John Matthew Castor, MD
Gastroenterology Physician · Columbus, OH
John Matthew Castor, MD is a gastroenterology physician with a practice address in Columbus, Ohio, and NPI 1093987257, issued on Mar 27, 2008. Check the license (Ohio 35097145, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- John Matthew Castor
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 35097145 OH
Self-reported in NPPES; status is on the state search - Practice location
- 3400 Olentangy River RD, Columbus, OH 43202
- Phone
- (614) 754-5500
- Enumerated
- Mar 27, 2008
- Record last updated
- Nov 2, 2023
- Fax
- (614) 457-9519
- Medicaid ID
- 0054018 OH
- Medicare enrollment
- Enrolled (PECOS I20110721000670); accepts Medicare assignment
- Medical or professional school
- Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University, 2005
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 741 in Ohio → Look up another NPI →
Also registered at 3400 Olentangy River RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jan Batson, CRNACertified Registered Nurse Anesthetist1285871194
- Ruchi Bhatia, MDTransplant Hepatology Physician1003194093
- Kiran Bidari, M.D.Gastroenterology Physician1083847826
- Prachi Biyani, MDGastroenterology Physician1508185398
- Jennifer Botkins, M.D.Gastroenterology Physician1982839643
Verify John Matthew Castor in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35097145Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
31% more Medicare Part D claims than the average gastroenterology physician in 2024
1,061 Medicare Part D claims for 550 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Peg 3350-Electrolyte320 claims
- Omeprazole260 claims
- Pantoprazole Sodium72 claims
- Gavilyte-G36 claims
- Ondansetron Odt34 claims
- Cholestyramine25 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $218.55
6 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Ohio Gastroenterology Group, Inc.Columbus, OH
- Ohiohealth CorporationColumbus, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Matthew Castor among 741 gastroenterology physician records in Ohio
John Matthew Castor, MD is one of 741 gastroenterology physician records with a practice address in Ohio. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 62% of them.
- NPI issued2008 · 62% of these records are older, 34% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2005 · median 2003 among the 540 with a school on file
- Record last updated2023 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Ohio
There are 741 gastroenterology physician records in Ohio.
All 741 in Ohio → Every provider in Columbus → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Michael Brogan, MDColumbus, OH 432021922091594
- Gregory Gibbons, MDColumbus, OH 432021861486102
- Shail Govani, MDColumbus, OH 432021841317526
- Adam Hanje, M.D.Columbus, OH 432021043361298
- Victor Jochem, MDColumbus, OH 432021932193620
- David Lo, M.D.Columbus, OH 432021720161854
- Anoop Prabhu, M.D.Columbus, OH 432021083814982
- Raghuram Reddy, MDColumbus, OH 432021699752543
Common questions
What is John Matthew Castor, MD's NPI number?
John Matthew Castor, MD's National Provider Identifier (NPI) is 1093987257, issued on Mar 27, 2008. An NPI identifies a provider in billing; it is not a license.
Where is John Matthew Castor, MD located?
The NPPES record lists a practice address at 3400 Olentangy River RD, Columbus, OH, 43202. Phone: (614) 754-5500. Providers update this record themselves, so call before visiting.
How can I verify John Matthew Castor, MD's license?
NPPES lists Ohio license number 35097145, 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 John Matthew Castor, MD prescribe under Medicare Part D?
In 2024, John Matthew Castor, MD had 1,061 Medicare Part D claims for 550 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is John Matthew Castor, MD's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.