Linda Lam, M.D.
NPI 1639180086 · Internal Medicine Physician · Fullerton, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Linda Lam, M.D. is a Internal Medicine Physician provider in Fullerton, CA (NPI 1639180086).
Provider details
- NPI number
- 1639180086
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A87699 (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)
- 2220 Clark AveLong Beach, CA 90815-2521Phone: (562) 597-4181Fax: (562) 597-7083
Registry dates
- Enumerated
- 2006-08-11
- Last updated
- 2020-10-21
- Certified
- 2020-10-21
Frequently asked questions
- What is Linda Lam's NPI number?
- Linda Lam's National Provider Identifier (NPI) is 1639180086, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Linda Lam's specialty?
- Linda Lam is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Linda Lam located?
- Linda Lam's practice location on file with NPPES is 101 E Valencia Mesa Dr, Fullerton, CA 92835.
- What is Linda Lam's phone number?
- The practice phone number listed in the NPPES registry for Linda Lam is (714) 871-3280.
- Does Linda Lam accept Medicare?
- Linda Lam is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Linda Lam's NPI active?
- Yes — Linda Lam's NPI (1639180086) is active in the NPPES registry as of the last update on 2020-10-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.