Dr. Nicholas A. Marschalk, DO
- Medicare services, 2024
- 299
- Medicare patients, 2024
- 148
- Part D claims, 2024
- 156
- Hospital affiliations
- 2
- Medical group
- 1
- Practice address
- 452 W 10th Ave, Columbus, OH 43210
- Practice phone
- Call (614) 293-2229
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
The Ohio State University Medical Center
Columbus, Ohio
Find Dr. Marschalk's 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. Nicholas A. Marschalk is an infectious disease specialist in Columbus, Ohio
Dr. Marschalk practices at The Ohio State University Medical Center in Columbus, Ohio.
Dr. Marschalk's NPI, 1215399357, was assigned on March 28, 2016. Dr. Marschalk graduated from Midwestern University, Chicago College of Osteopathic Med in 2016. Dr. Marschalk holds Ohio license 34.013105.
- NPI
- 1215399357NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5294020368
- NPI enumeration date
- March 28, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (614) 293-2229
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Nicholas A. Marschalk practices at The Ohio State University Medical Center in Columbus, Ohio
Dr. Marschalk's primary practice is The Ohio State University Medical Center, at 452 W 10th Ave, Columbus, OH 43210 in Franklin County. The practice phone is (614) 293-2229.
- The Ohio State University Medical Center452 W 10th Ave, Columbus, OH 43210 · Franklin CountyPhone(614) 293-2229
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Nicholas A. Marschalk is affiliated with 4 sites of care and 1 medical group
Dr. Marschalk's primary practice is The Ohio State University Medical Center in Columbus, Ohio. Dr. Marschalk is also affiliated with Ohio State University Hospital. The medical group on file is Ohio State University Physicians. Dmand AI also links Dr. Marschalk to 1 more hospital and 1 group practice or clinic, 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. Nicholas A. Marschalk's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Marschalk practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| The Ohio State University Medical Center | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Nicholas A. Marschalk is one of 319 infectious disease specialists in Ohio
Infectious disease is Dr. Marschalk's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Marschalk is licensed in Ohio.
Specialties and state licenses
- Infectious disease, OhioPrimary
Infectious disease specialists near Dr. Marschalk
Counts of infectious disease specialists 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. Nicholas A. Marschalk billed Medicare for 299 services in 2024
CMS data shows 299 Medicare services from Dr. Marschalk across 5 procedure codes in 2024, for 148 Medicare patients. Medicare paid $26,495 for them.
Dr. Marschalk's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3562024: 29916%
Where Dr. Marschalk's Medicare services took place, 2024
- In an office124%
- In a facility28796%
Dr. Marschalk compared with the Ohio median for infectious disease specialists, 2024
- Dr. Marschalk
- Ohio median
- Medicare services
- 299vs 36117% below
- Medicare patients
- 148vs 144Close to median
- Part D claims
- 96vs 22056% below
Medians across 312 infectious disease specialists in Ohio with Dmand AI profiles that report each measure.
Dr. Marschalk'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. Nicholas A. Marschalk treated 148 Medicare patients in 2024, average age 64
CMS counts 148 Medicare patients who saw Dr. Marschalk in 2024. The largest group is 65 to 74, with 67 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 34% are also on Medicaid. Their average risk score is 5.52, 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. Marschalk's median patient age at 58, with 44% women.
Dr. Marschalk's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Marschalk's Medicare patients by sex, 2024
- Women5336%
- Men9564%
Chronic conditions among Dr. Marschalk's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes59%
- Heart failure55%
- Ischemic heart disease55%
- Anxiety48%
- Mood disorders48%
Share of Medicare patients with each condition. A patient can have several.
Dr. Marschalk's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women44%
- Men55%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Nicholas A. Marschalk wrote 156 Medicare Part D claims in 2024
In 2024, Dr. Marschalk wrote 156 Medicare Part D claims for 38 patients. 84% of them were for generic drugs. CMS names the drug for 96 of them, across 6 drugs with 11 or more claims each, at $71,042 in total drug cost. In 2023, CMS named 11 claims across 1 drug.
Dr. Marschalk's Part D claims by kind of drug, 2024
- Generic131 claims84%
- Brand-name25 claims16%
Dr. Marschalk'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.
Drug classes CMS tracks in Dr. Marschalk's Part D claims, 2024
- Antibiotics51%80 of 156 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 112024: 96773%
Drugs named by CMS: 6 in 2024, 1 in 2023.
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. Nicholas A. Marschalk offers telehealth to Medicare patients
Dr. Marschalk accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Marschalk as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Nicholas A. Marschalk graduated from Midwestern University, Chicago College of Osteopathic Med
Dr. Marschalk graduated from Midwestern University, Chicago College of Osteopathic Med in 2016.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Nicholas A. Marschalk'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Nicholas A. Marschalk
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. Nicholas A. Marschalk's NPI number?
Dr. Nicholas A. Marschalk's NPI number is 1215399357. It was assigned on March 28, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Nicholas A. Marschalk?
Dr. Nicholas A. Marschalk is an infectious disease specialist in Columbus, Ohio. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).
Where does Dr. Nicholas A. Marschalk practice?
Dr. Marschalk practices at 452 W 10th Ave, Columbus, OH 43210. Dr. Marschalk's primary practice is The Ohio State University Medical Center in Columbus, Ohio. Dmand AI also links Dr. Marschalk to 1 hospital and 1 group practice or clinic.
What is Dr. Nicholas A. Marschalk's office phone number?
The practice phone on file for Dr. Marschalk is (614) 293-2229.
What is Dr. Nicholas A. Marschalk's medical license number?
Dr. Marschalk holds Ohio license 34.013105.
Which hospitals is Dr. Nicholas A. Marschalk affiliated with?
Dr. Marschalk is affiliated with Ohio State University Hospital. Dmand AI links Dr. Marschalk to 1 more hospital.
What medical group is Dr. Nicholas A. Marschalk part of?
Dr. Marschalk is linked to Ohio State University Physicians.
Does Dr. Nicholas A. Marschalk accept Medicare?
Yes. CMS data shows Dr. Marschalk billed Medicare for 299 services in 2024, and Dr. Marschalk accepts Medicare assignment.
Does Dr. Nicholas A. Marschalk offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Marschalk as offering telehealth services.
How many Medicare patients does Dr. Nicholas A. Marschalk see?
CMS counts 148 Medicare patients who saw Dr. Marschalk in 2024, with an average age of 64.
Show 4 more questionsShow fewer questions
What services does Dr. Nicholas A. Marschalk bill to Medicare?
In 2024, Dr. Marschalk's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99232) and hospital inpatient care (99223).
Where did Dr. Nicholas A. Marschalk go to medical school?
Dr. Marschalk graduated from Midwestern University, Chicago College of Osteopathic Med in 2016.
What drugs does Dr. Nicholas A. Marschalk prescribe most?
In 2024 Medicare Part D data, Dr. Marschalk's most prescribed drugs by claims were Valganciclovir HCl, Amoxicillin-Clavulanate Potass and Cefepime HCl.
How long has Dr. Nicholas A. Marschalk been practicing?
Dr. Marschalk graduated from medical school in 2016, 10 years ago.
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