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Compare the published Medicare service mix of Samuel Patrick Walker, M.D. with clinicians in the same registry specialty: Internal Medicine.

AL · Exact areaEdit location

2024 published service data · 500 eligible profiles compared. This search reached its 500-profile comparison limit, using NPI order. Narrow the location for a more focused comparison. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Amit V Vora, MD

Internal Medicine · Hartselle, AL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Injection of drug or substance under skin or into muscle (96372)
54%Service-mix similarityView profile →

Emilie O'brien White Hallford, M.D.

Internal Medicine · Mobile, AL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Insertion of needle into vein for collection of blood sample (36415)
54%Service-mix similarityView profile →

Lauren Lavender Pacheco, M.D.

Internal Medicine · Birmingham, AL

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
53%Service-mix similarityView profile →

Jeffrey Dean Voreis, MD

Internal Medicine · Georgiana, AL

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
53%Service-mix similarityView profile →

Max Ronald Shiver, MD

Internal Medicine · Birmingham, AL

Shared published services
3 shared services · view billing descriptions
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
52%Service-mix similarityView profile →

Eduardo Javier Villeda, M.D.

Internal Medicine · Oxford, AL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Insertion of needle into vein for collection of blood sample (36415)
50%Service-mix similarityView profile →

Shameer B Abrahim, MD

Internal Medicine · Mobile, AL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Insertion of needle into vein for collection of blood sample (36415)
49%Service-mix similarityView profile →

Sarah Diana Dabbas, MD

Internal Medicine · Mobile, AL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Injection of drug or substance under skin or into muscle (96372)
49%Service-mix similarityView profile →

Umut Ege Tufan, MD

Internal Medicine · Florence, AL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
49%Service-mix similarityView profile →

James Brian Wilhite, M.D.

Internal Medicine · Tuscaloosa, AL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Injection of drug or substance under skin or into muscle (96372)
49%Service-mix similarityView profile →

Radwan Mallah, MD

Internal Medicine · Gadsden, AL

Shared published services
3 shared services · view billing descriptions
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
47%Service-mix similarityView profile →

Walter Hamilton, MD

Internal Medicine · Mobile, AL

Shared published services
3 shared services · view billing descriptions
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
47%Service-mix similarityView profile →
How this comparison works

We use the same calendar year of CMS Medicare Physician & Other Practitioners data for both providers. Published non-drug service counts are combined by HCPCS code across places of service. We apply log(1 + count), normalize the vectors, and compare them using cosine similarity.

Candidates share the reference provider’s current NPPES primary taxonomy and match the location you enter. We examine up to 500 candidates in NPI order, then show up to 12 with the highest positive similarity within that set. The score is not a percentile, medical recommendation, or prediction. Suppressed services are not estimated. Medicare fee-for-service data does not describe a provider’s entire practice.

Source: CMS Medicare Physician & Other Practitioners - by Provider and Service : 2024-12-01 · Published May 21, 2026.