Geordie Claire Lonza, MD
Orthopedic Surgery · Santa Clara
- Medicare standing
- Clear
- Enrolled, allowed to bill and order, not excluded
- Plans that list them
- 4
- 1 carrier
- Office
- 1
Offices
1 location · Permanente Medical Group Inc · 10,928 clinicians in this group
Hospitals listed: New York-Presbyterian Hospital. That is not proof they admit you there this week.
Plans that list them
4 plans · 1 carrier
A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Lonza’s office at (408) 851-1000 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.
| Kaiser Permanente Dual Complete North P2 (HMO D-SNP) | Kaiser Permanente | Listed | Sep 1, 2026 |
| Kaiser Permanente Dual Complete North P23 (HMO D-SNP) | Kaiser Permanente | Listed | Sep 1, 2026 |
| Kaiser Permanente Sr Adv Basic Santa Clara (HMO) | Kaiser Permanente | Listed | Sep 1, 2026 |
| Kaiser Permanente Sr Adv Enhanced Santa Clara (HMO) | Kaiser Permanente | Listed | Sep 1, 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.
- New York-Presbyterian HospitalNew York, NYAcute Care Hospital · Voluntary non-profit - Private · Has an emergency department · Birthing-friendlyPart of New York Presbyterian Healthcare System, which runs 8 hospitalsHome of Herbert Irving Comprehensive Cancer Center, a National Cancer Institute designated comprehensive cancer centrePatients rate it 3 of 5 · 72% would definitely recommend itOverall rating: 5 of 5 starsWorse than the national rate — Rate of inpatient admissions for patients receiving outpatient chemotherapy: 15.2 (13.8 to 16.7) · 1,897 cases, Jan 2024 – Dec 2024Better than the national rate — Abdominopelvic accidental puncture or laceration rate: 0.35 (0 to 0.86) · 10,364 cases, Jul 2022 – Jun 2024Better than the national rate — CMS Medicare PSI 90: Patient safety and adverse events composite: 0.4 (0.3 to 0.51), Jul 2022 – Jun 2024Better than the national rate — In-hospital fall-associated fracture rate: 0.14 (0.03 to 0.25) · 52,654 cases, Jul 2022 – Jun 2024Better than the national rate — Perioperative pulmonary embolism or deep vein thrombosis rate: 1.48 (0.6 to 2.36) · 14,926 cases, Jul 2022 – Jun 2024Better than the national rate — Postoperative acute kidney injury requiring dialysis rate: 0.48 (0 to 1.06) · 8,078 cases, Jul 2022 – Jun 2024Better than the national rate — Postoperative hemorrhage or hematoma rate: 0.94 (0.21 to 1.66) · 12,529 cases, Jul 2022 – Jun 2024Better than the national rate — Postoperative respiratory failure rate: 6.15 (4.51 to 7.79) · 8,277 cases, Jul 2022 – Jun 2024Better than the national rate — Postoperative sepsis rate: 1.66 (0.42 to 2.91) · 8,436 cases, Jul 2022 – Jun 2024Better than the national rate — Pressure ulcer rate: 0.09 (0 to 0.3) · 44,511 cases, Jul 2022 – Jun 2024Better than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.575, Oct 2024 – Sep 2025Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.632, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.22, Oct 2024 – Sep 2025Better than the national rate — MRSA Bacteremia: 0.743, Oct 2024 – Sep 2025Better than the national rate — Rate of emergency department (ED) visits for patients receiving outpatient chemotherapy: 3.6 (2.9 to 4.4) · 1,897 cases, Jan 2024 – Dec 2024Better than the national rate — Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies): 10.6 (8.9 to 12.6) · 7,950 cases, Jan 2022 – Dec 2024Better than the national rate — Ratio of unplanned hospital visits after hospital outpatient surgery: 0.6 (0.6 to 0.7) · 4,225 cases, Jan 2024 – Dec 2024
See every measure and the patient survey for New York-Presbyterian Hospital
Behind the star rating — Deaths: 6 better, 2 the same, 0 worse of 8 measures. Safety: 4 better, 4 the same, 0 worse of 8 measures. Readmissions: 3 better, 6 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.
| Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits | 15.2 (13.8 to 16.7) · 1,897 cases | Worse | Jan 2024 – Dec 2024 |
| Abdominopelvic accidental puncture or laceration rateComplications and deaths | 0.35 (0 to 0.86) · 10,364 cases | Better | Jul 2022 – Jun 2024 |
| CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths | 0.4 (0.3 to 0.51) | Better | Jul 2022 – Jun 2024 |
| In-hospital fall-associated fracture rateComplications and deaths | 0.14 (0.03 to 0.25) · 52,654 cases | Better | Jul 2022 – Jun 2024 |
| Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths | 1.48 (0.6 to 2.36) · 14,926 cases | Better | Jul 2022 – Jun 2024 |
| Postoperative acute kidney injury requiring dialysis rateComplications and deaths | 0.48 (0 to 1.06) · 8,078 cases | Better | Jul 2022 – Jun 2024 |
| Postoperative hemorrhage or hematoma rateComplications and deaths | 0.94 (0.21 to 1.66) · 12,529 cases | Better | Jul 2022 – Jun 2024 |
| Postoperative respiratory failure rateComplications and deaths | 6.15 (4.51 to 7.79) · 8,277 cases | Better | Jul 2022 – Jun 2024 |
| Postoperative sepsis rateComplications and deaths | 1.66 (0.42 to 2.91) · 8,436 cases | Better | Jul 2022 – Jun 2024 |
| Pressure ulcer rateComplications and deaths | 0.09 (0 to 0.3) · 44,511 cases | Better | Jul 2022 – Jun 2024 |
| Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections | 0.575 | Better | Oct 2024 – Sep 2025 |
| Central Line Associated Bloodstream Infection (ICU + select Wards)Infections | 0.632 | Better | Oct 2024 – Sep 2025 |
| Clostridium Difficile (C.Diff)Infections | 0.22 | Better | Oct 2024 – Sep 2025 |
| MRSA BacteremiaInfections | 0.743 | Better | Oct 2024 – Sep 2025 |
| Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits | 3.6 (2.9 to 4.4) · 1,897 cases | Better | Jan 2024 – Dec 2024 |
| Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits | 10.6 (8.9 to 12.6) · 7,950 cases | Better | Jan 2022 – Dec 2024 |
| Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits | 0.6 (0.6 to 0.7) · 4,225 cases | Better | Jan 2024 – Dec 2024 |
| Death rate among surgical inpatients with serious treatable complicationsComplications and deaths | 156.83 (135.92 to 177.74) · 798 cases | No different | Jul 2022 – Jun 2024 |
| Death rate for CABG surgery patientsComplications and deaths | 1.7 · 382 cases | None | Jul 2022 – Jun 2025 |
| Death rate for COPD patientsComplications and deaths | 5.7 · 574 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart attack patientsComplications and deaths | 9.6 · 616 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart failure patientsComplications and deaths | 6.9 · 2,532 cases | None | Jul 2022 – Jun 2025 |
| Death rate for pneumonia patientsComplications and deaths | 10.9 · 3,140 cases | None | Jul 2022 – Jun 2025 |
| Death rate for stroke patientsComplications and deaths | 7.7 · 1,821 cases | None | Jul 2023 – Jun 2025 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths | 1.8 · 24,470 cases | None | Jul 2024 – Jun 2025 |
| Iatrogenic pneumothorax rateComplications and deaths | 0.11 (0 to 0.22) · 48,588 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative wound dehiscence rateComplications and deaths | 0.84 (0 to 1.9) · 3,187 cases | No different | Jul 2022 – Jun 2024 |
| Rate of complications for hip/knee replacement patientsComplications and deaths | 4 · 1,240 cases | None | Apr 2023 – Mar 2025 |
| SSI - Abdominal HysterectomyInfections | 0.314 | No different | Oct 2024 – Sep 2025 |
| SSI - Colon SurgeryInfections | 0.717 | No different | Oct 2024 – Sep 2025 |
| Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits | 13.6 · 1,045 cases | None | Jul 2023 – Jun 2025 |
| Heart failure (HF) 30-Day Readmission RateUnplanned return visits | 20.4 · 5,234 cases | None | Jul 2023 – Jun 2025 |
| Hospital return days for heart attack patientsUnplanned return visits | 11 · 686 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for heart failure patientsUnplanned return visits | 3 · 2,938 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for pneumonia patientsUnplanned return visits | 13.4 · 3,258 cases | None | Jul 2022 – Jun 2025 |
| Pneumonia (PN) 30-Day Readmission RateUnplanned return visits | 16.4 · 5,005 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission after hip/knee replacementUnplanned return visits | 5.5 · 1,230 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for CABGUnplanned return visits | 9.9 · 411 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits | 20.6 · 1,226 cases | None | Jul 2023 – Jun 2025 |
What patients said (2,640 patients answered, 20% of those asked)
| Cleanliness | 3 |
| Nurse communication | 3 |
| Doctor communication | 3 |
| Communication about medicines | 3 |
| Discharge information | 3 |
| Overall hospital rating | 3 |
| Quietness | 2 |
| Recommend hospital | 4 |
| Room was "always" clean | 65% |
| Nurses "always" communicated well | 76% |
| Doctors "always" communicated well | 78% |
| Staff "always" explained | 59% |
| Yes, staff "did" give patients this information | 85% |
| Yes, staff "did" give patients information about help after discharge | 84% |
| Doctors "always" explained things so they could understand | 74% |
| Doctors "always" listened carefully | 77% |
| Doctors "always" treated them with courtesy and respect | 84% |
| Patients who gave a rating of "9" or "10" (high) | 69% |
| Staff "always" explained new medications | 74% |
| Nurses "always" explained things so they could understand | 73% |
| Nurses "always" listened carefully | 72% |
| Nurses "always" treated them with courtesy and respect | 82% |
| "Always" quiet at night | 49% |
| "YES", patients would definitely recommend the hospital | 72% |
| Staff "always" explained possible side effects | 45% |
| Yes, staff "did" give patients information about possible symptoms | 87% |
Original Medicare doctor bills
$14,920
Medicare paid this office $14,920 for 61 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Replacement of thigh bone and hip joint with prosthesis | 24 | $5,614 | $234 |
| Replacement of knee joint, both sides of knee | 24 | $4,525 | $189 |
Procedures Medicare counted
| Hip replacement | 30 | More than 76% of doctors who do this |
| Knee replacement | 43 | More than 75% of doctors who do this |
Who their Medicare patients are
61 Original Medicare patients in 2024. Average age 76 · Women 56% · Health risk score 1.58. Above the middle of the specialty; the typical orthopedic surgery clinician is at 1.13.
Conditions among them: High blood pressure 75% · Diabetes 43% · Coronary heart disease 39% · Depression 33% · Heart failure 31% · Atrial fibrillation 30% · Chronic kidney disease 26% · Cancer 23%.
The office billed $492,400, Medicare allowed $18,726 and paid $14,920; for 67 services of 13 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.
Drugs they prescribed that Part D paid
$758
Pharmacies billed $758 in 2024.
This is pharmacy cost, not the office bill, and not what patients paid.
Opioids were 36% of their Part D prescriptions (20 of 56) in 2024. Above the middle of the specialty; the typical orthopedic surgery clinician is at 31%.
55 generic and fewer than 11 brand-name prescriptions · $758 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.
| Oxycodone | 12 | $74 | $6 |
Year by year
| 2024 | 56 | 29 | 36% (20) | None | $758 |
| 2023 | 12 | None | None | None | $193 |
| 2022 | 11 | None | None | 0% | $1,117 |
Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.
Money from drug and device companies
$12,650 in 2025
| 2025 | 4 | 46 | None | $12,650 |
| 2024 | 7 | 24 | None | $9,071 |
| 2023 | 2 | 24 | None | $1,572 |
| 2022 | 5 | 35 | None | $4,820 |
Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.
A payment is not proof that care is biased.
| Smith+Nephew | Journey II | $7,726 | 7 payments
|
| Zimmer Biomet Holdings | Oxford | $4,858 | 37 payments
|
| LinkBio | None | $41 | 1 payment
|
| Vertex Pharmaceuticals | Journavx | $25 | 1 payment
|
See all 46 published payments
| Zimmer Biomet Holdings | Education · 2025-10-11 | Oxford | $77 |
| Zimmer Biomet Holdings | Travel · 2025-10-11 | None | $35 |
| Zimmer Biomet Holdings | Travel · 2025-10-11 | None | $940 |
| Zimmer Biomet Holdings | Travel · 2025-10-11 | Oxford | $473 |
| Zimmer Biomet Holdings | Meals · 2025-10-11 | Oxford | $98 |
| Zimmer Biomet Holdings | Meals · 2025-10-11 | Oxford | $49 |
| Zimmer Biomet Holdings | Meals · 2025-10-11 | Oxford | $71 |
| Zimmer Biomet Holdings | Meals · 2025-10-11 | Oxford | $118 |
| Zimmer Biomet Holdings | Meals · 2025-10-11 | Oxford | $17 |
| Zimmer Biomet Holdings | Meals · 2025-10-11 | Oxford | $49 |
| Zimmer Biomet Holdings | Meals · 2025-10-11 | Oxford | $71 |
| Zimmer Biomet Holdings | Travel · 2025-10-10 | Oxford | $473 |
| Zimmer Biomet Holdings | Meals · 2025-07-31 | Rosa | $103 |
| Zimmer Biomet Holdings | Meals · 2025-07-02 | None | $112 |
| Zimmer Biomet Holdings | Meals · 2025-06-28 | None | $67 |
| Zimmer Biomet Holdings | Meals · 2025-06-28 | None | $20 |
| Zimmer Biomet Holdings | Travel · 2025-06-27 | Persona | $4 |
| Zimmer Biomet Holdings | Meals · 2025-06-26 | None | $57 |
| Zimmer Biomet Holdings | Meals · 2025-06-26 | None | $45 |
| Zimmer Biomet Holdings | Meals · 2025-06-26 | None | $48 |
| Zimmer Biomet Holdings | Meals · 2025-06-26 | Persona | $16 |
| Zimmer Biomet Holdings | Travel · 2025-06-26 | Persona | $13 |
| Zimmer Biomet Holdings | Travel · 2025-06-25 | None | $35 |
| Zimmer Biomet Holdings | Travel · 2025-06-25 | None | $476 |
| Zimmer Biomet Holdings | Meals · 2025-06-25 | None | $33 |
| Zimmer Biomet Holdings | Meals · 2025-06-25 | None | $14 |
| Zimmer Biomet Holdings | Meals · 2025-06-25 | None | $44 |
| Zimmer Biomet Holdings | Travel · 2025-06-25 | Persona | $390 |
| Zimmer Biomet Holdings | Travel · 2025-06-25 | Persona | $11 |
| Zimmer Biomet Holdings | Meals · 2025-05-27 | Avenir | $199 |
| Vertex Pharmaceuticals | Meals · 2025-05-20 | Journavx | $25 |
| Zimmer Biomet Holdings | Meals · 2025-05-20 | Rosa | $111 |
| LinkBio | Meals · 2025-05-16 | None | $41 |
| Zimmer Biomet Holdings | Meals · 2025-04-01 | None | $27 |
| Zimmer Biomet Holdings | Meals · 2025-04-01 | None | $36 |
| Zimmer Biomet Holdings | Meals · 2025-04-01 | None | $6 |
| Zimmer Biomet Holdings | Meals · 2025-04-01 | None | $6 |
| Smith+Nephew | Meals · 2025-03-29 | Journey II | $96 |
| Smith+Nephew | Travel · 2025-03-28 | Journey II | $459 |
| Smith+Nephew | Meals · 2025-03-28 | Journey II | $218 |
| Smith+Nephew | Travel · 2025-03-28 | Journey II | $90 |
| Smith+Nephew | Travel · 2025-03-28 | Journey II | $599 |
| Smith+Nephew | Travel · 2025-03-28 | Journey II | $14 |
| Zimmer Biomet Holdings | Education · 2025-03-22 | None | $331 |
| Zimmer Biomet Holdings | Meals · 2025-01-29 | Persona | $185 |
| Smith+Nephew | Grant · 2025-01-21 | None | $6,250 |
See earlier years (2024, 2023, 2022)
2024: $9,071
| Smith+Nephew | Hip7 | $6,372 | 2 payments
|
| Medical Device Business Services | Velys | $1,285 | 7 payments
|
| Stryker | Mako | $680 | 6 payments
|
| Globus Medical | Autobahn | $348 | 4 payments
|
| DePuy Synthes Sales | Actis | $185 | 2 payments
|
| Zimmer Biomet Holdings | Persona | $174 | 2 payments
|
| Integra LifeSciences | Integra | $26 | 1 payment
|
2023: $1,572
| Stryker | Gamma | $1,558 | 23 payments
|
| Zimmer Biomet Holdings | Affixus | $14 | 1 payment
|
2022: $4,820
| Medtronic | Cd Horizon Spinal System | $1,799 | 16 payments
|
| Stryker | Profyle | $1,767 | 15 payments
|
| Saxum Surgical | None | $1,217 | 2 payments
|
| Innovation Technologies | Irrisept | $22 | 1 payment
|
| ConvaTec | Aquacel Ag+ Extra | $15 | 1 payment
|
Professional record
- NPI
- 1538629589
- Trained
- University of Vermont College of Medicine, 2019
- Gender
- Female
More record details
- Sole proprietor
- No
- Taxonomy
- Orthopedic surgery (207X00000X); Student in a training program (390200000X)
- Mailing address
- 622 W 168th St Ph 11, New York, NY, 10032
- NPI first listed
- 2019-03-24
- NPI last updated
- 2025-03-21
- NPI record certified
- 2025-03-21
This is when the NPI record was last certified, not a medical board exam.
This office lists an electronic records connection.