Mari Stephanie Machi
Emergency Medicine Physician · Marina Del Rey, CA
Mari Stephanie Machi is an emergency medicine physician with a practice address in Marina Del Rey, California, and NPI 1730407438, issued on May 6, 2010. Check the license (California A119720, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mari Stephanie Machi
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A119720 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4560 Admiralty Way Ste 100, Marina Del Rey, CA 90292
- Phone
- (310) 827-3700
- Enumerated
- May 6, 2010
- Record last updated
- Jan 13, 2025
- Medicare enrollment
- Enrolled (PECOS I20140121000950); accepts Medicare assignment
- Medical or professional school
- University Of Pittsburgh School Of Medicine, 2010
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 4560 Admiralty Way Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shirin Aghazadeh, DOFamily Medicine Physician1457842866
- Salim Ahmed, M.D.Internal Medicine Physician1851772214
- Maria Arciniegas Calle, MDFamily Medicine Physician1740787829
- Ahmed AsharyFamily Medicine Physician1124641907
- Navpreet Badesha, MDFamily Medicine Physician1225698624
- Seth Brener, M.D.Emergency Medicine Physician1265606354
Verify Mari Stephanie Machi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A119720Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% fewer Medicare Part D claims than the average emergency medicine physician in 2024
162 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. 17 claims were for opioids.
Most prescribed
- Cephalexin23 claims
- Ondansetron Odt14 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): 87.7 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).
2 hospitals and group practices
- Cedars-Sinai Medical CenterWest Hollywood, CA · Acute Care Hospitals5 of 5 stars
- The Regents OF The University OF CaliforniaSanta Monica, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Mari Stephanie Machi among 7,751 emergency medicine physician records in California
Mari Stephanie Machi 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 2010, is newer than 58% of them.
- NPI issued2010 · 58% of these records are older, 40% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2010 · median 2011 among the 4,560 with a school on file
- Record last updated2025 · 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).
16 emergency medicine physician records list a practice address in Marina Del Rey
They are 16 of the 711 NPPES records with a practice address in Marina Del Rey, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Marina Del Rey → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Barry Borm, MDMarina Del Rey, CA 902921285736843
- Seth Brener, M.D.Marina Del Rey, CA 902921265606354
- Edward Chung, MDMarina Del Rey, CA 902921114954989
- Paula Gonella, MDMarina Del Rey, CA 902921508977141
- Richard Hoffner, MDMarina Del Rey, CA 902921811941701
- Robin Kaminsky, MDMarina Del Rey, CA 902921821038035
- Lisa Kellman, D.O.Marina Del Rey, CA 902921821164690
- Mickey Kolodny, MDMarina Del Rey, CA 902921750464707
Common questions
What is Mari Stephanie Machi's NPI number?
Mari Stephanie Machi's National Provider Identifier (NPI) is 1730407438, issued on May 6, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Mari Stephanie Machi located?
The NPPES record lists a practice address at 4560 Admiralty Way Ste 100, Marina Del Rey, CA, 90292. Phone: (310) 827-3700. Providers update this record themselves, so call before visiting.
How can I verify Mari Stephanie Machi's license?
NPPES lists California license number A119720, 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 Mari Stephanie Machi prescribe under Medicare Part D?
In 2024, Mari Stephanie Machi had 162 Medicare Part D claims for 108 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Mari Stephanie Machi's MIPS final score?
The 2023 MIPS final score is 87.7 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.