Rex B. Mowat, MD
Hematology & Oncology Physician · Toledo, OH
Rex B. Mowat, MD is a hematology & oncology physician with a practice address in Toledo, Ohio, and NPI 1346247251, issued on Jul 7, 2005. Check the license (Ohio 35063502M, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Rex B. Mowat
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 35063502M OH
Self-reported in NPPES; status is on the state search - Practice location
- 4235 Secor RD, Toledo, OH 43623
- Phone
- (419) 479-5605
- Enumerated
- Jul 7, 2005
- Record last updated
- Feb 5, 2026
- Medicaid ID
- 0896544 OH
- Medicare enrollment
- Enrolled (PECOS I20060105000500); accepts Medicare assignment
- Medical or professional school
- Wayne State University School Of Medicine, 1985
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 513 in Ohio → Look up another NPI →
Also registered at 4235 Secor RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Olivia Ajja, CRNACertified Registered Nurse Anesthetist1225138431
- Osama Al-Bawab, MDCardiovascular Disease Physician1609877075
- Bayan Al-Hurani, MDInternal Medicine Physician1598260689
- Nasir Ali, MDPulmonary Disease Physician1447257282
Verify Rex B. Mowat in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35063502MCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
18% more Medicare Part D claims than the average hematology & oncology physician in 2024
1,031 Medicare Part D claims for 242 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D.
Most prescribed
- Anastrozole161 claims
- Prochlorperazine Maleate85 claims
- Letrozole77 claims
- Ibrance63 claims
- Dexamethasone51 claims
- Prednisone47 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.
Industry payments in 2024: $1,471.70
41 payments; by number, the most common kind was food and beverage; the largest payer was Cornerstone Specialty Network LLC. The 8,560 providers of this specialty with any payment received $7,481.41 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
- Fchc Medical Care, LLCWauseon, OH
- Toledo Clinic IncorporatedToledo, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rex B. Mowat among 513 hematology & oncology physician records in Ohio
Rex B. Mowat, MD is one of 513 hematology & oncology physician records with a practice address in Ohio. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 84% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1985 · median 2001 among the 369 with a school on file
- Record last updated2026 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Ohio
There are 513 hematology & oncology physician records in Ohio.
All 513 in Ohio → Every provider in Toledo → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- David Brown, MDToledo, OH 436231710985361
- Glen Burton, MDToledo, OH 436231689672081
- Bahu Shaikh, M.D.Toledo, OH 436231225036668
- Abhay Shelke, MDToledo, OH 436231861682916
- Ahmad Zarzour, M.D.Toledo, OH 436231992149041
- Zauraiz Anjum, MDToledo, OH 436141497364103
- Shaili Desai, MDToledo, OH 436141285845578
- Danae Hamouda, M.D.Toledo, OH 436141316382260
Common questions
What is Rex B. Mowat, MD's NPI number?
Rex B. Mowat, MD's National Provider Identifier (NPI) is 1346247251, issued on Jul 7, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Rex B. Mowat, MD located?
The NPPES record lists a practice address at 4235 Secor RD, Toledo, OH, 43623. Phone: (419) 479-5605. Providers update this record themselves, so call before visiting.
How can I verify Rex B. Mowat, MD's license?
NPPES lists Ohio license number 35063502M, 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 Rex B. Mowat, MD prescribe under Medicare Part D?
In 2024, Rex B. Mowat, MD had 1,031 Medicare Part D claims for 242 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.