Stephen Machnicki, MD
NPI 1881778827 · Diagnostic Radiology Physician · New York, NY
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Machnicki, MD is a Diagnostic Radiology Physician provider in New York, NY (NPI 1881778827).
Provider details
- NPI number
- 1881778827
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 200824 (NY)
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
1,399 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) |
|---|---|---|
| Ct Scan of Chest Without Contrast71250 | 224 | $56 |
| X-Ray of Chest, 1 View71045 | 212 | $9 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 117 | $94 |
| X-Ray of Chest, 2 Views71046 | 65 | $11 |
| Ct Scan of Blood Vessels of Chest With Contrast71275 | 65 | $94 |
| Complete Ultrasound Scan Behind Abdominal Cavity76770 | 56 | $38 |
| Ct Scan of Abdomen and Pelvis Without Contrast |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-25
- Last updated
- 2010-12-30
Frequently asked questions
- What is Stephen Machnicki's NPI number?
- Stephen Machnicki's National Provider Identifier (NPI) is 1881778827, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Machnicki's specialty?
- Stephen Machnicki is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Machnicki located?
- Stephen Machnicki's practice location on file with NPPES is 100 E 77th St, New York, NY 10021-1850.
- What is Stephen Machnicki's phone number?
- The practice phone number listed in the NPPES registry for Stephen Machnicki is (212) 434-2685.
- Does Stephen Machnicki accept Medicare?
- Stephen Machnicki is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Machnicki's NPI active?
- Yes — Stephen Machnicki's NPI (1881778827) is active in the NPPES registry as of the last update on 2010-12-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.