Jeffrey C. Tanzi, DO
Family Medicine Physician · Ottawa, IL
Jeffrey C. Tanzi, DO is a family medicine physician with a practice address in Ottawa, Illinois, and NPI 1891706107, issued on Aug 11, 2006. Check the license (Illinois 036.121629, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Jeffrey C. Tanzi
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 036.121629 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1306 Gemini Cir Ste 1, Ottawa, IL 61350
- Phone
- (815) 433-9200
- Enumerated
- Aug 11, 2006
- Record last updated
- Oct 17, 2022
- Fax
- (815) 705-1716
- Medicare enrollment
- Enrolled (PECOS I20090119000072); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 2005
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Also registered at 1306 Gemini Cir Ste 1
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Melchor Paulo Aranas, M.D.Family Medicine Physician1376775205
- Melissa Hill, M.D.Pediatrics Physician1902246309
- Angela Todd, NPFamily Nurse Practitioner1336565134
Verify Jeffrey C. Tanzi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036.121629Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1% fewer Medicare Part D claims than the average family medicine physician in 2024
3,511 Medicare Part D claims for 280 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 108 claims were for opioids.
Most prescribed
- Levothyroxine Sodium164 claims
- Atorvastatin Calcium159 claims
- Amlodipine Besylate132 claims
- Lisinopril130 claims
- Omeprazole91 claims
- Losartan Potassium87 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: $870.33
31 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 55,478 providers of this specialty with any payment received $902.55 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 one group practice
- Morris HospitalOttawa, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jeffrey C. Tanzi among 6,215 family medicine physician records in Illinois
Jeffrey C. Tanzi, DO is one of 6,215 family medicine physician records with a practice address in Illinois. 78% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 59% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2005 · median 2006 among the 3,714 with a school on file
- Record last updated2022 · 54% 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 family medicine physician records list a practice address in Ottawa
They are 12 of the 334 NPPES records with a practice address in Ottawa, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in Ottawa → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Melchor Paulo Aranas, M.D.Ottawa, IL 613501376775205
- Jasmine Bhurgri, MDOttawa, IL 613501821046186
- Adriana Dumitrescu, MDOttawa, IL 613501376591933
- German Gonzalo, MDOttawa, IL 613501922487958
- Gueorgui Gueorguiev, M.D.Ottawa, IL 613501356336952
- Kallista Kamberos, DOOttawa, IL 613501932776101
- Ushasri KogantiOttawa, IL 613501992917009
- Terry Love, D.O.Ottawa, IL 613501124034459
Common questions
What is Jeffrey C. Tanzi, DO's NPI number?
Jeffrey C. Tanzi, DO's National Provider Identifier (NPI) is 1891706107, issued on Aug 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jeffrey C. Tanzi, DO located?
The NPPES record lists a practice address at 1306 Gemini Cir Ste 1, Ottawa, IL, 61350. Phone: (815) 433-9200. Providers update this record themselves, so call before visiting.
How can I verify Jeffrey C. Tanzi, DO's license?
NPPES lists Illinois license number 036.121629, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jeffrey C. Tanzi, DO prescribe under Medicare Part D?
In 2024, Jeffrey C. Tanzi, DO had 3,511 Medicare Part D claims for 280 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.