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Gastroenterology

Mariana De Jongh-Beyer, MD

Works at hospitals in The Villages, FL · Florida

Summary

Dr. Mariana De Jongh-Beyer, MD is a gastroenterologist at 1150 SE 18th Place, Ocala, FL 34471. Phone: (352) 732-8905. Accepts Medicare assignment. In 2024, Mariana De Jongh-Beyer had 1,064 Original Medicare patients and 2,132 services. NPI 1609089853. 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.

  • Specialty: Gastroenterologist (Medicare lists Gastroenterology)
  • Address: 1150 SE 18th Place, Ocala, FL 34471 · Directions (2 more locations)
  • Phone: (352) 732‑8905
  • Medicare: Accepts Medicare assignment
  • Hospital: The Villages Regional Hospital
  • Group practice: Endoscopy Center of Ocala Inc
  • Medical school: graduated 1999 (27 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Mariana De Jongh-Beyer, 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 Mariana De Jongh-Beyer accept Medicare assignment?
Yes. Medicare's clinician data says Mariana De Jongh-Beyer 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 Mariana De Jongh-Beyer see?
In 2024, CMS data shows 1,064 Original Medicare patients and 2,132 services for Mariana De Jongh-Beyer. This counts Original Medicare only and measures volume, not quality.
What is Mariana De Jongh-Beyer's NPI number?
1609089853. 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 Mariana De Jongh-Beyer, 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 patients1,064
Services billed to Medicare2,132
Different services or procedures30
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)482 services
  2. Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)277 services
  3. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)272 services
  4. Removal of external hemorrhoids by rubber banding (46221)223 services
  5. Biopsy of large bowel using a flexible endoscope (45380)199 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%
  • Arthritis53%
  • Ischemic heart disease34%
  • Anxiety28%
  • Chronic kidney disease28%

Hospitals where Mariana De Jongh-Beyer works

Medicare's Facility Affiliation Data lists Mariana De Jongh-Beyer 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.

  • The Villages Regional HospitalThe Villages, FL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 100290

Practice locations

Addresses where Mariana De Jongh-Beyer is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Mariana De Jongh-Beyer as a member of this group (CMS data updated October 2, 2026).

  • Endoscopy Center of Ocala Inc19 clinicians in the group

Specialties

Find other Gastroenterology doctors in Florida →

Other gastroenterologists in Ocala

Clinicians with the same Medicare primary specialty in Ocala, FL — not a recommendation.

All gastroenterologists in Ocala →

Other clinicians in Endoscopy Center of Ocala Inc

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

Clinician information

CredentialMD
Graduation year1999 (27 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1609089853
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