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Compare the published Medicare service mix of Klaus-Dieter K Lessnau, MD with clinicians in the same registry specialty: Critical Care (Intensivists) · Internal Medicine · Pulmonary Disease · Sleep Medicine (CMS).

NEW YORK, NY · Exact areaEdit location

2024 published service data · 17 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Helena Miriam Schotland, M.D.

Pulmonary Disease · Sleep Medicine (CMS) · New York, NY

Shared published services
3 shared services · view billing descriptions
  • Test to measure expiratory airflow and volume changes before and after medication administration (94060)
  • Test to examine how well the lungs exchange gases (94729)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
58%Service-mix similarityView profile →

Oren Cohen

Sleep Medicine (CMS) · New York, NY

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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
42%Service-mix similarityView profile →

Sean Michael Duenas, M.D.

Critical Care (Intensivists) · Pulmonary Disease (CMS) · New York, NY

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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
41%Service-mix similarityView profile →

Vaishnavi Kundel, M.D.

Sleep Medicine (CMS) · New York, NY

Shared published services
2 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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
41%Service-mix similarityView profile →

Sanja Jelic, M.D.

Critical Care (Intensivists) · Internal Medicine · Pulmonary Disease (CMS) · New York, NY

Shared published services
3 shared services · view billing descriptions
  • Test to measure expiratory airflow and volume changes before and after medication administration (94060)
  • Test to examine how well the lungs exchange gases (94729)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
41%Service-mix similarityView profile →

Omer Ahmed, M.D.

Critical Care (Intensivists) · Emergency Medicine · Hospitalist · Internal Medicine · Pulmonary Disease · Sleep Medicine (CMS) · New York, NY

Shared published services
3 shared services · view billing descriptions
  • Test to examine how well the lungs exchange gases (94729)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
40%Service-mix similarityView profile →

Steven H Feinsilver, MD

Pulmonary Disease · Sleep Medicine (CMS) · New York, NY

Shared published services
3 shared services · view billing descriptions
  • Test to measure expiratory airflow and volume changes before and after medication administration (94060)
  • Test to examine how well the lungs exchange gases (94729)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
38%Service-mix similarityView profile →

Thomas Mcduffy Tolbert, MD

Sleep Medicine (CMS) · New York, NY

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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
37%Service-mix similarityView profile →

Andrew William Varga, MD/PHD

Neurology · Sleep Medicine (CMS) · New York, NY

Shared published services
2 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
34%Service-mix similarityView profile →

Kammi Grayson, DO

Sleep Medicine (CMS) · New York, NY

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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
26%Service-mix similarityView profile →

Miranda Tan, DO

Critical Care (Intensivists) (CMS) · New York, NY

Shared published services
2 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
26%Service-mix similarityView profile →

Vincent Xavier Grbach, MD

Sleep Medicine (CMS) · New York, NY

Shared published services
2 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
25%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.