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IOANA MARCU
NPI 1316393473
Obstetrics & Gynecology in Saint Louis, MO

Active since May 09, 2016PECOS EnrolledAccepts Medicare Assignment
621 S NEW BALLAS RD STE 499A, SAINT LOUIS, MO 63141(314) 251-7650(314) 251-7651 Get Directions Write a Review

NPPES record last updated: March 11, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Mar 11, 2026, Feb 2, 2026, Feb 3, 2021 and 2 more (5 updates tracked since 2016).

About Ioana Marcu NPPES

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

IOANA MARCU (NPI 1316393473) is an individual obstetrics & gynecology provider in Saint Louis, Missouri, licensed in Missouri (2025043275) and active in the NPI registry since May 2016. She is enrolled in Medicare PECOS, is affiliated with Mercy Hospital St Louis, and is a graduate of Saint Louis University School Of Medicine (2016).

NPPES Registry Identity

NPI1316393473
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameIOANA MARCU
Location Address621 S NEW BALLAS RD STE 499ASaint Louis, MO 63141-8260
Mailing Address621 S New Ballas Rd Ste 499aSaint Louis, MO 63141-8260 · (314) 251-7650 · Fax (314) 251-7651
Phone(314) 251-7650
Fax(314) 251-7651
Sole ProprietorNo
Medical School CMSSaint Louis University School Of MedicineGraduated 2016
Enumeration DateMay 9, 2016
Last NPPES UpdateMarch 11, 20265 updates tracked since enumeration
NPPES CertifiedMarch 11, 2026
✔ NPI 1316393473 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in MO · 2025043275
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.
621 S NEW BALLAS RD STE 499A, Saint Louis, MO 63141
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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

Ioana Marcu 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 ID8527356963
PECOS Enrollment IDI20200929001875
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

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

Mercy Hospital St Louis

Acute Care Hospitals · Saint Louis, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260020
Location615 New Ballas RoadSaint Louis, MO 63141 · St. Louis County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63141 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
$128.28 typical visit price
range $55.65 – $169.38
Typical copayment $32.07 (range $13.91 – $42.34)
Most-billed visit code 99204
Established Patient
$69.50 typical visit price
range $17.76 – $137.92
Typical copayment $17.37 (range $4.44 – $34.48)
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.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Intermittent urinary catheter; straight tip, with or without coating (teflon, silicone, silicone elastomer, or hydrophilic, etc.), each A4351
DME-Orthotic Devices · category DF008N
1 supplier16 claims2,304 services$1.67 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 3

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

DR. RACHEL YOON KMETZ M.D.
Obstetrics & Gynecology (Gynecology)
621 S NEW BALLAS RD STE 499A
SAINT LOUIS, MO 63141
St. Louis County (314) 251-7650
JOE SHI M.D.
Obstetrics & Gynecology (Urogynecology and Reconstructive Pelvic Surgery)
621 S NEW BALLAS RD STE 499A
SAINT LOUIS, MO 63141
St. Louis County (314) 251-7650
ZACHARY KELLER MD
Obstetrics & Gynecology
621 S NEW BALLAS RD STE 499A
SAINT LOUIS, MO 63141
St. Louis County (314) 251-7477

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 Ioana Marcu's NPI number?

The NPI number for Ioana Marcu is 1316393473. It was assigned to this individual provider in the NPPES registry on May 9, 2016.

Where is Ioana Marcu located?

Ioana Marcu practices at 621 S New Ballas Rd Ste 499A, Saint Louis, MO 63141. The listed phone number is (314) 251-7650.

What is Ioana Marcu's specialty?

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

Is Ioana Marcu enrolled in Medicare?

Yes. Ioana Marcu 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.

Is Ioana Marcu affiliated with any hospitals?

According to CMS data, Ioana Marcu is affiliated with Mercy Hospital St Louis.

When was this NPI record last updated?

The NPPES record for Ioana Marcu was last updated on March 11, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.