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Cardiovascular Disease (Cardiology)

John E. McLachlan Jr., MD

Works at hospitals in Baton Rouge, LA · Louisiana

Summary

John E. McLachlan Jr., MD (Cardiovascular Disease (Cardiology)) is listed by Medicare at 1 hospital in Baton Rouge, LA. NPI 1457331761. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about John E. McLachlan Jr., joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Cardiovascular Disease (Cardiology)Primary specialty
YesAccepts Medicare assignment
YesOffers telehealth
35Years since medical school (graduated 1991)
MaleGender (as listed)
Our Lady of the Lake Physician Group LLCGroup practice (+1 more)

Quick answers

Which hospitals does John E. McLachlan Jr. work at?
Medicare's official clinician data lists John E. McLachlan Jr. at 1 hospital: Our Lady of the Lake Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does John E. McLachlan Jr. see patients?
Medicare's clinician data lists 3 practice locations, including Walker, LA and Baton Rouge, LA. Call before your visit to confirm the address.
What is John E. McLachlan Jr.'s specialty?
Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty.
Does John E. McLachlan Jr. accept Medicare assignment?
Yes. Medicare's clinician data says John E. McLachlan Jr. accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does John E. McLachlan Jr. offer telehealth?
Medicare's clinician data says John E. McLachlan Jr. offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for John E. McLachlan Jr.?
(225) 271-4195, as listed in official Medicare / NPI Registry data.
What is John E. McLachlan Jr.'s NPI number?
1457331761. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where John E. McLachlan Jr. works

Medicare's Facility Affiliation Data lists John E. McLachlan Jr. at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where John E. McLachlan Jr. is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists John E. McLachlan Jr. as a member of these groups (CMS data updated 2026-10-02).

  • Our Lady of the Lake Physician Group LLC644 clinicians in the group
  • Baton Rouge General Physicians Inc191 clinicians in the group

Specialties

Find other Cardiovascular Disease (Cardiology) doctors in Louisiana →

Other cardiologists in Walker

Clinicians with the same Medicare primary specialty in Walker, LA — not a recommendation.

All cardiologists in Walker →

Clinician information

CredentialMD
Graduation year1991
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1457331761
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians