Karen Zarlengo, MD
NPI 1518041953 · Neonatal-Perinatal Medicine Physician · Denver, CO
Enrolled with Medicare as Order and Referring Only - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Zarlengo, MD is a Neonatal-Perinatal Medicine Physician provider in Denver, CO (NPI 1518041953).
Provider details
- NPI number
- 1518041953
- Entity type
- Individual
- Primary specialty
- Neonatal-Perinatal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 22795 (CO)
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
19 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
- 2006-10-24
- Last updated
- 2007-07-08
Frequently asked questions
- What is Karen Zarlengo's NPI number?
- Karen Zarlengo's National Provider Identifier (NPI) is 1518041953, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Zarlengo's specialty?
- Karen Zarlengo is listed in the NPPES registry with a primary specialty of Neonatal-Perinatal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Zarlengo located?
- Karen Zarlengo's practice location on file with NPPES is 1601 E 19th Ave Ste 5300, Denver, CO 80218-1229.
- What is Karen Zarlengo's phone number?
- The practice phone number listed in the NPPES registry for Karen Zarlengo is (303) 839-7440.
- Does Karen Zarlengo accept Medicare?
- Karen Zarlengo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Zarlengo's NPI active?
- Yes — Karen Zarlengo's NPI (1518041953) 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.