Nan Zhu Chapman, M.D.
Psychiatry Physician · Sylmar, CA
Nan Zhu Chapman, M.D. is a psychiatry physician with a practice address in Sylmar, California, and NPI 1811359862, issued on Mar 28, 2016. Check the license (California A151098, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nan Zhu Chapman
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A151098 CA
Self-reported in NPPES; status is on the state search - Practice location
- 14445 Olive View Dr, Sylmar, CA 91342
- Phone
- (747) 210-4343
- Enumerated
- Mar 28, 2016
- Record last updated
- Aug 28, 2023
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 14445 Olive View Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nasser Abdo, MDInternal Medicine Physician1306911649
- Gezman Abdullahi, M.D.Internal Medicine Physician1225394380
- Moyosore Abere, NPNurse Practitioner1225667314
- Ammini Abraham, MDAnesthesiology Physician1467531541
- Margarita Acosta, RN, AGACNPAcute Care Nurse Practitioner1609202415
- Fredric Adler, MDInternal Medicine Physician1356376735
Verify Nan Zhu Chapman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A151098Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average psychiatry physician in 2024
25 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Nan Zhu Chapman among 8,673 psychiatry physician records in California
Nan Zhu Chapman, M.D. is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 77% of them.
- NPI issued2016 · 77% of these records are older, 21% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2023 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
65 psychiatry physician records list a practice address in Sylmar
They are 65 of the 1,454 NPPES records with a practice address in Sylmar, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Sylmar → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Marjorie Adler, MDSylmar, CA 913421962550954
- Davin Agustines, DOSylmar, CA 913421336195890
- Jeffrey Cardenas, MDSylmar, CA 913421902985377
- Valery Chamberlin, M.D.Sylmar, CA 913421437101193
- Joseph Chien, D.O.Sylmar, CA 913421528267325
- Robert Dasher, MDSylmar, CA 913421427078682
- Stephen Erhart, MDSylmar, CA 913421912067471
- Latha Madhavan, M.D.Sylmar, CA 913421558490037
Common questions
What is Nan Zhu Chapman, M.D.'s NPI number?
Nan Zhu Chapman, M.D.'s National Provider Identifier (NPI) is 1811359862, issued on Mar 28, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Nan Zhu Chapman, M.D. located?
The NPPES record lists a practice address at 14445 Olive View Dr, Sylmar, CA, 91342. Phone: (747) 210-4343. Providers update this record themselves, so call before visiting.
How can I verify Nan Zhu Chapman, M.D.'s license?
NPPES lists California license number A151098, 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 Nan Zhu Chapman, M.D. prescribe under Medicare Part D?
In 2024, Nan Zhu Chapman, M.D. had 25 Medicare Part D claims; the average among psychiatry physician prescribers was 1,000. 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.