Mary Keating Ocallaghan, DO
Internal Medicine Physician · Ludington, MI
Mary Keating Ocallaghan, DO is an internal medicine physician with a practice address in Ludington, Michigan, and NPI 1558369884, issued on Jul 11, 2005. Check the license (Michigan 5101009391, as entered in NPPES) on the Michigan Board of Medicine (LARA); the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mary Keating Ocallaghan
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 5101009391 MI
Self-reported in NPPES; status is on the state search - Practice location
- 889 N Jebavy Dr, Ludington, MI 49431
- Phone
- (231) 510-6877
- Enumerated
- Jul 11, 2005
- Record last updated
- Jul 14, 2020 (not updated in 6 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,735 in Michigan → Look up another NPI →
Verify Mary Keating Ocallaghan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 5101009391Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Mary Keating Ocallaghan among 5,735 internal medicine physician records in Michigan
Mary Keating Ocallaghan, DO is one of 5,735 internal medicine physician records with a practice address in Michigan. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 90% newer
- In a Medicare fileNo · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2020 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 internal medicine physician records list a practice address in Ludington
They are 9 of the 481 NPPES records with a practice address in Ludington, and 5,735 internal medicine physician records in Michigan. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 5,735 in Michigan → Every provider in Ludington → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Joel Allotey, MDLudington, MI 494311376216507
- Ralph Avedisian, DOLudington, MI 494311316054125
- Amy Beeman, D.O.Ludington, MI 494311891743837
- Catherine Czesnowski, M.D.Ludington, MI 494311013399245
- Zane Knoer, DOLudington, MI 494311326155144
- Bryan Kovas, M.D.Ludington, MI 494311063684769
- Bobby Lee, MDLudington, MI 494311891767489
- Keith Marcus, MDLudington, MI 494311255371365
Common questions
What is Mary Keating Ocallaghan, DO's NPI number?
Mary Keating Ocallaghan, DO's National Provider Identifier (NPI) is 1558369884, issued on Jul 11, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mary Keating Ocallaghan, DO located?
The NPPES record lists a practice address at 889 N Jebavy Dr, Ludington, MI, 49431. Phone: (231) 510-6877. Providers update this record themselves, so call before visiting.
How can I verify Mary Keating Ocallaghan, DO's license?
NPPES lists Michigan license number 5101009391, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.