NPPES file of Aug 9, 2026

Aric Lee Gregson, MD

Infectious Disease Physician · Los Angeles, CA

Aric Lee Gregson, MD is an infectious disease physician with a practice address in Los Angeles, California, and NPI 1588683007, issued on Jul 18, 2006. Check the license (California A68156, 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
1588683007
Name
Aric Lee Gregson
Credential
MD
Primary taxonomy
Infectious Disease Physician 207RI0200X
License number
A68156 CA
Self-reported in NPPES; status is on the state search
Practice location
200 Medical Plaza, Los Angeles, CA 90095
Phone
(310) 825-7225
Enumerated
Jul 18, 2006
Record last updated
Jul 17, 2017 (not updated in 9 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20051122000891); accepts Medicare assignment
Medical or professional school
University Of California, Geffen School Of Medicine, 1997
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 Medical Plaza

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

  1. Anita Agzarian, MDInternal Medicine Physician1144254590
  2. Sheila Ahmadi, MDEndocrinology, Diabetes & Metabolism Physician1194800094
  3. Marine Altunyan, PHARMDAmbulatory Care Pharmacist1578300083
  4. Gayane Ambartsumyan, MDObstetrics & Gynecology Physician1174556849
  5. Parviz Amid, M.D.Surgery Physician1073633459
  6. Adrienne Bawa, REGISTERED NURSECase Management Registered Nurse1497355366

Verify Aric Lee Gregson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A68156
    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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90% fewer Medicare Part D claims than the average infectious disease physician in 2024

67 Medicare Part D claims for 17 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.

  1. Aric Gregson67
  2. Specialty average689

Most prescribed

  1. Biktarvy12 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.

Aric Lee Gregson among 1,119 infectious disease physician records in California

Aric Lee Gregson, MD is one of 1,119 infectious disease physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.

  • NPI issued2006 · 4% of these records are older, 54% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated1997 · median 2003 among the 735 with a school on file
  • Record last updated2017 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Infectious Disease Physician providers in California

There are 1,119 infectious disease physician records in California.

The 8 infectious disease physician records with the nearest ZIP codes

  1. Oladunni Adeyiga, MDLos Angeles, CA 900951801809751
  2. Timothy Brewer, MDLos Angeles, CA 900951174523245
  3. Judith Currier, MDLos Angeles, CA 900951508882614
  4. Milan Fiala, MDLos Angeles, CA 900951730270737
  5. Bernard Kubak, MDLos Angeles, CA 900951831118876
  6. Michael Lovett, MDLos Angeles, CA 900951053330902
  7. Glenn Mathisen, MDLos Angeles, CA 900951376564948
  8. Claire Panosian, MDLos Angeles, CA 900951114947892

Common questions

What is Aric Lee Gregson, MD's NPI number?

Aric Lee Gregson, MD's National Provider Identifier (NPI) is 1588683007, issued on Jul 18, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Aric Lee Gregson, MD located?

The NPPES record lists a practice address at 200 Medical Plaza, Los Angeles, CA, 90095. Phone: (310) 825-7225. Providers update this record themselves, so call before visiting.

How can I verify Aric Lee Gregson, MD's license?

NPPES lists California license number A68156, 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 Aric Lee Gregson, MD prescribe under Medicare Part D?

In 2024, Aric Lee Gregson, MD had 67 Medicare Part D claims for 17 beneficiaries; the average among infectious disease physician prescribers was 689. 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.