Peggy Chien, DO
NPI 1861416489 · Pediatrics Physician · Holyoke, MA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Peggy Chien, DO is a Pediatrics Physician provider in Holyoke, MA (NPI 1861416489).
Provider details
- NPI number
- 1861416489
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 233965 (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
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
- 2006-07-27
- Last updated
- 2015-09-01
Frequently asked questions
- What is Peggy Chien's NPI number?
- Peggy Chien's National Provider Identifier (NPI) is 1861416489, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Peggy Chien's specialty?
- Peggy Chien is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Peggy Chien located?
- Peggy Chien's practice location on file with NPPES is 150 Lower Westfield Rd, Holyoke, MA 01040-2676.
- What is Peggy Chien's phone number?
- The practice phone number listed in the NPPES registry for Peggy Chien is (413) 536-2393.
- Does Peggy Chien accept Medicare?
- Peggy Chien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Peggy Chien's NPI active?
- Yes — Peggy Chien's NPI (1861416489) is active in the NPPES registry as of the last update on 2015-09-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.