NPPES file of Aug 9, 2026

Arissa Caroline Eckhardt Young, M.D.

Rheumatology Physician · Los Angeles, CA

Arissa Caroline Eckhardt Young, M.D. is a rheumatology physician with a practice address in Los Angeles, California, and NPI 1659805893, issued on Apr 14, 2017. Check the license (California A174834, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1659805893
Name
Arissa Caroline Eckhardt Young
Credential
M.D.
Primary taxonomy
Rheumatology Physician 207RR0500X
License number
A174834 CA
Self-reported in NPPES; status is on the state search
Practice location
200 Ucla Medical Plz # 365B, Los Angeles, CA 90095
Phone
(310) 825-2448
Enumerated
Apr 14, 2017
Record last updated
Aug 1, 2025
Medicare enrollment
Enrolled (PECOS I20250620002151); accepts Medicare assignment
Medical or professional school
Tufts University School Of Medicine, 2017
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 200 Ucla Medical Plz # 365B

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

  1. Jesse RossPulmonary Disease Physician1881125318

Verify Arissa Caroline Eckhardt Young in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A174834
    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
Open the California license search

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96% fewer Medicare Part D claims than the average rheumatology physician in 2024

80 Medicare Part D claims for 16 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.

  1. Arissa Young80
  2. Specialty average1,978

Most prescribed

  1. Mycophenolate Mofetil28 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. The Regents OF The University OF CaliforniaLos Angeles, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Arissa Caroline Eckhardt Young among 926 rheumatology physician records in California

Arissa Caroline Eckhardt Young, M.D. is one of 926 rheumatology physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 88% of them.

  • NPI issued2017 · 88% of these records are older, 10% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 69% of these records are
  • Graduated2017 · median 2003 among the 641 with a school on file
  • Record last updated2025 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Rheumatology Physician providers in California

There are 926 rheumatology physician records in California.

The 8 rheumatology physician records with the nearest ZIP codes

  1. Ernest Brahn, MDLos Angeles, CA 900951528092079
  2. Ken Bulpitt, MDLos Angeles, CA 900951619902764
  3. Philip Clements, MDLos Angeles, CA 900951811913924
  4. Meika Fang, MDLos Angeles, CA 900951801821095
  5. John Fitzgerald, MDLos Angeles, CA 900951841215027
  6. Alan Gorn, MDLos Angeles, CA 900951952321176
  7. Jennifer Grossman, MDLos Angeles, CA 900951548289820
  8. Bevra Hahn, MDLos Angeles, CA 900951992723936

Common questions

What is Arissa Caroline Eckhardt Young, M.D.'s NPI number?

Arissa Caroline Eckhardt Young, M.D.'s National Provider Identifier (NPI) is 1659805893, issued on Apr 14, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Arissa Caroline Eckhardt Young, M.D. located?

The NPPES record lists a practice address at 200 Ucla Medical Plz # 365B, Los Angeles, CA, 90095. Phone: (310) 825-2448. Providers update this record themselves, so call before visiting.

How can I verify Arissa Caroline Eckhardt Young, M.D.'s license?

NPPES lists California license number A174834, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Arissa Caroline Eckhardt Young, M.D. prescribe under Medicare Part D?

In 2024, Arissa Caroline Eckhardt Young, M.D. had 80 Medicare Part D claims for 16 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions 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. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

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.