Dr. Paul Harmatz, MD
Pediatric Gastroenterology (Pediatric Gastroenterology Physician)
At a glance
- In the NPI registry since
- 2006
Licensed in California since 1977, 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
-
Pediatric Gastroenterology Physician primary
CA license G35255 (first issued 1977; 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, 4 companies reported 31 payments worth $37,137 in total to this clinician.
| BioMarin Pharmaceutical Inc. | $28,112 |
|---|---|
| Ultragenyx Pharmaceutical Inc. | $7,256 |
| Ns Pharma, Inc. | $1,735 |
| Intrabio Inc | $33.44 |
| Consulting Fee | $24,047 |
|---|---|
| Travel and Lodging | $10,141 |
| Compensation for services other than consulting (speaking, faculty) | $2,652 |
| Food and Beverage | $297 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| BioMarin Pharmaceutical Inc. Jul 15, 2025 | Travel and Lodging VIMIZIM · MPS IVA · travel to Vienna, Austria · in-kind | $9,246 |
| Ultragenyx Pharmaceutical Inc. Apr 1, 2025 | Consulting Fee | $3,456 |
| BioMarin Pharmaceutical Inc. Oct 31, 2025 | Compensation for services other than consulting (speaking, faculty) VIMIZIM · MPS IVA | $1,828 |
| Ultragenyx Pharmaceutical Inc. Jul 7, 2025 | Consulting Fee | $1,800 |
| Ns Pharma, Inc. Nov 12, 2025 | Consulting Fee | $1,735 |
| BioMarin Pharmaceutical Inc. Dec 31, 2025 | Consulting Fee | $1,369 |
| BioMarin Pharmaceutical Inc. Dec 31, 2025 | Consulting Fee | $1,369 |
| BioMarin Pharmaceutical Inc. Dec 31, 2025 | Consulting Fee | $1,369 |
| BioMarin Pharmaceutical Inc. Dec 31, 2025 | Consulting Fee | $1,369 |
| BioMarin Pharmaceutical Inc. Dec 31, 2025 | Consulting Fee | $1,369 |
All 25 payments other than meals, newest first
| Company | What it was for | Amount |
|---|---|---|
| BioMarin Pharmaceutical Inc. Dec 31, 2025 | Consulting Fee | $1,369 |
| BioMarin Pharmaceutical Inc. Dec 31, 2025 | Consulting Fee | $1,369 |
| BioMarin Pharmaceutical Inc. Dec 31, 2025 | Consulting Fee | $1,369 |
| BioMarin Pharmaceutical Inc. Dec 31, 2025 | Consulting Fee | $1,369 |
| BioMarin Pharmaceutical Inc. Dec 31, 2025 | Consulting Fee | $1,369 |
| BioMarin Pharmaceutical Inc. Dec 31, 2025 | Consulting Fee | $1,369 |
| BioMarin Pharmaceutical Inc. Dec 31, 2025 | Consulting Fee | $1,369 |
| BioMarin Pharmaceutical Inc. Dec 31, 2025 | Consulting Fee | $1,369 |
| BioMarin Pharmaceutical Inc. Dec 31, 2025 | Consulting Fee | $1,369 |
| BioMarin Pharmaceutical Inc. Dec 31, 2025 | Consulting Fee | $1,369 |
| BioMarin Pharmaceutical Inc. Dec 31, 2025 | Consulting Fee | $1,369 |
| Ultragenyx Pharmaceutical Inc. Dec 9, 2025 | Consulting Fee | $600 |
| Ns Pharma, Inc. Nov 12, 2025 | Consulting Fee | $1,735 |
| BioMarin Pharmaceutical Inc. Oct 31, 2025 | Compensation for services other than consulting (speaking, faculty) VIMIZIM · MPS IVA | $1,828 |
| BioMarin Pharmaceutical Inc. Oct 31, 2025 | Compensation for services other than consulting (speaking, faculty) NAGLAZYME · MPS VI | $824 |
| BioMarin Pharmaceutical Inc. Oct 31, 2025 | Travel and Lodging VIMIZIM · MPS IVA · travel to San Francisco, CA · in-kind | $59.62 |
| BioMarin Pharmaceutical Inc. Oct 16, 2025 | Travel and Lodging VIMIZIM · MPS IVA · travel to Vienna, Austria · in-kind | $661 |
| BioMarin Pharmaceutical Inc. Oct 16, 2025 | Travel and Lodging VIMIZIM · MPS IVA · travel to Vienna, Austria · in-kind | $69.99 |
| BioMarin Pharmaceutical Inc. Oct 16, 2025 | Travel and Lodging VIMIZIM · MPS IVA · travel to Vienna, Austria · in-kind | $69.99 |
| BioMarin Pharmaceutical Inc. Oct 16, 2025 | Travel and Lodging VIMIZIM · MPS IVA · travel to Vienna, Austria · in-kind | $34.10 |
| Ultragenyx Pharmaceutical Inc. Aug 19, 2025 | Consulting Fee | $600 |
| BioMarin Pharmaceutical Inc. Jul 15, 2025 | Travel and Lodging VIMIZIM · MPS IVA · travel to Vienna, Austria · in-kind | $9,246 |
| Ultragenyx Pharmaceutical Inc. Jul 7, 2025 | Consulting Fee | $1,800 |
| Ultragenyx Pharmaceutical Inc. May 12, 2025 | Consulting Fee | $800 |
| Ultragenyx Pharmaceutical Inc. Apr 1, 2025 | Consulting Fee | $3,456 |
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.
Industry-funded research
Named as a principal investigator on 8 industry-funded studies in 2025, from 3 companies. The companies reported $683,063 in research payments for these studies, mostly to the institutions running them.
- Phase 1/2 Clinical Trial of PR001 in Infants With Type 2 Gaucher Disease (PROVIDE)
Eli Lilly and Company · Active, not recruiting · NCT04411654 - A Phase 2 Open-Label Long-Term Extension Study to Evaluate the Safety and Efficacy of BMN 111 in Children With Achondroplasia
BioMarin Pharmaceutical Inc. - Proof of Concept Study of Vosoritide for the Treatment of Growth Deficits in MPS IVA & VI
BioMarin Pharmaceutical Inc. - An Extension Study to Evaluate the Efficacy and Safety of BMN 111 in Children With Achondroplasia
BioMarin Pharmaceutical Inc. - TAK-665-4003: an open-label, multicenter, phase 4 study to assess the effects of a prophylactic immune tolerizing regimen in mps ii treatment-nave patients planned to receive elaprase who are at risk of developing per…
Takeda Pharmaceuticals U.S.A., Inc. - A Phase 2, Open-Label, Extension Study to Evaluate the Long-Term Safety, Tolerability, and Efficacy of BMN 111 in Children With Achondroplasia
BioMarin Pharmaceutical Inc. - Study of Long Term Safety and Clinical Outcomes of Idursulfase IT and Elaprase Treatment in Pediatric Participants Who Have Completed Study HGT-HIT-094
Takeda Pharmaceuticals U.S.A., Inc. · Completed · NCT02412787 - An Extension Study of HGT-HIT-045 Evaluating Long-Term Safety and Clinical Outcomes of Idursulfase-IT in Conjunction With Elaprase in Pediatric Participants With Hunter Syndrome and Cognitive Impairment
Takeda Pharmaceuticals U.S.A., Inc. · Completed · NCT01506141
From CMS Open Payments research payments, where companies name up to five principal investigators per payment. Research payments usually go to hospitals, universities and research sites, not to the investigator personally. A payment is not evidence of wrongdoing.