Mark Andrew Dewalt, DO
Family Medicine Physician · Hilliard, OH
Mark Andrew Dewalt, DO is a family medicine physician with a practice address in Hilliard, Ohio, and NPI 1497724918, issued on Mar 16, 2006. Check the license (Ohio 34-008401, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Mark Andrew Dewalt
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 34-008401 OH
Self-reported in NPPES; status is on the state search - Practice location
- 4343 All Seasons Dr, Hilliard, OH 43026
- Phone
- (614) 544-1100
- Enumerated
- Mar 16, 2006
- Record last updated
- Dec 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (614) 544-1101
- Medicaid ID
- 2637034 OH
- Medicare enrollment
- Enrolled (PECOS I20050729000666); accepts Medicare assignment
- Medical or professional school
- Ohio University, College Of Osteopathic Medicine, 2002
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 5,606 in Ohio → Look up another NPI →
Also registered at 4343 All Seasons Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Deeksha Agrawal, M.D.Neurology Physician1780972372
- Tracy Ander, D.O.Neurology Physician1801121355
- Erin Brown, D.P.T.Physical Therapist1023304953
- Nicole Davis, PTPhysical Therapist1760906101
- Rebecca Devillers, D.O.Family Medicine Physician1366492589
- David Dewalt, D.O.Family Medicine Physician1821106014
Verify Mark Andrew Dewalt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 34-008401Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% more Medicare Part D claims than the average family medicine physician in 2024
6,775 Medicare Part D claims for 450 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 182 claims were for opioids.
Most prescribed
- Atorvastatin Calcium405 claims
- Levothyroxine Sodium318 claims
- Amlodipine Besylate199 claims
- Gabapentin192 claims
- Rosuvastatin Calcium178 claims
- Omeprazole162 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
- Ohiohealth CorporationColumbus, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Andrew Dewalt among 5,606 family medicine physician records in Ohio
Mark Andrew Dewalt, DO is one of 5,606 family medicine 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 2006, is newer than 18% of them.
- NPI issued2006 · 18% of these records are older, 48% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2002 · median 2005 among the 3,510 with a school on file
- Record last updated2021 · 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 207Q00000X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
56 family medicine physician records list a practice address in Hilliard
They are 56 of the 1,149 NPPES records with a practice address in Hilliard, and 5,606 family medicine physician records in Ohio.
All 5,606 in Ohio → Every provider in Hilliard → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Rebecca Devillers, D.O.Hilliard, OH 430261366492589
- Paul Dusseau, M.D.Hilliard, OH 430261518944750
- Joseph Dusseau, MDHilliard, OH 430261114980463
- Brad Efaw, MDHilliard, OH 430261841275229
- Jeffrey Fusco, D.O.Hilliard, OH 430261851366397
- Leah Heinlen, MDHilliard, OH 430261245215094
- Joseph Jeu, MDHilliard, OH 430261508849647
- Rick Long, M.D.Hilliard, OH 430261528045762
Common questions
What is Mark Andrew Dewalt, DO's NPI number?
Mark Andrew Dewalt, DO's National Provider Identifier (NPI) is 1497724918, issued on Mar 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Andrew Dewalt, DO located?
The NPPES record lists a practice address at 4343 All Seasons Dr, Hilliard, OH, 43026. Phone: (614) 544-1100. Providers update this record themselves, so call before visiting.
How can I verify Mark Andrew Dewalt, DO's license?
NPPES lists Ohio license number 34-008401, 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 Mark Andrew Dewalt, DO prescribe under Medicare Part D?
In 2024, Mark Andrew Dewalt, DO had 6,775 Medicare Part D claims for 450 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.