Tsung Chang Chen, M.D.
Pulmonary Disease Physician · Cupertino, CA
Tsung Chang Chen, M.D. is a pulmonary disease physician with a practice address in Cupertino, California, and NPI 1669546651, issued on Nov 20, 2006. Check the license (California A45142, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tsung Chang Chen
- Credential
- M.D.
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License number
- A45142 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10430 S DE Anza Blvd, Cupertino, CA 95014
- Phone
- (408) 257-8860
- Enumerated
- Nov 20, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (408) 519-6556
- Medicaid ID
- 00A451420 CA
- Medicare enrollment
- Enrolled (PECOS I20110513000285); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical Branch At Galveston, 1987
- Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 1,443 in California → Look up another NPI →
Also registered at 10430 S DE Anza Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tiffany Chang, ODOptometrist1336176080
- Dennis Chen, D.D.S.Periodontics1871627943
- Jeffrey Ching, D.D.S.General Practice Dentistry1144318239
- Show Chu, D.D.S.Dentist1881863249
- Leon Davis, D.D.SGeneral Practice Dentistry1083718431
- Andrea Hirsch, PH.D.Clinical Psychologist1982748372
Verify Tsung Chang Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A45142Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.0 times the Medicare Part D claims of the average pulmonary disease physician in 2024
4,255 Medicare Part D claims for 281 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. 43 claims were for opioids.
Most prescribed
- Levothyroxine Sodium329 claims
- Amlodipine Besylate259 claims
- Atorvastatin Calcium253 claims
- Metformin Hcl164 claims
- Metoprolol Succinate126 claims
- Ipratropium-Albuterol105 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: $1,272.94
33 payments; by number, the most common kind was food and beverage; the largest payer was Teva Pharmaceuticals USA, Inc. The 8,806 providers of this specialty with any payment received $5,159.88 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.
Tsung Chang Chen among 1,443 pulmonary disease physician records in California
Tsung Chang Chen, M.D. is one of 1,443 pulmonary disease physician records with a practice address in California. 84% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 51% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1987 · median 2002 among the 1,061 with a school on file
- Record last updated2007 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pulmonary Disease Physician providers in California
There are 1,443 pulmonary disease physician records in California.
All 1,443 in California → Every provider in Cupertino → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- Melissa Lopez-Bermejo, MDFreedom, CA 950191548360084
- George Green, M.DGilroy, CA 950201811074875
- Daniel Kanada, M.D.Monte Sereno, CA 950301336175991
- Ina Bendis, M.D.Santa Clara, CA 950511336274091
- Kyle FaheySanta Clara, CA 950511427413699
- Irina Khachatryan, MDSanta Clara, CA 950511235557075
- Don HodgesSanta Cruz, CA 950621437139284
- Eunice Kim, M.D.Santa Cruz, CA 950621609973734
Common questions
What is Tsung Chang Chen, M.D.'s NPI number?
Tsung Chang Chen, M.D.'s National Provider Identifier (NPI) is 1669546651, issued on Nov 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Tsung Chang Chen, M.D. located?
The NPPES record lists a practice address at 10430 S DE Anza Blvd, Cupertino, CA, 95014. Phone: (408) 257-8860. Providers update this record themselves, so call before visiting.
How can I verify Tsung Chang Chen, M.D.'s license?
NPPES lists California license number A45142, 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 Tsung Chang Chen, M.D. prescribe under Medicare Part D?
In 2024, Tsung Chang Chen, M.D. had 4,255 Medicare Part D claims for 281 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. 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.