Dr. Marc K. Hellerstein, M.D.
Endocrinology & Diabetes (Endocrinology, Diabetes & Metabolism Physician)
At a glance
- In the NPI registry since
- 2007
Licensed in California since 1987, 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
- 2007Registered 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
-
Endocrinology, Diabetes & Metabolism Physician primary
CA license G60162 (first issued 1987; current) -
Internal Medicine Physician
CA license G60162 (first issued 1987; 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 2 payments worth $7,813 in total to this clinician.
| Eli Lilly and Company | $7,813 |
|---|
| Consulting Fee | $7,813 |
|---|
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Eli Lilly and Company Dec 16, 2025 | Consulting FeeCompany’s descriptionSERVICES TO SUPPORT RESEARCH RELATED ACTIVITIES | $5,625 |
| Eli Lilly and Company Oct 31, 2025 | Consulting FeeCompany’s descriptionSERVICES TO SUPPORT RESEARCH RELATED ACTIVITIES | $2,188 |
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.