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Compare the published Medicare service mix of Shana L Vifian Ray, M.D. with clinicians in the same registry specialty: Neurology (CMS).

EAU CLAIRE, WI · 100 milesEdit location
Within 100 miles · Approximate ZIP-area distance

Approximate straight-line distances between ZIP-area centers; a city search starts from the average of its ZIP centers. Uses the primary reported practice ZIP, not an exact office address or driving distance. Records without matched coordinates are excluded. How distance works

2024 published service data · 12 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Erin C Golden, MD

Neurology · Sleep Medicine (CMS) · Minneapolis, MN

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Home sleep test (hst) with type iv portable monitor, unattended; minimum of 3 channels (G0400)
  • Sleep study in sleep lab with continuous airway pressure (6 years or older) (95811)
73%Service-mix similarity~86.8 milesView profile →

Tacjana Krystyna Eich Friday, MD

Neurology · Sleep Medicine (CMS) · Blaine, MN

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Sleep study in sleep lab with continuous airway pressure (6 years or older) (95811)
  • Sleep study in sleep lab (6 years or older) (95810)
70%Service-mix similarity~89.0 milesView profile →

Margaret Blattner, MD, PHD

Sleep Medicine (CMS) · Rochester, MN

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Sleep study in sleep lab with continuous airway pressure (6 years or older) (95811)
  • Sleep study in sleep lab (6 years or older) (95810)
67%Service-mix similarity~72.3 milesView profile →

Diego Zaquera Carvalho, M.D.

Sleep Medicine (CMS) · Rochester, MN

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Home sleep test (hst) with type iv portable monitor, unattended; minimum of 3 channels (G0400)
  • Sleep study in sleep lab with continuous airway pressure (6 years or older) (95811)
66%Service-mix similarity~72.3 milesView profile →

John A Damergis, M.D.

Neurology · Sleep Medicine (CMS) · Bloomington, MN

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Sleep study in sleep lab with continuous airway pressure (6 years or older) (95811)
  • Sleep study in sleep lab (6 years or older) (95810)
62%Service-mix similarity~90.0 milesView profile →

Mustafa Orhan Ucer, MD

Pulmonary Disease (CMS) · Saint Paul, MN

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Sleep study in sleep lab with continuous airway pressure (6 years or older) (95811)
  • Sleep study in sleep lab (6 years or older) (95810)
58%Service-mix similarity~78.3 milesView profile →

Tanaporn Rasameesoraj, M.D.

Sleep Medicine (CMS) · St Louis Park, MN

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Sleep study in sleep lab (6 years or older) (95810)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
57%Service-mix similarity~92.7 milesView profile →

Ranji Varghese, MD

Psychiatry (CMS) · Minneapolis, MN

Shared published services
3 shared services · view billing descriptions
  • Sleep study in sleep lab with continuous airway pressure (6 years or older) (95811)
  • Sleep study in sleep lab (6 years or older) (95810)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
55%Service-mix similarity~86.8 milesView profile →

Ivy M Andersen, MD

Neurology · Psychiatry · Sleep Medicine (CMS) · La Crosse, WI

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Sleep study in sleep lab with continuous airway pressure (6 years or older) (95811)
  • Sleep study in sleep lab (6 years or older) (95810)
53%Service-mix similarity~71.2 milesView profile →

Michelle Devine, MD

Neurology · Sleep Medicine (CMS) · Rochester, MN

Shared published services
3 shared services · view billing descriptions
  • 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)
  • 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)
52%Service-mix similarity~70.8 milesView profile →

Yumna Saeed, M.D.

Sleep Medicine (CMS) · Bloomington, MN

Shared published services
2 shared services · view billing descriptions
  • 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)
38%Service-mix similarity~90.0 milesView profile →

Rakesh John, MD

Psychiatry · Sleep Medicine (CMS) · Edina, MN

Shared published services
3 shared services · view billing descriptions
  • Sleep study in sleep lab with continuous airway pressure (6 years or older) (95811)
  • Sleep study in sleep lab (6 years or older) (95810)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
38%Service-mix similarity~90.0 milesView 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 approximate distance 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.