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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

LEXIE ISAACS LEIGHTNER RD, LD
NPI 1437539822
Dietitian, Registered in Encinitas, CA

Active since June 01, 2015
914 N COAST HIGHWAY 101 STE A, ENCINITAS, CA 92024(202) 932-9958 Get Directions Write a Review

NPPES record last updated: September 15, 2026. Verified against the NPPES registry weekly; last sync: September 20, 2026.

Record update history: Sep 15, 2026, Dec 9, 2024 (2 updates tracked since 2024).

About Lexie Isaacs Leightner Rd, Ld NPPES

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

LEXIE ISAACS LEIGHTNER RD, LD (NPI 1437539822) is an individual dietitian, registered in Encinitas, California, licensed in Indiana (37003689A) and active in the NPI registry since June 2015. She maintains 5 additional practice locations.

NPPES Registry Identity

NPI1437539822
Entity TypeIndividualFemale
Primary Taxonomy133V00000X
Provider Legal NameLEXIE ISAACS LEIGHTNERCredential: RD, LD
Location Address914 N COAST HIGHWAY 101 STE AEncinitas, CA 92024-2074
Mailing Address4465 N Meridian StIndianapolis, IN 46208-3533 · (317) 903-4866
Phone(202) 932-9958
Sole ProprietorYes
Enumeration DateJune 1, 2015
Last NPPES UpdateSeptember 15, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 15, 2026
✔ NPI 1437539822 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDietitian, RegisteredDietary & Nutritional Service Providers
Taxonomy Code133V00000X
License✔ Licensed in IN · 37003689A
Definition
A Registered Dietitian (RD)/Registered Dietitian Nutritionist (RDN) is an individual uniquely trained in the science of nutrition and practice of dietetics to design and provide medical nutrition therapy (MNT) and other evidence-based applications of the Nutrition Care Process (NCP) that exemplify the profession's systematic approach to providing high quality nutrition care. Registered dietitians provide MNT for the purpose of disease prevention or management, or to treat or rehabilitate an illness, injury, or condition, with the use of specific, indicated physical and cognitive nutrition care services comprised of one or more of the following aspects of the NCP: nutrition assessment/reassessment, nutrition diagnosis, nutrition intervention (e.g., nutrition counseling, therapeutic diet ordering, and nutrition education) and nutrition monitoring and evaluation.
914 N COAST HIGHWAY 101 STE A, Encinitas, CA 92024
Open in Google Maps ↗

Other Names 1

Former Name (1)Alexandra Isaacs

Secondary Practice Locations 5

Location 1584 Castro St # 2095San Francisco, CA 94114-2512 · Phone (844) 359-8363 · Fax (833) 955-3592
Location 23065 Brighton 2nd St # 1014Brooklyn, NY 11235-7404 · Phone (844) 359-8363 · Fax (833) 955-3592
Location 31001 Fischer Blvd Ste 3Toms River, NJ 08753-3818 · Phone (844) 359-8363 · Fax (833) 929-3520
Location 41800 Phoenix BlvdAtlanta, GA 30349-5593 · Phone (844) 359-8363 · Fax (833) 929-3520
Location 51204 Main St Ste 576Branford, CT 06405-3787 · Phone (844) 359-8363 · Fax (833) 929-3520

Other Providers at the Same Location NPPES 3

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

9AMHEALTH MEDICAL GROUP OF KANSAS, P.A.
Internal Medicine
914 N COAST HIGHWAY 101 STE A
ENCINITAS, CA 92024
San Diego County (202) 932-9958
9AMHEALTH MEDICAL GROUP OF NEW JERSEY, P.C.
Internal Medicine
914 N COAST HIGHWAY 101 STE A
ENCINITAS, CA 92024
San Diego County (202) 932-9958
ALEXANDRA EISELE RD
Dietitian, Registered
914 N COAST HIGHWAY 101 STE A
ENCINITAS, CA 92024
San Diego County (202) 932-9958

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 Lexie Leightner's NPI number?

The NPI number for Lexie Leightner is 1437539822. It was assigned to this individual provider in the NPPES registry on June 1, 2015. The provider is also known as Alexandra Isaacs.

Where is Lexie Leightner located?

Lexie Leightner practices at 914 N Coast Highway 101 Ste A, Encinitas, CA 92024. The listed phone number is (202) 932-9958.

What is Lexie Leightner's specialty?

The primary specialty registered for this NPI is Dietitian, Registered with taxonomy code 133V00000X.

When was this NPI record last updated?

The NPPES record for Lexie Leightner was last updated on September 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 days 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.