NPPES file of Aug 9, 2026

Lauren Elizabeth Chalwell, M.D.

Emergency Medicine Physician · San Francisco, CA

Lauren Elizabeth Chalwell, M.D. is an emergency medicine physician with a practice address in San Francisco, California, and NPI 1023307576, issued on Apr 6, 2011. Check the license (California A123374, 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 2023 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1023307576
Name
Lauren Elizabeth Chalwell
Credential
M.D.
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
A123374 CA
Self-reported in NPPES; status is on the state search
Practice location
1001 Potrero Avenue Department OF Emergency Medicine, San Francisco, CA 94110
Phone
(415) 206-5753
Enumerated
Apr 6, 2011
Record last updated
Jul 13, 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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Verify Lauren Elizabeth Chalwell in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A123374
    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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The practice group's MIPS final score for 2023 (Medicare payment program): 91.9 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score83.5
  2. Costout of 100 · 30%68.0
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Lauren Elizabeth Chalwell among 7,751 emergency medicine physician records in California

Lauren Elizabeth Chalwell, M.D. is one of 7,751 emergency 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 2011, is newer than 60% of them.

  • NPI issued2011 · 60% of these records are older, 37% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileNo · 59% of these records are
  • Record last updated2015 · 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 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Emergency Medicine Physician providers in California

There are 7,751 emergency medicine physician records in California.

The 8 emergency medicine physician records with the nearest ZIP codes

  1. John Brown, MDSan Francisco, CA 941101053355941
  2. Ritik Chandra, MDSan Francisco, CA 941101700838737
  3. Rachel Chin, MDSan Francisco, CA 941101477597375
  4. Christopher Colwell, MDSan Francisco, CA 941101629092788
  5. Alan Gelb, MDSan Francisco, CA 941101497796213
  6. Eric Isaacs, MDSan Francisco, CA 941101356385231
  7. Todd Kessinger, MDSan Francisco, CA 941101255374732
  8. Judith Klein, MDSan Francisco, CA 941101235171638

Common questions

What is Lauren Elizabeth Chalwell, M.D.'s NPI number?

Lauren Elizabeth Chalwell, M.D.'s National Provider Identifier (NPI) is 1023307576, issued on Apr 6, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Lauren Elizabeth Chalwell, M.D. located?

The NPPES record lists a practice address at 1001 Potrero Avenue Department OF Emergency Medicine, San Francisco, CA, 94110. Phone: (415) 206-5753. Providers update this record themselves, so call before visiting.

How can I verify Lauren Elizabeth Chalwell, M.D.'s license?

NPPES lists California license number A123374, 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.

What is Lauren Elizabeth Chalwell, M.D.'s MIPS final score?

The 2023 MIPS final score is 91.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.