Yonathan Ararso, MD,MS
Emergency Medicine Physician · San Francisco, CA
Yonathan Ararso, MD,MS is an emergency medicine physician with a practice address in San Francisco, California, and NPI 1558941427, issued on Apr 13, 2021. Check the license (California A194602, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Yonathan Ararso
- Credential
- MD,MS
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A194602 CA
Self-reported in NPPES; status is on the state search - Practice location
- 505 Parnassus Ave RM M24, San Francisco, CA 94143
- Phone
- (415) 353-1529
- Enumerated
- Apr 13, 2021
- Record last updated
- Mar 4, 2025
- Medicare enrollment
- Enrolled (PECOS I20250310001413); 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 505 Parnassus Ave RM M24
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kaitlin DewildeStudent in an Organized Health Care Education/Training Program1720664139
- Kalie Dove-Maguire, MDEmergency Medicine Physician1912273707
Verify Yonathan Ararso in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A194602Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through 2 group practices
- Cep America - CaliforniaConcord, CA
- Pacific Redwood Medical Group IncUkiah, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Yonathan Ararso among 7,751 emergency medicine physician records in California
Yonathan Ararso, MD,MS 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 2021, is newer than 92% of them.
- NPI issued2021 · 92% of these records are older, 5% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2021 · 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).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in San Francisco → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Michael Burg, MDSan Francisco, CA 941431497713150
- Laura Catena, MDSan Francisco, CA 941431225089568
- Christopher Fee, MDSan Francisco, CA 941431992762207
- Susan Lambe, MDSan Francisco, CA 941431588628598
- Matthew Lewin, MD, PHDSan Francisco, CA 941431043269277
- Daniel McDermott, MDSan Francisco, CA 941431316996556
- Jay Menaker, M.D.San Francisco, CA 941431568437176
- Lance Montauk, MDSan Francisco, CA 941431902862840
Common questions
What is Yonathan Ararso, MD,MS's NPI number?
Yonathan Ararso, MD,MS's National Provider Identifier (NPI) is 1558941427, issued on Apr 13, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Yonathan Ararso, MD,MS located?
The NPPES record lists a practice address at 505 Parnassus Ave RM M24, San Francisco, CA, 94143. Phone: (415) 353-1529. Providers update this record themselves, so call before visiting.
How can I verify Yonathan Ararso, MD,MS's license?
NPPES lists California license number A194602, 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.
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.