Dr. Oliver R. Sum-ping, MD
Sleep Medicine (Sleep Medicine (Psychiatry & Neurology) 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
- University of Texas Southwestern Medical School at Dallas (2011)
- Years since graduation
- 15
- In the NPI registry since
- 2011
- Medicare patients seen, 2024
- 358
Licensed in California since 2015, 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. What an NPI is
Education and training
- 2011Medical school: University of Texas Southwestern Medical School at Dallas
- 2011Registered with an NPI (national billing number; not a license date)
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
-
Sleep Medicine (Psychiatry & Neurology) Physician primary
CA license A136548 (first issued 2015; current) -
Neurology Physician
CA license A136548 (first issued 2015; 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
- 358
- Services billed
- 572
- Patients’ average age
- 71
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 30-39 minutes | 176 | 169 |
| New patient office or other outpatient visit, 45-59 minutes | 126 | 126 |
| Sleep study in sleep lab (6 years or older) | 81 | 79 |
| Established patient office or other outpatient visit, 20-29 minutes | 48 | 45 |
| Sleep study including heart rate, breathing, and sleep time | 40 | 40 |
| Established patient office or other outpatient visit, 40-54 minutes | 37 | 33 |
| Sleep study in sleep lab with continuous airway pressure (6 years or older) | 36 | 36 |
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 |
|---|---|
| Methadone Hcl Other prescribers in Stanford, CA | 36 |
| Zolpidem Tartrate Other prescribers in Stanford, CA | 27 |
| Gabapentin Other prescribers in Stanford, CA | 25 |
| Clonazepam Other prescribers in Stanford, CA | 16 |
| Armodafinil | 12 |
| Pregabalin Other prescribers in Stanford, CA | 11 |
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, 3 companies reported 14 payments worth $17,128 in total to this clinician.
| Takeda Pharmaceuticals U.S.A., Inc. | $16,984 |
|---|---|
| Jazz Pharmaceuticals Inc. | $104 |
| Avadel Cns Pharmaceuticals, LLC | $39.28 |
| Consulting Fee | $15,593 |
|---|---|
| Travel and Lodging | $1,201 |
| Food and Beverage | $333 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Takeda Pharmaceuticals U.S.A., Inc. Dec 17, 2025 | Consulting Fee | $9,843 |
| Takeda Pharmaceuticals U.S.A., Inc. Feb 5, 2025 | Consulting Fee | $2,875 |
| Takeda Pharmaceuticals U.S.A., Inc. Feb 5, 2025 | Consulting Fee | $2,875 |
| Takeda Pharmaceuticals U.S.A., Inc. Oct 11, 2025 | Travel and Lodging travel to ROSEMONT, IL · in-kind | $839 |
| Takeda Pharmaceuticals U.S.A., Inc. Oct 10, 2025 | Travel and Lodging travel to ROSEMONT, IL · in-kind | $245 |
| Takeda Pharmaceuticals U.S.A., Inc. Dec 17, 2025 | Travel and Lodging travel to ROSEMONT, IL · in-kind | $58.75 |
| Takeda Pharmaceuticals U.S.A., Inc. Dec 17, 2025 | Travel and Lodging travel to ROSEMONT, IL · in-kind | $58.30 |
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.