Katarina Lum, FNP
NPI 1538747654 · Family Nurse Practitioner · Fremont, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katarina Lum, FNP is a Family Nurse Practitioner provider in Fremont, CA (NPI 1538747654).
Provider details
- NPI number
- 1538747654
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 95017029 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
5 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$55 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 701 E 28th St Ste 116Long Beach, CA 90806-2771Phone: (562) 490-9900
Registry dates
- Enumerated
- 2021-03-30
- Last updated
- 2025-12-22
- Certified
- 2025-12-22
Frequently asked questions
- What is Katarina Lum's NPI number?
- Katarina Lum's National Provider Identifier (NPI) is 1538747654, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katarina Lum's specialty?
- Katarina Lum is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Katarina Lum located?
- Katarina Lum's practice location on file with NPPES is 2191 Mowry Ave Ste 600b, Fremont, CA 94538-1702.
- What is Katarina Lum's phone number?
- The practice phone number listed in the NPPES registry for Katarina Lum is (562) 490-9900.
- Does Katarina Lum accept Medicare?
- Katarina Lum is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katarina Lum's NPI active?
- Yes — Katarina Lum's NPI (1538747654) is active in the NPPES registry as of the last update on 2025-12-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.