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Jan Close, M.D.
NPI 1891867180 · Internal Medicine Physician · Potsdam, NY
Jan Close, M.D. is a Internal Medicine Physician provider in Potsdam, NY (NPI 1891867180).
Provider details
- NPI number
- 1891867180
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 151077 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(95/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% 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
50 Leroy St
Potsdam, NY 13676-1786
Phone: (315) 265-3300
Street-level locationGet directions
Mailing address
50 Leroy St
Potsdam, NY 13676-1786
Additional practice locations (1)
- 133 Park StMalone, NY 12953-1220Phone: (518) 481-2543
Registry dates
- Enumerated
- 2006-11-14
- Last updated
- 2024-07-10
- Certified
- 2024-07-10
Frequently asked questions
- What is Jan Close's NPI number?
- Jan Close's National Provider Identifier (NPI) is 1891867180, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jan Close's specialty?
- Jan Close is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jan Close located?
- Jan Close's practice location on file with NPPES is 50 Leroy St, Potsdam, NY 13676-1786.
- What is Jan Close's phone number?
- The practice phone number listed in the NPPES registry for Jan Close is (315) 265-3300.
- Is Jan Close's NPI active?
- Yes — Jan Close's NPI (1891867180) is active in the NPPES registry as of the last update on 2024-07-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.