Annabelle Chern, M.D.
NPI 1326131855 · Psychiatry Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Annabelle Chern, M.D. is a Psychiatry Physician provider in San Francisco, CA (NPI 1326131855).
Provider details
- NPI number
- 1326131855
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A76759 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
133 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 78 | $111 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 28 | $75 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 15 | $112 |
| Psychotherapy for Crisis, First Hour90839 | 12 | $144 |
Typical Medicare-allowed amounts for these services range $75–$144 (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 · 26 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Risperidone | 83 | 14 |
| Mirtazapine | 80 | 18 |
| Divalproex Sodium | 70 | — |
| Trazodone Hcl | 61 | 12 |
| Quetiapine Fumarate | 61 | 14 |
| Citalopram Hydrobromidebrand: Citalopram Hbr | 48 | — |
| Duloxetine Hcl | 47 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-02
- Last updated
- 2021-01-26
- Certified
- 2021-01-26
Frequently asked questions
- What is Annabelle Chern's NPI number?
- Annabelle Chern's National Provider Identifier (NPI) is 1326131855, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Annabelle Chern's specialty?
- Annabelle Chern is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Annabelle Chern located?
- Annabelle Chern's practice location on file with NPPES is 729 Filbert St., San Francisco, CA 94133.
- What is Annabelle Chern's phone number?
- The practice phone number listed in the NPPES registry for Annabelle Chern is (415) 352-2041.
- Does Annabelle Chern accept Medicare?
- Annabelle Chern is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Annabelle Chern's NPI active?
- Yes — Annabelle Chern's NPI (1326131855) is active in the NPPES registry as of the last update on 2021-01-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.