Simon Ascher, M.D., M.P.H.
Hospitalist Physician · Sacramento, CA
Simon Ascher, M.D., M.P.H. is a hospitalist physician with a practice address in Sacramento, California, and NPI 1558604835, issued on Apr 4, 2013. Check the license (California A135057, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Simon Ascher
- Credential
- M.D., M.P.H.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- A135057 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4150 V St Ste 3400, Sacramento, CA 95817
- Phone
- (916) 734-7506
- Enumerated
- Apr 4, 2013
- Record last updated
- Jun 10, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20160531002409); accepts Medicare assignment
- Medical or professional school
- Duke University School Of Medicine, 2013
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 4150 V St Ste 3400
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Verify Simon Ascher in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A135057Check 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 one group practice
- Regents OF The Univ OF CASacramento, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Simon Ascher among 3,099 hospitalist physician records in California
Simon Ascher, M.D., M.P.H. is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 56% of them.
- NPI issued2013 · 56% of these records are older, 39% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2013 · median 2010 among the 2,505 with a school on file
- Record last updated2019 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Sacramento → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Xiao Cai, M.D.Sacramento, CA 958171205070067
- Gerardo CanedoSacramento, CA 958171588068969
- Wendy Chu, M.D.Sacramento, CA 958171780901231
- Theresa DuongSacramento, CA 958171245506872
- Willard Ellis, MDSacramento, CA 958171306824503
- Ranganathan Madhavan, M.D.Sacramento, CA 958171043355019
- Emily Marquet, M.D.Sacramento, CA 958171972869402
- Alison McWilliams, D.O.Sacramento, CA 958171740629476
Common questions
What is Simon Ascher, M.D., M.P.H.'s NPI number?
Simon Ascher, M.D., M.P.H.'s National Provider Identifier (NPI) is 1558604835, issued on Apr 4, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Simon Ascher, M.D., M.P.H. located?
The NPPES record lists a practice address at 4150 V St Ste 3400, Sacramento, CA, 95817. Phone: (916) 734-7506. Providers update this record themselves, so call before visiting.
How can I verify Simon Ascher, M.D., M.P.H.'s license?
NPPES lists California license number A135057, 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.