Ellen Wiegner, MD
NPI 1831379122 · Radiation Oncology Physician · Sacramento, CA
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ellen Wiegner, MD is a Radiation Oncology Physician provider in Sacramento, CA (NPI 1831379122).
Provider details
- NPI number
- 1831379122
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A105233 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-11-05
- Last updated
- 2012-09-25
Frequently asked questions
- What is Ellen Wiegner's NPI number?
- Ellen Wiegner's National Provider Identifier (NPI) is 1831379122, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ellen Wiegner's specialty?
- Ellen Wiegner is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Ellen Wiegner located?
- Ellen Wiegner's practice location on file with NPPES is 3301 C Street, Sacramento, CA 95816.
- What is Ellen Wiegner's phone number?
- The practice phone number listed in the NPPES registry for Ellen Wiegner is (916) 536-3200.
- Does Ellen Wiegner accept Medicare?
- Ellen Wiegner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ellen Wiegner's NPI active?
- Yes — Ellen Wiegner's NPI (1831379122) is active in the NPPES registry as of the last update on 2012-09-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.