Simon Ascher, M.D., M.P.H.
NPI 1558604835 · Hospitalist Physician · Sacramento, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Simon Ascher, M.D., M.P.H. is a Hospitalist Physician provider in Sacramento, CA (NPI 1558604835).
Provider details
- NPI number
- 1558604835
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., M.P.H.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A135057 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
168 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 76 | $79 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 38 | $116 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 25 | $117 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 15 | $131 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 14 | $175 |
Typical Medicare-allowed amounts for these services range $79–$175 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 1250 16th StSuite C2304Santa Monica, CA 90404-1249Phone: (310) 319-4698
Registry dates
- Enumerated
- 2013-04-04
- Last updated
- 2019-06-10
Frequently asked questions
- What is Simon Ascher's NPI number?
- Simon Ascher's National Provider Identifier (NPI) is 1558604835, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Simon Ascher's specialty?
- Simon Ascher is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Simon Ascher located?
- Simon Ascher's practice location on file with NPPES is 4150 V St Ste 3400, Sacramento, CA 95817-1460.
- What is Simon Ascher's phone number?
- The practice phone number listed in the NPPES registry for Simon Ascher is (916) 734-7506.
- Does Simon Ascher accept Medicare?
- Simon Ascher is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Simon Ascher's NPI active?
- Yes — Simon Ascher's NPI (1558604835) is active in the NPPES registry as of the last update on 2019-06-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.