Dr. Perry Swintz Williams, MD
- Medicare services, 2019
- 2,306
- Part D claims, 2019
- 23
- Hospital affiliations
- 1
- Industry payments
- $408
- State licenses
- 3
- Practice address
- 730 West Market Street, Lima, OH 45801
- Practice phone
- Call (419) 227-3361
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Williams' 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. Perry Swintz Williams is a radiation oncologist in Lima, Ohio
Dr. Williams practices at Mercy Health - St. Rita's Medical Center in Lima, Ohio, part of Bon Secours Mercy Health.
Dr. Williams' NPI, 1932177268, was assigned on March 11, 2006. Dr. Williams holds Ohio license 35125681.
- NPI
- 1932177268NPI Registry (opens in a new tab)
- NPI enumeration date
- March 11, 2006
- NPI status
- Active
- Practice phone
- (419) 227-3361
- 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. Perry Swintz Williams practices at Mercy Health - St. Rita's Medical Center in Lima, Ohio
Dr. Williams' primary practice is Mercy Health - St. Rita's Medical Center, at 730 West Market Street, Lima, OH 45801 in Allen County. The practice phone is (419) 227-3361.
- Mercy Health - St. Rita's Medical Center730 West Market Street, Lima, OH 45801 · Allen CountyPhone(419) 227-3361
Source: Dmand AI Affiliation Data
Dr. Perry Swintz Williams is affiliated with 1 site of care
Dr. Williams' primary practice is Mercy Health - St. Rita's Medical Center in Lima, Ohio, part of Bon Secours Mercy Health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Perry Swintz Williams' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williams practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercy Health - St. Rita's Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Bon Secours Mercy Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Perry Swintz Williams is one of 267 radiation oncologists in Ohio
Radiation oncology is Dr. Williams' primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dmand AI has Dr. Williams' licenses on file in 3 states: Ohio, New Jersey and New York.
Specialties and state licenses
- Radiation oncology, OhioPrimary
- New Jersey license
- New York license
Radiation oncologists near Dr. Williams
Counts of radiation oncologists 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. Perry Swintz Williams billed Medicare for 2,306 services in 2019
CMS data shows 2,306 Medicare services from Dr. Williams across 16 procedure codes in 2019. Medicare paid $207,707 for them.
Dr. Williams' Medicare services by type, 2018 to 2019
- 2018
- 2019
- Imaging
- 2018: 2,1802019: 1,44634%
- Other services
- 2018: 1,5782019: 75752%
- Office and hospital visits
- 2018: 1922019: 10346%
Where Dr. Williams' Medicare services took place, 2019
- In an office1,27455%
- In a facility1,03245%
Dr. Williams compared with the Ohio median for radiation oncologists, 2019
- Dr. Williams
- Ohio median
- Medicare services
- 2,306vs 1,1202.1 times
- Part D claims
- 23vs 3126% below
Medians across 262 radiation oncologists in Ohio with Dmand AI profiles that report each measure.
Dr. Williams' most billed Medicare procedure codes, 2019
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. Williams and other radiation oncologists in Ohio.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Perry Swintz Williams' patients have a median age of 71
Across all payers, Dmand AI patient panel data puts Dr. Williams' median patient age at 71, with 0% women.
Dr. Williams' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
Dr. Perry Swintz Williams wrote 23 Medicare Part D claims in 2019
In 2019, Dr. Williams wrote 23 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $387 in total drug cost. In 2018, CMS named 34 claims across 2 drugs.
Dr. Williams' most prescribed drugs by claims, 2019
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, 2018 to 2019
- 2018
- 2019
- Claims for drugs CMS names
- 2018: 342019: 2332%
Drugs named by CMS: 1 in 2019, 2 in 2018.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Perry Swintz Williams received $408 in industry payments from 2017 to 2019
CMS Open Payments shows 6 general payments to Dr. Williams from 3 drug and device companies from 2017 to 2019. Food and beverage make up the largest share, 100% of the total. IsoRay, Inc paid the most, $299.
General payments to Dr. Williams by program year, 2017 to 2019
Companies that paid Dr. Williams the most, 2017 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Perry Swintz Williams'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) |
| 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. Perry Swintz Williams
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. Perry Swintz Williams' NPI number?
Dr. Perry Swintz Williams' NPI number is 1932177268. It was assigned on March 11, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Perry Swintz Williams?
Dr. Perry Swintz Williams is a radiation oncologist in Lima, Ohio. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).
Where does Dr. Perry Swintz Williams practice?
Dr. Williams practices at 730 West Market Street, Lima, OH 45801. Dr. Williams' primary practice is Mercy Health - St. Rita's Medical Center in Lima, Ohio, part of Bon Secours Mercy Health.
What is Dr. Perry Swintz Williams' office phone number?
The practice phone on file for Dr. Williams is (419) 227-3361.
What is Dr. Perry Swintz Williams' medical license number?
Dr. Williams holds Ohio license 35125681, one of the licenses on file in 3 states.
Which states has Dr. Perry Swintz Williams been licensed in?
Dmand AI has state licenses on file for Dr. Williams in Ohio, New Jersey and New York.
Which hospitals is Dr. Perry Swintz Williams affiliated with?
Dr. Williams practices at Mercy Health - St. Rita's Medical Center in Lima, Ohio.
Does Dr. Perry Swintz Williams accept Medicare?
Yes. CMS data shows Dr. Williams billed Medicare for 2,306 services in 2019.
What services does Dr. Perry Swintz Williams bill to Medicare?
In 2019, Dr. Williams' most billed Medicare services were radiation oncology (77014), medicare service (G6002) and radiation oncology (77300).
What drugs does Dr. Perry Swintz Williams prescribe most?
In 2019 Medicare Part D data, Dr. Williams' most prescribed drugs by claims were Tamsulosin HCl.
Has Dr. Perry Swintz Williams received payments from drug or device companies?
CMS Open Payments shows $408 in general payments to Dr. Williams from 3 companies from 2017 to 2019. The largest total came from IsoRay, Inc.
How long has Dr. Perry Swintz Williams been practicing?
Dr. Williams' NPI was assigned in 2006.
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