Naihsien David Chen, M.D.
Internal Medicine Physician · Modesto, CA
Naihsien David Chen, M.D. is an internal medicine physician with a practice address in Modesto, California, and NPI 1174699755, issued on Nov 27, 2006. Check the license (California A73562, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Naihsien David Chen
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A73562 CA
Self-reported in NPPES; status is on the state search - Practice location
- 803 Coffee RD Ste 6, Modesto, CA 95355
- Phone
- (626) 888-6000
- Enumerated
- Nov 27, 2006
- Record last updated
- Jan 14, 2026
- Fax
- (888) 318-6618
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 803 Coffee RD Ste 6
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Naihsien David Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A73562Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average internal medicine physician in 2024
366 Medicare Part D claims for 39 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 12 claims were for opioids.
Most prescribed
- Atorvastatin Calcium32 claims
- Losartan Potassium19 claims
- Amlodipine Besylate18 claims
- Lisinopril14 claims
- Hydrochlorothiazide13 claims
- Tamsulosin Hcl11 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.
Naihsien David Chen among 17,696 internal medicine physician records in California
Naihsien David Chen, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% 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, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2026 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
129 internal medicine physician records list a practice address in Modesto
They are 129 of the 9,262 NPPES records with a practice address in Modesto, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Modesto → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Edward Auen, PH.D., M.D.Modesto, CA 953551962464602
- Veronica David, MDModesto, CA 953551427014877
- Gervacio Diaz, M.D.Modesto, CA 953551700835451
- Neal Dunitz, M.D.Modesto, CA 953551245215870
- Maria Go, MDModesto, CA 953551922095132
- Richard Holihan, MDModesto, CA 953551730146184
- Kenneth Hua, MDModesto, CA 953551609824382
- Youhana Jacobs, MDModesto, CA 953551396793717
Common questions
What is Naihsien David Chen, M.D.'s NPI number?
Naihsien David Chen, M.D.'s National Provider Identifier (NPI) is 1174699755, issued on Nov 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Naihsien David Chen, M.D. located?
The NPPES record lists a practice address at 803 Coffee RD Ste 6, Modesto, CA, 95355. Phone: (626) 888-6000. Providers update this record themselves, so call before visiting.
How can I verify Naihsien David Chen, M.D.'s license?
NPPES lists California license number A73562, 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 Naihsien David Chen, M.D. prescribe under Medicare Part D?
In 2024, Naihsien David Chen, M.D. had 366 Medicare Part D claims for 39 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.