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DR. ANNA GILLIO M.D.
NPI 1700237849
Surgery in Michigan City, IN

Active since June 30, 2016PECOS EnrolledAccepts Medicare Assignment
3500 FRANCISCAN WAY STE 3A, MICHIGAN CITY, IN 46360(219) 861-8828(219) 861-8827 Get Directions Write a Review

NPPES record last updated: July 30, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 16, 2024, Aug 21, 2016, Jun 30, 2016 (3 updates tracked since 2016).

About Dr. Anna Gillio M.d. NPPES

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

DR. ANNA GILLIO M.D. (NPI 1700237849) is an individual surgery provider in Michigan City, Indiana, licensed in Wisconsin (81891-20) and active in the NPI registry since June 2016. She is enrolled in Medicare PECOS, is affiliated with Franciscan Health Michigan City, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1700237849
Entity TypeIndividualFemale
Primary Taxonomy208600000X
Provider Legal NameDR. ANNA GILLIOCredential: M.D.
Location Address3500 FRANCISCAN WAY STE 3AMichigan City, IN 46360-0033
Mailing Address7895 Grand BlvdHobart, IN 46342-6665 · (219) 947-1910 · Fax (219) 947-3117
Phone(219) 861-8828
Fax(219) 861-8827
Sole ProprietorNo
Medical School CMSOtherGraduated 2016
Enumeration DateJune 30, 2016
Last NPPES UpdateJuly 30, 20253 updates tracked since enumeration
NPPES CertifiedJuly 30, 2025
✔ NPI 1700237849 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
License✔ Licensed in WI · 81891-20
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
Also ListedSurgery · Vascular SurgeryTaxonomy 2086S0129X · License 81891-20 (WI)
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X · License 11019062A (IN)
3500 FRANCISCAN WAY STE 3A, Michigan City, IN 46360
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Secondary Practice Locations 2

Location 12590 Morthland Dr Ste AValparaiso, IN 46385-6701 · Phone (219) 246-2338 · Fax (219) 286-7394
Location 27895 Grand BlvdHobart, IN 46342-6665 · Phone (219) 947-1910 · Fax (219) 947-3117

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

Dr. Anna Gillio 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 ID8527350727
PECOS Enrollment IDI20250519002337
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 Anna Gillio reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Indiana Surgical Associates PC
23 mi
Surgery
7895 GRAND BLVD
Hobart, IN 46342
  • Reassigned Medicare billing, Indiana enrollment
  • 21 clinicians in this Medicare group
NPI 1679616296 (219) 947-1910

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

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Franciscan Health Michigan City

Acute Care Hospitals · Michigan City, IN
3/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number150015
Location3500 Franciscan WayMichigan City, IN 46360 · La Porte County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 46360 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
$82.04 typical visit price
range $53.07 – $161.76
Typical copayment $20.51 (range $13.26 – $40.44)
Most-billed visit code 99203
Established Patient
$66.48 typical visit price
range $16.93 – $132.22
Typical copayment $16.62 (range $4.23 – $33.05)
Most-billed visit code 99213
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 5

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

AARON JOSEPH SCHNEIDER MD
Surgery
3500 FRANCISCAN WAY STE 3A
MICHIGAN CITY, IN 46360
Laporte County (219) 861-8828
DR. ELIZABETH M HERBER MD
Surgery
3500 FRANCISCAN WAY STE 3A
MICHIGAN CITY, IN 46360
Laporte County (219) 861-8828
KRISTOPHER B. WILLIAMS MD
Surgery
3500 FRANCISCAN WAY STE 3A
MICHIGAN CITY, IN 46360
Laporte County (219) 861-8828
JASON DOUGLAS MD
Surgery
3500 FRANCISCAN WAY STE 3A
MICHIGAN CITY, IN 46360
Laporte County (219) 861-8828
DR. COSMINA CRISTEA D.O.
Surgery
3500 FRANCISCAN WAY STE 3A
MICHIGAN CITY, IN 46360
Laporte County (219) 861-8828

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 Anna Gillio's NPI number?

The NPI number for Anna Gillio is 1700237849. It was assigned to this individual provider in the NPPES registry on June 30, 2016.

Where is Anna Gillio located?

Anna Gillio practices at 3500 Franciscan Way Ste 3A, Michigan City, IN 46360. The listed phone number is (219) 861-8828.

What is Anna Gillio's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Anna Gillio enrolled in Medicare?

Yes. Anna Gillio 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 Anna Gillio's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Anna Gillio reassigns Medicare benefits to Indiana Surgical Associates PC (Hobart, IN). 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 Anna Gillio's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Anna Gillio accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and CareSource list Anna Gillio 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.

Is Anna Gillio affiliated with any hospitals?

According to CMS data, Anna Gillio is affiliated with Franciscan Health Michigan City.

When was this NPI record last updated?

The NPPES record for Anna Gillio was last updated on July 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months 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.