John Clark, M.D.
NPI 1174664890 · Therapeutic Radiology Physician · Redding, CA
Enrolled with Medicare as Order and Referring Only - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Clark, M.D. is a Therapeutic Radiology Physician provider in Redding, CA (NPI 1174664890).
Provider details
- NPI number
- 1174664890
- Entity type
- Individual
- Primary specialty
- Therapeutic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A24026 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
- 2007-02-08
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Clark's NPI number?
- John Clark's National Provider Identifier (NPI) is 1174664890, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Clark's specialty?
- John Clark is listed in the NPPES registry with a primary specialty of Therapeutic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is John Clark located?
- John Clark's practice location on file with NPPES is 1325 Bambury Ct, Redding, CA 96001-1339.
- What is John Clark's phone number?
- The practice phone number listed in the NPPES registry for John Clark is (530) 246-4971.
- Does John Clark accept Medicare?
- John Clark is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Clark's NPI active?
- Yes — John Clark's NPI (1174664890) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.