Dr. Patrick Dennis Schaffer, DO
- Medicare services, 2024
- 345
- Medicare patients, 2024
- 149
- Part D claims, 2024
- 200
- MIPS score, 2024
- 74
- Hospital affiliations
- 5
- Practice address
- 285 E State St, Columbus, OH 43215
- Practice phone
- Call (614) 566-9718
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
OhioHealth
Columbus, Ohio
Find Dr. Schaffer's professional email, personal email and mobile number
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Dr. Patrick Dennis Schaffer is an internist in Columbus, Ohio
Dr. Schaffer practices at OhioHealth in Columbus, Ohio.
Dr. Schaffer's NPI, 1487117107, was assigned on April 9, 2019. Dr. Schaffer holds Ohio license 34.015449.
- NPI
- 1487117107NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5597092320
- NPI enumeration date
- April 9, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (614) 566-9718
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Patrick Dennis Schaffer practices at OhioHealth in Columbus, Ohio
Dr. Schaffer's primary practice is OhioHealth, at 285 E State St, Columbus, OH 43215 in Franklin County. The practice phone is (614) 566-9718.
- OhioHealth285 E State St, Columbus, OH 43215 · Franklin CountyPhone(614) 566-9718
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Patrick Dennis Schaffer is affiliated with 10 sites of care and 3 medical groups
Dr. Schaffer's primary practice is OhioHealth in Columbus, Ohio. Dr. Schaffer is also affiliated with OhioHealth Riverside Methodist Hospital. The medical group on file is OhioHealth Physician Group. Dmand AI also links Dr. Schaffer to 4 more hospitals, 2 dialysis centers, 2 group practices and clinics and 2 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Patrick Dennis Schaffer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Schaffer practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| OhioHealth | Available with a free account |
| +9 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Patrick Dennis Schaffer is one of 4,708 internists in Ohio
Internal medicine is Dr. Schaffer's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Schaffer is licensed in Ohio.
Specialties and state licenses
- Internal medicine, OhioPrimary
Internists near Dr. Schaffer
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. Patrick Dennis Schaffer billed Medicare for 345 services in 2024
CMS data shows 345 Medicare services from Dr. Schaffer across 7 procedure codes in 2024, for 149 Medicare patients. Medicare paid $34,982 for them.
Dr. Schaffer's Medicare services by type, 2024
- Office and hospital visits293
- Tests and treatments52
Where Dr. Schaffer's Medicare services took place, 2024
- In an office6419%
- In a facility28181%
Dr. Schaffer compared with the Ohio median for internists, 2024
- Dr. Schaffer
- Ohio median
- Medicare services
- 345vs 48729% below
- Medicare patients
- 149vs 19222% below
- Part D claims
- 95vs 29468% below
Medians across 4,703 internists in Ohio with Dmand AI profiles that report each measure.
Dr. Schaffer'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Patrick Dennis Schaffer treated 149 Medicare patients in 2024, average age 71
CMS counts 149 Medicare patients who saw Dr. Schaffer in 2024. The largest group is 65 to 74, with 53 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 19% are also on Medicaid. Their average risk score is 4.03, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Schaffer's median patient age at 68, with 47% women.
Dr. Schaffer's Medicare patients by age, 2024
Dr. Schaffer's Medicare patients by sex, 2024
- Women6141%
- Men8859%
Chronic conditions among Dr. Schaffer's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes64%
- Heart failure58%
- Ischemic heart disease56%
- Arthritis54%
- Atrial fibrillation42%
Share of Medicare patients with each condition. A patient can have several.
Dr. Schaffer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women47%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Patrick Dennis Schaffer wrote 200 Medicare Part D claims in 2024
In 2024, Dr. Schaffer wrote 200 Medicare Part D claims for 63 patients. 91% of them were for generic drugs. CMS names the drug for 95 of them, across 4 drugs with 11 or more claims each, at $310 in total drug cost. In 2022, CMS named 65 claims across 4 drugs.
Dr. Schaffer's Part D claims by kind of drug, 2024
- Generic182 claims91%
- Brand-name18 claims9%
Dr. Schaffer'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.
Part D claims for drugs CMS names, 2022 to 2024
- 2022
- 2024
- Claims for drugs CMS names
- 2022: 652024: 9546%
Drugs named by CMS: 4 in 2024, 4 in 2022.
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. Patrick Dennis Schaffer scored 74 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 74 out of 100 for Dr. Schaffer for performance year 2024, reported as part of a group. Dr. Schaffer accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Schaffer's MIPS scores, performance year 2024
- 74of 100Final score
- 43.6of 100Quality
- 100of 100Promoting Interoperability
- 20of 100Improvement Activities
- 79of 100Cost
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
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Dr. Patrick Dennis Schaffer received $869 in industry payments from 2022 to 2025
CMS Open Payments shows 26 general payments to Dr. Schaffer from 9 drug and device companies from 2022 to 2025. Food and beverage make up the largest share, 100% of the total. NxStage Medical, Inc. paid the most, $261.
General payments to Dr. Schaffer by program year, 2022 to 2025
Companies that paid Dr. Schaffer the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Patrick Dennis Schaffer's profile data
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Patrick Dennis Schaffer
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What is Dr. Patrick Dennis Schaffer's NPI number?
Dr. Patrick Dennis Schaffer's NPI number is 1487117107. It was assigned on April 9, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Patrick Dennis Schaffer?
Dr. Patrick Dennis Schaffer is an internist in Columbus, Ohio. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Patrick Dennis Schaffer practice?
Dr. Schaffer practices at 285 E State St, Columbus, OH 43215. Dr. Schaffer's primary practice is OhioHealth in Columbus, Ohio. Dmand AI also links Dr. Schaffer to 4 hospitals, 2 dialysis centers, 2 group practices and clinics and 2 medical groups.
What is Dr. Patrick Dennis Schaffer's office phone number?
The practice phone on file for Dr. Schaffer is (614) 566-9718.
What is Dr. Patrick Dennis Schaffer's medical license number?
Dr. Schaffer holds Ohio license 34.015449.
Which hospitals is Dr. Patrick Dennis Schaffer affiliated with?
Dr. Schaffer is affiliated with OhioHealth Riverside Methodist Hospital. Dmand AI links Dr. Schaffer to 4 more hospitals.
What medical group is Dr. Patrick Dennis Schaffer part of?
Dr. Schaffer is linked to OhioHealth Physician Group. Dmand AI links Dr. Schaffer to 2 more medical groups.
Does Dr. Patrick Dennis Schaffer accept Medicare?
Yes. CMS data shows Dr. Schaffer billed Medicare for 345 services in 2024, and Dr. Schaffer accepts Medicare assignment.
What is Dr. Patrick Dennis Schaffer's MIPS score?
Dr. Schaffer's MIPS final score for performance year 2024 is 74 out of 100, reported as part of a group.
How many Medicare patients does Dr. Patrick Dennis Schaffer see?
CMS counts 149 Medicare patients who saw Dr. Schaffer in 2024, with an average age of 71.
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What services does Dr. Patrick Dennis Schaffer bill to Medicare?
In 2024, Dr. Schaffer's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and hospital inpatient care (99223).
What drugs does Dr. Patrick Dennis Schaffer prescribe most?
In 2024 Medicare Part D data, Dr. Schaffer's most prescribed drugs by claims were Lisinopril, Furosemide and Carvedilol.
Has Dr. Patrick Dennis Schaffer received payments from drug or device companies?
CMS Open Payments shows $869 in general payments to Dr. Schaffer from 9 companies from 2022 to 2025. The largest total came from NxStage Medical, Inc.
How long has Dr. Patrick Dennis Schaffer been practicing?
Dr. Schaffer graduated from medical school in 2019, 7 years ago.
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