Robert Ryan Riech, M.D., MPH
Internal Medicine Physician · Chillicothe, IL
Robert Ryan Riech, M.D., MPH is an internal medicine physician with a practice address in Chillicothe, Illinois, and NPI 1437225935, issued on Nov 27, 2006. Check the license on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Robert Ryan Riech
- Credential
- M.D., MPH
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 01060841A IN
Self-reported in NPPES; status is on the state search - Practice location
- 319 N 4TH St, Chillicothe, IL 61523
- Phone
- (309) 673-6464
- Enumerated
- Nov 27, 2006
- Record last updated
- Sep 25, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (309) 274-3120
- Medicaid ID
- 036118731 IL
- Medicare enrollment
- Enrolled (PECOS I20070829000246); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 319 N 4TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Casey Kimler, APNNurse Practitioner1710396395
- Tim VegaFamily Medicine Physician1508956897
Verify Robert Ryan Riech in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional RegulationCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.0 times the Medicare Part D claims of the average internal medicine physician in 2024
6,395 Medicare Part D claims for 697 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 167 claims were for opioids.
Most prescribed
- Atorvastatin Calcium654 claims
- Amlodipine Besylate429 claims
- Losartan Potassium318 claims
- Levothyroxine Sodium291 claims
- Lisinopril255 claims
- Omeprazole241 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
- Osf Multi-Specialty GroupPeoria, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert Ryan Riech among 7,238 internal medicine physician records in Illinois
Robert Ryan Riech, M.D., MPH is one of 7,238 internal medicine physician records with a practice address in Illinois. 73% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 61% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2003 · median 2003 among the 3,580 with a school on file
- Record last updated2007 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 internal medicine physician records list a practice address in Chillicothe
They are 2 of the 55 NPPES records with a practice address in Chillicothe, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Chillicothe → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Christopher Nau, MDChillicothe, IL 615231104023092
- Kenneth Krock, MDCanton, IL 615201699883868
- John McCarthy, MDCanton, IL 615201033327069
- Benjamin Phillips, MDCanton, IL 615201275678021
- Jimmie Smith, MDCanton, IL 615201194834937
- Gail Williamson, MDCanton, IL 615201376597732
- Jason Chamberlin, DOFarmington, IL 615311831207349
- Thaw Tun, MDHenry, IL 615371326142902
Common questions
What is Robert Ryan Riech, M.D., MPH's NPI number?
Robert Ryan Riech, M.D., MPH's National Provider Identifier (NPI) is 1437225935, issued on Nov 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert Ryan Riech, M.D., MPH located?
The NPPES record lists a practice address at 319 N 4TH St, Chillicothe, IL, 61523. Phone: (309) 673-6464. Providers update this record themselves, so call before visiting.
How can I verify Robert Ryan Riech, M.D., MPH's license?
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 Robert Ryan Riech, M.D., MPH prescribe under Medicare Part D?
In 2024, Robert Ryan Riech, M.D., MPH had 6,395 Medicare Part D claims for 697 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.