Dr. Patrick Dennis Schaffer , DO
Internal Medicine โข Dublin, OH
6905 Hospital Dr Ste 130
Dublin, OH 430169600
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. Patrick Schaffer is listed in NPPES under Internal Medicine.
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NPI assigned on April 9, 2019; this date does not establish years in practice.
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Published CMS data list 345 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99232 โ Subsequent hospital care with moderate levelof medical decision making: 155 service units.
- 99233 โ Subsequent hospital care with moderate levelof medical decision making: 58 service units.
- 99223 โ Initial hospital care with moderate level of medical decision making: 50 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 7 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 95 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Lisinopril โ 36 prescription fills, including refills.
- Furosemide โ 34 prescription fills, including refills.
- Carvedilol โ 13 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 4 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 65% of clinicians listed under Internal Medicine in Dublin, OH (2024, 36 clinicians with data). Median for this group: 570. Middle half: 325 to 974.
Fewer Medicare Part B services than 65% of clinicians listed under Internal Medicine in Ohio (2024, 3,145 clinicians with data). Median for this group: 574. Middle half: 262 to 1,043.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part D prescriptions went from 86 in 2021 to 95 in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2021โ2024.
Practice Location & Contact Primary Location
6905 Hospital Dr Ste 130
Dublin, OH 430169600
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Riverside Nephrology Associates Inc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
2019
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
149 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $43,844 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
Paid by Medicare
About $34,982 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
30-day fills
165 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$310 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $88.78 across 4 records.
By nature of payment
- Food and Beverage: $88.78 across 4 records.
Reporting-company totals
- Novo Nordisk Inc: $43.06 across 2 records.
- Bayer Healthcare Pharmaceuticals Inc.: $26.97 across 1 record.
- Ardelyx, Inc.: $18.75 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
7 years (graduated 2019)
CMS Doctors and Clinicians data list 2019 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2019
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Schaffer has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Schaffer as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Dublin and Ohio
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 65% of clinicians listed under Internal Medicine in Dublin, OH (2024, 36 clinicians with data). Median for this group: 570. Middle half: 325 to 974.
Fewer Medicare Part B services than 65% of clinicians listed under Internal Medicine in Ohio (2024, 3,145 clinicians with data). Median for this group: 574. Middle half: 262 to 1,043.
Medicare-allowed amount
Close to the middle for clinicians listed under Internal Medicine in Dublin, OH (2024, 36 clinicians with data). Median for this group: $41,906. Middle half: $20,846 to $62,296.
Close to the middle for clinicians listed under Internal Medicine in Ohio (2024, 3,145 clinicians with data). Median for this group: $50,782. Middle half: $23,884 to $83,638.
Paid by Medicare
A higher Medicare payment amount than 60% of clinicians listed under Internal Medicine in Dublin, OH (2024, 36 clinicians with data). Median for this group: $28,540. Middle half: $16,165 to $47,277.
Close to the middle for clinicians listed under Internal Medicine in Ohio (2024, 3,145 clinicians with data). Median for this group: $37,953. Middle half: $17,413 to $63,670.
Medicare Part D prescriptions
Fewer Part D prescriptions than 80% of clinicians listed under Internal Medicine in Dublin, OH (2024, 35 clinicians with data). Median for this group: 1,833. Middle half: 732 to 3,191.
Fewer Part D prescriptions than 75% of clinicians listed under Internal Medicine in Ohio (2024, 3,362 clinicians with data). Median for this group: 883. Middle half: 119 to 5,445.
Part D drug cost
A lower Part D drug cost than 90% of clinicians listed under Internal Medicine in Dublin, OH (2024, 35 clinicians with data). Median for this group: $121,247. Middle half: $31,808 to $228,132.
A lower Part D drug cost than 85% of clinicians listed under Internal Medicine in Ohio (2024, 3,362 clinicians with data). Median for this group: $79,160. Middle half: $4,027 to $440,452.
47 active clinicians are listed under Internal Medicine with a practice address in Dublin, OH (5,283 in Ohio).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Dublin
46.8% of these 47 clinicians have the CMS telehealth indicator.
70.2% of these 47 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
CMS data for Medicare Part B services are available for 2024 only.
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Medicare-allowed amount
CMS data for Medicare-allowed amount are available for 2024 only.
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Paid by Medicare
CMS data for Medicare payment amount are available for 2024 only.
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 10% from 86 in 2021 to 95 in 2024.
- 2021: 86
- 2022: 65
- 2024: 95
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30-day fills
30-day fills increased 87% from 88 in 2021 to 165 in 2024.
- 2021: 88
- 2022: 68
- 2024: 165
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Part D drug cost
Part D drug cost decreased 90% from $2,959 in 2021 to $310 in 2024.
- 2021: $2,959
- 2022: $430
- 2024: $310
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $82.26 in 2022 to $88.78 in 2025.
- 2022: $82.26
- 2023: $549.99
- 2024: $147.59
- 2025: $88.78
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 โ December 31, 2025): fewer than 11 records totaling $88.78.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
|
Ozempic | General | $29.00 |
| Bayer Healthcare Pharmaceuticals Inc. |
Food and Beverage
In-kind items and services
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Kerendia | General | $26.97 |
| Ardelyx, Inc. |
Food and Beverage
In-kind items and services
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IBSRELA | General | $18.75 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
|
Ozempic | General | $14.06 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99232
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
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155 | 65 | $110.00 | $75.40 |
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99233
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes
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58 | 37 | $156.00 | $113.44 |
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99223
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
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50 | 48 | $303.00 | $165.62 |
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90960
Dialysis services, 4 or more physician visits per month (20 years or older)
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34 | 14 | $500.00 | $336.75 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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19 | 16 | $190.00 | $121.79 |
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90935
Hemodialysis procedure with physician evaluation
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18 | 13 | $150.00 | $67.75 |
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99205
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more
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11 | 11 | $325.00 | $210.34 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Lisinopril | Lisinopril | 36 | 1,845 | $71.41 | 13 |
| Furosemide | Furosemide | 34 | 1,740 | $108.91 | 15 |
| Carvedilol | Carvedilol | 13 | 690 | $69.52 | โ |
| Losartan Potassium | Losartan Potassium | 12 | 660 | $60.53 | โ |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2021-11-29NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
NUCC Taxonomy Code: 390200000X
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20211117001590
OH
5597092320
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Riverside Nephrology Associates Inc
929 Jasonway Ave, Columbus, OH 432142330
Phone: 6145382250
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Physician Assistant
Physician Assistant (Certified)
Nurse Practitioner - Family
Certified Nurse Practitioner
Nurse Practitioner - Family
Certified Nurse Practitioner
Nurse Practitioner
Certified Nurse Practitioner
Physician Assistant
Physician Assistant (Certified)
Physician Assistant
Physician Assistant (Certified)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 6905 HOSPITAL DR STE 130, DUBLIN, OH 430169600 (Tel: 6149230300)
Registered at PO BOX 7527, DUBLIN, OH 430170727 (Tel: 4195202495)
NPI status registered as active in NPPES database
Registered at 50 OLD VILLAGE RD, COLUMBUS, OH 432281583 (Tel: 6145441976)
Registered at 50 OLD VILLAGE RD, COLUMBUS, OH 432281583 (Tel: 6145441976)
Recorded as PATRICK SCHAFFER, DO
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine Providers in Dublin
- Dr. Aruna Suresh, MD
- Dr. Piotr Kloda, MD
- Dr. Beena Ijaz, MD
- Dr. Kruti Patel, MD
- Dr. Michael Conaway, MD
- Dr. Laura Wolery, MD
Mailing Address
Po Box 7527
Dublin, OH 430170727
Phone: 4195202495