Ellen A. Wiegner, MD
Radiation Oncology Physician · Sacramento, CA
Ellen A. Wiegner, MD is a radiation oncology physician with a practice address in Sacramento, California, and NPI 1831379122, issued on Nov 5, 2007. Check the license (California A105233, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ellen A. Wiegner
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- A105233 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3301 C Street, Sacramento, CA 95816
- Phone
- (916) 536-3200
- Enumerated
- Nov 5, 2007
- Record last updated
- Sep 25, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (916) 235-2182
- Medicare enrollment
- Enrolled (PECOS I20241011000260); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 735 in California → Look up another NPI →
Also registered at 3301 C Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Danielle Tartar, MD,PHDDermatology Physician1063850840
Verify Ellen A. Wiegner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A105233Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 96.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- University Hospitals Medical Group IncCleveland, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ellen A. Wiegner among 735 radiation oncology physician records in California
Ellen A. Wiegner, MD is one of 735 radiation oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 45% of them.
- NPI issued2007 · 45% of these records are older, 43% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2007 · median 2005 among the 545 with a school on file
- Record last updated2012 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in California
There are 735 radiation oncology physician records in California.
All 735 in California → Every provider in Sacramento → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Ellis Andras, MDSacramento, CA 958161306842299
- Garrick Chang, M.D.Sacramento, CA 958161952308041
- Carlin Hauck, M.D.Sacramento, CA 958161427495647
- Mark Leibenhaut, M.D.Sacramento, CA 958161932108263
- Melissa Lemieux, M.D.Sacramento, CA 958161710212113
- David Linstadt, M.D.Sacramento, CA 958161265438964
- Mark Logsdon, M.D.Sacramento, CA 958161669479853
- Hubert Pan, MDSacramento, CA 958161699017368
Common questions
What is Ellen A. Wiegner, MD's NPI number?
Ellen A. Wiegner, MD's National Provider Identifier (NPI) is 1831379122, issued on Nov 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ellen A. Wiegner, MD located?
The NPPES record lists a practice address at 3301 C Street, Sacramento, CA, 95816. Phone: (916) 536-3200. Providers update this record themselves, so call before visiting.
How can I verify Ellen A. Wiegner, MD's license?
NPPES lists California license number A105233, 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.
What is Ellen A. Wiegner, MD's MIPS final score?
The 2023 MIPS final score is 96.5 of 100. 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.