Justin A. Fu, MD a Medical Corporation
NPI 1770884389 · Sleep Medicine (Internal Medicine) Physician · Rancho Cucamonga, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Justin A. Fu, MD a Medical Corporation is a Sleep Medicine (Internal Medicine) Physician organization in Rancho Cucamonga, CA (NPI 1770884389).
Provider details
- NPI number
- 1770884389
- Entity type
- Organization
- Primary specialty
- Sleep Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Justin Fu, Ceo(909) 223-2113
- License
- A96100 (CA)
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
15 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
- 2010-11-12
- Last updated
- 2016-05-25
Frequently asked questions
- What is Justin A. Fu, MD a Medical Corporation's NPI number?
- Justin A. Fu, MD a Medical Corporation's National Provider Identifier (NPI) is 1770884389, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Justin A. Fu, MD a Medical Corporation?
- Justin A. Fu, MD a Medical Corporation is classified in the NPPES registry as Sleep Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Justin A. Fu, MD a Medical Corporation located?
- Justin A. Fu, MD a Medical Corporation's practice location on file with NPPES is 6627 Murrietta Ct, Rancho Cucamonga, CA 91739-9556.
- What is Justin A. Fu, MD a Medical Corporation's phone number?
- The practice phone number listed in the NPPES registry for Justin A. Fu, MD a Medical Corporation is (909) 223-2113.
- Does Justin A. Fu, MD a Medical Corporation accept Medicare?
- Justin A. Fu, MD a Medical Corporation is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Justin A. Fu, MD a Medical Corporation?
- The authorized official listed on Justin A. Fu, MD a Medical Corporation's NPPES record is Justin Fu, Ceo. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Justin A. Fu, MD a Medical Corporation's NPI active?
- Yes — Justin A. Fu, MD a Medical Corporation's NPI (1770884389) is active in the NPPES registry as of the last update on 2016-05-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.