Daniel Gruzman, D.O.
Emergency Medicine Physician · Los Angeles, CA
Daniel Gruzman, D.O. is an emergency medicine physician with a practice address in Los Angeles, California, and NPI 1407233265, issued on Apr 30, 2015. Check the license (California 20A18341, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Daniel Gruzman
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 20A18341 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1225 Wilshire Blvd, Los Angeles, CA 90017
- Phone
- (213) 977-2121
- Enumerated
- Apr 30, 2015
- Record last updated
- Oct 5, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20221102000437); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 1225 Wilshire Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hanan Abdelfattah, PAPhysician Assistant1699230953
- Mari Abdulian, PA-CPhysician Assistant1629307947
- Nicholas Abraham, M.D.Emergency Medicine Physician1770984098
- Tiffany Abramson, MDEmergency Medicine Physician1154793586
- Nicole Adams, FNPFamily Nurse Practitioner1730889270
- Gabrielle Ahlzadeh, MDEmergency Medicine Physician1225427172
Verify Daniel Gruzman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A18341Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
52% more Medicare Part D claims than the average emergency medicine physician in 2024
344 Medicare Part D claims for 191 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 34 claims were for opioids.
Most prescribed
- Methocarbamol38 claims
- Ondansetron Odt35 claims
- Dicyclomine Hcl22 claims
- Hydrocodone-Acetaminophen16 claims
- Azithromycin14 claims
- Gabapentin12 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.
Bills Medicare through one group practice
- Century Integrated Partners, IncFort Worth, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Daniel Gruzman among 7,751 emergency medicine physician records in California
Daniel Gruzman, D.O. is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 72% of them.
- NPI issued2015 · 72% of these records are older, 25% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2015 · median 2011 among the 4,560 with a school on file
- Record last updated2020 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Los Angeles → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Elisa Aponte, M.D.Los Angeles, CA 900171518134634
- Won Ki Chae, MDLos Angeles, CA 900171376789701
- Pao Chiu, M.D.Los Angeles, CA 900171285686592
- Carl Chudnofsky, MDLos Angeles, CA 900171811958556
- Brian Harris, M.D.Los Angeles, CA 900171285687574
- John Hatherley, M.D.Los Angeles, CA 900171164476883
- Melvin Jackson, MDLos Angeles, CA 900171922049295
- Marynell Jelinek, M.D.Los Angeles, CA 900171487687828
Common questions
What is Daniel Gruzman, D.O.'s NPI number?
Daniel Gruzman, D.O.'s National Provider Identifier (NPI) is 1407233265, issued on Apr 30, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Daniel Gruzman, D.O. located?
The NPPES record lists a practice address at 1225 Wilshire Blvd, Los Angeles, CA, 90017. Phone: (213) 977-2121. Providers update this record themselves, so call before visiting.
How can I verify Daniel Gruzman, D.O.'s license?
NPPES lists California license number 20A18341, 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 Daniel Gruzman, D.O. prescribe under Medicare Part D?
In 2024, Daniel Gruzman, D.O. had 344 Medicare Part D claims for 191 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.