Cassandra Lynn Williamson, PA
- Medicare patients, 2024
- 228
- MIPS score, 2024
- 96
- Hospital affiliations
- 5
- Industry payments
- $829
- Medical groups
- 2
- Practice address
- 4340 Clyo Road, Suite 100, Dayton, OH 45459
- Practice phone
- Call (937) 293-4424
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Digestive Endoscopy Center - Dayton (Clyo Rd)
Surgery Center - Medicare-Certified · Dayton, Ohio
Find Cassandra Williamson'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.
Cassandra Lynn Williamson is a physician assistant in Dayton, Ohio
Cassandra Williamson practices at Digestive Endoscopy Center - Dayton (Clyo Rd) in Dayton, Ohio.
Cassandra Williamson's NPI, 1457565392, was assigned on May 10, 2007. Cassandra Williamson holds Ohio license 50.002157.
- NPI
- 1457565392NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4486893518
- NPI enumeration date
- May 10, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (937) 293-4424
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Cassandra Lynn Williamson practices at Digestive Endoscopy Center - Dayton (Clyo Rd) in Dayton, Ohio
Cassandra Williamson's primary practice is Digestive Endoscopy Center - Dayton (Clyo Rd), at 4340 Clyo Road, Suite 100, Dayton, OH 45459. The practice phone is (937) 293-4424.
- Digestive Endoscopy Center - Dayton (Clyo Rd)4340 Clyo Road, Suite 100, Dayton, OH 45459Phone(937) 293-4424
Source: Dmand AI Affiliation Data
Cassandra Lynn Williamson is affiliated with 7 sites of care and 2 medical groups
Cassandra Williamson's primary practice is Digestive Endoscopy Center - Dayton (Clyo Rd) in Dayton, Ohio. Cassandra Williamson is also affiliated with Miami Valley Hospital. The medical group on file is Premier Health Specialists. Dmand AI also links Cassandra Williamson to 4 more hospitals, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Cassandra Lynn Williamson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Cassandra Williamson practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Digestive Endoscopy Center - Dayton (Clyo Rd) | Available with a free account |
| +6 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Cassandra Lynn Williamson is one of 4,524 physician assistants in Ohio
Physician assistant is Cassandra Williamson's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Cassandra Williamson is licensed in Ohio.
Specialties and state licenses
- Physician assistant, OhioPrimary
Physician assistants near Cassandra Williamson
Counts of physician assistants 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
Cassandra Lynn Williamson treated 228 Medicare patients in 2024, average age 71
CMS counts 228 Medicare patients who saw Cassandra Williamson in 2024. The largest group is 65 to 74, with 140 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 8% are also on Medicaid. Their average risk score is 1.58, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Cassandra Williamson's median patient age at 63, with 55% women.
Cassandra Williamson's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Cassandra Williamson's Medicare patients by sex, 2024
- Women12655%
- Men10245%
Chronic conditions among Cassandra Williamson's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis46%
- Diabetes42%
- Ischemic heart disease29%
- Mood disorders28%
- Anxiety26%
- Depression26%
Share of Medicare patients with each condition. A patient can have several.
Cassandra Williamson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Cassandra Lynn Williamson scored 96 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 96 out of 100 for Cassandra Williamson for performance year 2024, reported as part of a group. Cassandra Williamson accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Cassandra Williamson's MIPS scores, performance year 2024
- 96of 100Final score
- 92.4of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
Cassandra Lynn Williamson received $829 in industry payments in 2025
CMS Open Payments shows 37 general payments to Cassandra Williamson from 12 drug and device companies in 2025. Food and beverage make up the largest share, 88% of the total. Abbvie Inc. paid the most, $221.
General payments to Cassandra Williamson by kind, 2025 to 2025
- Food and beverage$73088%
- Education$9912%
Companies that paid Cassandra Williamson the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Cassandra Lynn Williamson'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 patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - 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) |
| 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 Cassandra Lynn Williamson
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Cassandra Lynn Williamson's NPI number?
Cassandra Lynn Williamson's NPI number is 1457565392. It was assigned on May 10, 2007, and it is active in the NPI Registry.
What does Cassandra Lynn Williamson specialize in?
Cassandra Lynn Williamson is a physician assistant in Dayton, Ohio. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Cassandra Lynn Williamson practice?
Cassandra Williamson practices at 4340 Clyo Road, Suite 100, Dayton, OH 45459. Cassandra Williamson's primary practice is Digestive Endoscopy Center - Dayton (Clyo Rd) in Dayton, Ohio. Dmand AI also links Cassandra Williamson to 4 hospitals, 1 group practice or clinic and 1 medical group.
What is Cassandra Lynn Williamson's office phone number?
The practice phone on file for Cassandra Williamson is (937) 293-4424.
What is Cassandra Lynn Williamson's medical license number?
Cassandra Williamson holds Ohio license 50.002157.
Which hospitals is Cassandra Lynn Williamson affiliated with?
Cassandra Williamson is affiliated with Miami Valley Hospital. Dmand AI links Cassandra Williamson to 4 more hospitals.
What medical group is Cassandra Lynn Williamson part of?
Cassandra Williamson is linked to Premier Health Specialists. Dmand AI links Cassandra Williamson to 1 more medical group.
Does Cassandra Lynn Williamson accept Medicare?
Yes. CMS lists Cassandra Williamson as accepting Medicare assignment.
What is Cassandra Lynn Williamson's MIPS score?
Cassandra Williamson's MIPS final score for performance year 2024 is 96 out of 100, reported as part of a group.
How many Medicare patients does Cassandra Lynn Williamson see?
CMS counts 228 Medicare patients who saw Cassandra Williamson in 2024, with an average age of 71.
Has Cassandra Lynn Williamson received payments from drug or device companies?
CMS Open Payments shows $829 in general payments to Cassandra Williamson from 12 companies from 2025 to 2025. The largest total came from Abbvie Inc.
How long has Cassandra Lynn Williamson been practicing?
Cassandra Williamson graduated from medical school in 2004, 22 years ago.
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