Jeffrey Chen, D.O.
Critical Care Medicine (Internal Medicine) Physician · Monterey Park, CA
Jeffrey Chen, D.O. is a critical care medicine (internal medicine) physician with a practice address in Monterey Park, California, and NPI 1801120191, issued on Sep 20, 2009. Check the license (California 20A10906, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jeffrey Chen
- Credential
- D.O.
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- 20A10906 CA
Self-reported in NPPES; status is on the state search - Practice location
- 500 N Garfield Ave, Monterey Park, CA 91754
- Phone
- (626) 280-4393
- Enumerated
- Sep 20, 2009
- Record last updated
- Apr 20, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20130304000164); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 723 in California → Look up another NPI →
Also registered at 500 N Garfield Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Charles Chan, M.D.Obstetrics & Gynecology Physician1326105743
- Dennis Chan, M. D.Gastroenterology Physician1053343434
- Suisun Chan, M.D.Gastroenterology Physician1801815527
- Tsang-Hung Chang, M.D.Obstetrics & Gynecology Physician1801857859
- Edward Chen, M.D.Obstetrics & Gynecology Physician1164463345
- Stephen Chen, MDCritical Care Medicine (Internal Medicine) Physician1205821477
Verify Jeffrey Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A10906Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6.9 times the Medicare Part D claims of the average critical care medicine (internal medicine) physician in 2024
4,807 Medicare Part D claims for 466 beneficiaries, against an average of 696 among the 2,873 providers of this specialty who prescribed in Part D. Brand-name drugs were 47% of claims.
Most prescribed
- Albuterol Sulfate Hfa1,115 claims
- Montelukast Sodium653 claims
- Trelegy Ellipta479 claims
- Omeprazole474 claims
- Fluticasone Propionate257 claims
- Ventolin Hfa214 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: $2,039.75
72 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. The 2,708 providers of this specialty with any payment received $2,958.68 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Prestige Pulmonary Consultants IncMonterey Park, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jeffrey Chen among 723 critical care medicine (internal medicine) physician records in California
Jeffrey Chen, D.O. is one of 723 critical care medicine (internal medicine) physician records with a practice address in California. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 59% of them.
- NPI issued2009 · 59% of these records are older, 36% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2008 · median 2005 among the 559 with a school on file
- Record last updated2020 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in California
There are 723 critical care medicine (internal medicine) physician records in California.
All 723 in California → Every provider in Monterey Park → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- William Chang, MDMonterey Park, CA 917541003236688
- Stephen Chen, MDMonterey Park, CA 917541205821477
- Than Kyaw, M.DMonterey Park, CA 917541659642767
- Jeng-Jong Liao, MDMonterey Park, CA 917541851442057
- Steve Tseng, D.O.Monterey Park, CA 917541316357841
- Owais Zaidi, MDPomona, CA 917671588825095
- Joseph Hourany, MDPomona, CA 917691720163728
- Bruce Corigliano, MDBaldwin Park, CA 917061285705251
Common questions
What is Jeffrey Chen, D.O.'s NPI number?
Jeffrey Chen, D.O.'s National Provider Identifier (NPI) is 1801120191, issued on Sep 20, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Jeffrey Chen, D.O. located?
The NPPES record lists a practice address at 500 N Garfield Ave, Monterey Park, CA, 91754. Phone: (626) 280-4393. Providers update this record themselves, so call before visiting.
How can I verify Jeffrey Chen, D.O.'s license?
NPPES lists California license number 20A10906, 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 Jeffrey Chen, D.O. prescribe under Medicare Part D?
In 2024, Jeffrey Chen, D.O. had 4,807 Medicare Part D claims for 466 beneficiaries; the average among critical care medicine (internal medicine) physician prescribers was 696. 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.