Dr. Robert L. Nussbaum, M.D.
Internal Medicine (Internal Medicine Physician)
At a glance
- In the NPI registry since
- 2006
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
- 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Medicare’s Care Compare data doesn’t list this clinician’s medical school. 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
-
Internal Medicine Physician primary
CA license C52306 (first issued 2006; current) -
Clinical Genetics (M.D.) Physician
CA license C52306 (first issued 2006; current) -
Clinical Molecular Genetics Physician
CA license C52306 (first issued 2006; current)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Payments from drug and device companies
In 2025, 1 companies reported 10 payments worth $3,155 in total to this clinician.
| Illumina, Inc. | $3,155 |
|---|
| Travel and Lodging | $2,418 |
|---|---|
| Consulting Fee | $564 |
| Food and Beverage | $173 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Illumina, Inc. Sep 23, 2025 | Consulting Fee Reproductive Health · Genetics · in-kind | $564 |
| Illumina, Inc. Oct 22, 2025 | Travel and Lodging Reproductive Health · Genetics · travel to London, Great Britain (UK) · in-kind | $455 |
| Illumina, Inc. Oct 23, 2025 | Travel and Lodging Reproductive Health · Genetics · travel to London, Great Britain (UK) · in-kind | $446 |
| Illumina, Inc. Oct 21, 2025 | Travel and Lodging Reproductive Health · Genetics · travel to London, Great Britain (UK) · in-kind | $420 |
| Illumina, Inc. Oct 26, 2025 | Travel and Lodging Reproductive Health · Genetics · travel to London, Great Britain (UK) · in-kind | $391 |
| Illumina, Inc. Oct 24, 2025 | Travel and Lodging Reproductive Health · Genetics · travel to London, Great Britain (UK) · in-kind | $383 |
| Illumina, Inc. Nov 10, 2025 | Travel and Lodging Reproductive Health · Genetics · travel to San Diego, CA · in-kind | $324 |
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.