Mary K O'Callaghan DO PC
NPI 1467650614 · Internal Medicine Physician · Ludington, MI
Mary K O'Callaghan DO PC is a Internal Medicine Physician organization in Ludington, MI (NPI 1467650614).
Provider details
- NPI number
- 1467650614
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Mary O'Callaghan, Physician(231) 845-7380
- License
- 009391 (MI)
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
18 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
- 2007-07-10
- Last updated
- 2023-03-07
Frequently asked questions
- What is Mary K O'Callaghan DO PC's NPI number?
- Mary K O'Callaghan DO PC's National Provider Identifier (NPI) is 1467650614, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Mary K O'Callaghan DO PC?
- Mary K O'Callaghan DO PC is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mary K O'Callaghan DO PC located?
- Mary K O'Callaghan DO PC's practice location on file with NPPES is 922 Lawndale St, Ludington, MI 49431-1928.
- What is Mary K O'Callaghan DO PC's phone number?
- The practice phone number listed in the NPPES registry for Mary K O'Callaghan DO PC is (231) 845-7380.
- Who is the authorized official for Mary K O'Callaghan DO PC?
- The authorized official listed on Mary K O'Callaghan DO PC's NPPES record is Mary O'Callaghan, Physician. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Mary K O'Callaghan DO PC's NPI active?
- Yes — Mary K O'Callaghan DO PC's NPI (1467650614) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.