Dr. Ian Michael Cassaday, DO
- Medicare services, 2024
- 585
- Medicare patients, 2024
- 276
- Part D claims, 2024
- 496
- MIPS score, 2024
- 86
- Hospital affiliations
- 2
- Practice address
- 1102 W Macarthur, Shawnee, OK 74801
- Practice phone
- Call (405) 273-2270
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Cassaday's professional email, personal email and mobile number
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Dr. Ian Michael Cassaday is a general surgeon in Shawnee, Oklahoma
Dr. Cassaday practices at SSM Health St. Anthony Hospital - Shawnee in Shawnee, Oklahoma, part of SSM Health Care.
Dr. Cassaday's NPI, 1669784658, was assigned on July 8, 2010. Dr. Cassaday holds Indiana license 02004013A.
- NPI
- 1669784658NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8022360916
- NPI enumeration date
- July 8, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (405) 273-2270
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ian Michael Cassaday practices at SSM Health St. Anthony Hospital - Shawnee in Shawnee, Oklahoma
Dr. Cassaday's primary practice is SSM Health St. Anthony Hospital - Shawnee, at 1102 W Macarthur, Shawnee, OK 74801 in Pottawatomie County. The practice phone is (405) 273-2270.
- SSM Health St. Anthony Hospital - Shawnee1102 W Macarthur, Shawnee, OK 74801 · Pottawatomie CountyPhone(405) 273-2270
Source: Dmand AI Affiliation Data
Dr. Ian Michael Cassaday is affiliated with 2 sites of care and 1 medical group
Dr. Cassaday's primary practice is SSM Health St. Anthony Hospital - Shawnee in Shawnee, Oklahoma, part of SSM Health Care. Dr. Cassaday is also affiliated with SSM Health St. Anthony Hospital - Oklahoma City. The medical group on file is SSM Health Medical Group.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ian Michael Cassaday's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Cassaday practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| SSM Health St. Anthony Hospital - Shawnee | 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. Ian Michael Cassaday is one of 316 general surgeons in Oklahoma
Surgery is Dr. Cassaday's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dmand AI has Dr. Cassaday's licenses on file in 3 states: Indiana, Colorado and Washington.
Specialties and state licenses
- Surgery, IndianaPrimary
- Colorado license
- Washington license
General surgeons near Dr. Cassaday
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. Ian Michael Cassaday billed Medicare for 585 services in 2024
CMS data shows 585 Medicare services from Dr. Cassaday across 18 procedure codes in 2024, for 276 Medicare patients. Medicare paid $58,785 for them.
Dr. Cassaday's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3592024: 3724%
- Surgery
- 2023: 1152024: 13618%
- Tests and treatments
- 2023: 282024: 3732%
- Imaging
- 2023: 262024: 248%
- Other services
- 2023: 112024: 1645%
Where Dr. Cassaday's Medicare services took place, 2024
- In an office376%
- In a facility54894%
Dr. Cassaday compared with the Oklahoma median for general surgeons, 2024
- Dr. Cassaday
- Oklahoma median
- Medicare services
- 585vs 1903.1 times
- Medicare patients
- 276vs 14590% above
- Part D claims
- 410vs 616.7 times
Medians across 312 general surgeons in Oklahoma with Dmand AI profiles that report each measure.
Dr. Cassaday'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. Cassaday and other general surgeons in Oklahoma.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ian Michael Cassaday treated 276 Medicare patients in 2024, average age 72
CMS counts 276 Medicare patients who saw Dr. Cassaday in 2024. The largest group is 65 to 74, with 134 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 11% are also on Medicaid. Their average risk score is 1.40, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Cassaday's median patient age at 69, with 70% women.
Dr. Cassaday's Medicare patients by age, 2024
Dr. Cassaday's Medicare patients by sex, 2024
- Women17563%
- Men10137%
Chronic conditions among Dr. Cassaday's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis50%
- Ischemic heart disease36%
- Diabetes35%
- Mood disorders30%
- Depression28%
- Cancer26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Cassaday's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women70%
- Men29%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ian Michael Cassaday wrote 496 Medicare Part D claims in 2024
In 2024, Dr. Cassaday wrote 496 Medicare Part D claims for 229 patients. 92% of them were for generic drugs. CMS names the drug for 410 of them, across 9 drugs with 11 or more claims each, at $6,722 in total drug cost. In 2023, CMS named 298 claims across 8 drugs.
Dr. Cassaday's Part D claims by kind of drug, 2024
- Generic457 claims92%
- Brand-name39 claims8%
Dr. Cassaday'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. Cassaday's Part D claims, 2024
- Opioids27%133 of 496 claims
- Antibiotics7%35 of 496 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: 2982024: 41038%
Drugs named by CMS: 9 in 2024, 8 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. Ian Michael Cassaday scored 86 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 86 out of 100 for Dr. Cassaday for performance year 2024, reported as part of a group. Dr. Cassaday accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 11 procedures of hernia repair - groin (open) by Dr. Cassaday, more than 89% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Cassaday's MIPS scores, performance year 2024
- 86of 100Final score
- 80.4of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 73of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Cassaday ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 64th percentile52 procedures
- Colonoscopy
- 57th percentile37 procedures
- Mastectomy
- 81st percentile23 procedures
- Hernia repair - groin (open)
- 89th percentile11 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)
Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Ian Michael Cassaday received $631 in industry payments from 2021 to 2025
CMS Open Payments shows 8 general payments to Dr. Cassaday from 5 drug and device companies from 2021 to 2025. Travel and lodging make up the largest share, 52% of the total. W. L. Gore & Associates, Inc. paid the most, $431.
General payments to Dr. Cassaday by program year, 2021 to 2025
General payments to Dr. Cassaday by kind, 2021 to 2025
- Travel and lodging$32652%
- Food and beverage$30548%
Companies that paid Dr. Cassaday the most, 2021 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Ian Michael Cassaday'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)Clinician Public Reporting: Overall MIPS Performance (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. Ian Michael Cassaday
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. Ian Michael Cassaday's NPI number?
Dr. Ian Michael Cassaday's NPI number is 1669784658. It was assigned on July 8, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Ian Michael Cassaday?
Dr. Ian Michael Cassaday is a general surgeon in Shawnee, Oklahoma. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Ian Michael Cassaday practice?
Dr. Cassaday practices at 1102 W Macarthur, Shawnee, OK 74801. Dr. Cassaday's primary practice is SSM Health St. Anthony Hospital - Shawnee in Shawnee, Oklahoma, part of SSM Health Care.
What is Dr. Ian Michael Cassaday's office phone number?
The practice phone on file for Dr. Cassaday is (405) 273-2270.
What is Dr. Ian Michael Cassaday's medical license number?
Dr. Cassaday holds Indiana license 02004013A, one of the licenses on file in 3 states.
Which states has Dr. Ian Michael Cassaday been licensed in?
Dmand AI has state licenses on file for Dr. Cassaday in Indiana, Colorado and Washington.
Which hospitals is Dr. Ian Michael Cassaday affiliated with?
Dr. Cassaday practices at SSM Health St. Anthony Hospital - Shawnee in Shawnee, Oklahoma. Dr. Cassaday is also affiliated with SSM Health St. Anthony Hospital - Oklahoma City.
What medical group is Dr. Ian Michael Cassaday part of?
Dr. Cassaday is linked to SSM Health Medical Group.
Does Dr. Ian Michael Cassaday accept Medicare?
Yes. CMS data shows Dr. Cassaday billed Medicare for 585 services in 2024, and Dr. Cassaday accepts Medicare assignment.
What is Dr. Ian Michael Cassaday's MIPS score?
Dr. Cassaday's MIPS final score for performance year 2024 is 86 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Ian Michael Cassaday see?
CMS counts 276 Medicare patients who saw Dr. Cassaday in 2024, with an average age of 72.
What services does Dr. Ian Michael Cassaday bill to Medicare?
In 2024, Dr. Cassaday's most billed Medicare services were office visit, new patient (99204), office visit, established patient (99214) and office visit, established patient (99213).
What drugs does Dr. Ian Michael Cassaday prescribe most?
In 2024 Medicare Part D data, Dr. Cassaday's most prescribed drugs by claims were Oxycodone HCl, Ibuprofen and Sod Sulf-Potass Sulf-Mag Sulf.
Has Dr. Ian Michael Cassaday received payments from drug or device companies?
CMS Open Payments shows $631 in general payments to Dr. Cassaday from 5 companies from 2021 to 2025. The largest total came from W. L. Gore & Associates, Inc.
How long has Dr. Ian Michael Cassaday been practicing?
Dr. Cassaday graduated from medical school in 2010, 16 years ago.
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