Dr. Kenneth L. Gerdes, MD
- Medicare services, 2024
- 372
- Medicare patients, 2024
- 137
- Part D claims, 2024
- 144
- Industry payments
- $182
- Affiliated sites
- 1
- Practice address
- 11125 Dunn Rd, Saint Louis, MO 63136
- Practice phone
- Call (618) 452-5858
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Granite City Dialysis Center
Saint Louis, Missouri
Find Dr. Gerdes' 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. Kenneth L. Gerdes is a nephrologist in Saint Louis, Missouri
Dr. Gerdes practices at Granite City Dialysis Center in Saint Louis, Missouri.
Dr. Gerdes' NPI, 1720020100, was assigned on June 12, 2006. Dr. Gerdes graduated from University of Arkansas College of Medicine in 1984. Dr. Gerdes holds Missouri license R6G82.
- NPI
- 1720020100NPI Registry (opens in a new tab)
- NPI enumeration date
- June 12, 2006
- NPI status
- Active
- Practice phone
- (618) 452-5858
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Kenneth L. Gerdes practices at Granite City Dialysis Center in Saint Louis, Missouri
Dr. Gerdes' primary practice is Granite City Dialysis Center, at 11125 Dunn Rd, Saint Louis, MO 63136 in Saint Louis County. The practice phone is (618) 452-5858.
- Granite City Dialysis Center11125 Dunn Rd, Saint Louis, MO 63136 · Saint Louis CountyPhone(618) 452-5858
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Kenneth L. Gerdes is affiliated with 2 sites of care
Dr. Gerdes' primary practice is Granite City Dialysis Center in Saint Louis, Missouri. Dmand AI also links Dr. Gerdes to 1 physician office, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Kenneth L. Gerdes' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gerdes practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Granite City Dialysis Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Kenneth L. Gerdes is one of 249 nephrologists in Missouri
Nephrology is Dr. Gerdes' primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dmand AI has Dr. Gerdes' licenses on file in 2 states: Missouri and Illinois.
Specialties and state licenses
- Nephrology, MissouriPrimary
- Illinois license
Nephrologists near Dr. Gerdes
Counts of nephrologists 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. Kenneth L. Gerdes billed Medicare for 372 services in 2024
CMS data shows 372 Medicare services from Dr. Gerdes across 4 procedure codes in 2024, for 137 Medicare patients. Medicare paid $25,587 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Gerdes' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3232024: 3395%
- Tests and treatments
- 2023: 852024: 3361%
Dr. Gerdes compared with the Missouri median for nephrologists, 2024
- Dr. Gerdes
- Missouri median
- Medicare services
- 372vs 85757% below
- Medicare patients
- 137vs 27149% below
- Part D claims
- 58vs 77993% below
Medians across 240 nephrologists in Missouri with Dmand AI profiles that report each measure.
Dr. Gerdes' 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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Gerdes and other nephrologists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Kenneth L. Gerdes treated 137 Medicare patients in 2024, average age 73
CMS counts 137 Medicare patients who saw Dr. Gerdes in 2024. The largest group is 75 to 84, with 41 patients. 75% of them have chronic kidney disease, and 75% have heart failure. 37% are also on Medicaid. Their average risk score is 4.58, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Gerdes' median patient age at 58, with 58% women.
Dr. Gerdes' Medicare patients by age, 2024
Dr. Gerdes' Medicare patients by sex, 2024
- Women6145%
- Men7655%
Chronic conditions among Dr. Gerdes' Medicare patients, 2024
- Chronic kidney disease75%
- Heart failure75%
- High blood pressure75%
- High cholesterol75%
- Diabetes68%
- Ischemic heart disease62%
- Arthritis59%
- Mood disorders53%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gerdes' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women58%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Kenneth L. Gerdes wrote 144 Medicare Part D claims in 2024
In 2024, Dr. Gerdes wrote 144 Medicare Part D claims for 23 patients. 99% of them were for generic drugs. CMS names the drug for 58 of them, across 3 drugs with 11 or more claims each, at $12,287 in total drug cost. In 2023, CMS named 300 claims across 14 drugs.
Dr. Gerdes' Part D claims by kind of drug, 2024
- Generic142 claims99%
- Brand-name and other2 claims1%
Dr. Gerdes' 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 Dr. Gerdes' Part D claims, 2024
- Opioids10%15 of 144 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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3002024: 5881%
Drugs named by CMS: 3 in 2024, 14 in 2023.
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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Dr. Kenneth L. Gerdes received $182 in industry payments from 2016 to 2019
CMS Open Payments shows 8 general payments to Dr. Gerdes from 3 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 58% of the total. Mallinckrodt LLC paid the most, $90.
General payments to Dr. Gerdes by program year, 2016 to 2019
General payments to Dr. Gerdes by kind, 2016 to 2019
- Food and beverage$10558%
- Education$7742%
Companies that paid Dr. Gerdes the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Kenneth L. Gerdes graduated from University of Arkansas College of Medicine
Dr. Gerdes graduated from University of Arkansas College of Medicine in 1984.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Kenneth L. Gerdes'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Kenneth L. Gerdes
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. Kenneth L. Gerdes' NPI number?
Dr. Kenneth L. Gerdes' NPI number is 1720020100. It was assigned on June 12, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Kenneth L. Gerdes?
Dr. Kenneth L. Gerdes is a nephrologist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Kenneth L. Gerdes practice?
Dr. Gerdes practices at 11125 Dunn Rd, Saint Louis, MO 63136. Dr. Gerdes' primary practice is Granite City Dialysis Center in Saint Louis, Missouri. Dmand AI also links Dr. Gerdes to 1 physician office.
What is Dr. Kenneth L. Gerdes' office phone number?
The practice phone on file for Dr. Gerdes is (618) 452-5858.
What is Dr. Kenneth L. Gerdes' medical license number?
Dr. Gerdes holds Missouri license R6G82, one of the licenses on file in 2 states.
Which states has Dr. Kenneth L. Gerdes been licensed in?
Dmand AI has state licenses on file for Dr. Gerdes in Missouri and Illinois.
Does Dr. Kenneth L. Gerdes accept Medicare?
Yes. CMS data shows Dr. Gerdes billed Medicare for 372 services in 2024.
How many Medicare patients does Dr. Kenneth L. Gerdes see?
CMS counts 137 Medicare patients who saw Dr. Gerdes in 2024, with an average age of 73.
What services does Dr. Kenneth L. Gerdes bill to Medicare?
In 2024, Dr. Gerdes' most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99222) and dialysis (90935).
Where did Dr. Kenneth L. Gerdes go to medical school?
Dr. Gerdes graduated from University of Arkansas College of Medicine in 1984.
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What drugs does Dr. Kenneth L. Gerdes prescribe most?
In 2024 Medicare Part D data, Dr. Gerdes' most prescribed drugs by claims were Sevelamer Carbonate, Midodrine HCl and Hydrocodone-Acetaminophen.
Has Dr. Kenneth L. Gerdes received payments from drug or device companies?
CMS Open Payments shows $182 in general payments to Dr. Gerdes from 3 companies from 2016 to 2019. The largest total came from Mallinckrodt LLC.
How long has Dr. Kenneth L. Gerdes been practicing?
Dr. Gerdes graduated from medical school in 1984, 42 years ago.
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