David Greatorex, M.D.
NPI 1164409264 · Diagnostic Radiology Physician · Portland, ME
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Greatorex, M.D. is a Diagnostic Radiology Physician provider in Portland, ME (NPI 1164409264).
Provider details
- NPI number
- 1164409264
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 015632 (ME)
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
- 2005-12-29
- Last updated
- 2007-07-16
Frequently asked questions
- What is David Greatorex's NPI number?
- David Greatorex's National Provider Identifier (NPI) is 1164409264, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Greatorex's specialty?
- David Greatorex is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is David Greatorex located?
- David Greatorex's practice location on file with NPPES is 144 State St, Portland, ME 04101-3776.
- What is David Greatorex's phone number?
- The practice phone number listed in the NPPES registry for David Greatorex is (207) 879-3000.
- Does David Greatorex accept Medicare?
- David Greatorex is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Greatorex's NPI active?
- Yes — David Greatorex's NPI (1164409264) is active in the NPPES registry as of the last update on 2007-07-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.