Gary Zhou, MD
NPI 1639266901 · Anesthesiology Physician · New Haven, CT
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gary Zhou, MD is a Anesthesiology Physician provider in New Haven, CT (NPI 1639266901).
Provider details
- NPI number
- 1639266901
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 038273 (CT)
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
90 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) |
|---|---|---|
| Anesthesia for Lens Surgery00142 | 21 | $64 |
| Anesthesia for Procedure for Total Knee Joint Replacement01402 | 17 | $142 |
| Anesthesia for Other Procedure on Lower Abdomen00840 | 15 | $135 |
| Injection of Anesthetic Agent And/Or Steroid Into Arm Nerve Bundle (brachial Plexus)64415 | 13 | $66 |
| Anesthesia for Other Procedure on Skin of Arms, Legs, and Front Body00400 | 12 | $88 |
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 12 | $77 |
Typical Medicare-allowed amounts for these services range $64–$142 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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
Registry dates
- Enumerated
- 2006-10-06
- Last updated
- 2008-01-04
Frequently asked questions
- What is Gary Zhou's NPI number?
- Gary Zhou's National Provider Identifier (NPI) is 1639266901, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Zhou's specialty?
- Gary Zhou is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Gary Zhou located?
- Gary Zhou's practice location on file with NPPES is 333 Cedar St, New Haven, CT 06510-3206.
- What is Gary Zhou's phone number?
- The practice phone number listed in the NPPES registry for Gary Zhou is (203) 785-2802.
- Does Gary Zhou accept Medicare?
- Gary Zhou is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gary Zhou's NPI active?
- Yes — Gary Zhou's NPI (1639266901) is active in the NPPES registry as of the last update on 2008-01-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.