NPPES file of Aug 9, 2026

Joshua Andrew Lee, M.D.

Emergency Medicine Physician · Walnut Creek, CA

Joshua Andrew Lee, M.D. is an emergency medicine physician with a practice address in Walnut Creek, California, and NPI 1912438664, issued on Mar 24, 2017. Check the license (California A157703, 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
1912438664
Name
Joshua Andrew Lee
Credential
M.D.
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
A157703 CA
Self-reported in NPPES; status is on the state search
Practice location
1425 S Main St, Walnut Creek, CA 94596
Phone
(925) 295-4000
Enumerated
Mar 24, 2017
Record last updated
Jul 16, 2022
Medicare enrollment
Enrolled (PECOS I20210226002011); accepts Medicare assignment
Medical or professional school
University Of Southern California Keck School Of Medicine, 2017
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 1425 S Main St

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

  1. Eric AaserudeEmergency Medicine Physician1811491194
  2. Derek Abbassi, MDObstetrics & Gynecology Physician1841364155
  3. Peter Ackerman, MDEmergency Medicine Physician1427435023
  4. Aaron Mark Acosta, DOEmergency Medicine Physician1538789987
  5. Basil Adad, MDOtolaryngology Physician1487732574
  6. Derek Ailes, M.D.Emergency Medical Services (Emergency Medicine) Physician1992001804

Verify Joshua Andrew Lee in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A157703
    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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6% more Medicare Part D claims than the average emergency medicine physician in 2024

240 Medicare Part D claims for 170 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 26 claims were for opioids.

  1. Joshua Lee240
  2. Specialty average226

Most prescribed

  1. Cefadroxil19 claims
  2. Doxycycline Monohydrate18 claims
  3. Amoxicillin-Clavulanate Potass17 claims
  4. Ondansetron Odt13 claims
  5. Oxycodone Hcl13 claims
  6. Prednisone13 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: $44.93

2 payments; by number, the most common kind was food and beverage; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. The 12,335 providers of this specialty with any payment received $953.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Joshua Lee$44.93
  2. Specialty average$953.79

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. Permanente Medical Group IncWalnut Creek, CA

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

Joshua Andrew Lee among 7,751 emergency medicine physician records in California

Joshua Andrew Lee, 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 2017, is newer than 78% of them.

  • NPI issued2017 · 78% of these records are older, 19% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated2017 · median 2011 among the 4,560 with a school on file
  • Record last updated2022 · 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).

95 emergency medicine physician records list a practice address in Walnut Creek

They are 95 of the 6,170 NPPES records with a practice address in Walnut Creek, and 7,751 emergency medicine physician records in California.

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Peter Barnett, M.D.Walnut Creek, CA 945961699882589
  2. Brian Baskin, MDWalnut Creek, CA 945961770554693
  3. Peter Benson, M.D.Walnut Creek, CA 945961487680393
  4. Scott Chamberlain, M.D.Walnut Creek, CA 945961356395453
  5. Charles Hansen, MDWalnut Creek, CA 945961891873956
  6. Christopher Jaksa, MDWalnut Creek, CA 945961619055779
  7. Conrad Lai, M.DWalnut Creek, CA 945961942248141
  8. Hannon Patel, MDWalnut Creek, CA 945961336227495

Common questions

What is Joshua Andrew Lee, M.D.'s NPI number?

Joshua Andrew Lee, M.D.'s National Provider Identifier (NPI) is 1912438664, issued on Mar 24, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Joshua Andrew Lee, M.D. located?

The NPPES record lists a practice address at 1425 S Main St, Walnut Creek, CA, 94596. Phone: (925) 295-4000. Providers update this record themselves, so call before visiting.

How can I verify Joshua Andrew Lee, M.D.'s license?

NPPES lists California license number A157703, 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 Joshua Andrew Lee, M.D. prescribe under Medicare Part D?

In 2024, Joshua Andrew Lee, M.D. had 240 Medicare Part D claims for 170 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.