Dennis Orwig, M.D.
NPI 1144267097 · Diagnostic Radiology Physician · Greenbrae, CA
Dennis Orwig, M.D. is a Diagnostic Radiology Physician provider in Greenbrae, CA (NPI 1144267097).
Provider details
- NPI number
- 1144267097
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G57636 (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
20 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
- 2006-05-31
- Last updated
- 2008-11-06
Frequently asked questions
- What is Dennis Orwig's NPI number?
- Dennis Orwig's National Provider Identifier (NPI) is 1144267097, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dennis Orwig's specialty?
- Dennis Orwig is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Dennis Orwig located?
- Dennis Orwig's practice location on file with NPPES is 250 Bon Air Rd, Greenbrae, CA 94904-1702.
- What is Dennis Orwig's phone number?
- The practice phone number listed in the NPPES registry for Dennis Orwig is (415) 925-7301.
- Is Dennis Orwig's NPI active?
- Yes — Dennis Orwig's NPI (1144267097) is active in the NPPES registry as of the last update on 2008-11-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.