Katherine Allen, NP
Nurse Practitioner · Sacramento
- 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 · Regents of the Univ of CA · 1,571 clinicians in this group
Looking this up.
Hospitals listed: University of California Davis 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 Katherine Allen’s office at (916) 734-2737 to ask if they take your plan before you enroll.
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.
- University of California Davis Medical CenterSacramento, CAAcute Care Hospital · Government - Hospital District or Authority · Has an emergency department · Birthing-friendlyPart of University of California Health, which runs 12 hospitalsHome of UC Davis Comprehensive Cancer Center, a National Cancer Institute designated comprehensive cancer centrePatients rate it 3 of 5 · 74% would definitely recommend itOverall rating: 4 of 5 starsWorse than the national rate — Abdominopelvic accidental puncture or laceration rate: 1.94 (1.18 to 2.71) · 3,010 cases, Jul 2022 – Jun 2024Worse than the national rate — MRSA Bacteremia: 1.564, Oct 2024 – Sep 2025Worse than the national rate — Rate of emergency department (ED) visits for patients receiving outpatient chemotherapy: 6.7 (5.6 to 8) · 1,134 cases, Jan 2024 – Dec 2024Worse than the national rate — Rate of inpatient admissions for patients receiving outpatient chemotherapy: 12.6 (10.9 to 14.5) · 1,134 cases, Jan 2024 – Dec 2024Better than the national rate — Death rate among surgical inpatients with serious treatable complications: 127.46 (95.81 to 159.1) · 281 cases, Jul 2022 – Jun 2024Better than the national rate — Pressure ulcer rate: 0.18 (0 to 0.57) · 12,625 cases, Jul 2022 – Jun 2024Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.677, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.713, Oct 2024 – Sep 2025Better than the national rate — Ratio of unplanned hospital visits after hospital outpatient surgery: 0.8 (0.7 to 1) · 2,436 cases, Jan 2024 – Dec 2024
See every measure and the patient survey for University of California Davis Medical Center
Behind the star rating — Deaths: 4 better, 4 the same, 0 worse of 8 measures. Safety: 0 better, 7 the same, 1 worse of 8 measures. Readmissions: 0 better, 9 the same, 2 worse of 11 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.
| Abdominopelvic accidental puncture or laceration rateComplications and deaths | 1.94 (1.18 to 2.71) · 3,010 cases | Worse | Jul 2022 – Jun 2024 |
| MRSA BacteremiaInfections | 1.564 | Worse | Oct 2024 – Sep 2025 |
| Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits | 6.7 (5.6 to 8) · 1,134 cases | Worse | Jan 2024 – Dec 2024 |
| Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits | 12.6 (10.9 to 14.5) · 1,134 cases | Worse | Jan 2024 – Dec 2024 |
| Death rate among surgical inpatients with serious treatable complicationsComplications and deaths | 127.46 (95.81 to 159.1) · 281 cases | Better | Jul 2022 – Jun 2024 |
| Pressure ulcer rateComplications and deaths | 0.18 (0 to 0.57) · 12,625 cases | Better | Jul 2022 – Jun 2024 |
| Central Line Associated Bloodstream Infection (ICU + select Wards)Infections | 0.677 | Better | Oct 2024 – Sep 2025 |
| Clostridium Difficile (C.Diff)Infections | 0.713 | Better | Oct 2024 – Sep 2025 |
| Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits | 0.8 (0.7 to 1) · 2,436 cases | Better | Jan 2024 – Dec 2024 |
| CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths | 0.98 (0.78 to 1.19) | No different | Jul 2022 – Jun 2024 |
| Death rate for CABG surgery patientsComplications and deaths | 2.2 · 82 cases | None | Jul 2022 – Jun 2025 |
| Death rate for COPD patientsComplications and deaths | 7.2 · 165 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart attack patientsComplications and deaths | 11.2 · 115 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart failure patientsComplications and deaths | 9.7 · 662 cases | None | Jul 2022 – Jun 2025 |
| Death rate for pneumonia patientsComplications and deaths | 10.1 · 463 cases | None | Jul 2022 – Jun 2025 |
| Death rate for stroke patientsComplications and deaths | 10.1 · 406 cases | None | Jul 2023 – Jun 2025 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths | 2.9 · 4,328 cases | None | Jul 2024 – Jun 2025 |
| Iatrogenic pneumothorax rateComplications and deaths | 0.22 (0.05 to 0.39) · 13,828 cases | No different | Jul 2022 – Jun 2024 |
| In-hospital fall-associated fracture rateComplications and deaths | 0.3 (0.13 to 0.46) · 14,152 cases | No different | Jul 2022 – Jun 2024 |
| Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths | 4.29 (2.92 to 5.66) · 4,920 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative acute kidney injury requiring dialysis rateComplications and deaths | 1.78 (0.46 to 3.09) · 2,250 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative hemorrhage or hematoma rateComplications and deaths | 2.07 (1.06 to 3.09) · 4,696 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative respiratory failure rateComplications and deaths | 9.46 (5.18 to 13.75) · 2,102 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative sepsis rateComplications and deaths | 6.35 (3.74 to 8.96) · 2,191 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative wound dehiscence rateComplications and deaths | 2.48 (1.19 to 3.77) · 1,169 cases | No different | Jul 2022 – Jun 2024 |
| Rate of complications for hip/knee replacement patientsComplications and deaths | 4.3 · 127 cases | None | Apr 2023 – Mar 2025 |
| Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections | 0.826 | No different | Oct 2024 – Sep 2025 |
| SSI - Abdominal HysterectomyInfections | 0.899 | No different | Oct 2024 – Sep 2025 |
| SSI - Colon SurgeryInfections | 0.669 | No different | Oct 2024 – Sep 2025 |
| Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits | 14.2 · 131 cases | None | Jul 2023 – Jun 2025 |
| Heart failure (HF) 30-Day Readmission RateUnplanned return visits | 21.2 · 751 cases | None | Jul 2023 – Jun 2025 |
| Hospital return days for heart attack patientsUnplanned return visits | -25.8 · 127 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for heart failure patientsUnplanned return visits | 24.1 · 758 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for pneumonia patientsUnplanned return visits | 23.6 · 477 cases | None | Jul 2022 – Jun 2025 |
| Pneumonia (PN) 30-Day Readmission RateUnplanned return visits | 17.6 · 469 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission after hip/knee replacementUnplanned return visits | 5.7 · 140 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for CABGUnplanned return visits | 10.9 · 65 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits | 18.3 · 203 cases | None | Jul 2023 – Jun 2025 |
| Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits | 11.8 (9.4 to 14.9) · 2,643 cases | No different | Jan 2022 – Dec 2024 |
What patients said (2,768 patients answered, 18% of those asked)
| Cleanliness | 2 |
| Nurse communication | 3 |
| Doctor communication | 3 |
| Communication about medicines | 3 |
| Discharge information | 4 |
| Overall hospital rating | 3 |
| Quietness | 1 |
| Recommend hospital | 4 |
| Room was "always" clean | 61% |
| Nurses "always" communicated well | 76% |
| Doctors "always" communicated well | 78% |
| Staff "always" explained | 60% |
| Yes, staff "did" give patients this information | 89% |
| Yes, staff "did" give patients information about help after discharge | 89% |
| Doctors "always" explained things so they could understand | 72% |
| Doctors "always" listened carefully | 76% |
| Doctors "always" treated them with courtesy and respect | 85% |
| Patients who gave a rating of "9" or "10" (high) | 68% |
| Staff "always" explained new medications | 73% |
| Nurses "always" explained things so they could understand | 71% |
| Nurses "always" listened carefully | 74% |
| Nurses "always" treated them with courtesy and respect | 84% |
| "Always" quiet at night | 37% |
| "YES", patients would definitely recommend the hospital | 74% |
| Staff "always" explained possible side effects | 47% |
| Yes, staff "did" give patients information about possible symptoms | 89% |
Original Medicare doctor bills
$9,022
Medicare paid this office $9,022 for 56 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 44 | $5,803 | $54 |
| Subsequent hospital care with moderate levelof medical decision making at least 50 minutes | 18 | $2,272 | $81 |
Who their Medicare patients are
56 Original Medicare patients in 2024. Average age 73 · Women 32% · Also on Medicaid 54% · Health risk score 3.58. Sicker patients than 9 in 10 peers; the typical nurse practitioner clinician is at 1.42.
Conditions among them: High blood pressure 75% · Coronary heart disease 75% · Heart failure 75% · Chronic kidney disease 75% · Diabetes 71% · Atrial fibrillation 70% · COPD 45% · Depression 36% · Dementia 20% · Stroke 20%.
The office billed $49,484, Medicare allowed $11,321 and paid $9,022; for 146 services of 4 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
| 2024 | 56 | 146 | 73 | 3.58 | $49,484 | $9,022 |
| 2023 | 86 | 240 | 73 | 1.60 | $99,730 | $15,703 |
| 2022 | 72 | 165 | 73 | 1.28 | $53,794 | $9,579 |
| 2021 | 61 | 140 | 74 | 1.46 | $43,770 | $9,153 |
| 2020 | 55 | 98 | 73 | 1.40 | $52,545 | $6,926 |
| 2019 | 55 | 62 | 69 | 1.63 | $23,639 | $4,484 |
| 2018 | 46 | 65 | 67 | 1.61 | $7,500 | $4,254 |
| 2017 | 35 | 63 | 68 | 1.58 | $8,408 | $3,082 |
| 2016 | 20 | 26 | 66 | 1.38 | $5,124 | $1,647 |
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: 5 services
| Long return visit (40+ min) | 35 | $5,111 | $109 |
| Return visit (30+ min) | 29 | $3,493 | $70 |
| Telephone medical discussion with physician, 21-30 minutes | 42 | $3,423 | $66 |
| Short return visit (20+ min) | 12 | $1,058 | $50 |
| Online digital evaluation and management service for an established patient for up to 7 days, total time 5-10 minutes | 15 | $177 | $8 |
2022: 5 services
| Telephone medical discussion with physician, 21-30 minutes | 29 | $2,606 | $69 |
| Long return visit (40+ min) | 15 | $1,871 | $104 |
| Telephone medical discussion with physician, 11-20 minutes | 21 | $1,678 | $47 |
| Return visit (30+ min) | 16 | $1,488 | $71 |
| Short return visit (20+ min) | 17 | $1,252 | $45 |
2021: 3 services
| Telephone medical discussion with physician, 21-30 minutes | 30 | $2,912 | $75 |
| Telephone medical discussion with physician, 11-20 minutes | 23 | $2,197 | $49 |
| Long return visit (40+ min) | 13 | $1,626 | $108 |
2020: 5 services
| Long return visit (40+ min) | 21 | $2,112 | $81 |
| Extended patient service without direct patient contact, first hour | 13 | $1,143 | $88 |
| Return visit (30+ min) | 15 | $1,113 | $62 |
| Telephone medical discussion with physician, 21-30 minutes | 11 | $866 | $62 |
| Telephone medical discussion with physician, 11-20 minutes | 11 | $472 | $39 |
2019: 2 services
| Long return visit (40+ min) | 29 | $2,428 | $78 |
| Return visit (30+ min) | 20 | $1,052 | $50 |
2018: 2 services
| Return visit (30+ min) | 30 | $2,427 | $58 |
| Long return visit (40+ min) | 11 | $958 | $80 |
2017: 2 services
| Return visit (30+ min) | 20 | $1,319 | $57 |
| Short return visit (20+ min) | 23 | $1,241 | $38 |
2016: 1 service
| Return visit (30+ min) | 13 | $1,012 | $60 |
Drugs they prescribed that Part D paid
$37,510
Pharmacies billed $37,510 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 117) in 2024. At or below the middle of the specialty; the typical nurse practitioner clinician is at 0%.
86 generic and 31 brand-name prescriptions · $37,510 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.
| Jardiance | 14 | $14,212 | $1,015 |
| Eliquis | 11 | $12,270 | $1,115 |
| Metoprolol | 23 | $413 | $18 |
| Spironolactone | 13 | $181 | $14 |
Year by year
| 2024 | 117 | 47 | 0% (0) | 26% | $37,510 |
| 2023 | 762 | 93 | 0% (0) | 30% | $861,211 |
| 2022 | 546 | 80 | 0% (0) | 22% | $226,443 |
| 2021 | 384 | 57 | 0% (0) | 12% | $35,961 |
| 2020 | 151 | 29 | 0% (0) | 11% | $15,325 |
| 2019 | 11 | None | 0% (0) | 0% | $319 |
Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.
See the drugs prescribed each year
2023: 17 drugs
| Camzyos | 80 | $657,169 | $8,215 |
| Jardiance | 47 | $64,124 | $1,364 |
| Eliquis | 51 | $64,038 | $1,256 |
| Entresto | 37 | $51,958 | $1,404 |
| Metoprolol | 116 | $3,306 | $29 |
| Clonidine | 14 | $2,756 | $197 |
| Carvedilol | 65 | $1,437 | $22 |
| Candesartan Cilexetil | 22 | $1,010 | $46 |
| Spironolactone | 68 | $1,010 | $15 |
| Diltiazem 24hr Er (Cd) | 17 | $988 | $58 |
| Nifedipine Er | 13 | $417 | $32 |
| Atenolol | 22 | $405 | $18 |
| Atorvastatin | 33 | $351 | $11 |
| Rosuvastatin | 17 | $273 | $16 |
| Losartan | 24 | $211 | $9 |
| Furosemide | 18 | $201 | $11 |
| Amlodipine Besylate | 14 | $133 | $10 |
2022: 13 drugs
| Camzyos | 14 | $109,975 | $7,855 |
| Entresto | 45 | $38,943 | $865 |
| Eliquis | 30 | $34,898 | $1,163 |
| Candesartan Cilexetil | 27 | $4,399 | $163 |
| Metoprolol | 106 | $3,025 | $29 |
| Diltiazem 24hr Er (Cd) | 11 | $2,031 | $185 |
| Clonidine | 18 | $1,472 | $82 |
| Carvedilol | 58 | $988 | $17 |
| Losartan | 47 | $525 | $11 |
| Spironolactone | 37 | $425 | $11 |
| Amlodipine Besylate | 17 | $168 | $10 |
| Atenolol | 18 | $164 | $9 |
| Atorvastatin | 16 | $49 | $3 |
2021: 9 drugs
| Eliquis | 12 | $14,562 | $1,213 |
| Candesartan Cilexetil | 36 | $3,126 | $87 |
| Diltiazem 24hr Er (Cd) | 23 | $2,760 | $120 |
| Metoprolol | 60 | $1,330 | $22 |
| Carvedilol | 64 | $780 | $12 |
| Losartan | 30 | $351 | $12 |
| Spironolactone | 23 | $255 | $11 |
| Atenolol | 15 | $255 | $17 |
| Clopidogrel | 13 | $51 | $4 |
2020: 4 drugs
| Eliquis | 15 | $9,944 | $663 |
| Metoprolol | 38 | $1,622 | $43 |
| Carvedilol | 34 | $350 | $10 |
| Losartan | 13 | $121 | $9 |
Money from drug and device companies
$94 in 2025
| 2025 | 1 | 1 | None | $94 |
| 2024 | 1 | 1 | None | $22 |
Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.
A payment is not proof that care is biased.
| Boehringer Ingelheim Pharmaceuticals | None | $94 | 1 payment
|
See the published payment
| Boehringer Ingelheim Pharmaceuticals | Meals · 2025-02-10 | None | $94 |
See earlier years (2024)
2024: $22
| Alnylam Pharmaceuticals | Onpattro | $22 | 1 payment
|
Checkups this office reported
Medicare did not publish checkup rates for this clinician.
- Medicare’s overall office score
- 74.5 / 100
- Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.
Professional record
- NPI
- 1831568013
- Licence
- CA 95003135
- Gender
- Female
More record details
- Sole proprietor
- No
- Taxonomy
- Nurse practitioner (363L00000X); Federal specialty code 364S00000X (364S00000X)
- Mailing address
- 7500 Barton Rd, Granite Bay, CA, 95746
- NPI first listed
- 2015-09-17
- NPI last updated
- 2025-06-17
- NPI record certified
- 2025-06-04
This is when the NPI record was last certified, not a medical board exam.