Dr. William J. Maloney
Joint Replacement Surgery (Adult Reconstructive Orthopaedic Surgery Physician)
300 Pasteur Dr
Stanford, CA 94305
Who else practices at this address →
Santa Clara County includes mental health (13% of residents) shortage areas. About shortage areas
- Medicare participating
At a glance
- Medical school
- Columbia University College of Physicians and Surgeons (1983)
- Years since graduation
- 43
- In the NPI registry since
- 2007
- Medicare patients seen, 2024
- 246
Licensed in California since 1984, according to the Medical Board of California. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 1983Medical school: Columbia University College of Physicians and Surgeons
- 2007Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Adult Reconstructive Orthopaedic Surgery Physician primary
CA license G52619 (first issued 1984; current) -
Orthopaedic Surgery Physician
CA license G52619 (first issued 1984; current)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Stanford Health Care Stanford, CA
Medical groups
- Stanford Health Care (3,122 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 246
- Services billed
- 360
- Patients’ average age
- 75
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 10-19 minutes | 94 | 83 |
| Established patient office or other outpatient visit, 20-29 minutes | 83 | 77 |
| Replacement of knee joint, both sides of knee | 33 | 30 |
| Musculoskeletal surgical navigational orthopedic operation using imaging guidance | 31 | 29 |
| New patient office or other outpatient visit, 30-44 minutes | 23 | 23 |
| New patient office or other outpatient visit, 45-59 minutes | 16 | 16 |
| Established patient office or other outpatient visit, 30-39 minutes | 13 | 13 |
| Replacement of thigh bone and hip joint with prosthesis | 11 | 11 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Payments from drug and device companies
In 2025, 3 companies reported 96 payments worth $1,622,217 in total to this clinician.
| Stryker Corporation | $1,621,887 |
|---|---|
| Onkos Surgical, Inc. | $177 |
| Davol Inc. | $152 |
| Royalty or License | $1,567,372 |
|---|---|
| Travel and Lodging | $43,806 |
| Consulting Fee | $8,500 |
| Food and Beverage | $2,538 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Stryker Corporation Feb 12, 2025 | Royalty or License ACCOLADE · HIPS | $401,556 |
| Stryker Corporation Aug 14, 2025 | Royalty or License ACCOLADE · HIPS | $394,390 |
| Stryker Corporation May 14, 2025 | Royalty or License ACCOLADE · HIPS | $386,852 |
| Stryker Corporation Nov 13, 2025 | Royalty or License ACCOLADE · HIPS | $384,574 |
| Stryker Corporation Aug 27, 2025 | Consulting Fee MAKO · KNEES, HIPS | $8,500 |
| Stryker Corporation Jul 23, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to ARLINGTON HEIGHTS, IL | $5,917 |
| Stryker Corporation Aug 27, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to ARLINGTON HEIGHTS, IL | $5,917 |
| Stryker Corporation Aug 8, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to ARLINGTON HEIGHTS, IL | $5,045 |
| Stryker Corporation Mar 4, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to ARLINGTON HEIGHTS, IL | $4,885 |
| Stryker Corporation Mar 27, 2025 | Travel and Lodging MAKO · JOINT REPLACEMENT HIPS, KNEES · travel to SAN FRANCISCO, CA | $4,179 |
All 62 payments other than meals, newest first
| Company | What it was for | Amount |
|---|---|---|
| Stryker Corporation Dec 18, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to MAHWAH, NJ | $787 |
| Stryker Corporation Nov 21, 2025 | Travel and Lodging TRIATHLON · KNEES · travel to PALO ALTO, CA | $120 |
| Stryker Corporation Nov 21, 2025 | Travel and Lodging TRIATHLON · KNEES · travel to PALO ALTO, CA | $120 |
| Stryker Corporation Nov 13, 2025 | Royalty or License ACCOLADE · HIPS | $384,574 |
| Stryker Corporation Nov 11, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to SECAUCUS, NJ | $153 |
| Stryker Corporation Nov 7, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to SECAUCUS, NJ | $211 |
| Stryker Corporation Nov 7, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to SECAUCUS, NJ | $175 |
| Stryker Corporation Nov 7, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to NORWOOD, NJ | $28.85 |
| Stryker Corporation Nov 6, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to NORWOOD, NJ | $39.27 |
| Stryker Corporation Nov 6, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to NORWOOD, NJ | $33.66 |
| Stryker Corporation Nov 5, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to NORWOOD, NJ | $45.50 |
| Stryker Corporation Nov 5, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to NORWOOD, NJ | $36.25 |
| Stryker Corporation Oct 9, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to PARK RIDGE, NJ | $409 |
| Stryker Corporation Oct 9, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to PARK RIDGE, NJ | $120 |
| Stryker Corporation Oct 9, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to PARK RIDGE, NJ | $120 |
| Stryker Corporation Sep 24, 2025 | Travel and Lodging travel to NEW YORK, NY | $286 |
| Stryker Corporation Sep 15, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to SECAUCUS, NJ | $176 |
| Stryker Corporation Sep 11, 2025 | Travel and Lodging travel to NORWOOD, NJ | $56.52 |
| Stryker Corporation Aug 27, 2025 | Consulting Fee MAKO · KNEES, HIPS | $8,500 |
| Stryker Corporation Aug 27, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to ARLINGTON HEIGHTS, IL | $5,917 |
| Stryker Corporation Aug 27, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to SAN FRANCISCO, CA | $120 |
| Stryker Corporation Aug 27, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to PALO ALTO, CA | $120 |
| Stryker Corporation Aug 27, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to SAN FRANCISCO, CA | $120 |
| Stryker Corporation Aug 27, 2025 | Travel and Lodging GMRS; MAKO; TRIATHLON · KNEES, HIPS · travel to PALO ALTO, CA | $120 |
| Stryker Corporation Aug 27, 2025 | Travel and Lodging GMRS; MAKO; TRIATHLON · KNEES, HIPS · travel to SAN FRANCISCO, CA | $120 |
| Stryker Corporation Aug 27, 2025 | Travel and Lodging GMRS; MAKO; TRIATHLON · KNEES, HIPS · travel to PALO ALTO, CA | $120 |
| Stryker Corporation Aug 27, 2025 | Travel and Lodging TRIATHLON · KNEES · travel to PALO ALTO, CA | $25.00 |
| Stryker Corporation Aug 18, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to ARLINGTON HEIGHTS, IL | $552 |
| Stryker Corporation Aug 18, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to SECAUCUS, NJ | $189 |
| Stryker Corporation Aug 15, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to SECAUCUS, NJ | $211 |
| Stryker Corporation Aug 14, 2025 | Royalty or License ACCOLADE · HIPS | $394,390 |
| Stryker Corporation Aug 8, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to ARLINGTON HEIGHTS, IL | $5,045 |
| Stryker Corporation Jul 23, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to ARLINGTON HEIGHTS, IL | $5,917 |
| Stryker Corporation Jun 16, 2025 | Travel and Lodging MAKO · JOINT REPLACEMENT HIPS, KNEES · travel to LITTLE FALLS, NJ | $193 |
| Stryker Corporation Jun 12, 2025 | Travel and Lodging MAKO · JOINT REPLACEMENT HIPS, KNEES · travel to LITTLE FALLS, NJ | $227 |
| Stryker Corporation Jun 12, 2025 | Travel and Lodging MAKO · JOINT REPLACEMENT HIPS, KNEES · travel to LITTLE FALLS, NJ | $194 |
| Stryker Corporation May 22, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to PARK RIDGE, NJ | $199 |
| Stryker Corporation May 22, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to SAN FRANCISCO, CA | $120 |
| Stryker Corporation May 22, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to PALO ALTO, CA | $120 |
| Stryker Corporation May 19, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to SECAUCUS, NJ | $152 |
| Stryker Corporation May 16, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to SECAUCUS, NJ | $176 |
| Stryker Corporation May 16, 2025 | Travel and Lodging TRIDENT · HIPS · travel to BROADVIEW, IL | $34.70 |
| Stryker Corporation May 14, 2025 | Royalty or License ACCOLADE · HIPS | $386,852 |
| Stryker Corporation Apr 26, 2025 | Travel and Lodging travel to MORRISTOWN, NJ | $262 |
| Stryker Corporation Apr 23, 2025 | Travel and Lodging TRIDENT · HIPS · travel to BROADVIEW, IL | $14.87 |
| Stryker Corporation Apr 7, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to SECAUCUS, NJ | $176 |
| Stryker Corporation Apr 7, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to SECAUCUS, NJ | $154 |
| Stryker Corporation Mar 27, 2025 | Travel and Lodging MAKO · JOINT REPLACEMENT HIPS, KNEES · travel to SAN FRANCISCO, CA | $4,179 |
| Stryker Corporation Mar 27, 2025 | Travel and Lodging MAKO · JOINT REPLACEMENT HIPS, KNEES · travel to SAN FRANCISCO, CA | $3,805 |
| Stryker Corporation Mar 27, 2025 | Travel and Lodging MAKO · JOINT REPLACEMENT HIPS, KNEES · travel to ARLINGTON, VA | $41.18 |
| Stryker Corporation Mar 27, 2025 | Travel and Lodging MAKO · JOINT REPLACEMENT HIPS, KNEES · travel to SAN FRANCISCO, CA | $41.18 |
| Stryker Corporation Mar 17, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to ARLINGTON HEIGHTS, IL | $2,939 |
| Stryker Corporation Mar 4, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to ARLINGTON HEIGHTS, IL | $4,885 |
| Stryker Corporation Feb 26, 2025 | Travel and Lodging travel to PALO ALTO, CA | $397 |
| Stryker Corporation Feb 26, 2025 | Travel and Lodging travel to BELMONT, CA | $120 |
| Stryker Corporation Feb 12, 2025 | Royalty or License ACCOLADE · HIPS | $401,556 |
| Stryker Corporation Feb 10, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to SECAUCUS, NJ | $238 |
| Stryker Corporation Feb 10, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to SECAUCUS, NJ | $218 |
| Stryker Corporation Jan 29, 2025 | Travel and Lodging travel to PARK RIDGE, NJ | $199 |
| Stryker Corporation Jan 29, 2025 | Travel and Lodging travel to SAN FRANCISCO, CA | $120 |
| Stryker Corporation Jan 29, 2025 | Travel and Lodging travel to PALO ALTO, CA | $113 |
| Stryker Corporation Jan 17, 2025 | Travel and Lodging MAKO · KNEES, HIPS · travel to ARLINGTON HEIGHTS, IL | $2,996 |
Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.