James C. Althoff, MD
Family Medicine Physician · Freeburg, IL
James C. Althoff, MD is a family medicine physician with a practice address in Freeburg, Illinois, and NPI 1306952098, issued on Aug 22, 2006. Check the license (Illinois 036091574, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- James C. Althoff
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 036091574 IL
Self-reported in NPPES; status is on the state search - Practice location
- 251 Market Place Drive, Freeburg, IL 62243
- Phone
- (618) 539-0067
- Enumerated
- Aug 22, 2006
- Record last updated
- Oct 18, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (618) 539-0288
- Medicaid ID
- 036091574 IL
- Medicare enrollment
- Enrolled (PECOS I20100719000400); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 1993
- Entity
- Type 1 · individual
Verify James C. Althoff 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 036091574Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.8 times the Medicare Part D claims of the average family medicine physician in 2024
13,338 Medicare Part D claims for 772 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. 401 claims were for opioids.
Most prescribed
- Atorvastatin Calcium873 claims
- Lisinopril583 claims
- Amlodipine Besylate526 claims
- Losartan Potassium442 claims
- Levothyroxine Sodium431 claims
- Omeprazole391 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: $527.59
28 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
- Lincoln Surgical Associates, Ltd.Shiloh, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
4 family medicine physician records list a practice address in Freeburg
They are 4 of the 37 NPPES records with a practice address in Freeburg, and 6,215 family medicine physician records in Illinois.
All 4 in Freeburg → All 6,215 in Illinois → Every provider in Freeburg →
Other family medicine physician records in Illinois
- Jon Aagaard, MDWheaton, IL1750496923
- Napoleon Abando, MDWoodstock, IL1003972753
- Nikka Abaricia, MDChicago, IL1790366342
- Mohemmed AbbasChicago, IL1609612522
- Muhammad AbbasAlton, IL1588341556
- Syed AbbasWest Dundee, IL1972733103
- Stefanie AbbottMaywood, IL1861137457
- Roann Abdeladl, MDEvanston, IL1437087103
- Ahmed Abdelkader, MDChicago, IL1659104230
- Guy Abderholden, MDAntioch, IL1902899792
Common questions
What is James C. Althoff, MD's NPI number?
James C. Althoff, MD's National Provider Identifier (NPI) is 1306952098, issued on Aug 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James C. Althoff, MD located?
The NPPES record lists a practice address at 251 Market Place Drive, Freeburg, IL, 62243. Phone: (618) 539-0067. Providers update this record themselves, so call before visiting.
How can I verify James C. Althoff, MD's license?
NPPES lists Illinois license number 036091574, 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 James C. Althoff, MD prescribe under Medicare Part D?
In 2024, James C. Althoff, MD had 13,338 Medicare Part D claims for 772 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.