IndividualActive
William Chu, M.D.
NPI 1649286881 · Pediatrics Physician · Castle Rock, CO
William Chu, M.D. is a Pediatrics Physician provider in Castle Rock, CO (NPI 1649286881).
Provider details
- NPI number
- 1649286881
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 27839 (NE)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
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
1001 S Perry St
Suite 101b
Castle Rock, CO 80104-2668
Phone: (303) 688-2228
Street-level locationGet directions
Mailing address
755 Scott Cir
Jbphh, HI 96853-5399
Registry dates
- Enumerated
- 2006-07-31
- Last updated
- 2018-05-01
Frequently asked questions
- What is William Chu's NPI number?
- William Chu's National Provider Identifier (NPI) is 1649286881, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Chu's specialty?
- William Chu is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is William Chu located?
- William Chu's practice location on file with NPPES is 1001 S Perry St, Castle Rock, CO 80104-2668.
- What is William Chu's phone number?
- The practice phone number listed in the NPPES registry for William Chu is (303) 688-2228.
- Is William Chu's NPI active?
- Yes — William Chu's NPI (1649286881) is active in the NPPES registry as of the last update on 2018-05-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.