What is Gregory Lum's NPI number?

Gregory Lum's National Provider Identifier (NPI) is 1770789844, 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 Dentist (Dental Providers).

Where is Gregory Lum located?

Gregory Lum's practice location on file with NPPES is 800 W Winton Ave, Hayward, CA 94545-1519.

What is Gregory Lum's phone number?

The practice phone number listed in the NPPES registry for Gregory Lum is (510) 782-2466.

Is Gregory Lum's NPI active?

Yes — Gregory Lum's NPI (1770789844) is active in the NPPES registry as of the last update on 2007-08-20.

IndividualActive

Gregory Lum, D.D.S.

NPI 1770789844 · Dentist · Hayward, CA

Gregory Lum, D.D.S. is a Dentist provider in Hayward, CA (NPI 1770789844).

Provider details

NPI number: 1770789844
Entity type: Individual
Primary specialty: DentistDental Providers
Credential: D.D.S.
Sex: Male
Sole proprietor: Yes
License: 23011 (CA)

Specialties & taxonomies

DentistPrimary122300000XLicense 23011 (CA)
Dental Providers

Profile Score

Detailed profile(89/100 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

800 W Winton Ave

Hayward, CA 94545-1519

Phone: (510) 782-2466

Street-level locationGet directions

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Mailing address