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Infectious Disease

Leland N. Allen Iii, MD

Works at hospitals in Tuscaloosa, AL · Birmingham, AL · Pell City, AL … · Alabama

Summary

Dr. Leland N. Allen Iii, MD is an infectious disease doctor at 833 Saint Vincents Dr, Suite 300, Birmingham, AL 35205. Phone: (205) 933-4640. Accepts Medicare assignment. In 2024, Leland N. Allen Iii had 216 Original Medicare patients and 2,091 services. NPI 1245258573. 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 Leland N. Allen Iii, 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 Leland N. Allen Iii accept Medicare assignment?
Yes. Medicare's clinician data says Leland N. Allen Iii 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 Leland N. Allen Iii see?
In 2024, CMS data shows 216 Original Medicare patients and 2,091 services for Leland N. Allen Iii. This counts Original Medicare only and measures volume, not quality.
What is Leland N. Allen Iii's NPI number?
1245258573. 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 Leland N. Allen Iii, 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 patients216
Services billed to Medicare2,091
Different services or procedures43
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)637 services
  2. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)95 services
  3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)83 services
  4. Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)74 services
  5. Red blood cell sedimentation rate, to detect inflammation, automated (85652)64 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%
  • Arthritis69%
  • Diabetes55%
  • Chronic kidney disease54%
  • Ischemic heart disease49%

Hospitals where Leland N. Allen Iii works

Medicare's Facility Affiliation Data lists Leland N. Allen Iii 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.

  • DCH Regional Medical CenterTuscaloosa, AL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 010092
  • St Vincent's BirminghamBirmingham, AL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 010056
  • St Vincent's St ClairPell City, AL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 010130
  • St Vincents BlountOneonta, AL · Critical Access Hospital · Emergency services: not listed by Medicare · CCN 011305
  • St. Vincent's EastBirmingham, AL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 010011

Practice locations

Addresses where Leland N. Allen Iii is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Leland N. Allen Iii as a member of this group (CMS data updated October 2, 2026).

  • Southview Medical Group, PC40 clinicians in the group

Specialties

Find other Infectious Disease doctors in Alabama →

Other infectious disease doctors in Birmingham

Clinicians with the same Medicare primary specialty in Birmingham, AL — not a recommendation.

All infectious disease doctors in Birmingham →

Other clinicians in Southview Medical Group, PC

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

Clinician information

CredentialMD
Medical schoolUniversity Of Alabama School Of Medicine
Graduation year1993 (33 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1245258573
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