Daniel Jacob Klein, MD
Emergency Medicine Physician · Los Angeles, CA
Daniel Jacob Klein, MD is an emergency medicine physician with a practice address in Los Angeles, California, and NPI 1396249322, issued on Mar 23, 2018. Check the license (California A164486, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Daniel Jacob Klein
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A164486 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
- Mar 23, 2018
- Record last updated
- Jul 5, 2022
- Medicare enrollment
- Enrolled (PECOS I20210325001011); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 2018
- 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 Jacob Klein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A164486Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12% fewer Medicare Part D claims than the average emergency medicine physician in 2024
200 Medicare Part D claims for 159 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 15 claims were for opioids.
Most prescribed
- Sulfamethoxazole-Trimethoprim18 claims
- Cephalexin12 claims
- Ibuprofen11 claims
- Oxycodone Hcl11 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
- Usc Care Medical Group IncLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Daniel Jacob Klein among 7,751 emergency medicine physician records in California
Daniel Jacob Klein, MD 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 2018, is newer than 81% of them.
- NPI issued2018 · 81% of these records are older, 15% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2018 · median 2011 among the 4,560 with a school on file
- Record last updated2022 · 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 Jacob Klein, MD's NPI number?
Daniel Jacob Klein, MD's National Provider Identifier (NPI) is 1396249322, issued on Mar 23, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Daniel Jacob Klein, MD 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 Jacob Klein, MD's license?
NPPES lists California license number A164486, 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 Jacob Klein, MD prescribe under Medicare Part D?
In 2024, Daniel Jacob Klein, MD had 200 Medicare Part D claims for 159 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.