Jan Slupski, MD
NPI 1487396933 · Internal Medicine Physician · Norwalk, CT
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jan Slupski, MD is a Internal Medicine Physician provider in Norwalk, CT (NPI 1487396933).
Provider details
- NPI number
- 1487396933
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
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 tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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.
Practice location
Mailing address
Additional practice locations (1)
- 34 Maple StNorwalk, CT 06850-3894Phone: (845) 790-2085
Registry dates
- Enumerated
- 2022-04-13
- Last updated
- 2025-04-01
- Certified
- 2025-04-01
Frequently asked questions
- What is Jan Slupski's NPI number?
- Jan Slupski's National Provider Identifier (NPI) is 1487396933, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jan Slupski's specialty?
- Jan Slupski is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jan Slupski located?
- Jan Slupski's practice location on file with NPPES is 497 Westport Ave, Norwalk, CT 06851-4411.
- What is Jan Slupski's phone number?
- The practice phone number listed in the NPPES registry for Jan Slupski is (203) 424-2830.
- Does Jan Slupski accept Medicare?
- Jan Slupski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jan Slupski's NPI active?
- Yes — Jan Slupski's NPI (1487396933) is active in the NPPES registry as of the last update on 2025-04-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.