Sandra Mazzeffi, APRN
Family Nurse Practitioner · Chicago, IL
Sandra Mazzeffi, APRN is a family nurse practitioner with a practice address in Chicago, Illinois, and NPI 1740844232, issued on Apr 30, 2019. Check the license (Illinois 209019369, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Sandra Mazzeffi
- Credential
- APRN
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 209019369 IL
Self-reported in NPPES; status is on the state search - Practice location
- 3000 N Halsted St, Chicago, IL 60657
- Phone
- (773) 296-3390
- Enumerated
- Apr 30, 2019
- Record last updated
- Apr 27, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20200417001943); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 7,639 in Illinois → Look up another NPI →
Also registered at 3000 N Halsted St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Sandra Mazzeffi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209019369Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average family nurse practitioner in 2024
212 Medicare Part D claims for 91 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims. 56 claims were for opioids.
Most prescribed
- Oxycodone Hcl45 claims
- Eliquis30 claims
- Xarelto15 claims
- Clopidogrel14 claims
- Methocarbamol13 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: $159.27
3 payments; by number, the most common kind was food and beverage; the largest payer was Solventum Corporation. The 99,489 providers of this specialty with any payment received $650.95 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
- Rush University Medical GroupChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sandra Mazzeffi among 7,639 family nurse practitioner records in Illinois
Sandra Mazzeffi, APRN is one of 7,639 family nurse practitioner records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 51% of them.
- NPI issued2019 · 51% of these records are older, 41% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2019 · median 2018 among the 4,778 with a school on file
- Record last updated2021 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,567 family nurse practitioner records list a practice address in Chicago
They are 1,567 of the 63,379 NPPES records with a practice address in Chicago, and 7,639 family nurse practitioner records in Illinois.
All 7,639 in Illinois → Every provider in Chicago → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Joyce Allen, APN, FNP-BCChicago, IL 606571033481007
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- Judy Davis, APN,FNPChicago, IL 606571558421719
- Stephanie Gounder, FNP-BCChicago, IL 606571508008152
- Amy Gregory, APNChicago, IL 606571770810194
- Karen Hawk, APNChicago, IL 606571699056630
- Erin Kenar, FNP-BCChicago, IL 606571497180848
- Rosemarie MossmanChicago, IL 606571255678249
Common questions
What is Sandra Mazzeffi, APRN's NPI number?
Sandra Mazzeffi, APRN's National Provider Identifier (NPI) is 1740844232, issued on Apr 30, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Sandra Mazzeffi, APRN located?
The NPPES record lists a practice address at 3000 N Halsted St, Chicago, IL, 60657. Phone: (773) 296-3390. Providers update this record themselves, so call before visiting.
How can I verify Sandra Mazzeffi, APRN's license?
NPPES lists Illinois license number 209019369, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Sandra Mazzeffi, APRN prescribe under Medicare Part D?
In 2024, Sandra Mazzeffi, APRN had 212 Medicare Part D claims for 91 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.