Gregory James Ewertz, M.D.
Obstetrics & Gynecology Physician · Los Angeles, CA
Gregory James Ewertz, M.D. is an obstetrics & gynecology physician with a practice address in Los Angeles, California, and NPI 1841248143, issued on May 5, 2006. Check the license (California G38676, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gregory James Ewertz
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- G38676 CA
Self-reported in NPPES; status is on the state search - Practice location
- 8361 W 3RD St, Los Angeles, CA 90048
- Phone
- (310) 854-3400
- Enumerated
- May 5, 2006
- Record last updated
- Mar 31, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (310) 854-5732
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 8361 W 3RD St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Donna Gallik, MDClinical Cardiac Electrophysiology Physician1033100045
Verify Gregory James Ewertz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G38676Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
30 Medicare Part D claims, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Prednisone11 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.
Gregory James Ewertz among 5,088 obstetrics & gynecology physician records in California
Gregory James Ewertz, M.D. is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% 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, 52% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 53% of these records are
- Record last updated2021 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in California
There are 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Los Angeles → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Carolyn Alexander, M.D.Los Angeles, CA 900481073578332
- Paula Bernstein, MDWest Hollywood, CA 900481891788501
- Sushma Bhadauria, M.D.Los Angeles, CA 900481164472460
- Aminah Bliss, M.D.Los Angeles, CA 900481225087463
- Kimberly Gregory, M.D.Los Angeles, CA 900481033192356
- Paul Hackmeyer, M.D.Los Angeles, CA 900481023042363
- Bryna Harwood, MDWest Hollywood, CA 900481255304044
- Calvin Hobel, M.D.Los Angeles, CA 900481477536704
Common questions
What is Gregory James Ewertz, M.D.'s NPI number?
Gregory James Ewertz, M.D.'s National Provider Identifier (NPI) is 1841248143, issued on May 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory James Ewertz, M.D. located?
The NPPES record lists a practice address at 8361 W 3RD St, Los Angeles, CA, 90048. Phone: (310) 854-3400. Providers update this record themselves, so call before visiting.
How can I verify Gregory James Ewertz, M.D.'s license?
NPPES lists California license number G38676, 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 Gregory James Ewertz, M.D. prescribe under Medicare Part D?
In 2024, Gregory James Ewertz, M.D. had 30 Medicare Part D claims; the average among obstetrics & gynecology physician prescribers was 165. 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.