NPPES file of Aug 9, 2026

Ivy Marx, R.D.

Registered Dietitian · Los Angeles, CA

Ivy Marx, R.D. is a registered dietitian with a practice address in Los Angeles, California, and NPI 1588056774, issued on Feb 24, 2015. Check the license (California 714127, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1588056774
Name
Ivy Marx
Credential
R.D.
Primary taxonomy
Registered Dietitian 133V00000X
License number
714127 CA
Self-reported in NPPES; status is on the state search
Practice location
808 W 58TH St, Los Angeles, CA 90037
Phone
(323) 541-1600
Enumerated
Feb 24, 2015
Record last updated
Feb 24, 2015 (not updated in 11 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest registered dietitian records → All 7,148 in California → Look up another NPI →

Also registered at 808 W 58TH St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Drew Ales-Pichugin, NPNurse Practitioner1932957826
  2. Heather AlexanderCounselor1295434322
  3. Ashley AlvarezNurse Practitioner1558005116
  4. Justin Amador, FNPFamily Nurse Practitioner1760772321
  5. Ivan AndradeMarriage & Family Therapist1811586894
  6. Zoe ArmasFamily Nurse Practitioner1316459274

Verify Ivy Marx in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 714127    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Ivy Marx among 7,148 registered dietitian records in California

Ivy Marx, R.D. is one of 7,148 registered dietitian records with a practice address in California. 5% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2015, is newer than 35% of them.

  • NPI issued2015 · 35% of these records are older, 62% newer
  • In a Medicare fileNo · 5% of these records are
  • In the CMS Doctors and Clinicians fileNo · 7% of these records are
  • Record last updated2015 · 55% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 133V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Registered Dietitian providers in California

There are 7,148 registered dietitian records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 7,148 in California → Every provider in Los Angeles → Registered Dietitian nationwide →

The 8 registered dietitian records with the nearest ZIP codes

  1. Ana Duran, RDNLos Angeles, CA 900371255945507
  2. Katherine Grubiak, RDLos Angeles, CA 900371316153810
  3. Sydney Hongo, MPH, RDLos Angeles, CA 900371477394633
  4. Brenda Rodriguez, RDLos Angeles, CA 900371386112522
  5. Margaret Taylor, MS, RDLos Angeles, CA 900371376384487
  6. Vanesa Velazquez Orozco, RDLos Angeles, CA 900371205591559
  7. Tamara Abdul Hadi, MSLos Angeles, CA 900361669356754
  8. Amylee Amos, MS, RDNLos Angeles, CA 900361215478755

Common questions

What is Ivy Marx, R.D.'s NPI number?

Ivy Marx, R.D.'s National Provider Identifier (NPI) is 1588056774, issued on Feb 24, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Ivy Marx, R.D. located?

The NPPES record lists a practice address at 808 W 58TH St, Los Angeles, CA, 90037. Phone: (323) 541-1600. Providers update this record themselves, so call before visiting.

How can I verify Ivy Marx, R.D.'s license?

NPPES lists California license number 714127, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.