Daniel F. Chamberlain, MD
Internal Medicine Physician · Rockford, IL
Daniel F. Chamberlain, MD is an internal medicine physician with a practice address in Rockford, Illinois, and NPI 1396833307, issued on Oct 11, 2006. Check the license on the Illinois Department of Financial and Professional Regulation; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Daniel F. Chamberlain
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- Practice location
- 3775 N Mulford RD, Rockford, IL 61114
- Phone
- (815) 636-6400
- Enumerated
- Oct 11, 2006
- Record last updated
- Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 3775 N Mulford RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Abby Antczak, APRNFamily Nurse Practitioner1194545749
- Holly AskarFamily Nurse Practitioner1689371445
- Amanda BargielFamily Nurse Practitioner1770475097
- Courtney Brannan, APNNurse Practitioner1134695281
- Abrianna Brodnicki, FNPNurse Practitioner1023855293
Verify Daniel F. Chamberlain 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
Daniel F. Chamberlain among 7,238 internal medicine physician records in Illinois
Daniel F. Chamberlain, MD 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 not. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 61% newer
- In a Medicare fileNo · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- 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).
82 internal medicine physician records list a practice address in Rockford
They are 82 of the 3,893 NPPES records with a practice address in Rockford, and 7,238 internal medicine physician records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 7,238 in Illinois → Every provider in Rockford → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Humaira Bari, MDRockford, IL 611141497845135
- Thomas Brefeld, MDRockford, IL 611141699885871
- Aaron Coates, MDRockford, IL 611141871603050
- Venkata Dontaraju, M.D, MRCPRockford, IL 611141821241084
- Daniel Herdeman, MDRockford, IL 611141447293451
- Willard Moore, MDRockford, IL 611141831209022
- Peter Phelan, MDRockford, IL 611141548358534
- Linda Razbadouski, M.D.Rockford, IL 611141538194154
Common questions
What is Daniel F. Chamberlain, MD's NPI number?
Daniel F. Chamberlain, MD's National Provider Identifier (NPI) is 1396833307, issued on Oct 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Daniel F. Chamberlain, MD located?
The NPPES record lists a practice address at 3775 N Mulford RD, Rockford, IL, 61114. Phone: (815) 636-6400. Providers update this record themselves, so call before visiting.
How can I verify Daniel F. Chamberlain, MD'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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.