Stefan Irwin Zweig, D.D.S.
Endodontics · San Marino, CA
Stefan Irwin Zweig, D.D.S. is an endodontics with a practice address in San Marino, California, and NPI 1598985624, issued on Apr 30, 2007. Check the license (California 34453, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Stefan Irwin Zweig
- Credential
- D.D.S.
- Primary taxonomy
- Endodontics 1223E0200X
- License number
- 34453 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1344 Granada Ave, San Marino, CA 91108
- Phone
- (626) 799-4115
- Enumerated
- Apr 30, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (626) 799-3806
- Entity
- Type 1 · individual
8 nearest endodontics records → All 1,018 in California → Look up another NPI →
Verify Stefan Irwin Zweig in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 34453Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average endodontics in 2024
12 Medicare Part D claims, against an average of 121 among the 4,119 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.
Stefan Irwin Zweig among 1,018 endodontics records in California
Stefan Irwin Zweig, D.D.S. is one of 1,018 endodontics records with a practice address in California. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 27% of them.
- NPI issued2007 · 27% of these records are older, 42% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 78% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223E0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endodontics providers in California
There are 1,018 endodontics records in California.
All 1,018 in California → Every provider in San Marino → Endodontics nationwide →
The 8 endodontics records with the nearest ZIP codes
- Yoo Kyeom Huh, DMD, MSDPasadena, CA 911061609117043
- Joseph Kim, D.D.SPasadena, CA 911061326271297
- Younes Safa, DDSPasadena, CA 911061497802342
- J Jann, D.D.S.Pasadena, CA 911051700094208
- Andy Chang, DDSPasadena, CA 911011750710133
- Laurel Martinez, DMD, AMPasadena, CA 911011245901917
- Arnold Shibuya, D.D.S.Pasadena, CA 911011811076219
- Maxime Bachour, D.D.S.South Pasadena, CA 910301609321199
Common questions
What is Stefan Irwin Zweig, D.D.S.'s NPI number?
Stefan Irwin Zweig, D.D.S.'s National Provider Identifier (NPI) is 1598985624, issued on Apr 30, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Stefan Irwin Zweig, D.D.S. located?
The NPPES record lists a practice address at 1344 Granada Ave, San Marino, CA, 91108. Phone: (626) 799-4115. Providers update this record themselves, so call before visiting.
How can I verify Stefan Irwin Zweig, D.D.S.'s license?
NPPES lists California license number 34453, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Stefan Irwin Zweig, D.D.S. prescribe under Medicare Part D?
In 2024, Stefan Irwin Zweig, D.D.S. had 12 Medicare Part D claims; the average among endodontics prescribers was 121. 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.