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VIVIAN CRUZ NANAGAS M.D.
NPI 1285977033
Allergy & Immunology in Zionsville, IN

Active since March 30, 2013PECOS EnrolledAccepts Medicare Assignment
4400 WESTON POINTE DR STE 150, ZIONSVILLE, IN 46077(317) 732-4046(855) 656-7325 Get Directions Write a Review

NPPES record last updated: July 12, 2019. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jul 12, 2019, Dec 31, 2018, Sep 25, 2018 and 3 more (6 updates tracked since 2018).

About Vivian Cruz Nanagas M.d. NPPES

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

VIVIAN CRUZ NANAGAS M.D. (NPI 1285977033) is an individual allergy & immunology provider in Zionsville, Indiana, licensed in Indiana (PENDING) and active in the NPI registry since March 2013. She is enrolled in Medicare PECOS and is a graduate of Wright State University Boonshoft School Of Medicine (2013).

NPPES Registry Identity

NPI1285977033
Entity TypeIndividualFemale
Primary Taxonomy207K00000X
Provider Legal NameVIVIAN CRUZ NANAGASCredential: M.D.
Location Address4400 WESTON POINTE DR STE 150Zionsville, IN 46077
Mailing Address9800 Shelbyville Rd Ste 220Louisville, KY 40223-2992 · (502) 429-8585 · Fax (502) 429-6157
Phone(317) 732-4046
Fax(855) 656-7325
Sole ProprietorNo
Medical School CMSWright State University Boonshoft School Of MedicineGraduated 2013
Enumeration DateMarch 30, 2013
Last NPPES UpdateJuly 12, 20196 updates tracked since enumeration
✔ NPI 1285977033 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAllergy & ImmunologyAllopathic & Osteopathic Physicians
Taxonomy Code207K00000X
License✔ Licensed in IN · PENDING
Definition
An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.
4400 WESTON POINTE DR STE 150, Zionsville, IN 46077
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Vivian Cruz Nanagas M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1759660285
PECOS Enrollment IDI20190814004127
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 Reassignment

Medicare enrollment records show Vivian Nanagas reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Psf PLLC
123 mi
Allergy & Immunology
9800 SHELBYVILLE RD, STE 220
Louisville, KY 40223
  • Reassigned Medicare billing, Indiana enrollment
  • 35 clinicians in this Medicare group
NPI 1881785947 (502) 429-8585

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

Areas of Expertise CMS Part B claims 10

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Test for allergy using allergenic extract 95004
An allergy test with allergenic extract is a diagnostic method to identify substances causing allergic reactions. Small amounts of common allergens are introduced to your body, usually through skin pricks or blood tests. Your body's response helps determine your allergies.
1,759 services23 patients
Test for allergy using allergenic extract injected into skin 95024
An allergy skin test involves injecting a small amount of allergenic extract into your skin. This test helps determine if you're allergic to specific substances. If allergic, a small red bump appears at the test site. It's safe and quick.
646 services20 patients
Professional service for preparation and provision of 1 or more antigens 95165
This service involves the creation and supply of antigens, substances that stimulate your immune system to fight diseases. These antigens can be used in vaccines or allergy tests to help your body build defenses against specific health threats.
560 services26 patients
Professional service for multiple injections of allergen 95117
The professional service for multiple injections of allergens involves administering small doses of specific allergens into your body. This is done to help your immune system become less sensitive to them, reducing your allergic reaction over time. It's a safe, effective way to manage allergies.
496 services37 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
92 services59 patients
Administration and interpretation of patient-focused health risk assessment 96160
This procedure involves a detailed evaluation of your health to identify potential risks. It includes analyzing your medical history, lifestyle habits, and family health history. The results are interpreted to provide a personalized plan to improve your health and prevent future issues.
55 services36 patients

Other Providers at the Same Location NPPES

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

ANN THERESE ESQUIVEL M.D.
Allergy & Immunology
4400 WESTON POINTE DR STE 150
ZIONSVILLE, IN 46077
Boone County (317) 732-4046

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 Vivian Nanagas's NPI number?

The NPI number for Vivian Nanagas is 1285977033. It was assigned to this individual provider in the NPPES registry on March 30, 2013.

Where is Vivian Nanagas located?

Vivian Nanagas practices at 4400 Weston Pointe Dr Ste 150, Zionsville, IN 46077. The listed phone number is (317) 732-4046.

What is Vivian Nanagas's specialty?

The primary specialty registered for this NPI is Allergy & Immunology with taxonomy code 207K00000X.

Is Vivian Nanagas enrolled in Medicare?

Yes. Vivian Nanagas is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Vivian Nanagas's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Vivian Nanagas reassigns Medicare benefits to Psf PLLC (Louisville, KY). The 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 Vivian Nanagas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Vivian Nanagas accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and CareSource list Vivian Nanagas as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Vivian Nanagas was last updated on July 12, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.