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Internal Medicine

Richard Lock, MD

Works at hospitals in Meridian, MS · Hattiesburg, MS · Waynesboro, MS · Mississippi

Summary

Richard Lock, MD (Internal Medicine) is listed by Medicare at 4 hospitals in Meridian, MS, Hattiesburg, MS and Waynesboro, MS. NPI 1659387439. 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 Richard Lock, 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

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
33Years since medical school (graduated 1993)
Boston University School Of MedicineMedical school
MaleGender (as listed)
Dumont Physician Services LLCGroup practice (+1 more)

Quick answers

Which hospitals does Richard Lock work at?
Medicare's official clinician data lists Richard Lock at 4 hospitals: Anderson Regional Medical Center, Forrest General Hospital, Merit Health Wesley and Wayne General Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Richard Lock see patients?
Medicare's clinician data lists 2 practice locations, including Meridian, MS and Hattiesburg, MS. Call before your visit to confirm the address.
What is Richard Lock's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Richard Lock accept Medicare assignment?
Yes. Medicare's clinician data says Richard Lock 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.
What is the phone number for Richard Lock?
(601) 553-6000, as listed in official Medicare / NPI Registry data.
What is Richard Lock's NPI number?
1659387439. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Richard Lock works

Medicare's Facility Affiliation Data lists Richard Lock 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 Richard Lock is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Richard Lock as a member of these groups (CMS data updated 2026-10-02).

  • Dumont Physician Services LLC46 clinicians in the group
  • Hattiesburg HB Medical Services LLC26 clinicians in the group

Specialties

Find other Internal Medicine doctors in Mississippi →

Other internal medicine doctors in Meridian

Clinicians with the same Medicare primary specialty in Meridian, MS — not a recommendation.

All internal medicine doctors in Meridian →

Clinician information

CredentialMD
Medical schoolBoston University School Of Medicine
Graduation year1993
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1659387439
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