Theodore Mandelkorn, MD
NPI 1922167220 · Developmental - Behavioral Pediatrics Physician · Mercer Island, WA
Enrolled with Medicare as Order and Referring Only - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Theodore Mandelkorn, MD is a Developmental - Behavioral Pediatrics Physician provider in Mercer Island, WA (NPI 1922167220).
Provider details
- NPI number
- 1922167220
- Entity type
- Individual
- Primary specialty
- Developmental - Behavioral Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD00010762 (WA)
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
- 2006-12-06
- Last updated
- 2007-07-08
Frequently asked questions
- What is Theodore Mandelkorn's NPI number?
- Theodore Mandelkorn's National Provider Identifier (NPI) is 1922167220, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Theodore Mandelkorn's specialty?
- Theodore Mandelkorn is listed in the NPPES registry with a primary specialty of Developmental - Behavioral Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Theodore Mandelkorn located?
- Theodore Mandelkorn's practice location on file with NPPES is 2553 76th Ave Se, Mercer Island, WA 98040-2758.
- What is Theodore Mandelkorn's phone number?
- The practice phone number listed in the NPPES registry for Theodore Mandelkorn is (206) 275-0702.
- Does Theodore Mandelkorn accept Medicare?
- Theodore Mandelkorn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Theodore Mandelkorn's NPI active?
- Yes — Theodore Mandelkorn's NPI (1922167220) 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.