NPPES file of Aug 9, 2026

Melissa Wai-Mun Quan, DO

Neurology Physician · Los Angeles, CA

Melissa Wai-Mun Quan, DO is a neurology physician with a practice address in Los Angeles, California, and NPI 1033325816, issued on May 16, 2007. Check the license (California 20A15635, 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
1033325816
Name
Melissa Wai-Mun Quan
Credential
DO
Primary taxonomy
Neurology Physician 2084N0400X
License numbers
20A15635 CA
5101016917 MI
2010-00158 NC
Self-reported in NPPES; status is on the state search
Practice location
127 S San Vicente Blvd Ste A6600, Los Angeles, CA 90048
Phone
(310) 423-6472
Enumerated
May 16, 2007
Record last updated
Aug 8, 2024
Fax
(310) 423-0148
Medicare enrollment
Enrolled (PECOS I20171018002735); accepts Medicare assignment
Medical or professional school
Michigan State University College Of Osteopathic Medicine, 2006
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 127 S San Vicente Blvd Ste A6600

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

  1. Tariq Al-Saadi, MDNeurological Surgery Physician1922838671
  2. Hayley Arrowood, DONeurology Physician1114667185
  3. Paula Barreras Cortes, M.DNeurology Physician1609308519
  4. Suman Bharath, M.D.Neurology Physician1235664244
  5. Andrew Blumenfeld, M.D.Neurology Physician1164459913
  6. Yvette Bordelon, MDNeurology Physician1922023449

Verify Melissa Wai-Mun Quan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 20A15635
    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

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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15% fewer Medicare Part D claims than the average neurology physician in 2024

1,159 Medicare Part D claims for 344 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. 18 claims were for opioids.

  1. Melissa Quan1,159
  2. Specialty average1,370

Most prescribed

  1. Gabapentin176 claims
  2. Carbidopa-Levodopa111 claims
  3. Levetiracetam106 claims
  4. Duloxetine Hcl67 claims
  5. Levetiracetam Er45 claims
  6. Sumatriptan Succinate41 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.

Industry payments in 2024: $48.23

2 payments; by number, the most common kind was food and beverage; the largest payer was Abbott Laboratories. The 10,858 providers of this specialty with any payment received $8,318.07 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Melissa Quan$48.23
  2. Specialty average$8,318.07

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Southern California Permanente Medical GroupLos Angeles, CA

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

Melissa Wai-Mun Quan among 2,339 neurology physician records in California

Melissa Wai-Mun Quan, DO is one of 2,339 neurology 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 2007, is newer than 41% of them.

  • NPI issued2007 · 41% of these records are older, 48% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 70% of these records are
  • Graduated2006 · median 2006 among the 1,628 with a school on file
  • Record last updated2024 · 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 2084N0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Neurology Physician providers in California

There are 2,339 neurology physician records in California.

The 8 neurology physician records with the nearest ZIP codes

  1. Cameron Adams, M.D.West Hollywood, CA 900481346247392
  2. Karen Altman, MDWest Hollywood, CA 900481518912211
  3. Robert Baloh, MD PHDWest Hollywood, CA 900481164440699
  4. Andrew Blumenfeld, M.D.Los Angeles, CA 900481164459913
  5. Yvette Bordelon, MDLos Angeles, CA 900481922023449
  6. Maria Brickman, M.D.Los Angeles, CA 900481538107230
  7. Jeffrey Chung, MDWest Hollywood, CA 900481437106366
  8. Douglas Davies, M.D.Los Angeles, CA 900481326073222

Common questions

What is Melissa Wai-Mun Quan, DO's NPI number?

Melissa Wai-Mun Quan, DO's National Provider Identifier (NPI) is 1033325816, issued on May 16, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Melissa Wai-Mun Quan, DO located?

The NPPES record lists a practice address at 127 S San Vicente Blvd Ste A6600, Los Angeles, CA, 90048. Phone: (310) 423-6472. Providers update this record themselves, so call before visiting.

How can I verify Melissa Wai-Mun Quan, DO's license?

NPPES lists California license number 20A15635, 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 Melissa Wai-Mun Quan, DO prescribe under Medicare Part D?

In 2024, Melissa Wai-Mun Quan, DO had 1,159 Medicare Part D claims for 344 beneficiaries; the average among neurology physician prescribers was 1,370. 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.