Zachary Tan, MD
NPI 1457989550 · Emergency Medicine Physician · Brooklyn, NY
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Zachary Tan, MD is a Emergency Medicine Physician provider in Brooklyn, NY (NPI 1457989550).
Provider details
- NPI number
- 1457989550
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 324420 (NY)
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 tenure25% of score
6 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
281 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 Moderate Level of Medical Decision Making99284 | 155 | $135 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 55 | $196 |
| Critical Care, First 30-74 Minutes99291 | 35 | $237 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 20 | $80 |
| Ultrasound of Heart, Follow-Up93308 | 16 | $27 |
Typical Medicare-allowed amounts for these services range $27–$237 (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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$20 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-04-01
- Last updated
- 2023-07-14
- Certified
- 2023-07-14
Frequently asked questions
- What is Zachary Tan's NPI number?
- Zachary Tan's National Provider Identifier (NPI) is 1457989550, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zachary Tan's specialty?
- Zachary Tan is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Zachary Tan located?
- Zachary Tan's practice location on file with NPPES is 506 6th St, Brooklyn, NY 11215-3609.
- What is Zachary Tan's phone number?
- The practice phone number listed in the NPPES registry for Zachary Tan is (718) 780-3000.
- Does Zachary Tan accept Medicare?
- Zachary Tan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Zachary Tan's NPI active?
- Yes — Zachary Tan's NPI (1457989550) is active in the NPPES registry as of the last update on 2023-07-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.