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Compare the published Medicare service mix of Tanner Michael Johanns, MD with clinicians in the same registry specialty: Internal Medicine · Medical Oncology (CMS).

SAINT LOUIS, MO · Exact areaEdit location

2024 published service data · 87 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Omar Hameed Butt, MD

Internal Medicine · Medical Oncology (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Administration of chemotherapy into vein, 1 hour or less (96413)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Injection of additional new drug or substance into vein (96375)
88%Service-mix similarityView profile →

Nancy Lee Bartlett, MD

Internal Medicine · Medical Oncology (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Administration of chemotherapy into vein, 1 hour or less (96413)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Injection of additional new drug or substance into vein (96375)
86%Service-mix similarityView profile →

Douglas R Adkins, MD

Internal Medicine · Medical Oncology (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Administration of chemotherapy into vein, 1 hour or less (96413)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Injection of additional new drug or substance into vein (96375)
83%Service-mix similarityView profile →

Mark Lee Sundermeyer, MD

Internal Medicine · Medical Oncology (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Administration of chemotherapy into vein, 1 hour or less (96413)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Injection of additional new drug or substance into vein (96375)
83%Service-mix similarityView profile →

Nusayba A Bagegni, MD

Internal Medicine · Medical Oncology (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Administration of chemotherapy into vein, 1 hour or less (96413)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Injection of additional new drug or substance into vein (96375)
83%Service-mix similarityView profile →

Nikolaos Trikalinos, MD

Internal Medicine · Medical Oncology (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Administration of chemotherapy into vein, 1 hour or less (96413)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Injection of additional new drug or substance into vein (96375)
82%Service-mix similarityView profile →

Ramaswamy Govindan, MD

Internal Medicine · Medical Oncology (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Administration of chemotherapy into vein, 1 hour or less (96413)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Injection of additional new drug or substance into vein (96375)
82%Service-mix similarityView profile →

Katherine Keaney Clifton, MD

Internal Medicine · Medical Oncology (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Administration of chemotherapy into vein, 1 hour or less (96413)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Injection of additional new drug or substance into vein (96375)
82%Service-mix similarityView profile →

Saiama Naheed Waqar, MD

Internal Medicine · Medical Oncology (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Administration of chemotherapy into vein, 1 hour or less (96413)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Injection of additional new drug or substance into vein (96375)
79%Service-mix similarityView profile →

Brad Steven Kahl, MD

Internal Medicine · Medical Oncology (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Administration of chemotherapy into vein, 1 hour or less (96413)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Injection of additional new drug or substance into vein (96375)
78%Service-mix similarityView profile →

Olivia Aranha, MD

Internal Medicine · Medical Oncology (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Administration of chemotherapy into vein, 1 hour or less (96413)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Injection of additional new drug or substance into vein (96375)
75%Service-mix similarityView profile →

Mia Chana Weiss, MD

Internal Medicine · Medical Oncology (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Administration of chemotherapy into vein, 1 hour or less (96413)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Injection of additional new drug or substance into vein (96375)
75%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.