Ellen Clark, DO
NPI 1174083596 · Diagnostic Radiology Physician · Oakland, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ellen Clark, DO is a Diagnostic Radiology Physician provider in Oakland, CA (NPI 1174083596).
Provider details
- NPI number
- 1174083596
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 20A23964 (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
7 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
- 2019-03-21
- Last updated
- 2025-08-04
- Certified
- 2025-08-04
Frequently asked questions
- What is Ellen Clark's NPI number?
- Ellen Clark's National Provider Identifier (NPI) is 1174083596, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ellen Clark's specialty?
- Ellen Clark is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Ellen Clark located?
- Ellen Clark's practice location on file with NPPES is 3600 Broadway Lowr Level, Oakland, CA 94611-5730.
- What is Ellen Clark's phone number?
- The practice phone number listed in the NPPES registry for Ellen Clark is (510) 752-5991.
- Does Ellen Clark accept Medicare?
- Ellen Clark is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ellen Clark's NPI active?
- Yes — Ellen Clark's NPI (1174083596) is active in the NPPES registry as of the last update on 2025-08-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.