Karl Yen, M.D.
NPI 1174591416 · Pediatric Critical Care Medicine Physician · Boston, MA
Karl Yen, M.D. is a Pediatric Critical Care Medicine Physician provider in Boston, MA (NPI 1174591416).
Provider details
- NPI number
- 1174591416
- Entity type
- Individual
- Primary specialty
- Pediatric Critical Care Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 224465 (MA)
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
- 2006-03-11
- Last updated
- 2007-07-08
Frequently asked questions
- What is Karl Yen's NPI number?
- Karl Yen's National Provider Identifier (NPI) is 1174591416, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karl Yen's specialty?
- Karl Yen is listed in the NPPES registry with a primary specialty of Pediatric Critical Care Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karl Yen located?
- Karl Yen's practice location on file with NPPES is 300 Longwood Ave, Boston, MA 02115-5724.
- What is Karl Yen's phone number?
- The practice phone number listed in the NPPES registry for Karl Yen is (617) 355-7327.
- Is Karl Yen's NPI active?
- Yes — Karl Yen's NPI (1174591416) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.