Dr. Jonathan Dau, M.D.
Rheumatology (Rheumatology Physician)
- Medicare participating
At a glance
- Years since graduation
- 10
- In the NPI registry since
- 2016
- Medicare patients seen, 2024
- 183
Licensed in California since 2024, 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
- 2016Registered with an NPI (national billing number; not a license date)
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
-
Rheumatology Physician primary
CA license A193324 (first issued 2024; current)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Hoag Memorial Hospital Presbyterian Newport Beach, CA
Medical groups
- Hoag Clinic (460 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
- 183
- Services billed
- 7,704
- Patients’ average age
- 75
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 40-54 minutes | 273 | 158 |
| Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or | 128 | 79 |
| Established patient office or other outpatient visit, 30-39 minutes | 69 | 67 |
| New patient office or other outpatient visit, 60-74 minutes | 63 | 63 |
| Injection, methylprednisolone acetate, 80 mg | 53 | 26 |
| Complete ultrasound scan of joint | 48 | 31 |
| Aspiration and/or injection of fluid large joint using ultrasound guidance | 33 | 20 |
| Established patient office or other outpatient visit, 20-29 minutes | 22 | 22 |
| New patient office or other outpatient visit, 45-59 minutes | 11 | 11 |
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
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, 21 companies reported 122 payments worth $8,657 in total to this clinician.
| Sobi, Inc | $2,401 |
|---|---|
| Novartis Pharmaceuticals Corporation | $2,327 |
| AbbVie Inc. | $1,102 |
| AstraZeneca Pharmaceuticals LP | $471 |
| Amgen Inc. | $453 |
| Lilly USA, LLC | $289 |
| UCB, Inc. | $274 |
| Janssen Biotech, Inc. | $202 |
| Food and Beverage | $4,412 |
|---|---|
| Consulting Fee | $2,665 |
| Travel and Lodging | $1,480 |
| Education | $99.99 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Sobi, Inc Sep 11, 2025 | Consulting Fee Gamifant · Hematology | $2,140 |
| Novartis Pharmaceuticals Corporation Jan 31, 2025 | Travel and Lodging travel to Houston, TX · in-kind | $532 |
| AbbVie Inc. Nov 5, 2025 | Consulting Fee | $525 |
| Novartis Pharmaceuticals Corporation May 17, 2025 | Travel and Lodging travel to Miami, FL · in-kind | $503 |
| Novartis Pharmaceuticals Corporation Jan 31, 2025 | Travel and Lodging travel to Houston, TX · in-kind | $163 |
| Novartis Pharmaceuticals Corporation May 17, 2025 | Travel and Lodging travel to Miami, FL · in-kind | $157 |
| Janssen Biotech, Inc. Apr 15, 2025 | Education TREMFYA · Immunology · in-kind | $99.99 |
| Novartis Pharmaceuticals Corporation Jan 31, 2025 | Travel and Lodging travel to Houston, TX | $54.32 |
| Novartis Pharmaceuticals Corporation May 17, 2025 | Travel and Lodging travel to Miami, FL | $51.72 |
| AbbVie Inc. Oct 23, 2025 | Travel and Lodging travel to HUNTINGTON BEACH, CA · in-kind | $18.20 |
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.