Douglas B. Aach, MD
Surgery Physician · Shiloh, IL
Douglas B. Aach, MD is a surgery physician with a practice address in Shiloh, Illinois, and NPI 1508817040, issued on May 12, 2006. Check the license (Illinois 036082445, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Douglas B. Aach
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- 036082445 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1414 Cross Street, Shiloh, IL 62269
- Phone
- (618) 277-7400
- Enumerated
- May 12, 2006
- Record last updated
- Mar 20, 2024
- Fax
- (618) 277-7422
- Medicaid ID
- 036082445 IL
- Medicare enrollment
- Enrolled (PECOS I20050221000132); accepts Medicare assignment
- Medical or professional school
- University Of Missouri, Kansas City, School Of Medicine, 1986
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 1,520 in Illinois → Look up another NPI →
Also registered at 1414 Cross Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kevin Barnett, MDSurgery Physician1932166030
- Michael Bergom, MDSurgery Physician1801814108
- James Clanahan, MDSurgery Physician1770531956
- Paul Loethen, MDSurgery Physician1053595538
- Thomas Luong, MDSurgery Physician1376713826
- Scott Schwiesow, MDSurgery Physician1164834024
Verify Douglas B. Aach 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 036082445Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average surgery physician in 2024
65 Medicare Part D claims for 56 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 52 claims were for opioids.
Most prescribed
- Tramadol Hcl50 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
- 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).
Douglas B. Aach among 1,520 surgery physician records in Illinois
Douglas B. Aach, MD is one of 1,520 surgery physician records with a practice address in Illinois. 66% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 64% newer
- In a Medicare fileYes · 66% of these records are
- In the CMS Doctors and Clinicians fileYes · 43% of these records are
- Graduated1986 · median 2004 among the 650 with a school on file
- Record last updated2024 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
11 surgery physician records list a practice address in Shiloh
They are 11 of the 181 NPPES records with a practice address in Shiloh, and 1,520 surgery physician records in Illinois.
All 1,520 in Illinois → Every provider in Shiloh → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Kevin Barnett, MDShiloh, IL 622691932166030
- Michael Bergom, MDShiloh, IL 622691801814108
- James Clanahan, MDShiloh, IL 622691770531956
- Donald Crouch, M.D.Shiloh, IL 622691619925880
- Lyman Hale, M.D., M.S.Shiloh, IL 622691619298940
- Paul Loethen, MDShiloh, IL 622691053595538
- Thomas Luong, MDShiloh, IL 622691376713826
- Michael Pulsipher, DOShiloh, IL 622691366061731
Common questions
What is Douglas B. Aach, MD's NPI number?
Douglas B. Aach, MD's National Provider Identifier (NPI) is 1508817040, issued on May 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Douglas B. Aach, MD located?
The NPPES record lists a practice address at 1414 Cross Street, Shiloh, IL, 62269. Phone: (618) 277-7400. Providers update this record themselves, so call before visiting.
How can I verify Douglas B. Aach, MD's license?
NPPES lists Illinois license number 036082445, 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 Douglas B. Aach, MD prescribe under Medicare Part D?
In 2024, Douglas B. Aach, MD had 65 Medicare Part D claims for 56 beneficiaries; the average among surgery physician prescribers was 147. 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.