Mary C. Wirtz, MD
Internal Medicine Physician · Columbus, OH
Mary C. Wirtz, MD is an internal medicine physician with a practice address in Columbus, Ohio, and NPI 1780145995, issued on Mar 29, 2019. Check the license (Ohio 35.143347, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Mary C. Wirtz
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 35.143347 OH
Self-reported in NPPES; status is on the state search - Practice location
- 1800 Zollinger RD FL 3, Columbus, OH 43221
- Phone
- (614) 293-5123
- Enumerated
- Mar 29, 2019
- Record last updated
- Nov 18, 2025
- Fax
- (614) 293-4890
- Medicare enrollment
- Enrolled (PECOS I20220819001208); accepts Medicare assignment
- Medical or professional school
- Ohio State University College Of Medicine, 2019
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,277 in Ohio → Look up another NPI →
Also registered at 1800 Zollinger RD FL 3
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mary C. Wirtz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35.143347Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,894 Medicare Part D claims for 288 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 28 claims were for opioids.
Most prescribed
- Atorvastatin Calcium237 claims
- Levothyroxine Sodium186 claims
- Lisinopril126 claims
- Rosuvastatin Calcium119 claims
- Losartan Potassium118 claims
- Amlodipine Besylate90 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Osu General Internal Medicine LLCColumbus, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary C. Wirtz among 5,277 internal medicine physician records in Ohio
Mary C. Wirtz, MD is one of 5,277 internal medicine physician records with a practice address in Ohio. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 81% of them.
- NPI issued2019 · 81% of these records are older, 15% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2019 · median 2006 among the 3,414 with a school on file
- Record last updated2025 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
580 internal medicine physician records list a practice address in Columbus
They are 580 of the 36,491 NPPES records with a practice address in Columbus, and 5,277 internal medicine physician records in Ohio.
All 5,277 in Ohio → Every provider in Columbus → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- James Lamb, MDColumbus, OH 432211821053448
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Common questions
What is Mary C. Wirtz, MD's NPI number?
Mary C. Wirtz, MD's National Provider Identifier (NPI) is 1780145995, issued on Mar 29, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Mary C. Wirtz, MD located?
The NPPES record lists a practice address at 1800 Zollinger RD FL 3, Columbus, OH, 43221. Phone: (614) 293-5123. Providers update this record themselves, so call before visiting.
How can I verify Mary C. Wirtz, MD's license?
NPPES lists Ohio license number 35.143347, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mary C. Wirtz, MD prescribe under Medicare Part D?
In 2024, Mary C. Wirtz, MD had 2,894 Medicare Part D claims for 288 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.