Gregory Yu, M.D.
NPI 1598944613 · Internal Medicine Physician · La Canada Flintridge, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Yu, M.D. is a Internal Medicine Physician provider in La Canada Flintridge, CA (NPI 1598944613).
Provider details
- NPI number
- 1598944613
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G060843 (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
18 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
- 2007-10-25
- Last updated
- 2016-02-08
Frequently asked questions
- What is Gregory Yu's NPI number?
- Gregory Yu's National Provider Identifier (NPI) is 1598944613, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Yu's specialty?
- Gregory Yu is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Yu located?
- Gregory Yu's practice location on file with NPPES is 2258 Foothill Blvd, La Canada Flintridge, CA 91011-1457.
- What is Gregory Yu's phone number?
- The practice phone number listed in the NPPES registry for Gregory Yu is (818) 248-8998.
- Does Gregory Yu accept Medicare?
- Gregory Yu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Yu's NPI active?
- Yes — Gregory Yu's NPI (1598944613) is active in the NPPES registry as of the last update on 2016-02-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.