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Julianna George Marwell, MD

Geriatric Medicine · Durham

NPI 1508128075

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
1
1 carrier
Offices
7

Offices

7 locations · Duke Health Integrated Practice Inc · Legacy Healthcare Services Inc

Looking this up.

Hospitals listed: Duke Regional Hospital · Duke University Hospital. That is not proof they admit you there this week.

Plans that list them

1 plan · 1 carrier

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

Plans whose provider directory lists this clinician
DualConnect (HMO D-SNP)Santa Clara Family Health PlanListedSep 1, 2026

California Medical Board record

Licence A167592 · Current

Licensed to practise in California · since 2020 · expires 2028-01-31 · 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.

  • Duke Regional HospitalDurham, NCAcute Care Hospital · Government - Local · Has an emergency department · Birthing-friendlyPart of Duke University Health System, which runs 3 hospitalsPatients rate it 4 of 5 · 76% would definitely recommend it
    Overall rating: 5 of 5 starsBetter than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.245, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.204, Oct 2024 – Sep 2025Better than the national rate — SSI - Colon Surgery: 0, Oct 2024 – Sep 2025
  • Duke University HospitalDurham, NCAcute Care Hospital · Proprietary · Has an emergency department · Birthing-friendlyPart of Duke University Health System, which runs 3 hospitalsHome of Duke Cancer Institute, a National Cancer Institute designated comprehensive cancer centrePatients rate it 4 of 5 · 80% would definitely recommend it
    Overall rating: 5 of 5 starsWorse than the national rate — Death rate among surgical inpatients with serious treatable complications: 216.01 (186.77 to 245.25) · 366 cases, Jul 2022 – Jun 2024Worse than the national rate — Perioperative pulmonary embolism or deep vein thrombosis rate: 5.5 (4.26 to 6.75) · 6,581 cases, Jul 2022 – Jun 2024Worse than the national rate — Postoperative acute kidney injury requiring dialysis rate: 2.95 (2.11 to 3.79) · 3,680 cases, Jul 2022 – Jun 2024Better than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.374, Oct 2024 – Sep 2025Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.727, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.398, Oct 2024 – Sep 2025Better than the national rate — MRSA Bacteremia: 0.592, Oct 2024 – Sep 2025Better than the national rate — Rate of inpatient admissions for patients receiving outpatient chemotherapy: 8.6 (7.5 to 9.8) · 2,101 cases, Jan 2024 – Dec 2024
See every measure and the patient survey for Duke Regional Hospital

Behind the star rating — Deaths: 1 better, 7 the same, 0 worse of 8 measures. Safety: 3 better, 4 the same, 0 worse of 7 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.

Every scored measure at Duke Regional Hospital
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.245BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.204BetterOct 2024 – Sep 2025
SSI - Colon SurgeryInfections0BetterOct 2024 – Sep 2025
Abdominopelvic accidental puncture or laceration rateComplications and deaths1.12 (0.12 to 2.12) · 931 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths0.98 (0.65 to 1.31)No differentJul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths134.57 (80.4 to 188.74) · 57 casesNo differentJul 2022 – Jun 2024
Death rate for COPD patientsComplications and deaths7.3 · 138 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths11.5 · 109 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths11.7 · 363 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths13.4 · 327 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths9.5 · 239 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths2.5 · 3,382 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.22 (0.01 to 0.44) · 5,561 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.25 (0.06 to 0.45) · 5,533 casesNo differentJul 2022 – Jun 2024
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths4.2 (2.09 to 6.31) · 1,215 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths1.91 (0.28 to 3.55) · 472 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2.62 (1.09 to 4.16) · 1,088 casesNo differentJul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths9.07 (1.89 to 16.25) · 503 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths4.64 (0.88 to 8.4) · 468 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.67 (0.18 to 3.16) · 234 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.52 (0 to 1.18) · 4,538 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths3.5 · 96 casesNoneApr 2023 – Mar 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.566No differentOct 2024 – Sep 2025
MRSA BacteremiaInfections0.305No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits14.4 · 165 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits20.3 · 792 casesNoneJul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits7.2 · 94 casesNoneJul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits-14.5 · 400 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits-15.4 · 348 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits17.4 · 578 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits5 (3.3 to 7.5) · 80 casesNo differentJan 2024 – Dec 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits12.3 (8.8 to 16.6) · 80 casesNo differentJan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits6.5 · 98 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits18.6 · 283 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits11.2 (8.7 to 14.8) · 1,346 casesNo differentJan 2022 – Dec 2024
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits0.9 (0.7 to 1.2) · 504 casesNo differentJan 2024 – Dec 2024

What patients said (604 patients answered, 19% of those asked)

Patient survey stars by topic at Duke Regional Hospital
Cleanliness2
Nurse communication4
Doctor communication4
Communication about medicines3
Discharge information4
Overall hospital rating4
Quietness3
Recommend hospital4
Share of patients giving the best answer at Duke Regional Hospital
Room was "always" clean59%
Nurses "always" communicated well80%
Doctors "always" communicated well84%
Staff "always" explained60%
Yes, staff "did" give patients this information88%
Yes, staff "did" give patients information about help after discharge89%
Doctors "always" explained things so they could understand79%
Doctors "always" listened carefully84%
Doctors "always" treated them with courtesy and respect89%
Patients who gave a rating of "9" or "10" (high)72%
Staff "always" explained new medications75%
Nurses "always" explained things so they could understand76%
Nurses "always" listened carefully77%
Nurses "always" treated them with courtesy and respect86%
"Always" quiet at night53%
"YES", patients would definitely recommend the hospital76%
Staff "always" explained possible side effects45%
Yes, staff "did" give patients information about possible symptoms87%
See every measure and the patient survey for Duke University Hospital

Behind the star rating — Deaths: 4 better, 3 the same, 1 worse of 8 measures. Safety: 3 better, 5 the same, 0 worse of 8 measures. Readmissions: 3 better, 8 the same, 0 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 Duke University Hospital
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths216.01 (186.77 to 245.25) · 366 casesWorseJul 2022 – Jun 2024
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths5.5 (4.26 to 6.75) · 6,581 casesWorseJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths2.95 (2.11 to 3.79) · 3,680 casesWorseJul 2022 – Jun 2024
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.374BetterOct 2024 – Sep 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.727BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.398BetterOct 2024 – Sep 2025
MRSA BacteremiaInfections0.592BetterOct 2024 – Sep 2025
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits8.6 (7.5 to 9.8) · 2,101 casesBetterJan 2024 – Dec 2024
Abdominopelvic accidental puncture or laceration rateComplications and deaths0.91 (0.21 to 1.61) · 4,083 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths1.1 (0.94 to 1.26)No differentJul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths1.6 · 277 casesNoneJul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths6.4 · 175 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths10.4 · 351 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths9.1 · 814 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths9.6 · 530 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths11.4 · 684 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths2.3 · 10,510 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.16 (0 to 0.32) · 15,279 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.2 (0.04 to 0.36) · 16,992 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2.62 (1.69 to 3.56) · 5,880 casesNo differentJul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths8.88 (6.29 to 11.47) · 3,482 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths5.96 (4.07 to 7.84) · 3,644 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths2.49 (1.26 to 3.72) · 1,495 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.5 (0.15 to 0.85) · 14,819 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths4.9 · 293 casesNoneApr 2023 – Mar 2025
SSI - Abdominal HysterectomyInfections1.373No differentOct 2024 – Sep 2025
SSI - Colon SurgeryInfections1.048No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits12.7 · 688 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits20.6 · 1,551 casesNoneJul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits7.3 · 428 casesNoneJul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits-20.2 · 963 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits-14.2 · 554 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits15.9 · 861 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits4.9 (4.1 to 5.8) · 2,101 casesNo differentJan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits5.9 · 320 casesNoneJul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits9.7 · 312 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits20.1 · 367 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits12.7 (10.2 to 16) · 2,489 casesNo differentJan 2022 – Dec 2024
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits0.9 (0.8 to 1) · 2,623 casesNo differentJan 2024 – Dec 2024

What patients said (1,341 patients answered, 22% of those asked)

Patient survey stars by topic at Duke University Hospital
Cleanliness3
Nurse communication4
Doctor communication4
Communication about medicines3
Discharge information4
Overall hospital rating4
Quietness3
Recommend hospital5
Share of patients giving the best answer at Duke University Hospital
Room was "always" clean65%
Nurses "always" communicated well81%
Doctors "always" communicated well82%
Staff "always" explained63%
Yes, staff "did" give patients this information90%
Yes, staff "did" give patients information about help after discharge90%
Doctors "always" explained things so they could understand76%
Doctors "always" listened carefully82%
Doctors "always" treated them with courtesy and respect89%
Patients who gave a rating of "9" or "10" (high)78%
Staff "always" explained new medications77%
Nurses "always" explained things so they could understand77%
Nurses "always" listened carefully79%
Nurses "always" treated them with courtesy and respect87%
"Always" quiet at night58%
"YES", patients would definitely recommend the hospital80%
Staff "always" explained possible side effects49%
Yes, staff "did" give patients information about possible symptoms91%

Original Medicare doctor bills

$29,537

Medicare paid this office $29,537 for 211 people.

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

Largest Original Medicare bills
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes85$9,984$115
New patient visit (60+ min)41$5,594$136
Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes59$3,542$43
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes42$3,535$65
Long return visit (40+ min)24$2,664$107
See all 6 services
Every Original Medicare service billed
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes85$9,984$115
New patient visit (60+ min)41$5,594$136
Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes59$3,542$43
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes42$3,535$65
Long return visit (40+ min)24$2,664$107
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or13$328$23

Who their Medicare patients are

211 Original Medicare patients in 2024. Average age 82 · 85 and older 38% · Women 52% · Also on Medicaid 11% · Health risk score 1.92. Above the middle of the specialty; the typical internal medicine clinician is at 1.76.

Conditions among them: High blood pressure 75% · Dementia 56% · Depression 42% · Coronary heart disease 41% · Chronic kidney disease 40% · Atrial fibrillation 35% · Diabetes 30% · Heart failure 29% · Cancer 28% · Stroke 28% · COPD 18%.

The office billed $117,956, Medicare allowed $37,304 and paid $29,537; for 343 services of 12 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
2024211343821.92$117,956$29,537
2023134263841.97$84,767$20,048
2022245574841.74$194,088$42,304
2021183351841.78$148,820$29,308
2020145239831.83$90,420$18,155
20195821,047691.83$201,148$53,399
2018590987671.86$192,765$51,579
2017228280671.74$51,650$15,222

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
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes69$8,179$117
Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes84$5,721$44
Initial hospital care with moderate level of medical decision making at least 75 minutes16$2,500$156
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes26$2,495$71

2022: 9 services

Original Medicare services billed in 2022
Long return visit (40+ min)65$11,113$94
Initial hospital care with straightforward or low level of medical decision making, per day at least 40 minutes60$5,412$89
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes47$4,853$64
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes40$4,845$121
Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes84$4,592$35
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit32$3,289$103
Return visit (30+ min)29$2,346$60
New patient visit (60+ min)16$2,039$127
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or11$370$28

2021: 7 services

Original Medicare services billed in 2021
Long return visit (40+ min)53$8,128$110
Initial hospital care with straightforward or low level of medical decision making, per day at least 40 minutes42$3,850$92
Return visit (30+ min)33$3,663$81
New patient visit (60+ min)20$3,370$169
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes30$2,598$67
Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes41$2,379$36
New patient visit (45+ min)12$1,264$105

2020: 7 services

Original Medicare services billed in 2020
Return visit (30+ min)44$4,203$74
Initial hospital care with straightforward or low level of medical decision making, per day at least 40 minutes23$2,302$100
Long return visit (40+ min)17$1,781$105
Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes26$1,560$36
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes12$1,518$127
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes15$1,471$67
New patient visit (45+ min)14$1,456$104

2019: 6 services

Original Medicare services billed in 2019
Return visit (30+ min)417$31,918$50
Short return visit (20+ min)153$5,727$34
Long return visit (40+ min)21$4,978$80
New patient visit (45+ min)61$4,581$75
Transitional care management services for problem of at least moderate complexity11$925$84
New patient visit (30+ min)13$575$44

2018: 5 services

Original Medicare services billed in 2018
Return visit (30+ min)417$30,849$50
Long return visit (40+ min)26$6,230$82
Short return visit (20+ min)138$5,065$34
New patient visit (45+ min)50$4,153$83
Transitional care management services for problem of at least moderate complexity20$1,633$82

2017: 3 services

Original Medicare services billed in 2017
Return visit (30+ min)142$8,725$59
Short return visit (20+ min)71$2,950$38
Long return visit (40+ min)11$1,439$85

Medicaid work

$17,792 in 2019

Medicaid paid $17,792 for 428 billed services this clinician did in 2019, up to 47 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 2019
Return visit (30+ min)308$13,561
Short return visit (20+ min)105$3,369
Long return visit (40+ min)15$862
Medicaid work by year
2019428347$17,792
2018523350$22,063
See the largest Medicaid services in earlier years

2018

Largest Medicaid services in 2018
Return visit (30+ min)425$18,799
Short return visit (20+ min)79$2,387
Long return visit (40+ min)19$877

Professional record

NPI
1508128075
Licence
CA A167592, SC 51454California A167592: Current · expires 2028-01-31
Group
Duke Health Integrated Practice Inc · Legacy Healthcare Services Inc
Video visits
Lists video visits
Gender
Female
More record details
Sole proprietor
No
Taxonomy
Federal specialty code 207RG0300X (207RG0300X)
Mailing address
300 Pasteur Dr, Stanford, CA, 94305
NPI first listed
2012-06-11
NPI last updated
2020-06-24
NPI record certified
2020-06-24

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