Dr. Kent Alexander Neil Cassmeyer, MD
- Medicare services, 2024
- 477
- Medicare patients, 2024
- 171
- Part D claims, 2024
- 8,631
- Hospital affiliations
- 3
- Industry payments
- $3,475
- Practice address
- 615 New Ballas Road, Saint Louis, MO 63141
- Practice phone
- Call (314) 251-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Cassmeyer's professional email, personal email and mobile number
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Dr. Kent Alexander Neil Cassmeyer is an internist in Saint Louis, Missouri
Dr. Cassmeyer practices at Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy.
Dr. Cassmeyer's NPI, 1417307505, was assigned on June 20, 2016. Dr. Cassmeyer holds Missouri license 2019024541.
- NPI
- 1417307505NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4587956461
- NPI enumeration date
- June 20, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (314) 251-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Kent Alexander Neil Cassmeyer practices at Mercy Hospital St. Louis in Saint Louis, Missouri
Dr. Cassmeyer's primary practice is Mercy Hospital St. Louis, at 615 New Ballas Road, Saint Louis, MO 63141 in St. Louis County. The practice phone is (314) 251-6000.
- Mercy Hospital St. Louis615 New Ballas Road, Saint Louis, MO 63141 · St. Louis CountyPhone(314) 251-6000
Source: Dmand AI Affiliation Data
Dr. Kent Alexander Neil Cassmeyer is affiliated with 6 sites of care and 1 medical group
Dr. Cassmeyer's primary practice is Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy. Dr. Cassmeyer is also affiliated with SSM Health Rehabilitation Hospital - Richmond Heights. The medical group on file is Mercy Clinic East Communities. Dmand AI also links Dr. Cassmeyer to 1 more hospital, 2 home health agencies and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Kent Alexander Neil Cassmeyer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Cassmeyer practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercy Hospital St. Louis | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Kent Alexander Neil Cassmeyer is one of 2,114 internists in Missouri
Internal medicine is Dr. Cassmeyer's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Cassmeyer is licensed in Missouri.
Specialties and state licenses
- Internal medicine, MissouriPrimary
Internists near Dr. Cassmeyer
Counts of internists 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. Kent Alexander Neil Cassmeyer billed Medicare for 477 services in 2024
CMS data shows 477 Medicare services from Dr. Cassmeyer across 9 procedure codes in 2024, for 171 Medicare patients. Medicare paid $41,661 for them. Every service was in an office.
Dr. Cassmeyer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4432024: 26341%
- Other services
- 2023: 1592024: 1749%
- Tests and treatments
- 2023: 382024: 405%
Dr. Cassmeyer compared with the Missouri median for internists, 2024
- Dr. Cassmeyer
- Missouri median
- Medicare services
- 477vs 53010% below
- Medicare patients
- 171vs 21119% below
- Part D claims
- 7,857vs 32524.2 times
Medians across 2,076 internists in Missouri with Dmand AI profiles that report each measure.
Dr. Cassmeyer's 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. Cassmeyer and other internists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Kent Alexander Neil Cassmeyer treated 171 Medicare patients in 2024, average age 73
CMS counts 171 Medicare patients who saw Dr. Cassmeyer in 2024. The largest group is 65 to 74, with 88 patients. 73% of them have high cholesterol, and 70% have high blood pressure. Their average risk score is 0.99, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Cassmeyer's median patient age at 66, with 44% women.
Dr. Cassmeyer's Medicare patients by age, 2024
Dr. Cassmeyer's Medicare patients by sex, 2024
- Women8047%
- Men9153%
Chronic conditions among Dr. Cassmeyer's Medicare patients, 2024
- High cholesterol73%
- High blood pressure70%
- Arthritis43%
- Chronic kidney disease30%
- Diabetes27%
- Ischemic heart disease22%
- Anxiety20%
- Mood disorders19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Cassmeyer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women44%
- Men56%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Kent Alexander Neil Cassmeyer wrote 8,631 Medicare Part D claims in 2024
In 2024, Dr. Cassmeyer wrote 8,631 Medicare Part D claims for 580 patients. 89% of them were for generic drugs. CMS names the drug for 7,857 of them, across 146 drugs with 11 or more claims each, at $494,959 in total drug cost. In 2023, CMS named 6,404 claims across 123 drugs.
Dr. Cassmeyer's Part D claims by kind of drug, 2024
- Generic7,651 claims89%
- Brand-name924 claims11%
- Other56 claims1%
Dr. Cassmeyer's 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. Cassmeyer's Part D claims, 2024
- Opioids3%292 of 8,631 claims
- Antibiotics2%163 of 8,631 claims
- Antipsychotics, patients 65 and over0%16 of 8,631 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: 6,4042024: 7,85723%
Drugs named by CMS: 146 in 2024, 123 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
Dr. Kent Alexander Neil Cassmeyer offers telehealth to Medicare patients
Dr. Cassmeyer accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Cassmeyer as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Kent Alexander Neil Cassmeyer received $3,475 in industry payments from 2019 to 2025
CMS Open Payments shows 176 general payments to Dr. Cassmeyer from 29 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $853.
General payments to Dr. Cassmeyer by program year, 2019 to 2025
Companies that paid Dr. Cassmeyer the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Kent Alexander Neil Cassmeyer'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 DataDmand AI Org Hierarchy 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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. Kent Alexander Neil Cassmeyer
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. Kent Alexander Neil Cassmeyer's NPI number?
Dr. Kent Alexander Neil Cassmeyer's NPI number is 1417307505. It was assigned on June 20, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Kent Alexander Neil Cassmeyer?
Dr. Kent Alexander Neil Cassmeyer is an internist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Kent Alexander Neil Cassmeyer practice?
Dr. Cassmeyer practices at 615 New Ballas Road, Saint Louis, MO 63141. Dr. Cassmeyer's primary practice is Mercy Hospital St. Louis in Saint Louis, Missouri, part of Mercy. Dmand AI also links Dr. Cassmeyer to 1 hospital, 2 home health agencies and 1 group practice or clinic.
What is Dr. Kent Alexander Neil Cassmeyer's office phone number?
The practice phone on file for Dr. Cassmeyer is (314) 251-6000.
What is Dr. Kent Alexander Neil Cassmeyer's medical license number?
Dr. Cassmeyer holds Missouri license 2019024541.
Which hospitals is Dr. Kent Alexander Neil Cassmeyer affiliated with?
Dr. Cassmeyer practices at Mercy Hospital St. Louis in Saint Louis, Missouri. Dr. Cassmeyer is also affiliated with SSM Health Rehabilitation Hospital - Richmond Heights. Dmand AI links Dr. Cassmeyer to 1 more hospital.
What medical group is Dr. Kent Alexander Neil Cassmeyer part of?
Dr. Cassmeyer is linked to Mercy Clinic East Communities.
Does Dr. Kent Alexander Neil Cassmeyer accept Medicare?
Yes. CMS data shows Dr. Cassmeyer billed Medicare for 477 services in 2024, and Dr. Cassmeyer accepts Medicare assignment.
Does Dr. Kent Alexander Neil Cassmeyer offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Cassmeyer as offering telehealth services.
How many Medicare patients does Dr. Kent Alexander Neil Cassmeyer see?
CMS counts 171 Medicare patients who saw Dr. Cassmeyer in 2024, with an average age of 73.
Show 4 more questionsShow fewer questions
What services does Dr. Kent Alexander Neil Cassmeyer bill to Medicare?
In 2024, Dr. Cassmeyer's most billed Medicare services were office visit, established patient (99214), medicare service (G0439) and office visit, established patient (99213).
What drugs does Dr. Kent Alexander Neil Cassmeyer prescribe most?
In 2024 Medicare Part D data, Dr. Cassmeyer's most prescribed drugs by claims were Atorvastatin Calcium, Lisinopril and Levothyroxine Sodium.
Has Dr. Kent Alexander Neil Cassmeyer received payments from drug or device companies?
CMS Open Payments shows $3,475 in general payments to Dr. Cassmeyer from 29 companies from 2019 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Kent Alexander Neil Cassmeyer been practicing?
Dr. Cassmeyer graduated from medical school in 2015, 11 years ago.
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