Timothy S. Chamberlain, M.D.
Internal Medicine Physician · Prophetstown, IL
Timothy S. Chamberlain, M.D. is an internal medicine physician with a practice address in Prophetstown, Illinois, and NPI 1598835837, issued on Nov 8, 2006. Check the license (Illinois 036-103082, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Timothy S. Chamberlain
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036-103082 IL
Self-reported in NPPES; status is on the state search - Practice location
- 701 E 3RD St, Prophetstown, IL 61277
- Phone
- (815) 537-5168
- Enumerated
- Nov 8, 2006
- Record last updated
- Jun 21, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (815) 537-5268
- Medicaid ID
- 36103082 IL
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 701 E 3RD St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kristine Byer, FNP-CFamily Nurse Practitioner1073266052
- Richa Vaidya, PHYSICAL THERAPISTPhysical Therapist1902329212
Verify Timothy S. Chamberlain 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 036-103082Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
149 Medicare Part D claims for 16 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Lisinopril13 claims
- Rosuvastatin Calcium13 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.
Timothy S. Chamberlain among 7,238 internal medicine physician records in Illinois
Timothy S. Chamberlain, M.D. 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 fileNo · 50% of these records are
- Record last updated2011 · 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).
1 internal medicine physician record lists a practice address in Prophetstown
They are 1 of the 19 NPPES records with a practice address in Prophetstown, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Prophetstown → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Toluwanimi Aladesua, MDSilvis, IL 612821831717172
- Leighton Arcenas, M.D.Silvis, IL 612821245224310
- Naira Taiba FatimaSilvis, IL 612821659003754
- Kinna Patel, M.D.Silvis, IL 612821932302114
- Goyanka Ranganathan, MDSilvis, IL 612821639780968
- Crystal Bolser, AGNPMoline, IL 612651518785146
- Eileen Castro, MDMoline, IL 612651104892215
- Ashlee Holst, D.O.Moline, IL 612651679892707
Common questions
What is Timothy S. Chamberlain, M.D.'s NPI number?
Timothy S. Chamberlain, M.D.'s National Provider Identifier (NPI) is 1598835837, issued on Nov 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Timothy S. Chamberlain, M.D. located?
The NPPES record lists a practice address at 701 E 3RD St, Prophetstown, IL, 61277. Phone: (815) 537-5168. Providers update this record themselves, so call before visiting.
How can I verify Timothy S. Chamberlain, M.D.'s license?
NPPES lists Illinois license number 036-103082, 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 Timothy S. Chamberlain, M.D. prescribe under Medicare Part D?
In 2024, Timothy S. Chamberlain, M.D. had 149 Medicare Part D claims for 16 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.