John D. Zipperer, MD
Internal Medicine Physician · Los Angeles, CA
John D. Zipperer, MD is an internal medicine physician with a practice address in Los Angeles, California, and NPI 1649212770, issued on Jun 12, 2006. Check the license (California C145502, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John D. Zipperer
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- C145502 CA
6922 AK
Self-reported in NPPES; status is on the state search - Practice location
- 520 S Sepulveda Blvd Ste 402, Los Angeles, CA 90049
- Phone
- (424) 330-2838
- Enumerated
- Jun 12, 2006
- Record last updated
- Apr 17, 2023
- Fax
- (424) 330-2838
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify John D. Zipperer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C145502Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average internal medicine physician in 2024
510 Medicare Part D claims for 19 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 211 claims were for opioids.
Most prescribed
- Oxycodone Hcl80 claims
- Fentanyl50 claims
- Gabapentin48 claims
- Tizanidine Hcl40 claims
- Nortriptyline Hcl33 claims
- Methadone Hcl29 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.
John D. Zipperer among 17,696 internal medicine physician records in California
John D. Zipperer, MD 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 updated2023 · 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).
1,423 internal medicine physician records list a practice address in Los Angeles
They are 1,423 of the 69,537 NPPES records with a practice address in Los Angeles, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Los Angeles → Internal Medicine Physician nationwide →
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Common questions
What is John D. Zipperer, MD's NPI number?
John D. Zipperer, MD's National Provider Identifier (NPI) is 1649212770, issued on Jun 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John D. Zipperer, MD located?
The NPPES record lists a practice address at 520 S Sepulveda Blvd Ste 402, Los Angeles, CA, 90049. Phone: (424) 330-2838. Providers update this record themselves, so call before visiting.
How can I verify John D. Zipperer, MD's license?
NPPES lists California license number C145502, 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 John D. Zipperer, MD prescribe under Medicare Part D?
In 2024, John D. Zipperer, MD had 510 Medicare Part D claims for 19 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.