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BARBARA DIAKOS MD
NPI 1912934423
Obstetrics & Gynecology in Saint John, IN

Active since June 28, 2006PECOS EnrolledAccepts Medicare Assignment
9660 WICKER AVE, SAINT JOHN, IN 46373(219) 226-2236 Get Directions Write a Review

NPPES record last updated: June 7, 2024. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jun 7, 2024, Aug 14, 2019 (2 updates tracked since 2019).

About Barbara Diakos Md NPPES

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

BARBARA DIAKOS MD (NPI 1912934423) is an individual obstetrics & gynecology provider in Saint John, Indiana, licensed in Indiana (01082757A) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS, is affiliated with St Mary Medical Center Inc, and is a graduate of Loyola University Of Chicago, Stritch School Of Medicine (1990).

NPPES Registry Identity

NPI1912934423
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameBARBARA DIAKOSCredential: MD
Location Address9660 WICKER AVESaint John, IN 46373-9487
Mailing Address8558 BroadwayMerrillville, IN 46410-7032 · (219) 739-2770 · Fax (219) 703-6854
Phone(219) 226-2236
Sole ProprietorNo
Medical School CMSLoyola University Of Chicago, Stritch School Of MedicineGraduated 1990
Enumeration DateJune 28, 2006
Last NPPES UpdateJune 7, 20242 updates tracked since enumeration
NPPES CertifiedJune 7, 2024
✔ NPI 1912934423 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in IN · 01082757A
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
9660 WICKER AVE, Saint John, IN 46373
Open in Google Maps ↗

Other Identifiers 3

Medicaid300010757IN
Other1620171IL · Blue Cross Blue Shield
Medicaid036086553IL

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, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Barbara Diakos Md 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 ID9931240694
PECOS Enrollment IDI20190822001371
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.

Hospital Affiliations CMS Care Compare 2

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

St Mary Medical Center Inc

Acute Care Hospitals · Hobart, IN
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number150034
Location1500 S Lake Park AveHobart, IN 46342 · Lake County
Emergency services Birthing friendly

Community Hospital

Acute Care Hospitals · Munster, IN
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number150125
Location901 Macarthur BlvdMunster, IN 46321 · Lake County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 46373 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
$122.49 typical visit price
range $53.07 – $161.76
Typical copayment $30.62 (range $13.26 – $40.44)
Most-billed visit code 99204
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 20

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

MARGARITA VEGA-SUAREZ FNP-C
Nurse Practitioner (Family)
9660 WICKER AVE, 2ND FL
SAINT JOHN, IN 46373
Lake County (219) 703-2417
DR. TASHA M HARRIS MD
Emergency Medicine
9660 WICKER AVE
ST. JOHN, IN 46373
Lake County (219) 365-7620
SAADUDDIN MOHAMMED SIDDIQUI MD
Emergency Medicine
9660 WICKER AVE
SAINT JOHN, IN 46373
Lake County (219) 365-1177
MUNSTER ORTHOPAEDIC INSTITUTE, LLC
Orthopaedic Surgery
9660 WICKER AVE
SAINT JOHN, IN 46373
Lake County (219) 677-4940
MS. ALICIA FOWLER NP-C
Nurse Practitioner (Family)
9660 WICKER AVE
SAINT JOHN, IN 46373
Lake County (219) 365-1177
MUNSTER ORTHOPAEDIC INSTITUTE, LLC
Durable Medical Equipment & Medical Supplies
9660 WICKER AVE
SAINT JOHN, IN 46373
Lake County (219) 836-2225
ALONZO KEVIN MORRISSEY MD
Family Medicine
9660 WICKER AVE
ST JOHN, IN 46373
Lake County (219) 365-1166
MARNE J JUESTEL FNP
Nurse Practitioner
9660 WICKER AVE
SAINT JOHN, IN 46373
Lake County (219) 365-1177

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 Barbara Diakos's NPI number?

The NPI number for Barbara Diakos is 1912934423. It was assigned to this individual provider in the NPPES registry on June 28, 2006.

Where is Barbara Diakos located?

Barbara Diakos practices at 9660 Wicker Ave, Saint John, IN 46373. The listed phone number is (219) 226-2236.

What is Barbara Diakos's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Barbara Diakos enrolled in Medicare?

Yes. Barbara Diakos 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.

What insurance does Barbara Diakos accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian and CareSource list Barbara Diakos 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 Barbara Diakos affiliated with any hospitals?

According to CMS data, Barbara Diakos is affiliated with St Mary Medical Center Inc and Community Hospital.

When was this NPI record last updated?

The NPPES record for Barbara Diakos was last updated on June 7, 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.