Dr. Leonard David Gaum, MD
- Medicare services, 2017
- 400
- Part D claims, 2018
- 56
- Industry payments
- $1,905
- Affiliated sites
- 1
- State license
- 1
- Practice address
- 621 S New Ballas Rd, Saint Louis, MO 63141-8232
- Practice phone
- Call (314) 569-1750
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Urology of St. Louis
Physician office · Saint Louis, Missouri
Find Dr. Gaum's 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. Leonard David Gaum is a urologist in Missouri
Dr. Gaum practices at Urology of St. Louis in Saint Louis, Missouri.
Dr. Gaum's NPI, 1245288760, was assigned on May 5, 2006. Dr. Gaum holds Missouri license R4A96.
- NPI
- 1245288760NPI Registry (opens in a new tab)
- NPI enumeration date
- May 5, 2006
- NPI status
- Active
- Practice phone
- (314) 569-1750
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Leonard David Gaum practices at Urology of St. Louis in Saint Louis, Missouri
Dr. Gaum's primary practice is Urology of St. Louis, at 621 S New Ballas Rd, Saint Louis, MO 63141-8232. The practice phone is (314) 569-1750.
- Urology of St. Louis621 S New Ballas Rd, Saint Louis, MO 63141-8232Phone(314) 569-1750
Source: Dmand AI Affiliation Data
Dr. Leonard David Gaum is affiliated with 1 site of care
Dr. Gaum's primary practice is Urology of St. Louis in Saint Louis, Missouri.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Leonard David Gaum's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gaum practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Urology of St. Louis | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Leonard David Gaum is one of 246 urologists in Missouri
Urology is Dr. Gaum's primary specialty in the NPI Registry, under taxonomy code 208800000X. Dr. Gaum is licensed in Missouri.
Specialties and state licenses
- Urology, MissouriPrimary
Urologists near Dr. Gaum
Counts of urologists 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. Leonard David Gaum billed Medicare for 400 services in 2017
CMS data shows 400 Medicare services from Dr. Gaum across 7 procedure codes in 2017. Medicare paid $17,321 for them. Every service was in an office.
Dr. Gaum's Medicare services by type, 2016 to 2017
- 2016
- 2017
- Office and hospital visits
- 2016: 6822017: 25163%
- Lab and pathology
- 2016: 1382017: 10028%
- Surgery
- 2016: 2032017: 4976%
Dr. Gaum compared with the Missouri median for urologists, 2017
- Dr. Gaum
- Missouri median
- Medicare services
- 400vs 1,53474% below
- Part D claims
- 56vs 79993% below
Medians across 252 urologists in Missouri with Dmand AI profiles that report each measure.
Dr. Gaum's most billed Medicare procedure codes, 2017
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. Gaum?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Gaum and other urologists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Leonard David Gaum's patients have a median age of 75
Across all payers, Dmand AI patient panel data puts Dr. Gaum's median patient age at 75, with 27% women.
Dr. Gaum's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women27%
- Men73%
Source: Dmand AI Patient Panel Data
Dr. Leonard David Gaum wrote 56 Medicare Part D claims in 2018
In 2018, Dr. Gaum wrote 56 Medicare Part D claims. Every claim was for a generic drug. They cover 2 drugs, with $1,303 in total drug cost. In 2017, CMS named 1,105 claims across 19 drugs.
Dr. Gaum's most prescribed drugs by claims, 2018
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, 2017 to 2018
- 2017
- 2018
- Claims for drugs CMS names
- 2017: 1,1052018: 5695%
Drugs named by CMS: 2 in 2018, 19 in 2017.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Leonard David Gaum received $1,905 in industry payments from 2016 to 2022
CMS Open Payments shows 96 general payments to Dr. Gaum from 24 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 97% of the total. Astellas Pharma US Inc paid the most, $557.
General payments to Dr. Gaum by program year, 2016 to 2022
General payments to Dr. Gaum by kind, 2016 to 2022
- Food and beverage$1,85597%
- Education$503%
Companies that paid Dr. Gaum the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Leonard David Gaum'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 Data |
| Primary practice, affiliations and health system | Dmand 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 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. Leonard David Gaum
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. Leonard David Gaum's NPI number?
Dr. Leonard David Gaum's NPI number is 1245288760. It was assigned on May 5, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Leonard David Gaum?
Dr. Leonard David Gaum is a urologist in Missouri. The primary specialty in the NPI Registry is Urology Physician (taxonomy code 208800000X).
Where does Dr. Leonard David Gaum practice?
Dr. Gaum practices at 621 S New Ballas Rd, Saint Louis, MO 63141-8232. Dr. Gaum's primary practice is Urology of St. Louis in Saint Louis, Missouri.
What is Dr. Leonard David Gaum's office phone number?
The practice phone on file for Dr. Gaum is (314) 569-1750.
What is Dr. Leonard David Gaum's medical license number?
Dr. Gaum holds Missouri license R4A96.
Does Dr. Leonard David Gaum accept Medicare?
Yes. CMS data shows Dr. Gaum billed Medicare for 400 services in 2017.
What services does Dr. Leonard David Gaum bill to Medicare?
In 2017, Dr. Gaum's most billed Medicare services were lab and pathology test (81002), office visit, established patient (99212) and office visit, established patient (99213).
What drugs does Dr. Leonard David Gaum prescribe most?
In 2018 Medicare Part D data, Dr. Gaum's most prescribed drugs by claims were Tamsulosin HCl and Finasteride.
Has Dr. Leonard David Gaum received payments from drug or device companies?
CMS Open Payments shows $1,905 in general payments to Dr. Gaum from 24 companies from 2016 to 2022. The largest total came from Astellas Pharma US Inc.
How long has Dr. Leonard David Gaum been practicing?
Dr. Gaum's NPI was assigned in 2006.
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