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Daniel Chelliah, MD

Infectious Disease · Mountain View

NPI 1174847933

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
2
2 carriers
Offices
3

Offices

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

Looking this up.

Hospitals listed: 757662 · El Camino Health. That is not proof they admit you there this week.

Plans that list them

2 plans · 2 carriers

A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Chelliah’s office to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.

2 of 2 plans

Plans whose provider directory lists this clinician
Alignment Health Sutter Advantage +More (HMO)Alignment Health PlanListedOct 3, 2026
DualConnect (HMO D-SNP)Santa Clara Family Health PlanListedSep 1, 2026

California Medical Board record

Licence A121423 · Current

Licensed to practise in California · since 2012 · expires 2028-02-29 · Loma Linda 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.

  • 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
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%

Original Medicare doctor bills

$83,575

Medicare paid this office $83,575 for 213 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 minutes133$41,542$106
Long return visit (40+ min)66$16,479$165
Initial hospital care with moderate level of medical decision making at least 75 minutes66$10,823$155
New patient visit (60+ min)24$4,453$186
Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes38$2,239$44
See all 7 services
Every Original Medicare service billed
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes133$41,542$106
Long return visit (40+ min)66$16,479$165
Initial hospital care with moderate level of medical decision making at least 75 minutes66$10,823$155
New patient visit (60+ min)24$4,453$186
Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes38$2,239$44
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes14$1,203$71
Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's13$225$15

Who their Medicare patients are

213 Original Medicare patients in 2024. Average age 77 · Under 65 10% · 85 and older 23% · Women 47% · Also on Medicaid 26% · Health risk score 2.57. At or below the middle of the specialty; the typical infectious disease clinician is at 3.

Conditions among them: High blood pressure 75% · Diabetes 43% · Chronic kidney disease 43% · Atrial fibrillation 40% · Coronary heart disease 39% · Heart failure 35% · Depression 35% · COPD 33% · Dementia 28% · Cancer 26% · Stroke 17%.

The office billed $299,905, Medicare allowed $106,531 and paid $83,575; for 721 services of 18 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
2024213721772.57$299,905$83,575
2023191651772.35$272,966$81,137
2022227872752.78$327,459$92,317
2021246788762.49$313,748$95,544
2020209715752.86$233,138$78,426
20192621,190762.78$324,183$97,691
20182481,041762.87$281,908$87,157
2017217769752.72$254,432$79,922
201670185752.38$54,022$17,194

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 minutes118$37,300$111
Long return visit (40+ min)66$20,743$170
Initial hospital care with moderate level of medical decision making at least 75 minutes65$10,673$155
New patient visit (60+ min)23$4,509$196
Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes28$2,077$47
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes19$1,744$73

2022: 7 services

Original Medicare services billed in 2022
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes158$47,694$94
Initial hospital care with moderate level of medical decision making at least 75 minutes89$17,039$181
Long return visit (40+ min)55$15,635$165
New patient visit (60+ min)26$5,326$205
Telephone medical discussion with physician, 21-30 minutes12$1,928$92
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes16$1,409$74
Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes16$873$35

2021: 6 services

Original Medicare services billed in 2021
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes158$37,533$97
Long return visit (40+ min)60$20,908$173
Initial hospital care with moderate level of medical decision making at least 75 minutes99$19,880$184
New patient visit (60+ min)34$7,281$214
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes27$3,969$78
Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes29$1,390$38

2020: 7 services

Original Medicare services billed in 2020
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes123$39,723$102
Initial hospital care with moderate level of medical decision making at least 75 minutes81$16,979$197
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes51$7,076$81
Long return visit (40+ min)24$4,586$143
Telephone medical discussion with physician, 21-30 minutes16$2,408$109
Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes34$1,933$40
Return visit (30+ min)12$1,317$110

2019: 6 services

Original Medicare services billed in 2019
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes183$55,548$94
Initial hospital care with moderate level of medical decision making at least 75 minutes95$18,425$184
Long return visit (40+ min)77$15,179$132
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes27$1,945$61
Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes36$1,355$35
Return visit (30+ min)11$1,153$105

2018: 6 services

Original Medicare services billed in 2018
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes153$44,061$93
Initial hospital care with moderate level of medical decision making at least 75 minutes82$16,009$182
Long return visit (40+ min)71$15,927$133
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes33$2,811$64
Return visit (30+ min)16$1,721$101
Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes24$979$35

2017: 7 services

Original Medicare services billed in 2017
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes125$38,344$93
Initial hospital care with moderate level of medical decision making at least 75 minutes76$15,591$181
Long return visit (40+ min)65$12,485$127
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes41$4,599$65
Return visit (30+ min)28$3,546$101
New patient visit (60+ min)14$2,663$190
Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes11$419$35

2016: 4 services

Original Medicare services billed in 2016
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes26$5,926$93
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes33$3,922$64
Long return visit (40+ min)17$3,096$135
Initial hospital care with moderate level of medical decision making at least 75 minutes12$2,163$180

Medicaid work

$1,070 in 2024

Medicaid paid $1,070 for 53 billed services this clinician did in 2024, up to 13 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 MINUTES53$1,070
Medicaid work by year
202453113$1,070
202320112$2,583
202265112$3,625
201930112$781
See the largest Medicaid services in earlier years

2023

Largest Medicaid services in 2023
SBSQ HOSPITAL IP/OBS CARE HIGH MDM 50 MINUTES20$2,583

2022

Largest Medicaid services in 2022
SBSQ HOSPITAL IP/OBS CARE HIGH MDM 50 MINUTES65$3,625

2019

Largest Medicaid services in 2019
SBSQ HOSPITAL IP/OBS CARE HIGH MDM 50 MINUTES30$781

Drugs they prescribed that Part D paid

$471,882

Pharmacies billed $471,882 in 2024.

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

Opioids were 0% of their Part D prescriptions (0 of 396) in 2024. At or below the middle of the specialty; the typical infectious disease clinician is at 0%.

300 generic and 96 brand-name prescriptions · $471,882 in drug cost · 192 antibiotic prescriptions to 52 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
Genvoya28$140,305$5,011
Biktarvy25$106,819$4,273
Odefsey11$37,781$3,435
Rifampin41$2,627$64
Ethambutol24$1,795$75
See all 11 drugs
Every Part D drug this clinician prescribed
Genvoya28$140,305$5,011
Biktarvy25$106,819$4,273
Odefsey11$37,781$3,435
Rifampin41$2,627$64
Ethambutol24$1,795$75
Azithromycin19$693$36
Amoxicillin23$416$18
Cephalexin18$384$21
Ceftriaxone13$313$24
Penicillin V21$231$11
Isoniazid12$82$7

Year by year

Part D prescribing by year
2024396800% (0)24%$471,882
2023380750% (0)8%$260,082
2022411680% (0)None$126,812
2021604860% (0)7%$126,327
2020224450% (0)6%$60,220
2019253560% (0)10%$69,528
201824752None8%$34,971
2017231610% (0)13%$26,523
2016314120% (0)47%$162,902
2015275170% (0)63%$177,094
2014167280% (0)None$42,727
201311117None11%$12,253

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

See the drugs prescribed each year

2023: 9 drugs

Part D drugs prescribed in 2023
Rifampin49$3,773$77
Ampicillin21$3,552$169
Ethambutol19$1,863$98
Azithromycin28$1,514$54
Vancomycin13$1,500$115
Ceftriaxone26$762$29
Amoxicillin32$442$14
Cephalexin19$284$15
Isoniazid32$236$7

2022: 11 drugs

Part D drugs prescribed in 2022
Rifampin43$3,175$74
Ampicillin30$3,151$105
Ethambutol32$2,635$82
Azithromycin40$1,538$38
Ceftriaxone34$1,208$36
Clindamycin12$640$53
Amoxicillin22$381$17
Pantoprazole25$356$14
Penicillin V13$179$14
Isoniazid13$144$11
Mupirocin11$95$9

2021: 18 drugs

Part D drugs prescribed in 2021
Oxacillin19$13,561$714
Cefepime29$10,279$354
Ceftriaxone48$7,932$165
Pyrazinamide22$5,326$242
Rifampin81$5,270$65
Meropenem16$5,181$324
Ampicillin20$3,526$176
Ethambutol45$3,351$74
Vancomycin14$2,823$202
Azithromycin36$1,559$43
Fluconazole16$1,130$71
Cefazolin20$1,109$55
Pantoprazole24$417$17
Ciprofloxacin14$354$25
Isoniazid32$258$8
Sulfamethoxazole-Trimethoprim11$210$19
Penicillin V14$203$15
Mupirocin14$151$11

2020: 8 drugs

Part D drugs prescribed in 2020
Meropenem17$4,237$249
Vancomycin21$3,746$178
Rifampin13$914$70
Ethambutol18$792$44
Ceftriaxone16$548$34
Sulfamethoxazole-Trimethoprim12$235$20
Penicillin V12$161$13
Mupirocin11$104$9

2019: 6 drugs

Part D drugs prescribed in 2019
Rifampin24$1,704$71
Azithromycin18$1,289$72
Ethambutol30$1,233$41
Ceftriaxone21$1,120$53
Penicillin V13$295$23
Isoniazid13$80$6

2018: 7 drugs

Part D drugs prescribed in 2018
Pyrazinamide14$3,179$227
Ethambutol31$2,554$82
Rifampin29$2,204$76
Ampicillin11$1,565$142
Ceftriaxone17$1,529$90
Penicillin V15$366$24
Isoniazid24$200$8

2017: 8 drugs

Part D drugs prescribed in 2017
Vancomycin12$4,062$339
Rifampin35$2,676$76
Ethambutol11$995$90
Azithromycin12$562$47
Ceftriaxone11$462$42
Sodium Chloride14$265$19
Isoniazid32$194$6
Ciprofloxacin12$133$11

2016: 13 drugs

Part D drugs prescribed in 2016
Truvada30$44,624$1,487
Atripla11$26,615$2,420
Reyataz13$18,039$1,388
Intelence12$13,244$1,104
Viread12$11,988$999
Epivir12$5,003$417
Norvir13$3,404$262
Omega-3 Acid Ethyl Esters13$2,452$189
Pravastatin20$302$15
Tamsulosin12$236$20
Sucralfate11$221$20
Hydrochlorothiazide22$111$5
Metformin22$91$4

2015: 11 drugs

Part D drugs prescribed in 2015
Truvada38$53,552$1,409
Atripla11$28,607$2,601
Reyataz17$22,110$1,301
Intelence13$14,448$1,111
Viread14$13,333$952
Norvir19$5,736$302
Epivir13$5,561$428
Pravastatin11$277$25
Sucralfate11$250$23
Hydrochlorothiazide23$121$5
Benazepril11$47$4

2014: 3 drugs

Part D drugs prescribed in 2014
Simvastatin15$160$11
Benazepril11$127$12
Lisinopril11$72$7

Money from drug and device companies

$69 in 2025

Industry payments by year
202523None$69
202011None$16

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
Gilead SciencesBiktarvy$42
2 payments
  • Meals for Biktarvy · 2025-11-24 · $23
  • Meals for Biktarvy · 2025-10-02 · $19
Paratek PharmaceuticalsNuzyra$27
1 payment
  • Meals for Nuzyra · 2025-09-29 · $27
See all 3 published payments
Every published payment
Gilead SciencesMeals · 2025-11-24Biktarvy$23
Gilead SciencesMeals · 2025-10-02Biktarvy$19
Paratek PharmaceuticalsMeals · 2025-09-29Nuzyra$27
See earlier years (2020)

2020: $16

Payments by company in 2020
InsmedNone$16
1 payment
  • Education · 2020-12-03 · $16

Professional record

NPI
1174847933
Licence
CA A121423California A121423: Current · expires 2028-02-29
Trained
Loma Linda University School of Medicine, 2010
Video visits
Lists video visits
Gender
Male
More record details
Sole proprietor
No
Taxonomy
Federal specialty code 207RI0200X (207RI0200X); Student in a training program (390200000X)
Mailing address
2350 W. El Camino Real, 2nd Floor, Mountain View, CA, 94040
NPI first listed
2010-03-23
NPI last updated
2016-10-07

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