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Gregory Maness Allen

Hematology/Oncology · Berkeley

NPI 1376986331

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
9
1 carrier
Offices
3
Since medical school
13 years
Graduated 2013

Offices

3 locations · UCSF Medical Group Business Services · University of California San Francisco

Looking this up.

Hospitals listed: UCSF Medical Center. That is not proof they admit you there this week.

Plans that list them

9 plans · 1 carrier

A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Gregory Maness Allen’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
Alignment Health BreathEasy (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Clarity (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Harmony (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes CalPlus (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes Care (HMO C-SNP)Alignment Health PlanListedSep 28, 2026
Alignment Health Heart & Diabetes Choice (HMO C-SNP)Alignment Health PlanListedSep 28, 2026
Alignment Health Honor+ Plan (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health My Choice CalCare (HMO)Alignment Health PlanListedOct 3, 2026

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.

  • UCSF Medical CenterSan Francisco, CAAcute Care Hospital · Voluntary non-profit - Other · Has an emergency department · Birthing-friendlyPart of University of California Health, which runs 12 hospitalsHome of UCSF Helen Diller Family Comprehensive Cancer Center, a National Cancer Institute designated comprehensive cancer centrePatients rate it 4 of 5 · 81% would definitely recommend it
    Overall rating: 4 of 5 starsWorse than the national rate — Perioperative pulmonary embolism or deep vein thrombosis rate: 4.9 (3.79 to 6.02) · 7,590 cases, Jul 2022 – Jun 2024Worse than the national rate — Rate of inpatient admissions for patients receiving outpatient chemotherapy: 12.8 (11.3 to 14.4) · 2,019 cases, Jan 2024 – Dec 2024Better than the national rate — Death rate among surgical inpatients with serious treatable complications: 139.4 (110.22 to 168.58) · 452 cases, Jul 2022 – Jun 2024Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.622, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.626, Oct 2024 – Sep 2025Better than the national rate — MRSA Bacteremia: 0.491, Oct 2024 – Sep 2025Better than the national rate — Ratio of unplanned hospital visits after hospital outpatient surgery: 0.8 (0.7 to 1) · 2,336 cases, Jan 2024 – Dec 2024
See every measure and the patient survey for UCSF Medical Center

Behind the star rating — Deaths: 5 better, 3 the same, 0 worse of 8 measures. Safety: 3 better, 5 the same, 0 worse of 8 measures. Readmissions: 3 better, 5 the same, 3 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 UCSF Medical Center
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths4.9 (3.79 to 6.02) · 7,590 casesWorseJul 2022 – Jun 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits12.8 (11.3 to 14.4) · 2,019 casesWorseJan 2024 – Dec 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths139.4 (110.22 to 168.58) · 452 casesBetterJul 2022 – Jun 2024
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.622BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.626BetterOct 2024 – Sep 2025
MRSA BacteremiaInfections0.491BetterOct 2024 – Sep 2025
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits0.8 (0.7 to 1) · 2,336 casesBetterJan 2024 – Dec 2024
Abdominopelvic accidental puncture or laceration rateComplications and deaths1.24 (0.58 to 1.9) · 4,689 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths1.05 (0.89 to 1.2)No differentJul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths1.9 · 89 casesNoneJul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths7.5 · 85 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths10.1 · 132 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths6.6 · 454 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths10.3 · 618 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths9.6 · 380 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths2.7 · 5,000 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.22 (0.06 to 0.38) · 15,965 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.2 (0.05 to 0.35) · 17,859 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths0.85 (0 to 1.83) · 4,184 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2 (1.1 to 2.9) · 6,516 casesNo differentJul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths7.35 (4.49 to 10.21) · 3,989 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths5 (3.22 to 6.77) · 4,087 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.95 (0.74 to 3.15) · 2,034 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.95 (0.63 to 1.28) · 15,431 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths4 · 399 casesNoneApr 2023 – Mar 2025
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.899No differentOct 2024 – Sep 2025
SSI - Abdominal HysterectomyInfections0.689No differentOct 2024 – Sep 2025
SSI - Colon SurgeryInfections1.224No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits16 · 156 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits20 · 564 casesNoneJul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits60.3 · 160 casesNoneJul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits-9.7 · 550 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits44.1 · 660 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits16.8 · 667 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits5.7 (4.8 to 6.7) · 2,019 casesNo differentJan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits6 · 421 casesNoneJul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits10.5 · 53 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits20 · 107 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits13.9 (11.3 to 17.1) · 3,247 casesNo differentJan 2022 – Dec 2024

What patients said (3,181 patients answered, 25% of those asked)

Patient survey stars by topic at UCSF Medical Center
Cleanliness4
Nurse communication4
Doctor communication4
Communication about medicines3
Discharge information4
Overall hospital rating4
Quietness2
Recommend hospital5
Share of patients giving the best answer at UCSF Medical Center
Room was "always" clean71%
Nurses "always" communicated well80%
Doctors "always" communicated well80%
Staff "always" explained61%
Yes, staff "did" give patients this information88%
Yes, staff "did" give patients information about help after discharge87%
Doctors "always" explained things so they could understand74%
Doctors "always" listened carefully78%
Doctors "always" treated them with courtesy and respect86%
Patients who gave a rating of "9" or "10" (high)76%
Staff "always" explained new medications75%
Nurses "always" explained things so they could understand77%
Nurses "always" listened carefully78%
Nurses "always" treated them with courtesy and respect86%
"Always" quiet at night50%
"YES", patients would definitely recommend the hospital81%
Staff "always" explained possible side effects46%
Yes, staff "did" give patients information about possible symptoms90%

Original Medicare doctor bills

$16,169

Medicare paid this office $16,169 for 41 people. Most of that is long return visits and Botox.

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

Largest Original Medicare bills
Long return visit (40+ min)39$13,902$117
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's29$1,374$15

Who their Medicare patients are

41 Original Medicare patients in 2024. Average age 73 · Women 37% · Also on Medicaid 37% · Health risk score 2.52. Above the middle of the specialty; the typical hematology-oncology clinician is at 2.04.

Conditions among them: High blood pressure 75% · Cancer 75% · Coronary heart disease 32% · COPD 29%.

The office billed $105,776, Medicare allowed $22,111 and paid $16,169; for 222 services of 5 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
202441222732.52$105,776$16,169
202339413722.47$91,831$14,226
202240309722.10$115,952$17,476
202145127722.91$78,558$11,751
202038146732.94$100,750$12,663
201942117722.50$96,705$11,920
20184164712.38$53,287$6,966

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: 2 services

Original Medicare services billed in 2023
Long return visit (40+ min)23$5,859$127
Return visit (30+ min)31$4,796$81

2022: 1 service

Original Medicare services billed in 2022
Return visit (30+ min)37$8,066$86

2021: 4 services

Original Medicare services billed in 2021
Return visit (30+ min)33$7,015$86
New patient visit (60+ min)12$1,996$166
Long return visit (40+ min)11$1,802$120
Short return visit (20+ min)11$668$51

2020: 3 services

Original Medicare services billed in 2020
Long return visit (40+ min)22$8,227$97
Return visit (30+ min)15$1,997$71
New patient visit (60+ min)11$1,436$131

2019: 2 services

Original Medicare services billed in 2019
Long return visit (40+ min)30$8,793$96
New patient visit (60+ min)22$2,858$130

2018: 2 services

Original Medicare services billed in 2018
Long return visit (40+ min)30$4,936$99
New patient visit (60+ min)13$1,937$149

Drugs they prescribed that Part D paid

$847,238

Pharmacies billed $847,238 in 2024.

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

47 generic and 56 brand-name prescriptions · $847,238 in drug cost.

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
Tagrisso36$716,117$19,892
Ondansetron13$137$11

Year by year

Part D prescribing by year
202410318None54%$847,238
20238812None48%$444,154
20226814None51%$283,765
202111620None48%$583,407
202010819None47%$586,160
201911922None26%$454,315
20183914NoneNone$80,699
20162913NoneNone$2,284
2015238267% (17)None$10,206
20143096716% (48)None$13,690
20136317NoneNone$3,758

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

See the drugs prescribed each year

2023: 3 drugs

Part D drugs prescribed in 2023
Tagrisso24$430,235$17,926
Prochlorperazine Maleate14$204$15
Ondansetron18$194$11

2022: 2 drugs

Part D drugs prescribed in 2022
Tagrisso17$275,635$16,214
Eliquis12$6,770$564

2021: 2 drugs

Part D drugs prescribed in 2021
Tagrisso36$544,895$15,136
Ondansetron14$148$11

2020: 1 drug

Part D drugs prescribed in 2020
Tagrisso36$535,796$14,883

2019: 5 drugs

Part D drugs prescribed in 2019
Tagrisso27$443,002$16,407
Dexamethasone11$408$37
Ondansetron20$247$12
Prochlorperazine Maleate16$167$10
Lorazepam17$91$5

2015: 6 drugs

Part D drugs prescribed in 2015
Amlodipine Besylate29$164$6
Atorvastatin15$135$9
Pantoprazole13$120$9
Lisinopril26$114$4
Hydrochlorothiazide24$50$2
Carvedilol12$43$4

2014: 6 drugs

Part D drugs prescribed in 2014
Metoprolol22$418$19
Oxycodone14$190$14
Lisinopril37$173$5
Tramadol20$172$9
Hydrochlorothiazide29$79$3
Metformin12$71$6

Money from drug and device companies

$30 in 2021

A payment is not proof that care is biased.

Payments by company
Pharmacyclics LLC An AbbVieImbruvica$30
1 payment
  • Meals for Imbruvica · 2021-04-05 · $30
See the published payment
Every published payment
Pharmacyclics LLC An AbbVieMeals · 2021-04-05Imbruvica$30

Research money

Money a company paid to run a study. Where it went to their institution, the clinician is named as an investigator and did not receive it; the amount covers the whole study, often across many sites.

Research payments by company and study
Bayer HealthCare Pharmaceuticals Inc. · Bay94-8862, Finerenone Phase 3 in Non-Diabetic Ckd · 2022Their institution$5,300

Checkups this office reported

Medicare did not publish checkup rates for this clinician.

Medicare’s overall office score
75.0 / 100
Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.

Professional record

NPI
1376986331
Licence
MD 0276
Group
UCSF Medical Group Business Services · University of California San Francisco
Video visits
Lists video visits
Gender
Male
More record details
Sole proprietor
Yes
Taxonomy
Internal medicine (207R00000X)
Mailing address
600 N Wolfe St, Baltimore, MD, 21287
NPI first listed
2013-04-09
NPI last updated
2013-04-24

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