Katherine Stiene, MD
Emergency Medicine Physician · Los Angeles, CA
Katherine Stiene, MD is an emergency medicine physician with a practice address in Los Angeles, California, and NPI 1992201420, issued on Apr 3, 2018. Check the license (California 165023, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Katherine Stiene
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 165023 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2051 Marengo St, Los Angeles, CA 90033
- Phone
- (323) 409-1000
- Enumerated
- Apr 3, 2018
- Record last updated
- Sep 9, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210714001467); accepts Medicare assignment
- Medical or professional school
- State University Of New York Downstate Medical Center, 2018
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 2051 Marengo St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nawal AbouzahrStudent in an Organized Health Care Education/Training Program1881054104
- Shelby AdlerPsychiatry Physician1407432263
- Shalleymar AgitoRegistered Respiratory Therapist1649850694
- Adolfo AguilarCritical Care Registered Respiratory Therapist1053836999
- Ashley Allen, MDEmergency Medicine Physician1053751875
Verify Katherine Stiene in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 165023Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% fewer Medicare Part D claims than the average emergency medicine physician in 2024
142 Medicare Part D claims for 108 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Cephalexin18 claims
- Amoxicillin-Clavulanate Potass16 claims
- Ondansetron Odt12 claims
- Azithromycin11 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- South Coast Emergency Medical Group IncSanta Barbara, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Stiene among 7,751 emergency medicine physician records in California
Katherine Stiene, 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 updated2019 · 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
- Deirdre Anglin, MDLos Angeles, CA 900331306932025
- Joseph BaltrushesLos Angeles, CA 900331629152178
- Aaron Bright, M.D.Los Angeles, CA 900331023054087
- Christopher Celentano, MDLos Angeles, CA 900331972516417
- Christine DinuzzoLos Angeles, CA 900331952456741
- Marc Eckstein, M.D.Los Angeles, CA 900331922010867
- Sean Henderson, M.D.Los Angeles, CA 900331205887064
- Helen Ho, MDLos Angeles, CA 900331447208962
Common questions
What is Katherine Stiene, MD's NPI number?
Katherine Stiene, MD's National Provider Identifier (NPI) is 1992201420, issued on Apr 3, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Stiene, MD located?
The NPPES record lists a practice address at 2051 Marengo St, Los Angeles, CA, 90033. Phone: (323) 409-1000. Providers update this record themselves, so call before visiting.
How can I verify Katherine Stiene, MD's license?
NPPES lists California license number 165023, 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 Katherine Stiene, MD prescribe under Medicare Part D?
In 2024, Katherine Stiene, MD had 142 Medicare Part D claims for 108 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Katherine Stiene, MD's MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.