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KATHERINE LILJA
NPI 1477434611
Dietitian, Registered - Nutrition, Obesity and Weight Management in Fairfax, VA

Active since September 11, 2025Accepts Medicare Assignment
3580 JOSEPH SIEWICK DR STE 205, FAIRFAX, VA 22033(703) 620-3211 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Katherine Lilja NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

KATHERINE LILJA (NPI 1477434611) is an individual nutrition, obesity and weight management provider in Fairfax, Virginia and active in the NPI registry since September 2025. She is a graduate of Oakland College Of Medicine And Surgery (2022).

NPPES Registry Identity

NPI1477434611
Entity TypeIndividualFemale
Primary Taxonomy133VN1201X
Provider Legal NameKATHERINE LILJA
Location Address3580 JOSEPH SIEWICK DR STE 205Fairfax, VA 22033-1764
Mailing Address4351 Farm House LnFairfax, VA 22032-1616 · (763) 232-7110
Phone(703) 620-3211
Sole ProprietorYes
Medical School CMSOakland College Of Medicine And SurgeryGraduated 2022
Enumeration DateSeptember 11, 2025
NPPES CertifiedSeptember 11, 2025
✔ NPI 1477434611 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDietitian, Registered · Nutrition, Obesity and Weight ManagementDietary & Nutritional Service Providers
Taxonomy Code133VN1201X
Definition
An individual who is a Board Certified Specialist for Obesity and Weight Management and educates, supports, and advocates for patients and clients to understand and manage their weight and associated risks through the use of nutritional, behavioral health, medical, surgical, pharmacotherapeutic, and exercise and physical activity interventions.
3580 JOSEPH SIEWICK DR STE 205, Fairfax, VA 22033
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Katherine Lilja is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6608366620
PECOS Enrollment IDI20251107002441

Other Providers at the Same Location NPPES 12

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JENNI JEANETTE LORENE BARNHIZER RN, FNP
Nurse Practitioner (Family)
3580 JOSEPH SIEWICK DR STE 205
FAIRFAX, VA 22033
Fairfax County (703) 620-3211
HOLLY M BERNARD MD
Surgery
3580 JOSEPH SIEWICK DR STE 205
FAIRFAX, VA 22033
Fairfax County (703) 776-4651
MISS TANISHA NICOLE ROBINSON LCSW
Social Worker (Clinical)
3580 JOSEPH SIEWICK DR STE 205
FAIRFAX, VA 22033
Fairfax County (703) 620-3211
MARIA TADIC RD
Dietitian, Registered
3580 JOSEPH SIEWICK DR STE 205
FAIRFAX, VA 22033
Fairfax County (703) 620-3211
COURTNEY LEIGH CULBREATH MD
Surgery
3580 JOSEPH SIEWICK DR STE 205
FAIRFAX, VA 22033
Fairfax County (703) 620-3211
DR. RAJEV ISHWAR NAIN M.D.
Surgery
3580 JOSEPH SIEWICK DR STE 205
FAIRFAX, VA 22033
Fairfax County (703) 620-3211
PAMELA BRANDT DO
Internal Medicine
3580 JOSEPH SIEWICK DR STE 205
FAIRFAX, VA 22033
Fairfax County (703) 620-3211
JENNIFER B LOPEZ RD
Dietitian, Registered
3580 JOSEPH SIEWICK DR STE 205
FAIRFAX, VA 22033
Fairfax County (703) 620-3211

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Katherine Lilja's NPI number?

The NPI number for Katherine Lilja is 1477434611. It was assigned to this individual provider in the NPPES registry on September 11, 2025.

Where is Katherine Lilja located?

Katherine Lilja practices at 3580 Joseph Siewick Dr Ste 205, Fairfax, VA 22033. The listed phone number is (703) 620-3211.

What is Katherine Lilja's specialty?

The primary specialty registered for this NPI is Dietitian, Registered, specializing in Nutrition, Obesity and Weight Management, with taxonomy code 133VN1201X.

Is Katherine Lilja enrolled in Medicare?

Yes. Katherine Lilja is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Katherine Lilja was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.