Isaac Chan, M.D.
NPI 1477871770 · Emergency Medicine Physician · New Haven, CT
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Isaac Chan, M.D. is a Emergency Medicine Physician provider in New Haven, CT (NPI 1477871770).
Provider details
- NPI number
- 1477871770
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- Q3650 (TX)
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
16 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
438 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 | 189 | $167 |
| Critical Care, First 30-74 Minutes99291 | 125 | $201 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 88 | $8 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 36 | $115 |
Typical Medicare-allowed amounts for these services range $8–$201 (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 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ondansetronbrand: Ondansetron Odt | 143 | 134 |
| Tramadol Hcl | 120 | 117 |
| Pantoprazole Sodium | 58 | 56 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 35 | 35 |
| Clonidine Hcl | 30 | 25 |
| Acetaminophen With Codeinebrand: Acetaminophen-Codeine | 29 | 23 |
| Levofloxacin | 26 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-05-11
- Last updated
- 2018-02-13
Frequently asked questions
- What is Isaac Chan's NPI number?
- Isaac Chan's National Provider Identifier (NPI) is 1477871770, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Isaac Chan's specialty?
- Isaac Chan is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Isaac Chan located?
- Isaac Chan's practice location on file with NPPES is 20 York St # T-209, New Haven, CT 06510-3220.
- What is Isaac Chan's phone number?
- The practice phone number listed in the NPPES registry for Isaac Chan is (203) 688-2259.
- Does Isaac Chan accept Medicare?
- Isaac Chan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Isaac Chan's NPI active?
- Yes — Isaac Chan's NPI (1477871770) is active in the NPPES registry as of the last update on 2018-02-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.