Nathaniel Smilowitz, MD
NPI 1437475696 · Cardiovascular Disease Physician · New York, NY
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathaniel Smilowitz, MD is a Cardiovascular Disease Physician provider in New York, NY (NPI 1437475696).
Provider details
- NPI number
- 1437475696
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 262021 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
16 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
50 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) |
|---|---|---|
| Use of a Drug to Induce Depression of Consciousness By Physician Performing a Procedure (5 Years Or Older), Initial 15 Minutes99152 | 26 | $13 |
| Insertion of Tube in Coronary Artery for Diagnosis With Review By Radiologist93454 | 12 | $243 |
| Insertion of Tube in Left Lower Heart Chamber and Coronary Artery for Diagnosis With Review By Radiologist93458 | 12 | $300 |
Typical Medicare-allowed amounts for these services range $13–$300 (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.
$13,243 across 15 records (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
- 2010-04-13
- Last updated
- 2022-09-27
- Certified
- 2022-09-27
Frequently asked questions
- What is Nathaniel Smilowitz's NPI number?
- Nathaniel Smilowitz's National Provider Identifier (NPI) is 1437475696, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathaniel Smilowitz's specialty?
- Nathaniel Smilowitz is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Nathaniel Smilowitz located?
- Nathaniel Smilowitz's practice location on file with NPPES is 550 1st Ave, New York, NY 10016-6402.
- What is Nathaniel Smilowitz's phone number?
- The practice phone number listed in the NPPES registry for Nathaniel Smilowitz is (212) 263-5656.
- Does Nathaniel Smilowitz accept Medicare?
- Nathaniel Smilowitz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathaniel Smilowitz's NPI active?
- Yes — Nathaniel Smilowitz's NPI (1437475696) is active in the NPPES registry as of the last update on 2022-09-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.