Dr. Robert G. Koss, MD
- Medicare services, 2020
- 157
- Part D claims, 2020
- 71
- Industry payments
- $3,370
- Affiliated sites
- 2
- Medical groups
- 2
- Practice address
- 1875 Dempster St Ste 580 Suite 580, Park Ridge, IL 60068
- Practice phone
- Call (847) 698-5500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Advocate Medical Group (dreyer) - Park Ridge (1875 Dempster St)
Multi-specialty group site · Park Ridge, Illinois
Find Dr. Koss' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Robert G. Koss is an OB-GYN in Park Ridge, Illinois
Dr. Koss practices at Advocate Medical Group (dreyer) - Park Ridge (1875 Dempster St) in Park Ridge, Illinois.
Dr. Koss' NPI, 1821078759, was assigned on January 18, 2006. Dr. Koss holds Illinois license 036.071750.
- NPI
- 1821078759NPI Registry (opens in a new tab)
- NPI enumeration date
- January 18, 2006
- NPI status
- Active
- Practice phone
- (847) 698-5500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Robert G. Koss practices at Advocate Medical Group (dreyer) - Park Ridge (1875 Dempster St) in Park Ridge, Illinois
Dr. Koss' primary practice is Advocate Medical Group (dreyer) - Park Ridge (1875 Dempster St), at 1875 Dempster St Ste 580 Suite 580, Park Ridge, IL 60068. The practice phone is (847) 698-5500.
- Advocate Medical Group (dreyer) - Park Ridge (1875 Dempster St)1875 Dempster St Ste 580 Suite 580, Park Ridge, IL 60068Phone(847) 698-5500
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Robert G. Koss is affiliated with 2 sites of care and 2 medical groups
Dr. Koss' primary practice is Advocate Medical Group (dreyer) - Park Ridge (1875 Dempster St) in Park Ridge, Illinois. The medical group on file is Dreyer Medical Clinic (Advocate Medical Group). Dmand AI also links Dr. Koss to 1 more group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Robert G. Koss' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Koss practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Advocate Medical Group (dreyer) - Park Ridge (1875 Dempster St) | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Robert G. Koss is one of 1,665 OB-GYNs in Illinois
Obstetrics and gynecology is Dr. Koss' primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Koss is licensed in Illinois.
Specialties and state licenses
- Obstetrics and gynecology, IllinoisPrimary
OB-GYNs near Dr. Koss
Counts of OB-GYNs with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Robert G. Koss billed Medicare for 157 services in 2020
CMS data shows 157 Medicare services from Dr. Koss across 6 procedure codes in 2020. Medicare paid $6,737 for them. Every service was in an office.
Dr. Koss' Medicare services by type, 2019 to 2020
- 2019
- 2020
- Other services
- 2019: 1942020: 11939%
- Office and hospital visits
- 2019: 1582020: 2584%
- Imaging
- 2019: 602020: 1378%
Dr. Koss compared with the Illinois median for OB-GYNs, 2020
- Dr. Koss
- Illinois median
- Medicare services
- 157vs 483.3 times
- Part D claims
- 71vs 282.5 times
Medians across 1,360 OB-GYNs in Illinois with Dmand AI profiles that report each measure.
Dr. Koss' most billed Medicare procedure codes, 2020
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Koss?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Koss and other OB-GYNs in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Robert G. Koss' patients have a median age of 55
Across all payers, Dmand AI patient panel data puts Dr. Koss' median patient age at 55, with 98% women.
Dr. Koss' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women98%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Robert G. Koss wrote 71 Medicare Part D claims in 2020
In 2020, Dr. Koss wrote 71 Medicare Part D claims. They cover 5 drugs, with $6,543 in total drug cost. In 2019, CMS named 93 claims across 5 drugs.
Dr. Koss' most prescribed drugs by claims, 2020
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 932020: 7124%
Drugs named by CMS: 5 in 2020, 5 in 2019.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Robert G. Koss received $3,370 in industry payments from 2016 to 2020
CMS Open Payments shows 53 general payments to Dr. Koss from 13 drug and device companies from 2016 to 2020. Consulting fees make up the largest share, 74% of the total. DySIS Medical, Inc. paid the most, $2,500.
General payments to Dr. Koss by program year, 2016 to 2020
General payments to Dr. Koss by kind, 2016 to 2020
- Consulting fees$2,50074%
- Food and beverage$85325%
- Education$171%
Companies that paid Dr. Koss the most, 2016 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Robert G. Koss's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Robert G. Koss
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Robert G. Koss' NPI number?
Dr. Robert G. Koss' NPI number is 1821078759. It was assigned on January 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert G. Koss?
Dr. Robert G. Koss is an OB-GYN in Park Ridge, Illinois. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Robert G. Koss practice?
Dr. Koss practices at 1875 Dempster St Ste 580 Suite 580, Park Ridge, IL 60068. Dr. Koss' primary practice is Advocate Medical Group (dreyer) - Park Ridge (1875 Dempster St) in Park Ridge, Illinois. Dmand AI also links Dr. Koss to 1 group practice or clinic and 1 medical group.
What is Dr. Robert G. Koss' office phone number?
The practice phone on file for Dr. Koss is (847) 698-5500.
What is Dr. Robert G. Koss' medical license number?
Dr. Koss holds Illinois license 036.071750.
What medical group is Dr. Robert G. Koss part of?
Dr. Koss is linked to Dreyer Medical Clinic (Advocate Medical Group). Dmand AI links Dr. Koss to 1 more medical group.
Does Dr. Robert G. Koss accept Medicare?
Yes. CMS data shows Dr. Koss billed Medicare for 157 services in 2020.
What services does Dr. Robert G. Koss bill to Medicare?
In 2020, Dr. Koss' most billed Medicare services were medicare service (G0101), medicare temporary code (Q0091) and medicare service (G0328).
What drugs does Dr. Robert G. Koss prescribe most?
In 2020 Medicare Part D data, Dr. Koss' most prescribed drugs by claims were Hydrocortisone, Premarin and Estradiol.
Has Dr. Robert G. Koss received payments from drug or device companies?
CMS Open Payments shows $3,370 in general payments to Dr. Koss from 13 companies from 2016 to 2020. The largest total came from DySIS Medical, Inc.
How long has Dr. Robert G. Koss been practicing?
Dr. Koss' NPI was assigned in 2006.
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