Pam Grewall, MD | UniHealth

Offices

1 location · County of Santa Clara · 1,000 clinicians in this group

Looking this up.

Hospitals listed: Santa Clara Valley 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. Grewall’s office at (408) 885-5000 to ask if they take your plan before you enroll.

California Medical Board record

Licence A78443 · Current

Licensed to practise in California · since 2002 · expires 2027-10-31 · New York Medical College.

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.

Santa Clara Valley Medical CenterSan Jose, CAAcute Care Hospital · Government - Local · Has an emergency department · Birthing-friendlyPart of Santa Clara Valley Health and Hospital System, which runs 3 hospitalsPatients rate it 3 of 5 · 70% would definitely recommend it
Overall rating: 2 of 5 starsWorse than the national rate — SSI - Colon Surgery: 2.572, Oct 2024 – Sep 2025Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.563, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.256, Oct 2024 – Sep 2025Better than the national rate — MRSA Bacteremia: 0.369, Oct 2024 – Sep 2025

See every measure and the patient survey for Santa Clara Valley Medical Center

Behind the star rating — Deaths: 2 better, 6 the same, 0 worse of 8 measures. Safety: 2 better, 5 the same, 1 worse of 8 measures. Readmissions: 0 better, 10 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.

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Every scored measure at Santa Clara Valley Medical Center

SSI - Colon SurgeryInfections	2.572	Worse	Oct 2024 – Sep 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections	0.563	Better	Oct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections	0.256	Better	Oct 2024 – Sep 2025
MRSA BacteremiaInfections	0.369	Better	Oct 2024 – Sep 2025
Abdominopelvic accidental puncture or laceration rateComplications and deaths	1.25 (0.3 to 2.2) · 1,535 cases	No different	Jul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths	1.07 (0.76 to 1.38)	No different	Jul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths	214.59 (167.38 to 261.8) · 108 cases	No different	Jul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths	2.8 · 41 cases	None	Jul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths	6 · 141 cases	None	Jul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths	10.2 · 124 cases	None	Jul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths	8.3 · 501 cases	None	Jul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths	14.9 · 653 cases	None	Jul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths	10.1 · 348 cases	None	Jul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths	3 · 4,502 cases	None	Jul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths	0.24 (0.04 to 0.43) · 9,014 cases	No different	Jul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths	0.34 (0.15 to 0.52) · 9,216 cases	No different	Jul 2022 – Jun 2024
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths	4.54 (2.51 to 6.58) · 1,421 cases	No different	Jul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths	1.54 (0 to 3.2) · 288 cases	No different	Jul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths	2.11 (0.66 to 3.56) · 1,446 cases	No different	Jul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths	11.61 (4.09 to 19.14) · 294 cases	No different	Jul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths	7.29 (3.39 to 11.2) · 299 cases	No different	Jul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths	1.9 (0.45 to 3.36) · 333 cases	No different	Jul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths	0.23 (0 to 0.78) · 7,538 cases	No different	Jul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths	5.4 · 94 cases	None	Apr 2023 – Mar 2025
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections	0.735	No different	Oct 2024 – Sep 2025
SSI - Abdominal HysterectomyInfections	2.573	No different	Oct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits	14.6 · 185 cases	None	Jul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits	22.1 · 951 cases	None	Jul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits	56.3 · 128 cases	None	Jul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits	6.4 · 644 cases	None	Jul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits	1.3 · 699 cases	None	Jul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits	16.3 · 921 cases	None	Jul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits	5.7 (3.9 to 8.1) · 226 cases	No different	Jan 2024 – Dec 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits	12.6 (9.4 to 16.5) · 226 cases	No different	Jan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits	5.4 · 94 cases	None	Jul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits	11.4 · 54 cases	None	Jul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits	20.3 · 242 cases	None	Jul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits	13.2 (9.9 to 17.4) · 702 cases	No different	Jan 2022 – Dec 2024
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits	1 (0.7 to 1.4) · 195 cases	No different	Jan 2024 – Dec 2024

What patients said (4,032 patients answered, 29% of those asked)

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Patient survey stars by topic at Santa Clara Valley Medical Center

Cleanliness	3
Nurse communication	3
Doctor communication	3
Communication about medicines	3
Discharge information	2
Overall hospital rating	3
Quietness	2
Recommend hospital	4

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Share of patients giving the best answer at Santa Clara Valley Medical Center

Room was "always" clean	70%
Nurses "always" communicated well	73%
Doctors "always" communicated well	76%
Staff "always" explained	57%
Yes, staff "did" give patients this information	82%
Yes, staff "did" give patients information about help after discharge	82%
Doctors "always" explained things so they could understand	71%
Doctors "always" listened carefully	74%
Doctors "always" treated them with courtesy and respect	82%
Patients who gave a rating of "9" or "10" (high)	67%
Staff "always" explained new medications	71%
Nurses "always" explained things so they could understand	71%
Nurses "always" listened carefully	69%
Nurses "always" treated them with courtesy and respect	80%
"Always" quiet at night	43%
"YES", patients would definitely recommend the hospital	70%
Staff "always" explained possible side effects	44%
Yes, staff "did" give patients information about possible symptoms	83%

Original Medicare doctor bills

$39,241

Medicare paid this office $39,241 for 196 people.

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

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Largest Original Medicare bills

Subsequent hospital care with moderate levelof medical decision making at least 50 minutes	97	$18,529	$102
Hospital discharge day management, more than 30 minutes	69	$6,982	$101
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes	63	$6,631	$68
Initial hospital care with moderate level of medical decision making at least 75 minutes	49	$6,280	$126

Who their Medicare patients are

196 Original Medicare patients in 2024. Average age 76 · Under 65 14% · 85 and older 26% · Women 54% · Also on Medicaid 66% · Health risk score 2.98. Sicker patients than 9 in 10 peers; the typical internal medicine clinician is at 1.76.

Conditions among them: High blood pressure 75% · Diabetes 59% · Chronic kidney disease 58% · Coronary heart disease 54% · Heart failure 47% · Atrial fibrillation 42% · Dementia 39% · COPD 28% · Depression 28% · Stroke 22% · Cancer 20%.

The office billed $340,902, Medicare allowed $52,225 and paid $39,241; for 409 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

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Original Medicare by year

2024	196	409	76	2.98	$340,902	$39,241
2023	180	359	78	2.73	$268,749	$36,049
2022	135	328	75	3.00	$245,439	$30,776
2021	123	280	78	3.01	$229,615	$28,601
2020	195	507	72	2.71	$239,956	$53,435
2019	238	751	70	2.89	$320,542	$74,617
2018	249	892	70	2.66	$366,364	$85,612
2017	237	828	69	3.06	$345,019	$81,957
2016	272	914	70	2.47	$383,441	$90,592
2015	245	889	69	2.68	$366,434	$86,502
2014	231	813	69	2.36	$336,244	$78,738
2013	151	408	67	2.99	$178,159	$43,258

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

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Original Medicare services billed in 2023

Subsequent hospital care with moderate levelof medical decision making at least 50 minutes	90	$16,121	$104
Initial hospital care with moderate level of medical decision making at least 75 minutes	45	$6,918	$154
Hospital discharge day management, more than 30 minutes	68	$6,897	$99
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes	61	$5,822	$70

2022: 5 services

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Original Medicare services billed in 2022

Subsequent hospital care with moderate levelof medical decision making at least 50 minutes	81	$16,448	$91
Hospital discharge day management, more than 30 minutes	52	$4,759	$92
Initial hospital care with moderate level of medical decision making at least 75 minutes	13	$2,476	$177
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes	20	$2,391	$61
Initial hospital observation care per day, typically 70 minutes	13	$2,061	$159

2021: 6 services

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Original Medicare services billed in 2021

Subsequent hospital care with moderate levelof medical decision making at least 50 minutes	65	$13,906	$92
Hospital discharge day management, more than 30 minutes	46	$4,495	$98
Initial hospital care with moderate level of medical decision making at least 75 minutes	20	$3,620	$181
Initial hospital observation care per day, typically 70 minutes	18	$2,952	$164
Hospital observation care on day of discharge	21	$1,327	$63
Follow-up observation care per day, typically 35 minutes	13	$1,307	$87

2020: 5 services

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Original Medicare services billed in 2020

Subsequent hospital care with moderate levelof medical decision making at least 50 minutes	111	$31,010	$94
Initial hospital care with moderate level of medical decision making at least 75 minutes	55	$10,050	$179
Hospital discharge day management, more than 30 minutes	71	$7,173	$98
Initial hospital observation care per day, typically 70 minutes	13	$1,855	$143
Hospital observation care on day of discharge	16	$1,072	$67

2019: 5 services

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Original Medicare services billed in 2019

Subsequent hospital care with moderate levelof medical decision making at least 50 minutes	178	$50,949	$93
Hospital discharge day management, more than 30 minutes	120	$12,494	$98
Initial hospital care with moderate level of medical decision making at least 75 minutes	31	$5,656	$177
Initial hospital observation care per day, typically 70 minutes	11	$1,782	$162
Hospital observation care on day of discharge	19	$1,273	$67

2018: 4 services

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Original Medicare services billed in 2018

Subsequent hospital care with moderate levelof medical decision making at least 50 minutes	203	$63,964	$92
Hospital discharge day management, more than 30 minutes	130	$13,445	$97
Initial hospital care with moderate level of medical decision making at least 75 minutes	28	$5,266	$170
Hospital observation care on day of discharge	11	$727	$66

2017: 5 services

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Original Medicare services billed in 2017

Subsequent hospital care with moderate levelof medical decision making at least 50 minutes	163	$55,371	$93
Hospital discharge day management, more than 30 minutes	100	$10,307	$97
Initial hospital care with moderate level of medical decision making at least 75 minutes	47	$8,494	$177
Initial hospital observation care per day, typically 70 minutes	13	$2,017	$155
Hospital observation care on day of discharge	25	$1,590	$64

2016: 6 services

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Original Medicare services billed in 2016

Subsequent hospital care with moderate levelof medical decision making at least 50 minutes	204	$62,171	$93
Hospital discharge day management, more than 30 minutes	110	$11,178	$97
Initial hospital care with moderate level of medical decision making at least 75 minutes	55	$9,990	$175
Critical care, first 30-74 minutes	11	$2,082	$174
Initial hospital observation care per day, typically 70 minutes	12	$2,031	$156
Hospital observation care on day of discharge	16	$1,063	$66

2015: 5 services

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Original Medicare services billed in 2015

Subsequent hospital care with moderate levelof medical decision making at least 50 minutes	204	$64,702	$93
Hospital discharge day management, more than 30 minutes	103	$10,855	$98
Initial hospital care with moderate level of medical decision making at least 75 minutes	23	$4,073	$177
Critical care, first 30-74 minutes	15	$3,558	$198
Hospital observation care on day of discharge	25	$1,663	$67

2014: 5 services

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Original Medicare services billed in 2014

Subsequent hospital care with moderate levelof medical decision making at least 50 minutes	180	$59,086	$93
Hospital discharge day management, more than 30 minutes	90	$9,032	$96
Initial hospital care with moderate level of medical decision making at least 75 minutes	21	$3,794	$181
Critical care, first 30-74 minutes	11	$3,333	$196
Hospital observation care on day of discharge	19	$1,313	$66

2013: 3 services

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Original Medicare services billed in 2013

Subsequent hospital care with moderate levelof medical decision making at least 50 minutes	75	$23,001	$89
Initial hospital care with moderate level of medical decision making at least 75 minutes	58	$10,958	$177
Hospital discharge day management, more than 30 minutes	47	$4,544	$95

Medicaid work

$1,711 in 2024

Medicaid paid $1,711 for 90 billed services this clinician did in 2024, up to 16 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.

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Largest Medicaid services in 2024

SBSQ HOSPITAL IP/OBS CARE HIGH MDM 50 MINUTES	51	$1,711
SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES	27	$0
Hospital inpatient or observation discharge day management; more than 30 minutes on the date of the encounter	12	$0

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Medicaid work by year

2024	90	3	16	$1,711
2020	91	1	15	$4,742
2019	202	2	15	$10,327
2018	240	1	22	$10,288

See the largest Medicaid services in earlier years

2020

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Largest Medicaid services in 2020

SBSQ HOSPITAL IP/OBS CARE HIGH MDM 50 MINUTES	91	$4,742

2019

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Largest Medicaid services in 2019

SBSQ HOSPITAL IP/OBS CARE HIGH MDM 50 MINUTES	188	$9,791
Hospital inpatient or observation discharge day management; more than 30 minutes on the date of the encounter	14	$537

2018

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Largest Medicaid services in 2018

SBSQ HOSPITAL IP/OBS CARE HIGH MDM 50 MINUTES	240	$10,288

Drugs they prescribed that Part D paid

$7,639

Pharmacies billed $7,639 in 2024.

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

101 generic and fewer than 11 brand-name prescriptions · $7,639 in drug cost · 18 antibiotic prescriptions to 15 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.

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Largest Part D drug costs

Pantoprazole	11	$97	$9

Year by year

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Part D prescribing by year

2024	118	50	None	None	$7,639
2023	135	52	None	14%	$16,739
2022	118	39	0% (0)	15%	$11,124
2021	110	47	0% (0)	None	$9,730
2020	156	49	8% (12)	None	$27,731
2019	226	80	10% (22)	None	$22,135
2018	356	96	11% (39)	None	$44,642
2017	223	69	11% (24)	None	$28,049
2016	196	79	11% (22)	None	$17,348
2015	172	67	15% (25)	None	$21,676
2014	137	55	26% (36)	None	$17,139
2013	92	34	15% (14)	None	$7,559

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

See the drugs prescribed each year

2023: 2 drugs

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Part D drugs prescribed in 2023

Spironolactone	11	$99	$9
Furosemide	16	$93	$6

2021: 1 drug

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Part D drugs prescribed in 2021

Atorvastatin	13	$130	$10

2020: 1 drug

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Part D drugs prescribed in 2020

Pantoprazole	18	$630	$35

2019: 4 drugs

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Part D drugs prescribed in 2019

Ampicillin	11	$1,579	$144
Pantoprazole	14	$113	$8
Ciprofloxacin	13	$108	$8
Furosemide	17	$61	$4

2018: 8 drugs

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Part D drugs prescribed in 2018

Clinisol	17	$3,798	$223
Humulin R	14	$2,194	$157
Amiodarone	15	$499	$33
Pantoprazole	18	$171	$10
Tramadol	18	$62	$3
Furosemide	15	$48	$3
Sulfamethoxazole-Trimethoprim	12	$44	$4
Metoprolol	11	$42	$4

2017: 2 drugs

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Part D drugs prescribed in 2017

Clinisol	32	$7,303	$228
Furosemide	15	$34	$2

2016: 2 drugs

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Part D drugs prescribed in 2016

Ciprofloxacin	13	$73	$6
Furosemide	13	$38	$3

2015: 1 drug

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Part D drugs prescribed in 2015

Ciprofloxacin	11	$80	$7

2014: 1 drug

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Part D drugs prescribed in 2014

Hydrocodone-Acetaminophen	18	$148	$8

Money from drug and device companies

$104 in 2024

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Industry payments by year

2024	2	4	None	$104
2023	1	3	None	$86
2022	1	2	None	$40
2021	4	10	None	$264
2020	1	1	None	$34
2019	1	1	None	$178

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

A payment is not proof that care is biased.

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Payments by company

Kestra Medical Technology Services	Assure Wcd	$79	3 payments Meals for Assure Wcd · 2024-05-30 · $34 Meals for Assure Wcd · 2024-04-03 · $24 Meals for Assure Wcd · 2024-02-06 · $21
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)	Lifevest	$25	1 payment Meals for Lifevest · 2024-05-15 · $25

See all 4 published payments

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Every published payment

Kestra Medical Technology Services	Meals · 2024-05-30	Assure Wcd	$34
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)	Meals · 2024-05-15	Lifevest	$25
Kestra Medical Technology Services	Meals · 2024-04-03	Assure Wcd	$24
Kestra Medical Technology Services	Meals · 2024-02-06	Assure Wcd	$21

See earlier years (2023, 2022, 2021, 2020, 2019)

2023: $86

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Payments by company in 2023

Pfizer	Eliquis	$86	3 payments Meals for Eliquis · 2023-12-19 · $32 Meals for Eliquis · 2023-08-19 · $29 Meals for Eliquis · 2023-04-20 · $26

2022: $40

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Payments by company in 2022

Janssen Pharmaceuticals	Xarelto	$40	2 payments Meals for Xarelto · 2022-08-29 · $23 Meals for Xarelto · 2022-01-25 · $17

2021: $264

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Payments by company in 2021

Pfizer	Eliquis	$95	3 payments Meals for Eliquis · 2021-07-09 · $32 Meals for Eliquis · 2021-04-22 · $29 Meals for Eliquis · 2021-02-10 · $34
Janssen Pharmaceuticals	Xarelto	$81	4 payments Meals for Xarelto · 2021-12-14 · $21 Meals for Xarelto · 2021-05-24 · $16 Meals for Xarelto · 2021-04-23 · $19 Meals for Xarelto · 2021-02-05 · $24
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)	Lifevest	$65	2 payments Meals for Lifevest · 2021-06-24 · $26 Meals for Lifevest · 2021-01-13 · $39
E.R. Squibb & Sons L.L.C.	Eliquis	$23	1 payment Meals for Eliquis · 2021-04-21 · $23

2020: $34

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Payments by company in 2020

Janssen Pharmaceuticals	Xarelto	$34	1 payment Meals for Xarelto · 2020-12-17 · $34

2019: $178

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Payments by company in 2019

Abbott Laboratories	Proclaim Family of Scs Ipgs	$178	1 payment Meals for Proclaim Family of Scs Ipgs · 2019-10-26 · $178

Professional record

NPI: 1578580445
Licence: CA A78443California A78443: Current · expires 2027-10-31
Trained: New York College of Osteo Medicine of New York Institute of Technology, 2000
Group: County of Santa Clara
Gender: Female

More record details

Sole proprietor: No
Medicaid ID: CA 00A784430
Taxonomy: Hospitalist (208M00000X); Internal medicine (207R00000X)
Mailing address: 2350 W El Camino Real Fl 2, Mountain View, CA, 94040
NPI first listed: 2006-07-16
NPI last updated: 2019-05-07

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