Gregory Lum, M.D.
NPI 1366554537 · Pediatrics Physician · Los Gatos, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Lum, M.D. is a Pediatrics Physician provider in Los Gatos, CA (NPI 1366554537).
Provider details
- NPI number
- 1366554537
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G 78511 (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
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 725 Welch RdPalo Alto, CA 94304-1601Phone: (650) 497-8000
Registry dates
- Enumerated
- 2006-08-31
- Last updated
- 2023-01-06
- Certified
- 2023-01-06
Frequently asked questions
- What is Gregory Lum's NPI number?
- Gregory Lum's National Provider Identifier (NPI) is 1366554537, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Lum's specialty?
- Gregory Lum is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Lum located?
- Gregory Lum's practice location on file with NPPES is 15000 Los Gatos Blvd Ste 3, Los Gatos, CA 95032-2017.
- What is Gregory Lum's phone number?
- The practice phone number listed in the NPPES registry for Gregory Lum is (408) 370-2324.
- Does Gregory Lum accept Medicare?
- Gregory Lum is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Lum's NPI active?
- Yes — Gregory Lum's NPI (1366554537) is active in the NPPES registry as of the last update on 2023-01-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.