Nicholas A. Marschalk, DO
Infectious Disease Physician · Columbus, OH
Nicholas A. Marschalk, DO is an infectious disease physician with a practice address in Columbus, Ohio, and NPI 1215399357, issued on Mar 28, 2016. Check the license (Ohio 34.013105, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Nicholas A. Marschalk
- Credential
- DO
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- 34.013105 OH
Self-reported in NPPES; status is on the state search - Practice location
- 1581 Dodd Dr, Columbus, OH 43210
- Phone
- (614) 293-4854
- Enumerated
- Mar 28, 2016
- Record last updated
- Feb 10, 2026
- Fax
- (614) 293-8102
- Medicare enrollment
- Enrolled (PECOS I20210723002602); accepts Medicare assignment
- Medical or professional school
- Midwestern University, Chicago College Of Osteopathic Med, 2016
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 350 in Ohio → Look up another NPI →
Also registered at 1581 Dodd Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Leama Ajaka, MDInfectious Disease Physician1548792104
- Ali Al Safi, MDInfectious Disease Physician1073140323
- Nathaniel Albright, APRN-CNPFamily Nurse Practitioner1225690761
- Gerald Arnold, APRN-CNPAdult Health Nurse Practitioner1023257417
- Haylie Badely, APRN-CNPFamily Nurse Practitioner1891546966
- Betsey Benson, PH.D.Psychologist1104959030
Verify Nicholas A. Marschalk in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 34.013105Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average infectious disease physician in 2024
156 Medicare Part D claims for 38 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Valganciclovir Hcl21 claims
- Amoxicillin-Clavulanate Potass19 claims
- Cefepime Hcl18 claims
- Biktarvy13 claims
- Doxycycline Hyclate13 claims
- Fluconazole12 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.
The MIPS final score for 2023 (Medicare payment program): 95.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Osu Internal Medicine LLCColumbus, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nicholas A. Marschalk among 350 infectious disease physician records in Ohio
Nicholas A. Marschalk, DO is one of 350 infectious disease physician records with a practice address in Ohio. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 83% of them.
- NPI issued2016 · 83% of these records are older, 14% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2016 · median 2002 among the 246 with a school on file
- Record last updated2026 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in Ohio
There are 350 infectious disease physician records in Ohio.
All 350 in Ohio → Every provider in Columbus → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Jose Bazan, D.O.Columbus, OH 432101326168832
- John Davis, PHD MDColumbus, OH 432101962484725
- Shandra Day, M.D.Columbus, OH 432101649495789
- Susan Koletar, MDColumbus, OH 432101043226525
- Christina Liscynesky, M.D.Columbus, OH 432101265657134
- William Maher, M.D.Columbus, OH 432101376559872
- Julie Mangino, MDColumbus, OH 432101518973023
- Bradford McGwire, MDColumbus, OH 432101497760979
Common questions
What is Nicholas A. Marschalk, DO's NPI number?
Nicholas A. Marschalk, DO's National Provider Identifier (NPI) is 1215399357, issued on Mar 28, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Nicholas A. Marschalk, DO located?
The NPPES record lists a practice address at 1581 Dodd Dr, Columbus, OH, 43210. Phone: (614) 293-4854. Providers update this record themselves, so call before visiting.
How can I verify Nicholas A. Marschalk, DO's license?
NPPES lists Ohio license number 34.013105, 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 Nicholas A. Marschalk, DO prescribe under Medicare Part D?
In 2024, Nicholas A. Marschalk, DO had 156 Medicare Part D claims for 38 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
What is Nicholas A. Marschalk, DO's MIPS final score?
The 2023 MIPS final score is 95.3 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.