Chang-Hwa Mary Chen, M.D.
Anesthesiology Physician · Duarte, CA
Chang-Hwa Mary Chen, M.D. is an anesthesiology physician with a practice address in Duarte, California, and NPI 1245287622, issued on May 30, 2006. Check the license (California A85504, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Chang-Hwa Mary Chen
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- A85504 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1500 Duarte RD, Duarte, CA 91010
- Phone
- (626) 256-4673
- Enumerated
- May 30, 2006
- Record last updated
- Sep 26, 2023
- Medicare enrollment
- Enrolled (PECOS I20071220000245); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →
Also registered at 1500 Duarte RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Chang-Hwa Mary Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A85504Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $52,281.04
37 payments; by number, the most common kind was travel and lodging; the largest payer was Delcath Systems. The 17,774 providers of this specialty with any payment received $669.59 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
- Bayside Anesthesia Medical GroupSanta Monica, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Chang-Hwa Mary Chen among 7,571 anesthesiology physician records in California
Chang-Hwa Mary Chen, M.D. is one of 7,571 anesthesiology physician records with a practice address in California. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 53% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2002 · median 2006 among the 4,868 with a school on file
- Record last updated2023 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
34 anesthesiology physician records list a practice address in Duarte
They are 34 of the 1,287 NPPES records with a practice address in Duarte, and 7,571 anesthesiology physician records in California.
All 7,571 in California → Every provider in Duarte → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Sarkis Baltayian, MDDuarte, CA 910101932165776
- Walter Chang, MDDuarte, CA 910101497851919
- Alan Dean, M.D.Duarte, CA 910101346240652
- Andres Falabella, MDDuarte, CA 910101538125364
- Jeff Ge, M.D.Duarte, CA 910101326084294
- Russell Gray, MDDuarte, CA 910101265499065
- Gary Hum, M.D.Duarte, CA 910101598771511
- Yung Ray Jow, M.D.Duarte, CA 910101548296320
Common questions
What is Chang-Hwa Mary Chen, M.D.'s NPI number?
Chang-Hwa Mary Chen, M.D.'s National Provider Identifier (NPI) is 1245287622, issued on May 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Chang-Hwa Mary Chen, M.D. located?
The NPPES record lists a practice address at 1500 Duarte RD, Duarte, CA, 91010. Phone: (626) 256-4673. Providers update this record themselves, so call before visiting.
How can I verify Chang-Hwa Mary Chen, M.D.'s license?
NPPES lists California license number A85504, 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.
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.