Simon Chen, MD
NPI 1093169500 · Psychiatry Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Simon Chen, MD is a Psychiatry Physician provider in Los Angeles, CA (NPI 1093169500).
Provider details
- NPI number
- 1093169500
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A157162 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
10 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
51 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 51 | $97 |
Typical Medicare-allowed amounts for these services range $97–$97 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Sertraline Hcl | 77 |
| Bupropion Hclbrand: Bupropion Xl | 48 |
| Mirtazapine | 36 |
| Escitalopram Oxalate | 36 |
| Fluoxetine Hcl | 34 |
| Aripiprazole | 28 |
| Benztropine Mesylate | 27 |
| Quetiapine Fumarate | 25 |
| Trazodone Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$39 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (3)
- 801 W San Bernardino RdCovina, CA 91722-3621Phone: (626) 541-0207
- 8019 Compton AveLos Angeles, CA 90001-3409Phone: (323) 586-7333
- 6800 Indiana Ave Ste 260Riverside, CA 92506-4287Phone: (951) 782-0040
Registry dates
- Enumerated
- 2016-04-20
- Last updated
- 2026-04-16
- Certified
- 2026-04-16
Frequently asked questions
- What is Simon Chen's NPI number?
- Simon Chen's National Provider Identifier (NPI) is 1093169500, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Simon Chen's specialty?
- Simon Chen is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Simon Chen located?
- Simon Chen's practice location on file with NPPES is 3881 S Western Ave, Los Angeles, CA 90062-1105.
- What is Simon Chen's phone number?
- The practice phone number listed in the NPPES registry for Simon Chen is (626) 441-6479.
- Does Simon Chen accept Medicare?
- Simon Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Simon Chen's NPI active?
- Yes — Simon Chen's NPI (1093169500) is active in the NPPES registry as of the last update on 2026-04-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.