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Compare the published Medicare service mix of Cynthia Ann Wollenschlager, M.D. with clinicians in the same registry specialty: Infectious Disease · Internal Medicine (CMS).

DOWNERS GROVE, IL · 10 milesEdit location
Within 10 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 · 28 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Russell M Petrak, MD

Infectious Disease · Internal Medicine (CMS) · Burr Ridge, IL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Injection of drug or substance under skin or into muscle (96372)
  • Insertion of needle into vein for collection of blood sample (36415)
44%Service-mix similarity~4.9 milesView profile →

David W. Waitley, MD

Infectious Disease (CMS) · Burr Ridge, IL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Injection of drug or substance under skin or into muscle (96372)
  • Insertion of needle into vein for collection of blood sample (36415)
32%Service-mix similarity~4.9 milesView profile →

Brian Harting, M.D.

Infectious Disease · Internal Medicine (CMS) · Burr Ridge, IL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Injection of drug or substance under skin or into muscle (96372)
  • Insertion of needle into vein for collection of blood sample (36415)
32%Service-mix similarity~4.9 milesView profile →

Vishal Kumar Didwania, M.D.

Infectious Disease · Internal Medicine (CMS) · Burr Ridge, IL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Injection of drug or substance under skin or into muscle (96372)
  • Insertion of needle into vein for collection of blood sample (36415)
31%Service-mix similarity~4.9 milesView profile →

Ram L. Ramani, M.D.

Infectious Disease (CMS) · Burr Ridge, IL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Injection of drug or substance under skin or into muscle (96372)
  • Insertion of needle into vein for collection of blood sample (36415)
28%Service-mix similarity~4.9 milesView profile →

Mohmmad F Hajjiri, M.D.

Infectious Disease · Internal Medicine (CMS) · Lombard, IL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Insertion of needle into vein for collection of blood sample (36415)
27%Service-mix similarity~6.2 milesView profile →

Anjum S Owaisi, M.D.

Infectious Disease · Internal Medicine (CMS) · Bolingbrook, IL

Shared published services
3 shared services · view billing descriptions
  • Injection of drug or substance under skin or into muscle (96372)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less (96365)
23%Service-mix similarity~6.9 milesView profile →

David W Beezhold, DO

Infectious Disease (CMS) · Burr Ridge, IL

Shared published services
3 shared services · view billing descriptions
  • Injection of drug or substance under skin or into muscle (96372)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less (96365)
22%Service-mix similarity~4.9 milesView profile →

Nishi B Sahgal, MD

Infectious Disease (CMS) · Burr Ridge, IL

Shared published services
3 shared services · view billing descriptions
  • Injection of drug or substance under skin or into muscle (96372)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less (96365)
22%Service-mix similarity~4.9 milesView profile →

Mia Angela Taormina, D.O.

Infectious Disease · Internal Medicine (CMS) · Lombard, IL

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Insertion of needle into vein for collection of blood sample (36415)
20%Service-mix similarity~6.2 milesView profile →

Nozaina Aftab, MD

Infectious Disease (CMS) · Lombard, IL

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Insertion of needle into vein for collection of blood sample (36415)
20%Service-mix similarity~6.2 milesView profile →

Roberto Alfredo Viau Colindres, MD

Infectious Disease (CMS) · Burr Ridge, IL

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less (96365)
15%Service-mix similarity~4.9 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.