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Hospitalist

Marijesmar G. Ball, MD

Works at hospitals in Tampa, FL · Florida

Summary

Dr. Marijesmar G. Ball, MD is a hospitalist at 3500 E Fletcher Ave, Suite 100, Tampa, FL 33613. Phone: (813) 821-8038. Accepts Medicare assignment. In 2024, Marijesmar G. Ball had 130 Original Medicare patients and 371 services. NPI 1154649424. 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: Hospitalist
  • Address: 3500 E Fletcher Ave, Suite 100, Tampa, FL 33613 · Directions
  • Phone: (813) 821‑8038
  • Medicare: Accepts Medicare assignment
  • Hospital: Tampa General Hospital
  • Group practice: University Medical Service Association Inc
  • Medical school: graduated 2011 (15 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Marijesmar G. Ball, 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 Marijesmar G. Ball accept Medicare assignment?
Yes. Medicare's clinician data says Marijesmar G. Ball 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 Marijesmar G. Ball see?
In 2024, CMS data shows 130 Original Medicare patients and 371 services for Marijesmar G. Ball. This counts Original Medicare only and measures volume, not quality.
What is Marijesmar G. Ball's NPI number?
1154649424. 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 Marijesmar G. Ball, 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 patients130
Services billed to Medicare371
Different services or procedures6
Participating Medicare providerYes
Average age of these patients71

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)213 services
  2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)71 services
  3. Hospital discharge day management, more than 30 minutes (99239)60 services
  4. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)22 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%
  • Arthritis72%
  • Chronic kidney disease61%
  • Ischemic heart disease53%
  • Heart failure51%

Hospitals where Marijesmar G. Ball works

Medicare's Facility Affiliation Data lists Marijesmar G. Ball 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.

  • Tampa General HospitalTampa, FL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 100128

Practice locations

Addresses where Marijesmar G. Ball is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Marijesmar G. Ball as a member of this group (CMS data updated October 2, 2026).

  • University Medical Service Association Inc809 clinicians in the group

Specialties

Find other Hospitalist doctors in Florida →

Other hospitalists in Tampa

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

All hospitalists in Tampa →

Other clinicians in University Medical Service Association Inc

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

Clinician information

CredentialMD
Graduation year2011 (15 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1154649424
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