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Internal Medicine

Ramiro A. Montalvo Jr., MD

Works at hospitals in Brookhaven, MS · Jackson, MS · McComb, MS · Mississippi

Summary

Dr. Ramiro A. Montalvo Jr., MD is an internal medicine doctor at 427 Hwy 51 N, Brookhaven, MS 39601. Phone: (601) 833-6011. Accepts Medicare assignment. In 2024, Ramiro A. Montalvo Jr. had 579 Original Medicare patients and 1,073 services. NPI 1225147135. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Ramiro A. Montalvo Jr., joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Ramiro A. Montalvo Jr. accept Medicare assignment?
Yes. Medicare's clinician data says Ramiro A. Montalvo Jr. accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Ramiro A. Montalvo Jr. see?
In 2024, CMS data shows 579 Original Medicare patients and 1,073 services for Ramiro A. Montalvo Jr.. This counts Original Medicare only and measures volume, not quality.
What is Ramiro A. Montalvo Jr.'s NPI number?
1225147135. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Ramiro A. Montalvo Jr., data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients579
Services billed to Medicare1,073
Different services or procedures33
Participating Medicare providerYes
Average age of these patients77

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)464 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)201 services
  3. Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)88 services
  4. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)48 services
  5. Insertion of needle into vein for collection of blood sample (36415)35 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Arthritis63%
  • Diabetes46%
  • Ischemic heart disease42%
  • Anxiety35%

Hospitals where Ramiro A. Montalvo Jr. works

Medicare's Facility Affiliation Data lists Ramiro A. Montalvo Jr. at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Ramiro A. Montalvo Jr. is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Ramiro A. Montalvo Jr. as a member of these groups (CMS data updated October 2, 2026).

  • Kings Daughters Medical Center77 clinicians in the group
  • KDMC Physician Clinics LLC32 clinicians in the group

Specialties

Find other Internal Medicine doctors in Mississippi →

Other internal medicine doctors in Brookhaven

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

All internal medicine doctors in Brookhaven →

Other clinicians in Kings Daughters Medical Center

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolUniversity Of Mississippi School Of Medicine
Graduation year1986 (40 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1225147135
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 October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians