Felix Obregon
Internal Medicine Physician · Naperville, IL
Felix Obregon is an internal medicine physician with a practice address in Naperville, Illinois, and NPI 1831271709, issued on Oct 20, 2006. Check the license (Illinois 036-069552, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Felix Obregon
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036-069552 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1971 Gowdey RD Ste 205, Naperville, IL 60563
- Phone
- (630) 966-2637
- Enumerated
- Oct 20, 2006
- Record last updated
- Feb 6, 2024
- Fax
- (630) 966-1611
- Medicare enrollment
- Enrolled (PECOS I20040513000187); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Verify Felix Obregon 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 036-069552Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
20% more Medicare Part D claims than the average internal medicine physician in 2024
3,815 Medicare Part D claims for 145 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 621 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen413 claims
- Alprazolam149 claims
- Atorvastatin Calcium93 claims
- Metformin Hcl93 claims
- Amlodipine Besylate91 claims
- Gabapentin88 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.
Industry payments in 2024: $524.47
24 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Felix Obregon among 7,238 internal medicine physician records in Illinois
Felix Obregon 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
- Graduated1976 · median 2003 among the 3,580 with a school on file
- Record last updated2024 · 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).
75 internal medicine physician records list a practice address in Naperville
They are 75 of the 4,634 NPPES records with a practice address in Naperville, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Naperville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Rohini Bhat, MDNaperville, IL 605631700988706
- Mary Dea, DONaperville, IL 605631518951474
- Barbara Emery-Stolzer, MDNaperville, IL 605631982698841
- Peter Furey, M.D.Naperville, IL 605631609859289
- Cicily Jones, MDNaperville, IL 605631255396511
- Mary King, MDNaperville, IL 605631649246729
- Francine Long, MDNaperville, IL 605631063406924
- William Mollohan, D.O.Naperville, IL 605631720006919
Common questions
What is Felix Obregon's NPI number?
Felix Obregon's National Provider Identifier (NPI) is 1831271709, issued on Oct 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Felix Obregon located?
The NPPES record lists a practice address at 1971 Gowdey RD Ste 205, Naperville, IL, 60563. Phone: (630) 966-2637. Providers update this record themselves, so call before visiting.
How can I verify Felix Obregon's license?
NPPES lists Illinois license number 036-069552, 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 Felix Obregon prescribe under Medicare Part D?
In 2024, Felix Obregon had 3,815 Medicare Part D claims for 145 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.