Dr. William R. Ryan, M.D.
Facial Plastic Surgery (Plastic Surgery within the Head & Neck (Otolaryngology) Physician)
- Medicare participating
At a glance
- Medical school
- Stanford University School of Medicine (2005)
- Years since graduation
- 21
- In the NPI registry since
- 2007
- Medicare patients seen, 2024
- 282
Licensed in California since 2006, 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
- 2005Medical school: Stanford University School of Medicine
- 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
-
Plastic Surgery within the Head & Neck (Otolaryngology) Physician primary
CA license A97821 (first issued 2006; current)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- California PAcific Medical Center- Van Ness Campus San Francisco, CA
- California PAcific Medical Ctr-Davies Campus Hosp San Francisco, CA
Medical groups
- Sutter Bay Medical Foundation (3,829 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
- 282
- Services billed
- 1,042
- Patients’ average age
- 74
| Service | Times | Patients |
|---|---|---|
| Diagnostic exam of voice box using a flexible endoscope | 191 | 133 |
| Established patient office or other outpatient visit, 10-19 minutes | 103 | 85 |
| Established patient office or other outpatient visit, 20-29 minutes | 72 | 62 |
| Ultrasound scan of head and neck soft tissue | 72 | 69 |
| New patient office or other outpatient visit, 60-74 minutes | 50 | 50 |
| Established patient office or other outpatient visit, 30-39 minutes | 34 | 30 |
| Removal of lymph nodes, muscle, and tissue of neck | 33 | 33 |
| New patient office or other outpatient visit, 45-59 minutes | 29 | 29 |
| Removal of growth of saliva gland with release of facial nerve | 19 | 19 |
| Established patient office or other outpatient visit, 40-54 minutes | 18 | 17 |
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.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Amoxicillin-Clavulanate Potass (amoxicillin/potassium clav) Other prescribers in San Francisco, CA | 13 |
| Pentoxifylline Other prescribers in San Francisco, CA | 13 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 6 companies reported 28 payments worth $21,768 in total to this clinician.
| Regeneron Healthcare Solutions, Inc. | $14,674 |
|---|---|
| Intuitive Surgical, Inc. | $6,345 |
| Stryker Corporation | $252 |
| Integra Lifesciences Corporation | $183 |
| Acera Surgical, Inc. | $166 |
| DePuy Synthes Sales Inc. | $147 |
| Consulting Fee | $12,528 |
|---|---|
| Education | $6,000 |
| Travel and Lodging | $1,827 |
| Food and Beverage | $1,413 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Regeneron Healthcare Solutions, Inc. Sep 19, 2025 | Consulting Fee LIBTAYO · ONCOLOGY | $6,264 |
| Regeneron Healthcare Solutions, Inc. Sep 19, 2025 | Consulting Fee LIBTAYO · ONCOLOGY | $6,264 |
| Intuitive Surgical, Inc. Mar 5, 2025 | Education Da Vinci Surgical System · SURGERY | $4,000 |
| Intuitive Surgical, Inc. Nov 7, 2025 | Education Da Vinci Surgical System · SURGERY | $2,000 |
| Regeneron Healthcare Solutions, Inc. Jul 22, 2025 | Travel and Lodging LIBTAYO · ONCOLOGY · travel to NEW YORK, NY · in-kind | $648 |
| Regeneron Healthcare Solutions, Inc. Oct 15, 2025 | Travel and Lodging LIBTAYO · ONCOLOGY · travel to NEW YORK, NY · in-kind | $381 |
| Regeneron Healthcare Solutions, Inc. Jul 22, 2025 | Travel and Lodging LIBTAYO · ONCOLOGY · travel to NEW YORK, NY · in-kind | $328 |
| Regeneron Healthcare Solutions, Inc. Jul 31, 2025 | Travel and Lodging LIBTAYO · ONCOLOGY · travel to NEW YORK, NY · in-kind | $164 |
| Regeneron Healthcare Solutions, Inc. Aug 1, 2025 | Travel and Lodging LIBTAYO · ONCOLOGY · travel to NEW YORK, NY · in-kind | $159 |
| Regeneron Healthcare Solutions, Inc. Sep 19, 2025 | Travel and Lodging LIBTAYO · ONCOLOGY · travel to NEW YORK, NY · in-kind | $76.00 |
All 12 payments other than meals, newest first
| Company | What it was for | Amount |
|---|---|---|
| Intuitive Surgical, Inc. Nov 7, 2025 | Education Da Vinci Surgical System · SURGERY | $2,000 |
| Regeneron Healthcare Solutions, Inc. Oct 15, 2025 | Travel and Lodging LIBTAYO · ONCOLOGY · travel to NEW YORK, NY · in-kind | $381 |
| Regeneron Healthcare Solutions, Inc. Sep 19, 2025 | Consulting Fee LIBTAYO · ONCOLOGY | $6,264 |
| Regeneron Healthcare Solutions, Inc. Sep 19, 2025 | Consulting Fee LIBTAYO · ONCOLOGY | $6,264 |
| Regeneron Healthcare Solutions, Inc. Sep 19, 2025 | Travel and Lodging LIBTAYO · ONCOLOGY · travel to NEW YORK, NY · in-kind | $76.00 |
| Regeneron Healthcare Solutions, Inc. Aug 1, 2025 | Travel and Lodging LIBTAYO · ONCOLOGY · travel to NEW YORK, NY · in-kind | $159 |
| Regeneron Healthcare Solutions, Inc. Jul 31, 2025 | Travel and Lodging LIBTAYO · ONCOLOGY · travel to NEW YORK, NY · in-kind | $164 |
| Regeneron Healthcare Solutions, Inc. Jul 22, 2025 | Travel and Lodging LIBTAYO · ONCOLOGY · travel to NEW YORK, NY · in-kind | $648 |
| Regeneron Healthcare Solutions, Inc. Jul 22, 2025 | Travel and Lodging LIBTAYO · ONCOLOGY · travel to NEW YORK, NY · in-kind | $328 |
| Regeneron Healthcare Solutions, Inc. Jul 22, 2025 | Travel and Lodging LIBTAYO · ONCOLOGY · travel to NEW YORK, NY · in-kind | $35.25 |
| Regeneron Healthcare Solutions, Inc. Jul 22, 2025 | Travel and Lodging LIBTAYO · ONCOLOGY · travel to NEW YORK, NY · in-kind | $35.25 |
| Intuitive Surgical, Inc. Mar 5, 2025 | Education Da Vinci Surgical System · SURGERY | $4,000 |
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.