NPPES file of Aug 9, 2026

Michael Lum, D.O.

Family Medicine Physician · Torrance, CA

Michael Lum, D.O. is a family medicine physician with a practice address in Torrance, California, and NPI 1154535722, issued on May 10, 2007. Check the license (California 20A8557, 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
1154535722
Name
Michael Lum
Credential
D.O.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
20A8557 CA
Self-reported in NPPES; status is on the state search
Practice location
23639 Hawthorne Blvd, Torrance, CA 90505
Phone
(310) 375-9595
Enumerated
May 10, 2007
Record last updated
Jan 12, 2010 (not updated in 16 years: call before relying on the address or phone)
Fax
(310) 375-2138
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 family medicine physician records → All 17,133 in California → Look up another NPI →

Also registered at 23639 Hawthorne Blvd

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

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  4. Wasima Masoodi, MDEndocrinology, Diabetes & Metabolism Physician1275563017
  5. Azhar Muttalib, M.D.Internal Medicine Physician1124054721
  6. Marianne O'Brien, MA SLPSpeech-Language Pathologist1083071633

Verify Michael Lum in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 20A8557    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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Industry payments in 2024: $223.13

12 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Michael Lum$223.13
  2. Specialty average$902.55

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

Michael Lum among 17,133 family medicine physician records in California

Michael Lum, D.O. is one of 17,133 family medicine 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, 47% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileNo · 62% of these records are
  • Record last updated2010 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

114 family medicine physician records list a practice address in Torrance

They are 114 of the 8,901 NPPES records with a practice address in Torrance, and 17,133 family medicine physician records in California.

All 17,133 in California → Every provider in Torrance → Family Medicine Physician nationwide →

The 8 family medicine physician records with the nearest ZIP codes

  1. Anthony Chen, MDTorrance, CA 905051669430187
  2. Keith Chumley, M.D.Torrance, CA 905051932126653
  3. Evelyn Dowell, MDTorrance, CA 905051629054929
  4. Consuelo Franco, MDTorrance, CA 905051013997501
  5. Robert Glazer, MDTorrance, CA 905051528044815
  6. Nancy Griffith, MDTorrance, CA 905051982655825
  7. George Haas, MDTorrance, CA 905051508842501
  8. Thomas LagreliusTorrance, CA 905051386690915

Common questions

What is Michael Lum, D.O.'s NPI number?

Michael Lum, D.O.'s National Provider Identifier (NPI) is 1154535722, issued on May 10, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Michael Lum, D.O. located?

The NPPES record lists a practice address at 23639 Hawthorne Blvd, Torrance, CA, 90505. Phone: (310) 375-9595. Providers update this record themselves, so call before visiting.

How can I verify Michael Lum, D.O.'s license?

NPPES lists California license number 20A8557, 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.

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.

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.