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MARIA ROWENA R ZAMBAS NP
NPI 1689407595
Nurse Practitioner - Family in Oak Lawn, IL

Active since August 26, 2024PECOS Enrolled
4201 W 95TH ST, OAK LAWN, IL 60453(708) 636-8546 Get Directions Write a Review

NPPES record last updated: October 21, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Maria Rowena R Zambas Np NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARIA ROWENA R ZAMBAS NP (NPI 1689407595) is an individual family provider in Oak Lawn, Illinois, licensed in Illinois (209030150) and active in the NPI registry since August 2024. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1689407595
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameMARIA ROWENA R ZAMBASCredential: NP
Location Address4201 W 95TH STOak Lawn, IL 60453-2615
Mailing Address5541 S Everett Ave Apt 707Chicago, IL 60637-5068 · (773) 396-6134
Phone(708) 636-8546
Sole ProprietorNo
Enumeration DateAugust 26, 2024
Last NPPES UpdateOctober 21, 2024
NPPES CertifiedOctober 21, 2024
✔ NPI 1689407595 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in IL · 209030150
Also ListedFamily MedicineTaxonomy 207Q00000X · License 209030150 (IL)
4201 W 95TH ST, Oak Lawn, IL 60453
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Maria Rowena R Zambas Np is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Maria Rowena Zambas reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Asj MD Sc
5.7 mi
Family Medicine
6508 S HALSTED ST
Chicago, IL 60621
  • Reassigned Medicare billing, Illinois enrollment
  • 5 clinicians in this Medicare group
NPI 1740776350 (773) 651-1224
Matrix Medical Plus
387 mi
Nurse Practitioner
424 CHURCH ST STE 2600
Nashville, TN 37219
  • Reassigned Medicare billing, Illinois enrollment
  • 19 clinicians in this Medicare group
NPI 1376973461 (877) 564-3627
Synergy Medical Group LLC
545 mi
Nephrology
14014 MARSH PIKE
Hagerstown, MD 21742
  • Reassigned Medicare billing, Maryland and District of Columbia enrollments
  • Also billed through NPI 1811815707 (District of Columbia)
  • 101 clinicians in this Medicare group
NPI 1992695704 (301) 733-8700

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60453 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$94.06 typical visit price
range $60.08 – $183.39
Typical copayment $23.51 (range $15.02 – $45.84)
Most-billed visit code 99203
Established Patient
$105.70 typical visit price
range $18.97 – $148.12
Typical copayment $26.42 (range $4.74 – $37.03)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 9

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DRAGOMIR JOVANOVIC M.D.
Family Medicine
4201 W 95TH ST
OAK LAWN, IL 60453
Cook County (708) 636-1466
OAK LAWN IMMEDIATE CARE LLC
Family Medicine
4201 W 95TH ST
OAK LAWN, IL 60453
Cook County (773) 754-3500
P D MEDICAL, S.C.
Family Medicine
4201 W 95TH ST
OAK LAWN, IL 60453
Cook County (708) 636-1466
DR. PETER B. DRAGISIC M.D.
Family Medicine
4201 W 95TH ST
OAK LAWN, IL 60453
Cook County (708) 636-1466
OAK LAWN IMMEDIATE CARE LLC
Clinic/Center (Urgent Care)
4201 W 95TH ST
OAK LAWN, IL 60453
Cook County (708) 499-7661
MRS. SARAH ELIZABETH GONZALES ZOETEMAN FNP
Nurse Practitioner (Family)
4201 W 95TH ST
OAK LAWN, IL 60453
Cook County (708) 636-8546
DR. AMIT AGARWAL MD
Family Medicine
4201 W 95TH ST
OAK LAWN, IL 60453
Cook County (708) 636-1466
AMY FISHER
Nurse Practitioner (Family)
4201 W 95TH ST
OAK LAWN, IL 60453
Cook County (708) 420-0182

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Maria Rowena Zambas's NPI number?

The NPI number for Maria Rowena Zambas is 1689407595. It was assigned to this individual provider in the NPPES registry on August 26, 2024.

Where is Maria Rowena Zambas located?

Maria Rowena Zambas practices at 4201 W 95th St, Oak Lawn, IL 60453. The listed phone number is (708) 636-8546.

What is Maria Rowena Zambas's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Maria Rowena Zambas enrolled in Medicare?

Yes. Maria Rowena Zambas is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Maria Rowena Zambas's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Maria Rowena Zambas reassigns Medicare benefits to 3 organizations: Asj MD Sc (Chicago, IL), Matrix Medical Plus (Nashville, TN) and Synergy Medical Group LLC (Hagerstown, MD). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Maria Rowena Zambas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Maria Rowena Zambas was last updated on October 21, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.