Jennifer R. Maag, MD
Family Medicine Physician · Ottawa, OH
Jennifer R. Maag, MD is a family medicine physician with a practice address in Ottawa, Ohio, and NPI 1689841900, issued on May 15, 2008. Check the license (Ohio 35.097228, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Jennifer R. Maag
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 35.097228 OH
01067107A IN
Self-reported in NPPES; status is on the state search - Practice location
- 102 Putnam Pkwy, Ottawa, OH 45875
- Phone
- (419) 523-9632
- Enumerated
- May 15, 2008
- Record last updated
- Jan 4, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (419) 523-9636
- Medicare enrollment
- Enrolled (PECOS I20110915000764); accepts Medicare assignment
- Medical or professional school
- Wright State University Boonshoft School Of Medicine, 2008
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 5,606 in Ohio → Look up another NPI →
Also registered at 102 Putnam Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kayla CroyFamily Nurse Practitioner1912314311
- Darcie Jerwers, O.D.Optometrist1972868271
Verify Jennifer R. Maag in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35.097228Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.2 times the Medicare Part D claims of the average family medicine physician in 2024
14,929 Medicare Part D claims for 477 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 309 claims were for opioids.
Most prescribed
- Atorvastatin Calcium795 claims
- Amlodipine Besylate403 claims
- Metformin Hcl373 claims
- Levothyroxine Sodium366 claims
- Lisinopril344 claims
- Omeprazole334 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
- Lima Memorial Professional CorporationOttawa, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jennifer R. Maag among 5,606 family medicine physician records in Ohio
Jennifer R. Maag, MD 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 2008, is newer than 60% of them.
- NPI issued2008 · 60% of these records are older, 37% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2008 · 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).
5 family medicine physician records list a practice address in Ottawa
They are 5 of the 211 NPPES records with a practice address in Ottawa, and 5,606 family medicine physician records in Ohio.
All 5,606 in Ohio → Every provider in Ottawa → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Ali Chohan, MDOttawa, OH 458751891319836
- Tate Church, MDOttawa, OH 458751942839220
- Jeffrey Eiden, MDOttawa, OH 458751538118559
- Katelyn Leopold, M.D.Ottawa, OH 458751174785133
- Joel Knerr, M.D.Ottoville, OH 458761598740961
- Lance Criblez, M.D.Pandora, OH 458771174519342
- Timothy Hogan, M.D.Oakwood, OH 458731154414837
- David Houston, M.D.Pandora, OH 458771386630309
Common questions
What is Jennifer R. Maag, MD's NPI number?
Jennifer R. Maag, MD's National Provider Identifier (NPI) is 1689841900, issued on May 15, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Jennifer R. Maag, MD located?
The NPPES record lists a practice address at 102 Putnam Pkwy, Ottawa, OH, 45875. Phone: (419) 523-9632. Providers update this record themselves, so call before visiting.
How can I verify Jennifer R. Maag, MD's license?
NPPES lists Ohio license number 35.097228, 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 Jennifer R. Maag, MD prescribe under Medicare Part D?
In 2024, Jennifer R. Maag, MD had 14,929 Medicare Part D claims for 477 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.