Physician Profile
Based in Lake Forest, IL, Dennis A. Pessis, M.D. is listed in the NPI registry under urology. According to Medicare claims data, Dennis cared for 1,467 Medicare patients across 1,999 services. The services billed most often include automated urinalysis test, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and insertion of needle into vein for collection of blood sample.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
900 N WESTMORELAND RD STE 128
Lake Forest, IL 60045
1725 W Harrison St SUITE 970
Chicago, IL 60612
Within Urology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Most searched conditions
Bladder and urethra
Kidney and ureter
Male reproductive and sexual health
Prostate
Urinary symptoms and infection
Bladder & Urination
Kidney health
Men's health
Urinary symptoms
Most searched procedures
Office diagnosis
Bladder procedures
Diagnostic imaging
Kidney & ureter procedures
Kidney and ureter surgery
Male reproductive
Prostate
Prostate procedures
Stone procedures
1,999 services · 1,467 patients · 12 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
352 | More often than most peers in Urology |
| Ultrasound measurement of bladder capacity after voiding | Procedure | 51798 |
209 | More often than most peers in Urology |
| Electronic assessment of bladder emptying | Procedure | 51741 |
105 | More often than most peers in Urology |
| Diagnostic exam of bladder and urethra using an endoscope | Procedure | 52000 |
47 | Less often than most peers in Urology |
| Simple bladder irrigation and/or instillation | Procedure | 51700 |
24 | As often as other peers in Urology |
| Administration of hormonal anti-neoplastic chemotherapy under skin or into muscle | Treatment | 96402 |
17 | Less often than most peers in Urology |
| Leuprolide acetate (for depot suspension), 7.5 mg | Drug given | J9217 |
108 | As often as other peers in Urology |
| Automated urinalysis test | Lab test | 81003 |
528 | More often than most peers in Urology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
494 | More often than most peers in Urology |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
71 | Less often than most peers in Urology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dennis A. Pessis is an urologist in Lake Forest, IL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Urology”.
NPI registry
Dennis A. Pessis is listed at 900 N Westmoreland Rd Ste 128, Lake Forest, IL 60045. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (847) 535-7657. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Dennis A. Pessis's National Provider Identifier is 1578540746. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Dennis A. Pessis has 21+ years experience. Registered with an NPI since 2005. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
According to Medicare billing data, Dennis A. Pessis performs procedures including insertion of needle into vein for collection of blood sample, ultrasound measurement of bladder capacity after voiding and electronic assessment of bladder emptying; provides treatments such as administration of hormonal anti-neoplastic chemotherapy under skin or into muscle, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Dennis A. Pessis. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.