Mark M. De Leon, DDS
Dentists (general) (Dentist)
633 N Central Ave, Suite 203
Glendale, CA 91203
Who else practices at this address →
Los Angeles County includes primary care (7% of residents) and mental health (13% of residents) shortage areas. About shortage areas
At a glance
- In the NPI registry since
- 2007
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
-
Dentist primary
CA license 38983
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Amoxicillin Other prescribers in Glendale, CA | 19 |
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, 1 companies reported 1 payments worth $25.00 in total to this clinician.
| Ortho Organizers, Inc. | $25.00 |
|---|
| Education | $25.00 |
|---|
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Ortho Organizers, Inc. Apr 24, 2025 | Education CARRIERE SLX 3D · Orthodontics · in-kind | $25.00 |
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.