Maria Rowena R. Zambas, NP
Family Nurse Practitioner · Oak Lawn, IL
Maria Rowena R. Zambas, NP is a family nurse practitioner with a practice address in Oak Lawn, Illinois, and NPI 1689407595, issued on Aug 26, 2024. Check the license (Illinois 209030150, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Maria Rowena R. Zambas
- Credential
- NP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 209030150 IL
Self-reported in NPPES; status is on the state search - Practice location
- 4201 W 95TH St, Oak Lawn, IL 60453
- Phone
- (708) 636-8546
- Enumerated
- Aug 26, 2024
- Record last updated
- Oct 21, 2024
- Medicare enrollment
- Enrolled (PECOS I20250814001560); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 7,639 in Illinois → Look up another NPI →
Also registered at 4201 W 95TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Peter Dragisic, M.D.Family Medicine Physician1205932332
- Amy FisherFamily Nurse Practitioner1790464857
- Sarah Gonzales Zoeteman, FNPFamily Nurse Practitioner1508351446
- Dragomir Jovanovic, M.D.Family Medicine Physician1063518108
Verify Maria Rowena R. Zambas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209030150Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average family nurse practitioner in 2024
82 Medicare Part D claims for 49 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of 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.
Maria Rowena R. Zambas among 7,639 family nurse practitioner records in Illinois
Maria Rowena R. Zambas, NP 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 2024, is newer than 85% of them.
- NPI issued2024 · 85% of these records are older, 9% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2024 · median 2018 among the 4,778 with a school on file
- Record last updated2024 · 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).
93 family nurse practitioner records list a practice address in Oak Lawn
They are 93 of the 2,993 NPPES records with a practice address in Oak Lawn, and 7,639 family nurse practitioner records in Illinois.
All 7,639 in Illinois → Every provider in Oak Lawn → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Kelly Billingsley, NPOak Lawn, IL 604531063761724
- Leah Burns, APN, FNPOak Lawn, IL 604531548509110
- Kelly Canerday, FNP-BCOak Lawn, IL 604531952744963
- Jeanne Dougherty, APNOak Lawn, IL 604531598872368
- Jane Flanagan, APNOak Lawn, IL 604531770779522
- Linda Follenweider, NPOak Lawn, IL 604531740228584
- Lisa Guzman, NPOak Lawn, IL 604531790886257
- Amy Hansen, FNPOak Lawn, IL 604531629491543
Common questions
What is Maria Rowena R. Zambas, NP's NPI number?
Maria Rowena R. Zambas, NP's National Provider Identifier (NPI) is 1689407595, issued on Aug 26, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Maria Rowena R. Zambas, NP located?
The NPPES record lists a practice address at 4201 W 95TH St, Oak Lawn, IL, 60453. Phone: (708) 636-8546. Providers update this record themselves, so call before visiting.
How can I verify Maria Rowena R. Zambas, NP's license?
NPPES lists Illinois license number 209030150, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Maria Rowena R. Zambas, NP prescribe under Medicare Part D?
In 2024, Maria Rowena R. Zambas, NP had 82 Medicare Part D claims for 49 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.