Simon Ning Riccardi-Zhu, MD
NPI 1437809951 · Psychiatry Physician · Orange, CA
Enrolled with Medicare as Order and Referring Only - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Simon Ning Riccardi-Zhu, MD is a Psychiatry Physician provider in Orange, CA (NPI 1437809951).
Provider details
- NPI number
- 1437809951
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A188527 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Trazodone Hcl | 36 |
| Quetiapine Fumarate | 29 |
| Risperidone | 18 |
| Hydroxyzine Hcl | 17 |
| Clonazepam | 15 |
| Escitalopram Oxalate | 15 |
| Buspirone Hcl | 14 |
| Sertraline Hcl | 14 |
| Duloxetine Hcl | 11 |
| Lorazepam |
Practice location
Mailing address
Additional practice locations (1)
- 265 S Anita Dr Ste 102-104Orange, CA 92868-3355Phone: (714) 410-3500Fax: (714) 410-3526
Registry dates
- Enumerated
- 2022-03-27
- Last updated
- 2026-03-05
- Certified
- 2026-03-05
Frequently asked questions
- What is Simon Ning Riccardi-Zhu's NPI number?
- Simon Ning Riccardi-Zhu's National Provider Identifier (NPI) is 1437809951, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Simon Ning Riccardi-Zhu's specialty?
- Simon Ning Riccardi-Zhu is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Simon Ning Riccardi-Zhu located?
- Simon Ning Riccardi-Zhu's practice location on file with NPPES is 101 the City Dr S, Orange, CA 92868-3201.
- What is Simon Ning Riccardi-Zhu's phone number?
- The practice phone number listed in the NPPES registry for Simon Ning Riccardi-Zhu is (714) 456-7890.
- Does Simon Ning Riccardi-Zhu accept Medicare?
- Simon Ning Riccardi-Zhu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Simon Ning Riccardi-Zhu's NPI active?
- Yes — Simon Ning Riccardi-Zhu's NPI (1437809951) is active in the NPPES registry as of the last update on 2026-03-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.