Gregory T. Bales

  • Olympia Fields, IL
  • Urologist
NPI1184789919
Medicare services, 2024
276
Medicare patients, 2024
199
Part D claims, 2024
158
Publications
69
Clinical trials
1
Practice address
20201 Crawford Ave, Olympia Fields, IL 60461
Practice phone
Call (708) 852-2953
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Prime Healthcare Olympia Fields

Olympia Fields, Illinois

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Gregory T. Bales is a urologist in Olympia Fields, Illinois

Gregory Bales practices at Prime Healthcare Olympia Fields in Olympia Fields, Illinois.

Gregory Bales' NPI, 1184789919, was assigned on December 22, 2006. Gregory Bales graduated from Tufts University School Of Medicine in 1990. Gregory Bales holds Illinois license 036090610.

NPI and contact details
NPI enumeration date
December 22, 2006
NPI status
Active
Practice phone
(708) 852-2953
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
62
Medical school graduation
1990

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data

Gregory T. Bales practices at Prime Healthcare Olympia Fields in Olympia Fields, Illinois

Gregory Bales' primary practice is Prime Healthcare Olympia Fields, at 20201 Crawford Ave, Olympia Fields, IL 60461 in Cook County. The practice phone is (708) 852-2953.

  • Prime Healthcare Olympia Fields
    20201 Crawford Ave, Olympia Fields, IL 60461 · Cook CountyPhone(708) 852-2953

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Gregory T. Bales is affiliated with 1 site of care and 1 medical group

Gregory Bales' primary practice is Prime Healthcare Olympia Fields in Olympia Fields, Illinois. The medical group on file is UChicago Medicine Physicians.

Prime Healthcare Olympia FieldsOlympia Fields, IllinoisPrimary
UChicago Medicine PhysiciansPrimary care group, Burr Ridge, IL

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Gregory T. Bales' practice

Dmand AI tracks the electronic health record (EHR) system at each site where Gregory Bales practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Prime Healthcare Olympia FieldsAvailable with a free account

Source: Dmand AI Technology Install Data

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Gregory T. Bales is one of 513 urologists in Illinois

Urology is Gregory Bales' primary specialty in the NPI Registry, under taxonomy code 208800000X. Gregory Bales is board certified in female pelvic medicine and reconstructive surgery by the American Board of Urology. Dmand AI has Gregory Bales' licenses on file in 3 states: Illinois, Indiana and Florida.

Specialties and state licenses

  • Urology, IllinoisPrimaryLicense 036090610 · 1995 to 2026 · taxonomy 208800000X
  • Indiana licenseLicense 01052755A · 2000 to 2025
  • Florida license2014 to 2016

Clinical focus

Dmand AI lists prostate cancer among the conditions Gregory Bales treats.

Urologists near Gregory Bales

Counts of urologists with a Dmand AI profile, by place and practice. Each opens the list.

513urologists in Illinois
4urologists in Olympia Fields

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Gregory T. Bales billed Medicare for 276 services in 2024

CMS data shows 276 Medicare services from Gregory Bales across 6 procedure codes in 2024, for 199 Medicare patients. Medicare paid $17,522 for them.

Medicare services, 2024276
Medicare patients199
Paid by Medicare$17,522
Procedure codes6

Gregory Bales' Medicare services by type, 2022 to 2024

  • 2022
  • 2024
Office and hospital visits
2022: 452024: 196336%
Lab and pathology
2022: 02024: 80

Where Gregory Bales' Medicare services took place, 2024

  • In an office24488%
  • In a facility3212%

Gregory Bales compared with the Illinois median for urologists, 2024

  • Gregory Bales
  • Illinois median
Medicare services
276vs 1,32379% below
Medicare patients
199vs 49059% below
Part D claims
66vs 35882% below

Medians across 498 urologists in Illinois with Dmand AI profiles that report each measure.

Gregory Bales' most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Gregory Bales

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Medicare shows one payer. Book a meeting to get commercial claims data for Gregory Bales and other urologists in Illinois.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Gregory T. Bales treated 199 Medicare patients in 2024, average age 73

CMS counts 199 Medicare patients who saw Gregory Bales in 2024. The largest group is 65 to 74, with 86 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 16% are also on Medicaid. Their average risk score is 1.61, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Gregory Bales' median patient age at 70, with 32% women.

Medicare patients, 2024199
Average age73
Average risk score1.61
Also on Medicaid16%

Gregory Bales' Medicare patients by age, 2024

Gregory Bales' Medicare patients by sex, 2024

  • Women7337%
  • Men12663%

Chronic conditions among Gregory Bales' Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis60%
  4. Diabetes37%
  5. Ischemic heart disease37%
  6. Chronic kidney disease34%
  7. Anxiety30%
  8. Mood disorders28%

Share of Medicare patients with each condition. A patient can have several.

Gregory Bales' patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 70

Patient panel by sex, all payers

  • Women32%
  • Men67%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Gregory T. Bales wrote 158 Medicare Part D claims in 2024

In 2024, Gregory Bales wrote 158 Medicare Part D claims for 78 patients. 80% of them were for generic drugs. CMS names the drug for 66 of them, across 3 drugs with 11 or more claims each, at $937 in total drug cost. In 2022, CMS named 176 claims across 6 drugs.

Part D claims, 2024158
Drugs named by CMS3
Total drug cost$937
Part D patients78

Gregory Bales' Part D claims by kind of drug, 2024

  • Generic127 claims80%
  • Brand-name31 claims20%

Gregory Bales' most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Gregory Bales' Part D claims, 2024

  • Antibiotics28%45 of 158 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2022 to 2024

  • 2022
  • 2024
Claims for drugs CMS names
2022: 1762024: 6663%

Drugs named by CMS: 3 in 2024, 6 in 2022.

See all prescribing by Gregory Bales

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

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Gregory T. Bales has 69 publications on record

Dmand AI links 69 papers to Gregory Bales, published from 2007 to 2017. 2016 was the busiest year, with 6. The most frequent topics are Postoperative Complications, Prostatectomy and Urinary Bladder. Gregory Bales has published most often in Urology. Gregory Bales' most frequent co-authors are Joshua Aaron Cohn, MD, Sarah F. Faris and Desiderio Avila, MD.

Papers69
Years published2007 to 2017

Gregory Bales' papers by year, 2007 to 2017

Topics Gregory Bales writes about most

  • Postoperative Complications
  • Prostatectomy
  • Urinary Bladder
  • Prostatic Hyperplasia
  • Urinary Incontinence, Stress
  • Cystectomy
  • Urologic Surgical Procedures
  • Laparoscopy

Gregory Bales' most frequent co-authors

Recent publications by Gregory Bales

See all 69 publications and co-authors

See who Gregory Bales researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Gregory Bales works with, so you can find a warm path to the right urologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Gregory T. Bales has worked on 1 clinical trial

Dmand AI links Gregory Bales to 1 clinical trial. Conditions studied include Urinary Incontinence, Stress and Urinary Incontinence.

Conditions in Gregory Bales' trials

  • Urinary Incontinence, Stress
  • Urinary Incontinence

Investigators on the most trials with Gregory Bales

Recent clinical trials with Gregory Bales

Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)

Gregory T. Bales received $76,735 in industry payments from 2016 to 2024

CMS Open Payments shows 120 general payments to Gregory Bales from 8 drug and device companies from 2016 to 2024. Speaker and faculty fees make up the largest share, 89% of the total. Boston Scientific Corporation paid the most, $45,761.

General payments to Gregory Bales by program year, 2016 to 2024

General payments to Gregory Bales by kind, 2016 to 2024

$76.7Kin total
  • Speaker and faculty fees$68,18989%
  • Food and beverage$3,6915%
  • Consulting fees$2,4003%
  • Travel and lodging$1,9553%
  • Education$5001%

Companies that paid Gregory Bales the most, 2016 to 2024

Share is of all general payments to this clinician.

See all payments to Gregory Bales

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Gregory T. Bales has 6 awards and honors on record

Dmand AI lists 6 awards for Gregory Bales, most recently America's Top Doctors in 2014.

Awards and honors for Gregory Bales

  1. 2014
    • America's Top Doctors
    • Chicago Magazine: Top Doctors
  2. 2013
    • CMS Stage 1 EHR
  3. 2011
    • Chicago Magazine - Women's Health
  4. Undated
    • Checkbook Top Doc
    • Super Doc

Source: Dmand AI Professional Profile Data

Gregory T. Bales graduated from Tufts University School Of Medicine

Gregory Bales graduated from Tufts University School Of Medicine in 1990.

  1. Medical schoolTufts University School Of Medicine
  2. Board certified in female pelvic medicine and reconstructive surgeryAmerican Board of Urology
  3. Board certified in urologyAmerican Board of Urology

Source: Dmand AI Professional Profile Data

Gregory T. Bales accepts plans from 10 insurance carriers

Gregory Bales is in network with 10 carriers, including Aetna, Blue Cross Blue Shield of Michigan and HCSC. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.

  • Aetna
  • Blue Cross Blue Shield of Michigan
  • HCSC
  • Humana
  • United Healthcare
  • Blue Cross Blue Shield of Massachusetts
  • Regence Health Plans
  • Blue Cross and Blue Shield of Kansas City
  • +2 more carriersWith a free account

Plan types Gregory Bales accepts, by number of carriers

  1. Medicare8
  2. PPO6
  3. HMO5
  4. POS5
  5. EPO2

Source: Dmand AI Insurance Network Data

Sources for Gregory T. Bales's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Clinical trials and co-investigatorsDmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Gregory T. Bales

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Gregory T. Bales' NPI number?

Gregory T. Bales' NPI number is 1184789919. It was assigned on December 22, 2006, and it is active in the NPI Registry.

What does Gregory T. Bales specialize in?

Gregory T. Bales is a urologist in Olympia Fields, Illinois. The primary specialty in the NPI Registry is Urology Physician (taxonomy code 208800000X).

Where does Gregory T. Bales practice?

Gregory Bales practices at 20201 Crawford Ave, Olympia Fields, IL 60461. Gregory Bales' primary practice is Prime Healthcare Olympia Fields in Olympia Fields, Illinois.

What is Gregory T. Bales' office phone number?

The practice phone on file for Gregory Bales is (708) 852-2953.

What is Gregory T. Bales' medical license number?

Gregory Bales holds Illinois license 036090610, one of the licenses on file in 3 states.

Which states has Gregory T. Bales been licensed in?

Dmand AI has state licenses on file for Gregory Bales in Illinois (1995 to 2026), Indiana (2000 to 2025) and Florida (2014 to 2016).

What medical group is Gregory T. Bales part of?

Gregory Bales is linked to UChicago Medicine Physicians.

Does Gregory T. Bales accept Medicare?

Yes. CMS data shows Gregory Bales billed Medicare for 276 services in 2024.

How many Medicare patients does Gregory T. Bales see?

CMS counts 199 Medicare patients who saw Gregory Bales in 2024, with an average age of 73.

Is Gregory T. Bales board certified?

Yes. Gregory Bales is board certified in female pelvic medicine and reconstructive surgery by the American Board of Urology.

Show 8 more questionsShow fewer questions

What services does Gregory T. Bales bill to Medicare?

In 2024, Gregory Bales' most billed Medicare services were office visit, new patient (99203), lab and pathology test (81003) and office visit, established patient (99213).

Where did Gregory T. Bales go to medical school?

Gregory Bales graduated from Tufts University School Of Medicine in 1990.

What drugs does Gregory T. Bales prescribe most?

In 2024 Medicare Part D data, Gregory Bales' most prescribed drugs by claims were Tamsulosin HCl, Trospium Chloride and Nitrofurantoin Mono-Macro.

Has Gregory T. Bales received payments from drug or device companies?

CMS Open Payments shows $76,735 in general payments to Gregory Bales from 8 companies from 2016 to 2024. The largest total came from Boston Scientific Corporation.

How long has Gregory T. Bales been practicing?

Gregory Bales graduated from medical school in 1990, 36 years ago.

Does Gregory T. Bales do research?

Dmand AI links 69 publications to Gregory Bales, published from 2007 to 2017. Gregory Bales has worked on 1 clinical trial.

Who does Gregory T. Bales publish with?

Gregory Bales' most frequent co-authors are Joshua Aaron Cohn, MD (7 shared papers), Sarah F. Faris (6 shared papers) and Desiderio Avila, MD (3 shared papers).

What insurance does Gregory T. Bales accept?

Gregory Bales is in network with 10 carriers, including Aetna, Blue Cross Blue Shield of Michigan and HCSC. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.

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