Tammy S. Zweeres, APN
Nurse Practitioner · Romeoville, IL
Tammy S. Zweeres, APN is a nurse practitioner with a practice address in Romeoville, Illinois, and NPI 1255690574, issued on May 7, 2012. Check the license (Illinois 277004182, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Tammy S. Zweeres
- Credential
- APN
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License numbers
- 277004182 IL
209009537 IL
Self-reported in NPPES; status is on the state search - Practice location
- 500 S Weber RD, Romeoville, IL 60446
- Phone
- (815) 773-7732
- Enumerated
- May 7, 2012
- Record last updated
- Jun 3, 2025
- Medicare enrollment
- Enrolled (PECOS I20120703000331); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 4,892 in Illinois → Look up another NPI →
Also registered at 500 S Weber RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nikhil VijCritical Care Medicine Registered Nurse1912495391
- Usman Zaheer, DOHematology & Oncology Physician1104319383
Verify Tammy S. Zweeres in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 277004182Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% fewer Medicare Part D claims than the average nurse practitioner in 2024
708 Medicare Part D claims for 128 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims. 94 claims were for opioids.
Most prescribed
- Eliquis64 claims
- Hydrocodone-Acetaminophen49 claims
- Potassium Chloride39 claims
- Gabapentin33 claims
- Ondansetron Hcl32 claims
- Anastrozole22 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: $1,661.07
71 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 38,884 providers of this specialty with any payment received $791.64 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.
Bills Medicare through one group practice
- Prime Healthcare Illinois Medical Group LLCJoliet, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tammy S. Zweeres among 4,892 nurse practitioner records in Illinois
Tammy S. Zweeres, APN is one of 4,892 nurse practitioner records with a practice address in Illinois. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 22% of them.
- NPI issued2012 · 22% of these records are older, 75% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2011 · median 2018 among the 3,389 with a school on file
- Record last updated2025 · 36% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 nurse practitioner records list a practice address in Romeoville
They are 4 of the 320 NPPES records with a practice address in Romeoville, and 4,892 nurse practitioner records in Illinois.
All 4,892 in Illinois → Every provider in Romeoville → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Rachel Carlson, APNRomeoville, IL 604461497763882
- Julee Kauling, APRNRomeoville, IL 604461437108909
- Dymna Rielly, APNRomeoville, IL 604461033822275
- Jeraldene Shaffer, NPCrestwood, IL 604451831120104
- Jennifer Truhlar, APRNMinooka, IL 604471255173571
- Francisco Acevedo, APRN, CNPMokena, IL 604481467446930
- Jessica Bara, APRN, CNPMokena, IL 604481457698961
- Coleen Carney, APN/CNPMokena, IL 604481831422740
Common questions
What is Tammy S. Zweeres, APN's NPI number?
Tammy S. Zweeres, APN's National Provider Identifier (NPI) is 1255690574, issued on May 7, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Tammy S. Zweeres, APN located?
The NPPES record lists a practice address at 500 S Weber RD, Romeoville, IL, 60446. Phone: (815) 773-7732. Providers update this record themselves, so call before visiting.
How can I verify Tammy S. Zweeres, APN's license?
NPPES lists Illinois license number 277004182, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Tammy S. Zweeres, APN prescribe under Medicare Part D?
In 2024, Tammy S. Zweeres, APN had 708 Medicare Part D claims for 128 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.