John Len, MD
NPI 1912987496 · General Practice Physician · Cohoes, NY
Enrolled with Medicare as Practitioner - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Len, MD is a General Practice Physician provider in Cohoes, NY (NPI 1912987496).
Provider details
- NPI number
- 1912987496
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 109395 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
Registry dates
- Enumerated
- 2006-01-19
- Last updated
- 2016-03-07
Frequently asked questions
- What is John Len's NPI number?
- John Len's National Provider Identifier (NPI) is 1912987496, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Len's specialty?
- John Len is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is John Len located?
- John Len's practice location on file with NPPES is 64 Howard St, Cohoes, NY 12047-3004.
- What is John Len's phone number?
- The practice phone number listed in the NPPES registry for John Len is (518) 237-7345.
- Does John Len accept Medicare?
- John Len is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Len's NPI active?
- Yes — John Len's NPI (1912987496) is active in the NPPES registry as of the last update on 2016-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.