David Chou, M.D.
NPI 1942664578 · Emergency Medicine Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Chou, M.D. is a Emergency Medicine Physician provider in San Francisco, CA (NPI 1942664578).
Provider details
- NPI number
- 1942664578
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
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 tenure28% of score
10 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
394 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 266 | $185 |
| Critical Care, First 30-74 Minutes99291 | 62 | $227 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 43 | $128 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 23 | $9 |
Typical Medicare-allowed amounts for these services range $9–$227 (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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ondansetronbrand: Ondansetron Odt | 43 | 42 |
| Ibuprofen | 28 | 28 |
| Cefdinir | 21 | 21 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 17 | 17 |
| Famotidine | 13 | 13 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 13 | 13 |
| Levofloxacin | 11 | 11 |
Practice location
Mailing address
Additional practice locations (1)
- 1000 10th AveNew York, NY 10019-1147Phone: (212) 523-4000
Registry dates
- Enumerated
- 2016-04-10
- Last updated
- 2019-07-16
Frequently asked questions
- What is David Chou's NPI number?
- David Chou's National Provider Identifier (NPI) is 1942664578, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Chou's specialty?
- David Chou is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is David Chou located?
- David Chou's practice location on file with NPPES is 450 Stanyan St, San Francisco, CA 94117.
- What is David Chou's phone number?
- The practice phone number listed in the NPPES registry for David Chou is (415) 668-1000.
- Does David Chou accept Medicare?
- David Chou is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Chou's NPI active?
- Yes — David Chou's NPI (1942664578) is active in the NPPES registry as of the last update on 2019-07-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.