Nancy J. Field, D.O.
Adolescent Medicine (Internal Medicine) Physician · Oak Brook, IL
Nancy J. Field, D.O. is an adolescent medicine (internal medicine) physician with a practice address in Oak Brook, Illinois, and NPI 1427090653, issued on Jun 12, 2006. Check the license on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Nancy J. Field
- Credential
- D.O.
- Primary taxonomy
- Adolescent Medicine (Internal Medicine) Physician 207RA0000X
- Practice location
- 900 Jorie Blvd, Oak Brook, IL 60523
- Phone
- (630) 954-6700
- Enumerated
- Jun 12, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Also registered at 900 Jorie Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- John Davis, M.D.Adolescent Medicine (Internal Medicine) Physician1154363372
- Marcia Dawson, M.D.Neonatal-Perinatal Medicine Physician1689611147
Verify Nancy J. Field 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
100% fewer Medicare Part D claims than the average adolescent medicine (internal medicine) physician in 2024
12 Medicare Part D claims, against an average of 3,639 among the 177 providers of this specialty who prescribed in Part D.
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.
Adolescent Medicine (Internal Medicine) Physician providers in Illinois
There are 13 adolescent medicine (internal medicine) physician records in Illinois.
Other adolescent medicine (internal medicine) physician records in Illinois
- Anne Borwick, D.O.Fairview Heights, IL1326032046
- Harley Brooks, M.D.Oak Brook, IL1326080177
- Elizabeth Carazo, M.D.Mt Prospect, IL1922140300
- John Davis, M.D.Oak Brook, IL1154363372
- Asim Elmahboub, M.D.Greenville, IL1316984859
- Syed Ghani, M.DMcHenry, IL1205877396
- Peter Joo, M.D.Melrose Park, IL1336181197
- Surabhi Mehrotra, M.D.Chicago, IL1447297890
- Christina Nulty, M.D.Peoria, IL1114142643
- Elisa Scott, M.D.Oak Brook, IL1912949181
Common questions
What is Nancy J. Field, D.O.'s NPI number?
Nancy J. Field, D.O.'s National Provider Identifier (NPI) is 1427090653, issued on Jun 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nancy J. Field, D.O. located?
The NPPES record lists a practice address at 900 Jorie Blvd, Oak Brook, IL, 60523. Phone: (630) 954-6700. Providers update this record themselves, so call before visiting.
How can I verify Nancy J. Field, D.O.'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 Nancy J. Field, D.O. prescribe under Medicare Part D?
In 2024, Nancy J. Field, D.O. had 12 Medicare Part D claims; the average among adolescent medicine (internal medicine) physician prescribers was 3,639. 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.