HCPList Know more before you call. About
A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Ryan Michael Langley, D.O. with clinicians in the same registry specialty: Internal Medicine.

HOLLAND, MI · Exact areaEdit location

2024 published service data · 24 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Brett Thomas Vander Baan, MD

Internal Medicine · Holland, MI

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
94%Service-mix similarityView profile →

Donald Charles Mcmillan, D.O.

Internal Medicine · Holland, MI

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
93%Service-mix similarityView profile →

Thomas Provo Pfotenhauer, D.O.

Internal Medicine · Holland, MI

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
93%Service-mix similarityView profile →

Cassondra Wass

Internal Medicine · Holland, MI

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
87%Service-mix similarityView profile →

Matthew Fletcher, DO

Internal Medicine · Holland, MI

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
84%Service-mix similarityView profile →

Jason Christopher Cornell, M.D.

Internal Medicine · Holland, MI

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
83%Service-mix similarityView profile →

Karl John Lauterbach, M.D.

Internal Medicine · Holland, MI

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
19%Service-mix similarityView profile →

Shanon Walko, DO

Internal Medicine · Holland, MI

Shared published services
1 shared services · view billing descriptions
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
10%Service-mix similarityView profile →

Christopher S Howell, MD

Internal Medicine · Holland, MI

Shared published services
1 shared services · view billing descriptions
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
10%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.