Dr. James D. Cassat, MD
- Medicare services, 2017
- 62
- Part D claims, 2017
- 26
- Hospital affiliations
- 1
- Industry payments
- $53
- Medical group
- 1
- Practice address
- 901 East 5th Street, Washington, MO 63090
- Practice phone
- Call (636) 239-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Cassat'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. James D. Cassat is a general surgeon in Washington, Missouri
Dr. Cassat practices at Mercy Hospital Washington in Washington, Missouri, part of Mercy.
Dr. Cassat's NPI, 1467498220, was assigned on June 21, 2006. Dr. Cassat graduated from Sanford School of Medicine of University of South Dakota in 1977. Dr. Cassat holds Missouri license R3E56.
- NPI
- 1467498220NPI Registry (opens in a new tab)
- NPI enumeration date
- June 21, 2006
- NPI status
- Active
- Practice phone
- (636) 239-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 75
- Medical school graduation
- 1977
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. James D. Cassat practices at Mercy Hospital Washington in Washington, Missouri
Dr. Cassat's primary practice is Mercy Hospital Washington, at 901 East 5th Street, Washington, MO 63090 in Franklin County. The practice phone is (636) 239-8000.
- Mercy Hospital Washington901 East 5th Street, Washington, MO 63090 · Franklin CountyPhone(636) 239-8000
Source: Dmand AI Affiliation Data
Dr. James D. Cassat is affiliated with 2 sites of care and 1 medical group
Dr. Cassat's primary practice is Mercy Hospital Washington in Washington, Missouri, part of Mercy. The medical group on file is Mercy Clinic Surgical Specialists. Dmand AI also links Dr. Cassat to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. James D. Cassat's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Cassat practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercy Hospital Washington | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across Mercy and 6.2K+ hospitals, with verified contacts in the same login.
Dr. James D. Cassat is one of 593 general surgeons in Missouri
Surgery is Dr. Cassat's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Cassat is licensed in Missouri.
Specialties and state licenses
- Surgery, MissouriPrimary
General surgeons near Dr. Cassat
Counts of general surgeons 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. James D. Cassat billed Medicare for 62 services in 2017
CMS data shows 62 Medicare services from Dr. Cassat across 2 procedure codes in 2017, all of them office visits. Medicare paid $4,300 for them. Every service was in an office.
Dr. Cassat's Medicare services by type, 2016 to 2017
- 2016
- 2017
- Office and hospital visits
- 2016: 1082017: 6243%
Dr. Cassat compared with the Missouri median for general surgeons, 2017
- Dr. Cassat
- Missouri median
- Medicare services
- 62vs 16963% below
- Part D claims
- 26vs 4137% below
Medians across 570 general surgeons in Missouri with Dmand AI profiles that report each measure.
Dr. Cassat'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Cassat and other general surgeons in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. James D. Cassat's patients have a median age of 70
Across all payers, Dmand AI patient panel data puts Dr. Cassat's median patient age at 70, with 100% women.
Dr. Cassat's 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
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. James D. Cassat wrote 26 Medicare Part D claims in 2017
In 2017, Dr. Cassat wrote 26 Medicare Part D claims. They cover 1 drug, with $127 in total drug cost. In 2016, CMS named 35 claims across 1 drug.
Dr. Cassat's most prescribed drugs by claims, 2017
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, 2016 to 2017
- 2016
- 2017
- Claims for drugs CMS names
- 2016: 352017: 2626%
Drugs named by CMS: 1 in 2017, 1 in 2016.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. James D. Cassat received $53 in industry payments from 2016 to 2018
CMS Open Payments shows 4 general payments to Dr. Cassat from 2 drug and device companies from 2016 to 2018. Food and beverage make up the largest share, 100% of the total. Smith & Nephew, Inc. paid the most, $37.
General payments to Dr. Cassat by program year, 2016 to 2018
Companies that paid Dr. Cassat the most, 2016 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. James D. Cassat graduated from Sanford School of Medicine of University of South Dakota
Dr. Cassat graduated from Sanford School of Medicine of University of South Dakota in 1977.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. James D. Cassat'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 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) |
| 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. James D. Cassat
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. James D. Cassat's NPI number?
Dr. James D. Cassat's NPI number is 1467498220. It was assigned on June 21, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. James D. Cassat?
Dr. James D. Cassat is a general surgeon in Washington, Missouri. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. James D. Cassat practice?
Dr. Cassat practices at 901 East 5th Street, Washington, MO 63090. Dr. Cassat's primary practice is Mercy Hospital Washington in Washington, Missouri, part of Mercy. Dmand AI also links Dr. Cassat to 1 group practice or clinic.
What is Dr. James D. Cassat's office phone number?
The practice phone on file for Dr. Cassat is (636) 239-8000.
What is Dr. James D. Cassat's medical license number?
Dr. Cassat holds Missouri license R3E56.
Which hospitals is Dr. James D. Cassat affiliated with?
Dr. Cassat practices at Mercy Hospital Washington in Washington, Missouri.
What medical group is Dr. James D. Cassat part of?
Dr. Cassat is linked to Mercy Clinic Surgical Specialists.
Does Dr. James D. Cassat accept Medicare?
Yes. CMS data shows Dr. Cassat billed Medicare for 62 services in 2017.
What services does Dr. James D. Cassat bill to Medicare?
In 2017, Dr. Cassat's most billed Medicare services were office visit, new patient (99204) and office visit, established patient (99212).
Where did Dr. James D. Cassat go to medical school?
Dr. Cassat graduated from Sanford School of Medicine of University of South Dakota in 1977.
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What drugs does Dr. James D. Cassat prescribe most?
In 2017 Medicare Part D data, Dr. Cassat's most prescribed drugs by claims were Hydrocodone-Acetaminophen.
Has Dr. James D. Cassat received payments from drug or device companies?
CMS Open Payments shows $53 in general payments to Dr. Cassat from 2 companies from 2016 to 2018. The largest total came from Smith & Nephew, Inc.
How long has Dr. James D. Cassat been practicing?
Dr. Cassat graduated from medical school in 1977, 49 years ago.
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