Michael O'Neill, MD
NPI 1598704678 · Hospice and Palliative Medicine (Internal Medicine) Physician · Marietta, GA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael O'Neill, MD is a Hospice and Palliative Medicine (Internal Medicine) Physician provider in Marietta, GA (NPI 1598704678).
Provider details
- NPI number
- 1598704678
- Entity type
- Individual
- Primary specialty
- Hospice and Palliative Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 30175 (GA)
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
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 1365 Clifton RoadAtlanta, GA 30322-1064Phone: (404) 778-7717Fax: (404) 778-7466
Registry dates
- Enumerated
- 2006-06-05
- Last updated
- 2019-10-11
Frequently asked questions
- What is Michael O'Neill's NPI number?
- Michael O'Neill's National Provider Identifier (NPI) is 1598704678, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael O'Neill's specialty?
- Michael O'Neill is listed in the NPPES registry with a primary specialty of Hospice and Palliative Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Michael O'Neill located?
- Michael O'Neill's practice location on file with NPPES is 677 Church St Ne, Marietta, GA 30060-1101.
- What is Michael O'Neill's phone number?
- The practice phone number listed in the NPPES registry for Michael O'Neill is (770) 793-7750.
- Does Michael O'Neill accept Medicare?
- Michael O'Neill is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael O'Neill's NPI active?
- Yes — Michael O'Neill's NPI (1598704678) is active in the NPPES registry as of the last update on 2019-10-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.