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Mahsa Esfahani, MD

Hospitalist · Mountain View

NPI 1447205547

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
Not verified
Not the same as out of network.
Office
1

Offices

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

Looking this up.

Hospitals listed: El Camino Health · Good Samaritan Hospital. 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. Esfahani’s office at (650) 691-6174 to ask if they take your plan before you enroll.

California Medical Board record

Licence A86986 · Current

Licensed to practise in California · since 2004 · expires 2028-05-31 · St. George'S University School of Medicine.

No disciplinary actions, convictions, malpractice judgments or citations in this record.

Hospitals they work in

2 hospitals

These rate the hospital, not this clinician. Most measures at most hospitals are no different from the national rate.

  • El Camino HealthMountain View, CAAcute Care Hospital · Government - Hospital District or Authority · Has an emergency department · Birthing-friendlyPart of El Camino Health, which runs 2 hospitalsPatients rate it 4 of 5 · 80% would definitely recommend it
    Overall rating: 4 of 5 starsBetter than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.291, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.393, Oct 2024 – Sep 2025Better than the national rate — MRSA Bacteremia: 0, Oct 2024 – Sep 2025
  • Good Samaritan HospitalSan Jose, CAAcute Care Hospital · Proprietary · Has an emergency department · Birthing-friendlyPart of HCA Healthcare, which runs 185 hospitals in 19 statesPatients rate it 2 of 5 · 67% would definitely recommend it
    Overall rating: 2 of 5 starsBetter than the national rate — Clostridium Difficile (C.Diff): 0.337, Oct 2024 – Sep 2025
See every measure and the patient survey for El Camino Health

Behind the star rating — Deaths: 3 better, 5 the same, 0 worse of 8 measures. Safety: 3 better, 5 the same, 0 worse of 8 measures. Readmissions: 1 better, 9 the same, 1 worse of 11 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.

Every scored measure at El Camino Health
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.291BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.393BetterOct 2024 – Sep 2025
MRSA BacteremiaInfections0BetterOct 2024 – Sep 2025
Abdominopelvic accidental puncture or laceration rateComplications and deaths0.96 (0.12 to 1.79) · 2,340 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths1.02 (0.76 to 1.28)No differentJul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths167.38 (125.03 to 209.73) · 96 casesNo differentJul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths2.6 · 68 casesNoneJul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths7.1 · 185 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths11.8 · 200 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths8.9 · 814 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths13 · 842 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths9.6 · 361 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths2.6 · 4,633 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.16 (0 to 0.34) · 11,474 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.27 (0.1 to 0.45) · 11,626 casesNo differentJul 2022 – Jun 2024
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths3.14 (1.39 to 4.9) · 2,814 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths2 (0.61 to 3.39) · 1,327 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2.11 (0.8 to 3.43) · 2,641 casesNo differentJul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths9.39 (4.18 to 14.6) · 1,287 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths6.57 (3.47 to 9.68) · 1,308 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths2.14 (0.71 to 3.57) · 827 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.6 (0.05 to 1.15) · 9,460 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths4.5 · 122 casesNoneApr 2023 – Mar 2025
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.993No differentOct 2024 – Sep 2025
SSI - Abdominal HysterectomyInfections0.706No differentOct 2024 – Sep 2025
SSI - Colon SurgeryInfections1.376No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits15.5 · 218 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits19.5 · 962 casesNoneJul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits3.8 · 200 casesNoneJul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits-17 · 922 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits18.6 · 860 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits18.7 · 827 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits6.1 (4.5 to 8.2) · 313 casesNo differentJan 2024 – Dec 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits13.4 (10.6 to 16.5) · 313 casesNo differentJan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits6.1 · 144 casesNoneJul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits10.3 · 80 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits20.7 · 237 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits12.8 (10 to 16.1) · 1,639 casesNo differentJan 2022 – Dec 2024
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits0.9 (0.8 to 1.1) · 1,619 casesNo differentJan 2024 – Dec 2024

What patients said (1,535 patients answered, 22% of those asked)

Patient survey stars by topic at El Camino Health
Cleanliness4
Nurse communication4
Doctor communication4
Communication about medicines3
Discharge information3
Overall hospital rating4
Quietness2
Recommend hospital5
Share of patients giving the best answer at El Camino Health
Room was "always" clean75%
Nurses "always" communicated well79%
Doctors "always" communicated well81%
Staff "always" explained61%
Yes, staff "did" give patients this information86%
Yes, staff "did" give patients information about help after discharge86%
Doctors "always" explained things so they could understand76%
Doctors "always" listened carefully80%
Doctors "always" treated them with courtesy and respect87%
Patients who gave a rating of "9" or "10" (high)76%
Staff "always" explained new medications76%
Nurses "always" explained things so they could understand75%
Nurses "always" listened carefully76%
Nurses "always" treated them with courtesy and respect87%
"Always" quiet at night47%
"YES", patients would definitely recommend the hospital80%
Staff "always" explained possible side effects46%
Yes, staff "did" give patients information about possible symptoms86%
See every measure and the patient survey for Good Samaritan Hospital

Behind the star rating — Deaths: 0 better, 8 the same, 0 worse of 8 measures. Safety: 1 better, 6 the same, 1 worse of 8 measures. Readmissions: 0 better, 5 the same, 4 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 Good Samaritan Hospital
Clostridium Difficile (C.Diff)Infections0.337BetterOct 2024 – Sep 2025
Abdominopelvic accidental puncture or laceration rateComplications and deaths0.75 (0 to 1.67) · 1,340 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths0.84 (0.54 to 1.14)No differentJul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths143.59 (98.7 to 188.49) · 98 casesNo differentJul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths1.7 · 45 casesNoneJul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths7.1 · 100 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths12.7 · 270 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths11.3 · 573 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths15.6 · 820 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths8.5 · 482 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths3.3 · 3,711 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.12 (0 to 0.3) · 8,866 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.2 (0.01 to 0.38) · 9,051 casesNo differentJul 2022 – Jun 2024
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths2.65 (0.74 to 4.56) · 1,929 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths1.8 (0.21 to 3.39) · 670 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2.33 (0.88 to 3.78) · 1,836 casesNo differentJul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths6.73 (0 to 13.46) · 669 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths7.58 (3.96 to 11.19) · 654 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.59 (0.13 to 3.04) · 496 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.27 (0 to 0.87) · 7,373 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths4.1 · 152 casesNoneApr 2023 – Mar 2025
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections1.08No differentOct 2024 – Sep 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.542No differentOct 2024 – Sep 2025
MRSA BacteremiaInfections0.484No differentOct 2024 – Sep 2025
SSI - Colon SurgeryInfections1.565No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits15.8 · 327 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits24.2 · 703 casesNoneJul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits61.1 · 289 casesNoneJul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits36.3 · 665 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits25.4 · 856 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits19 · 978 casesNoneJul 2023 – Jun 2025
Rate of readmission after hip/knee replacementUnplanned return visits6.3 · 144 casesNoneJul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits12.3 · 46 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits21.2 · 135 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits13.8 (10.1 to 18.6) · 129 casesNo differentJan 2022 – Dec 2024
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits1.2 (0.9 to 1.5) · 531 casesNo differentJan 2024 – Dec 2024

What patients said (704 patients answered, 24% of those asked)

Patient survey stars by topic at Good Samaritan Hospital
Cleanliness3
Nurse communication3
Doctor communication2
Communication about medicines2
Discharge information3
Overall hospital rating2
Quietness1
Recommend hospital3
Share of patients giving the best answer at Good Samaritan Hospital
Room was "always" clean66%
Nurses "always" communicated well75%
Doctors "always" communicated well71%
Staff "always" explained54%
Yes, staff "did" give patients this information83%
Yes, staff "did" give patients information about help after discharge81%
Doctors "always" explained things so they could understand66%
Doctors "always" listened carefully69%
Doctors "always" treated them with courtesy and respect78%
Patients who gave a rating of "9" or "10" (high)63%
Staff "always" explained new medications68%
Nurses "always" explained things so they could understand69%
Nurses "always" listened carefully73%
Nurses "always" treated them with courtesy and respect82%
"Always" quiet at night38%
"YES", patients would definitely recommend the hospital67%
Staff "always" explained possible side effects40%
Yes, staff "did" give patients information about possible symptoms86%

Original Medicare doctor bills

$76,568

Medicare paid this office $76,568 for 281 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 minutes142$35,011$102
Hospital discharge day management, more than 30 minutes138$14,803$101
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes78$14,693$70
Initial hospital care with moderate level of medical decision making at least 75 minutes55$8,619$151
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes22$2,547$116

Who their Medicare patients are

281 Original Medicare patients in 2024. Average age 82 · 85 and older 41% · Women 57% · Also on Medicaid 12% · Health risk score 1.91. At or below the middle of the specialty; the typical hospitalist clinician is at 2.49.

Conditions among them: High blood pressure 75% · Coronary heart disease 49% · Chronic kidney disease 44% · Heart failure 43% · Atrial fibrillation 43% · Diabetes 36% · Stroke 32% · Depression 30% · Dementia 30% · Cancer 27% · COPD 22%.

The office billed $287,719, Medicare allowed $98,986 and paid $76,568; for 795 services of 8 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
2024281795821.91$287,719$76,568
20233601,035811.79$389,771$107,051
2022283892822.23$332,905$90,209
2021295872802.14$351,885$93,940
2020239836822.32$336,637$91,976
2019274970812.31$381,097$102,372
2018238967812.36$374,308$95,750
20173101,082802.27$340,143$107,381
2016238850812.36$261,156$83,117
20153251,145802.33$345,878$124,200
2014279978792.15$278,164$96,093
2013218839802.08$173,136$84,416

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: 6 services

Original Medicare services billed in 2023
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes150$46,712$109
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes108$19,423$73
Initial hospital care with moderate level of medical decision making at least 75 minutes118$18,814$157
Hospital discharge day management, more than 30 minutes134$15,031$106
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes48$5,750$115
Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes12$1,171$45

2022: 5 services

Original Medicare services billed in 2022
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes195$50,823$96
Hospital discharge day management, more than 30 minutes175$18,869$101
Initial hospital care with moderate level of medical decision making at least 75 minutes74$13,759$183
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes24$4,719$66
Hospital observation care on day of discharge11$734$67

2021: 3 services

Original Medicare services billed in 2021
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes210$50,716$96
Initial hospital care with moderate level of medical decision making at least 75 minutes103$19,732$184
Hospital discharge day management, more than 30 minutes173$19,377$100

2020: 3 services

Original Medicare services billed in 2020
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes174$49,826$97
Initial hospital care with moderate level of medical decision making at least 75 minutes104$21,360$186
Hospital discharge day management, more than 30 minutes178$20,374$100

2019: 3 services

Original Medicare services billed in 2019
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes189$53,137$94
Hospital discharge day management, more than 30 minutes221$26,803$99
Initial hospital care with moderate level of medical decision making at least 75 minutes100$19,280$182

2018: 3 services

Original Medicare services billed in 2018
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes180$57,003$90
Hospital discharge day management, more than 30 minutes180$22,098$95
Initial hospital care with moderate level of medical decision making at least 75 minutes78$15,995$174

2017: 3 services

Original Medicare services billed in 2017
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes220$57,844$88
Hospital discharge day management, more than 30 minutes230$25,357$92
Initial hospital care with moderate level of medical decision making at least 75 minutes126$23,194$171

2016: 3 services

Original Medicare services billed in 2016
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes184$49,773$89
Hospital discharge day management, more than 30 minutes171$18,771$93
Initial hospital care with moderate level of medical decision making at least 75 minutes79$14,102$172

2015: 3 services

Original Medicare services billed in 2015
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes258$72,088$97
Hospital discharge day management, more than 30 minutes236$27,966$102
Initial hospital care with moderate level of medical decision making at least 75 minutes112$23,327$190

2014: 4 services

Original Medicare services billed in 2014
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes151$40,295$92
Initial hospital care with moderate level of medical decision making at least 75 minutes114$21,700$179
Hospital discharge day management, more than 30 minutes184$19,791$97
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes63$12,554$64

2013: 3 services

Original Medicare services billed in 2013
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes164$46,851$90
Hospital discharge day management, more than 30 minutes173$19,350$94
Initial hospital care with moderate level of medical decision making at least 75 minutes89$17,020$170

Drugs they prescribed that Part D paid

$7,389

Pharmacies billed $7,389 in 2024.

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

223 generic and 13 brand-name prescriptions · $7,389 in drug cost · 29 antibiotic prescriptions to 25 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
Pantoprazole16$110$7
Atorvastatin16$86$5
Amlodipine Besylate18$82$5
Metoprolol11$26$2
Losartan12$18$2

Year by year

Part D prescribing by year
2024236115None6%$7,389
20232571208% (21)9%$15,116
20222911255% (13)12%$19,740
2021299122NoneNone$43,502
20202881134% (11)None$29,429
2019259121None15%$12,806
20182231105% (12)11%$12,412
20172761204% (11)16%$17,847
201620194None15%$7,560
2015219978% (18)16%$8,101
201412063None18%$4,374
201314367None16%$7,993

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

See the drugs prescribed each year

2023: 4 drugs

Part D drugs prescribed in 2023
Eliquis15$9,763$651
Pantoprazole12$146$12
Metoprolol19$76$4
Furosemide12$25$2

2022: 9 drugs

Part D drugs prescribed in 2022
Eliquis20$12,715$636
Amoxicillin-Clavulanate Potass15$217$14
Cefdinir14$110$8
Atorvastatin12$103$9
Metoprolol12$46$4
Prednisone12$45$4
Pantoprazole11$42$4
Furosemide11$25$2
Amlodipine Besylate11$23$2

2021: 4 drugs

Part D drugs prescribed in 2021
Prezcobix13$28,693$2,207
Metoprolol13$59$5
Furosemide14$36$3
Amlodipine Besylate15$31$2

2020: 5 drugs

Part D drugs prescribed in 2020
Cefdinir17$312$18
Tamsulosin12$97$8
Amlodipine Besylate18$79$4
Metoprolol12$67$6
Atorvastatin11$64$6

2019: 4 drugs

Part D drugs prescribed in 2019
Eliquis14$5,144$367
Cefdinir21$366$17
Amlodipine Besylate14$58$4
Furosemide14$53$4

2018: 3 drugs

Part D drugs prescribed in 2018
Cefdinir24$504$21
Amlodipine Besylate13$54$4
Furosemide12$53$4

2017: 7 drugs

Part D drugs prescribed in 2017
Pyridostigmine Bromide Er13$4,998$384
Cefdinir16$380$24
Furosemide26$184$7
Levofloxacin16$120$7
Hydralazine11$100$9
Prednisone14$62$4
Amlodipine Besylate15$50$3

2016: 3 drugs

Part D drugs prescribed in 2016
Levofloxacin17$199$12
Amoxicillin-Clavulanate Potass12$173$14
Lisinopril12$51$4

2015: 4 drugs

Part D drugs prescribed in 2015
Levofloxacin16$238$15
Prednisone11$80$7
Metoprolol16$63$4
Amlodipine Besylate12$54$5

2014: 1 drug

Part D drugs prescribed in 2014
Levofloxacin12$114$9

2013: 1 drug

Part D drugs prescribed in 2013
Levofloxacin13$180$14

Professional record

NPI
1447205547
Licence
CA A86986California A86986: Current · expires 2028-05-31
Gender
Female
More record details
Sole proprietor
No
Taxonomy
Hospitalist (208M00000X); Internal medicine (207R00000X)
Mailing address
325 Distel Cir, Los Altos, CA, 94022
NPI first listed
2006-05-24
NPI last updated
2022-11-02
NPI record certified
2022-11-02

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