MARLENA TANNER, RDN, LLC
NPI 1942716626
Dietitian, Registered in Morro Bay, CA

Q: What is Marlena Tanner, Rdn, LLC's NPI number?

The NPI number for Marlena Tanner, Rdn, LLC is 1942716626. It was assigned to this organization in the NPPES registry on December 18, 2017. The provider is doing business as The Yellow House Project.

Q: What is Marlena Tanner, Rdn, LLC's specialty?

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

Active since December 18, 2017

2598 MAIN ST, MORRO BAY, CA 93442(805) 305-9911(833) 264-5898 Get Directions Write a Review

NPPES record last updated: May 23, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 23, 2025, Dec 18, 2017 (2 updates tracked since 2017).

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About Marlena Tanner, Rdn, Llc NPPES

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

MARLENA TANNER, RDN, LLC (NPI 1942716626), doing business as The Yellow House Project, is a healthcare organization registered as a dietitian, registered in Morro Bay, California and active in the NPI registry since December 2017. The organization maintains a secondary practice location in San Luis Obispo and lists Marlena Tanner, Owner, Manager, as its authorized official.

NPPES Registry Identity

NPI1942716626

Entity TypeOrganization

Primary Taxonomy133V00000X

Legal Business NameMARLENA TANNER, RDN, LLC

Location Address2598 MAIN STMorro Bay, CA 93442-1553

Mailing Address2598 Main StMorro Bay, CA 93442-1553 · (805) 591-0712 · Fax (833) 264-5898

Phone(805) 305-9911

Fax(833) 264-5898

Organization SubpartNo

Authorized OfficialMarlena TannerOwner, Manager · (805) 591-0712

Enumeration DateDecember 18, 2017

Last NPPES UpdateMay 23, 20252 updates tracked since enumeration

NPPES CertifiedMay 23, 2025

✔ NPI 1942716626 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 CA · 929304

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.

2598 MAIN ST, Morro Bay, CA 93442

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Other Names 1

Doing Business AsThe Yellow House Project

Secondary Practice Location 1

Location 1508 Higuera StSan Luis Obispo, CA 93401-3835 · Phone (805) 591-0712

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Marlena Tanner, Rdn, Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 4 clinicians reassign Medicare billing to Marlena Tanner, Rdn, LLC, which bills Medicare for the services they deliver. Of these, 1 practice at this address. They are listed nearest first.

Clinicians, nearest first (4)

Marlen Tanner, RD

Registered Dietitian or Nutrition Professional

NPI 1871828962

2598 MAIN ST
Morro Bay, CA 93442

(805) 591-0712

Same address

Justine Lowry, APCC, MS, BS

Mental Health Counselor

NPI 1003488651

277 SOUTH ST STE T
San Luis Obispo, CA 93401

(805) 781-4754

✔ PECOS✔ Accepts Medicare14 mi

Elizabeth Casparro

Registered Dietitian or Nutrition Professional

NPI 1174741730

2125 CENTERPOINTE PKWY SUITE 302
Santa Maria, CA 93455

(805) 346-8453

40 mi

Briana Loudermilk, RD

Registered Dietitian or Nutrition Professional

NPI 1134402480

1230 KAILUA RD
Kailua, HI 96734

(808) 343-1243

2,427 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Marlena Tanner, Rdn, LLC's NPI number?

The NPI number for Marlena Tanner, Rdn, LLC is 1942716626. It was assigned to this organization in the NPPES registry on December 18, 2017. The provider is doing business as The Yellow House Project.

Where is Marlena Tanner, Rdn, LLC located?

Marlena Tanner, Rdn, LLC is located at 2598 Main St, Morro Bay, CA 93442. The listed phone number is (805) 305-9911.

What is Marlena Tanner, Rdn, LLC's specialty?

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

Is Marlena Tanner, Rdn, LLC enrolled in Medicare?

Yes. Marlena Tanner, Rdn, LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Marlena Tanner, Rdn, LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 4 clinicians in 2 Medicare specialties reassign their Medicare billing to Marlena Tanner, Rdn, LLC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Registered Dietitian or Nutrition Professional (3) and Mental Health Counselor (1). Of these, 1 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Marlena Tanner, Rdn, LLC was last updated on May 23, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.