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Compare the published Medicare service mix of Christopher L Groth, MD with clinicians in the same registry specialty: Neurology.

IOWA CITY, IA · Exact areaEdit location

2024 published service data · 28 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Ann Killoran, MD

Neurology · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Needle measurement of electrical activity in muscle with injection of chemical for paralysis of nerve muscle (95874)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
73%Service-mix similarityView profile →

Qiang Zhang, M.D.

Neurology · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Electronic analysis of implanted brain, spinal cord, or peripheral neurostimulator generator with brain stimulator programming, each additional 15 minutes with qualified health professional (95984)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
72%Service-mix similarityView profile →

Nandakumar Narayanan, M.D.

Neurology · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Electronic analysis of implanted brain, spinal cord, or peripheral neurostimulator generator with brain stimulator programming, each additional 15 minutes with qualified health professional (95984)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Electronic analysis of implanted brain, spinal cord, or peripheral neurostimulator generator with brain stimulator programming, first 15 minutes with qualified health professional (95983)
70%Service-mix similarityView profile →

Hyungsub Shim, M.D.

Neurology · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
56%Service-mix similarityView profile →

Christopher Scott Nance, M.D.

Neurology · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
52%Service-mix similarityView profile →

Lama Abdel Wahed, MD

Neurology · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
50%Service-mix similarityView profile →

Annaliese Bosco, M.D.

Neurology · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
47%Service-mix similarityView profile →

Christine M Gill, MD

Neurology · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
47%Service-mix similarityView profile →

Ergun Yasar Uc, MD

Neurology · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Electronic analysis of implanted brain, spinal cord, or peripheral neurostimulator generator with brain stimulator programming, first 15 minutes with qualified health professional (95983)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
47%Service-mix similarityView profile →

Joel Charles Geerling, M.D., PH.D.

Neurology · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
47%Service-mix similarityView profile →

Tracey Alexander Cho, MD

Neurology · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
45%Service-mix similarityView profile →

Alejandro Torres-Trejo, M.D.

Neurology · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
44%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.