more than 30 minutes191$18,951$96
Initial hospital care with moderate level of medical decision making at least 75 minutes56$9,240$165
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes62$7,438$64
Hospital observation care on day of discharge11$704$64

2017: 4 services

Original Medicare services billed in 2017
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes248$77,472$90
Hospital discharge day management, more than 30 minutes187$19,101$94
Initial hospital care with moderate level of medical decision making at least 75 minutes39$6,737$164
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes55$6,576$62

2016: 5 services

Original Medicare services billed in 2016
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes207$55,027$86
Hospital discharge day management, more than 30 minutes176$16,319$93
Initial hospital care with moderate level of medical decision making at least 75 minutes64$10,782$168
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes80$10,478$62
Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes11$673$34

2015: 7 services

Original Medicare services billed in 2015
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes190$39,196$87
Initial hospital care with moderate level of medical decision making at least 75 minutes127$22,153$172
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes92$12,548$61
Hospital discharge day management, more than 30 minutes85$7,942$90
Hospital discharge day management, 30 minutes or less71$4,526$63
Initial hospital care with straightforward or low level of medical decision making, per day at least 40 minutes12$1,126$87
Ultrasound follow-up study32$550$17

2014: 1 service

Original Medicare services billed in 2014
Initial hospital care with moderate level of medical decision making at least 75 minutes45$7,706$171

Medicaid work

$7,308 in 2024

Medicaid paid $7,308 for 265 billed services this clinician did in 2024, up to 19 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.

Largest Medicaid services in 2024
SBSQ HOSPITAL IP/OBS CARE HIGH MDM 50 MINUTES251$6,986
Hospital inpatient or observation discharge day management; more than 30 minutes on the date of the encounter14$322
Medicaid work by year
2024265219$7,308
2023321220$11,659
2022403218$14,514
2021233218$7,843
202017116$310
2019187220$5,894
2018178217$3,352
See the largest Medicaid services in earlier years

2023

Largest Medicaid services in 2023
SBSQ HOSPITAL IP/OBS CARE HIGH MDM 50 MINUTES294$10,941
Hospital inpatient or observation discharge day management; more than 30 minutes on the date of the encounter27$718

2022

Largest Medicaid services in 2022
SBSQ HOSPITAL IP/OBS CARE HIGH MDM 50 MINUTES325$11,977
Hospital inpatient or observation discharge day management; more than 30 minutes on the date of the encounter78$2,537

2021

Largest Medicaid services in 2021
SBSQ HOSPITAL IP/OBS CARE HIGH MDM 50 MINUTES193$6,199
Hospital inpatient or observation discharge day management; more than 30 minutes on the date of the encounter40$1,644

2020

Largest Medicaid services in 2020
Hospital inpatient or observation discharge day management; more than 30 minutes on the date of the encounter17$310

2019

Largest Medicaid services in 2019
SBSQ HOSPITAL IP/OBS CARE HIGH MDM 50 MINUTES175$5,685
Hospital inpatient or observation discharge day management; more than 30 minutes on the date of the encounter12$208

2018

Largest Medicaid services in 2018
SBSQ HOSPITAL IP/OBS CARE HIGH MDM 50 MINUTES144$2,751
Hospital inpatient or observation discharge day management; more than 30 minutes on the date of the encounter34$601

Drugs they prescribed that Part D paid

$35,918

Pharmacies billed $35,918 in 2024.

This is pharmacy cost, not the office bill, and not what patients paid.

Opioids were 8% of their Part D prescriptions (30 of 359) in 2024. A higher opioid share than 9 in 10 peers; the typical internal medicine clinician is at 1%.

303 generic and fewer than 11 brand-name prescriptions · $35,918 in drug cost · 55 antibiotic prescriptions to 42 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.

Largest Part D drug costs
Hydrocodone-Acetaminophen16$164$10
Amoxicillin-Clavulanate Potass15$84$6
Atorvastatin12$47$3
Prednisone13$44$3
Pantoprazole12$38$3
See all 7 drugs
Every Part D drug this clinician prescribed
Hydrocodone-Acetaminophen16$164$10
Amoxicillin-Clavulanate Potass15$84$6
Atorvastatin12$47$3
Prednisone13$44$3
Pantoprazole12$38$3
Doxycycline Hyclate11$31$3
Carvedilol11$25$2

Year by year

Part D prescribing by year
20243591308% (30)None$35,918
20233811347% (27)None$49,066
20223551337% (26)13%$27,467
202125311110% (24)None$15,461
2020259915% (14)None$17,953
20193201237% (21)None$23,943
20184921315% (25)None$34,258
201735312310% (34)None$27,097
201630011210% (30)None$18,656
20153191099% (28)None$18,002
201411939None24%$4,435
2013113410% (0)None$6,955

Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.

See the drugs prescribed each year

2023: 10 drugs

Part D drugs prescribed in 2023
Eliquis16$10,518$657
Metoprolol16$320$20
Amoxicillin-Clavulanate Potass25$309$12
Atorvastatin21$262$12
Pantoprazole16$243$15
Clopidogrel12$212$18
Hydrocodone-Acetaminophen24$157$7
Metoprolol11$139$13
Prednisone15$139$9
Amlodipine Besylate17$135$8

2022: 8 drugs

Part D drugs prescribed in 2022
Pantoprazole23$277$12
Amoxicillin-Clavulanate Potass24$261$11
Ondansetron Odt11$193$18
Doxycycline Hyclate12$116$10
Hydrocodone-Acetaminophen16$115$7
Amlodipine Besylate11$99$9
Atorvastatin14$90$6
Metoprolol11$34$3

2021: 3 drugs

Part D drugs prescribed in 2021
Hydrocodone-Acetaminophen19$139$7
Amoxicillin-Clavulanate Potass18$128$7
Carvedilol12$70$6

2020: 5 drugs

Part D drugs prescribed in 2020
Pantoprazole11$139$13
Amoxicillin-Clavulanate Potass15$127$8
Atorvastatin11$113$10
Furosemide16$56$3
Carvedilol12$52$4

2019: 6 drugs

Part D drugs prescribed in 2019
Clopidogrel14$356$25
Atorvastatin21$324$15
Pantoprazole15$169$11
Carvedilol15$143$10
Hydrocodone-Acetaminophen11$97$9
Amoxicillin-Clavulanate Potass13$96$7

2018: 10 drugs

Part D drugs prescribed in 2018
Xarelto12$6,793$566
Clopidogrel29$551$19
Atorvastatin34$548$16
Carvedilol32$200$6
Hydrocodone-Acetaminophen18$178$10
Levofloxacin16$156$10
Pantoprazole15$140$9
Lisinopril16$106$7
Furosemide20$95$5
Amlodipine Besylate19$90$5

2017: 6 drugs

Part D drugs prescribed in 2017
Levofloxacin27$426$16
Hydrocodone-Acetaminophen19$119$6
Prednisone16$77$5
Carvedilol13$58$4
Lisinopril13$44$3
Furosemide14$38$3

2016: 6 drugs

Part D drugs prescribed in 2016
Hydrocodone-Acetaminophen21$277$13
Amoxicillin-Clavulanate Potass13$259$20
Levofloxacin21$126$6
Amlodipine Besylate13$99$8
Prednisone16$64$4
Carvedilol12$63$5

2015: 7 drugs

Part D drugs prescribed in 2015
Tamsulosin11$494$45
Pantoprazole18$365$20
Clopidogrel16$320$20
Hydrocodone-Acetaminophen21$241$11
Metoprolol17$238$14
Lisinopril23$159$7
Levofloxacin20$157$8

2014: 1 drug

Part D drugs prescribed in 2014
Lisinopril13$162$12

Money from drug and device companies

$122 in 2025

Industry payments by year
202511None$122
201923None$127

Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.

A payment is not proof that care is biased.

Payments by company
Sanofi-Aventis U.S.Tzield$122
1 payment
  • Meals for Tzield · 2025-09-18 · $122
See the published payment
Every published payment
Sanofi-Aventis U.S.Meals · 2025-09-18Tzield$122
See earlier years (2019)

2019: $127

Payments by company in 2019
Janssen PharmaceuticalsXarelto$95
1 payment
  • Meals for Xarelto · 2019-06-25 · $95
AstraZeneca Pharmaceuticals LPLokelma$31
2 payments
  • Meals for Lokelma · 2019-09-19 · $18
  • Meals for Lokelma · 2019-05-25 · $13

Professional record

NPI
1417213422
Licence
CA A124000California A124000: Current · expires 2028-07-31
Trained
Michigan State University College of Human Medicine, 2011
Gender
Male
More record details
Sole proprietor
No
Taxonomy
Hospitalist (208M00000X); Internal medicine (207R00000X)
Mailing address
3687 Mt Diablo Blvd, Suite 200, Lafayette, CA, 94549
NPI first listed
2012-04-03
NPI last updated
2017-05-18

This is when the NPI record was last certified, not a medical board exam.