Quoc-Sy Nguyen, M.D.
NPI 1871911644 · Anesthesiology Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Quoc-Sy Nguyen, M.D. is a Anesthesiology Physician provider in San Diego, CA (NPI 1871911644).
Provider details
- NPI number
- 1871911644
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A153760 (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
12 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
61 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) |
|---|---|---|
| Insertion of Artery Tube for Blood Sampling Or Infusion Through Skin36620 | 23 | $43 |
| Anesthesia for Insertion of Permanent Heart Pacemaker00530 | 13 | $171 |
| Anesthesia for Procedure to Assess Heart Electrical Activity00537 | 13 | $301 |
| Anesthesia for Procedure on Heart and Large Blood Vessels00560 | 12 | $476 |
Typical Medicare-allowed amounts for these services range $43–$476 (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.
Practice location
Mailing address
Additional practice locations (1)
- 1 Gustave L Levy PlNew York, NY 10029-6504Phone: (212) 241-6500
Registry dates
- Enumerated
- 2014-03-31
- Last updated
- 2019-06-21
Frequently asked questions
- What is Quoc-Sy Nguyen's NPI number?
- Quoc-Sy Nguyen's National Provider Identifier (NPI) is 1871911644, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Quoc-Sy Nguyen's specialty?
- Quoc-Sy Nguyen is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Quoc-Sy Nguyen located?
- Quoc-Sy Nguyen's practice location on file with NPPES is 200 W Arbor Dr, San Diego, CA 92103.
- What is Quoc-Sy Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Quoc-Sy Nguyen is (800) 926-8273.
- Does Quoc-Sy Nguyen accept Medicare?
- Quoc-Sy Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Quoc-Sy Nguyen's NPI active?
- Yes — Quoc-Sy Nguyen's NPI (1871911644) is active in the NPPES registry as of the last update on 2019-06-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.