DR. REBECCA Y. PETERSEN MD
NPI 1205125952
Pediatrics - Neonatal-Perinatal Medicine in Saint Louis, MO

Q: What is Rebecca Petersen's NPI number?

The NPI number for Rebecca Petersen is 1205125952. It was assigned to this individual provider in the NPPES registry on April 4, 2011. The provider is also known as Rebecca Young MD.

Q: What is Rebecca Petersen's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Neonatal-Perinatal Medicine, with taxonomy code 2080N0001X.

Q: When was this NPI record last updated?

The NPPES record for Rebecca Petersen was last updated on January 18, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.

Active since April 04, 2011PECOS Enrolled

1465 S GRAND BLVD, SAINT LOUIS, MO 63104(314) 577-5642(314) 268-6410 Get Directions Write a Review

NPPES record last updated: January 18, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jan 18, 2021, Apr 17, 2019, Apr 11, 2019 and 3 more (6 updates tracked since 2016).

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About Dr. Rebecca Y. Petersen Md NPPES

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

DR. REBECCA Y. PETERSEN MD (NPI 1205125952) is an individual neonatal-perinatal medicine provider in Saint Louis, Missouri, licensed in Missouri (2014011522) and active in the NPI registry since April 2011. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1205125952

Entity TypeIndividualFemale

Primary Taxonomy2080N0001X

Provider Legal NameDR. REBECCA Y. PETERSENCredential: MD

Location Address1465 S GRAND BLVDSaint Louis, MO 63104-1003

Mailing Address1465 S Grand BlvdSaint Louis, MO 63104-1003 · (314) 577-5642 · Fax (314) 268-6410

Phone(314) 577-5642

Fax(314) 268-6410

Sole ProprietorNo

Enumeration DateApril 4, 2011

Last NPPES UpdateJanuary 18, 20216 updates tracked since enumeration

NPPES CertifiedJanuary 18, 2021

✔ NPI 1205125952 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Neonatal-Perinatal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code2080N0001X

License✔ Licensed in MO · 2014011522

Definition

A pediatrician who is the principal care provider for sick newborn infants. Clinical expertise is used for direct patient care and for consulting with obstetrical colleagues to plan for the care of mothers who have high-risk pregnancies.

Also ListedPediatricsTaxonomy 208000000X · License 2014011522 (MO)

1465 S GRAND BLVD, Saint Louis, MO 63104

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Other Names 1

Former Name (1)Rebecca Young Md

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan, 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 (PECOS)

Dr. Rebecca Y. Petersen Md 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

Medicare enrollment records show Rebecca Petersen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Ssm Health Care Group

0.2 mi

Internal Medicine

1225 SOUTH GRAND BLVD, 2L - DOOR 3,4
Saint Louis, MO 63104

Reassigned Medicare billing, Missouri enrollment
1,294 clinicians in this Medicare group

NPI 1306589544 (314) 977-6100

Ssm Health Care St. Louis

4.0 mi

Emergency Medicine

6420 CLAYTON RD
Saint Louis, MO 63117

Reassigned Medicare billing, Missouri enrollment
741 clinicians in this Medicare group

NPI 1366400855 (314) 768-8000

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

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.

DR. SARAH MARGARET HANLY PH.D.

Psychologist (Clinical)

1465 S GRAND BLVD
SAINT LOUIS, MO 63104

St. Louis City (314) 577-5667

KAVIPRIYA KOMESWARAN

Pediatrics (Pediatric Critical Care Medicine)

1465 S GRAND BLVD
SAINT LOUIS, MO 63104

St. Louis City (314) 617-2000

ALEXIS HAAS STEWART

Anesthesiologist Assistant

1465 S GRAND BLVD
SAINT LOUIS, MO 63104

St. Louis City (314) 977-5700

NATALIE DRURY RD, LD

Dietitian, Registered (Nutrition, Pediatric)

1465 S GRAND BLVD
SAINT LOUIS, MO 63104

St. Louis City (314) 577-5387

MS. MASHAL AZIZ RANA MBBS

Student in an Organized Health Care Education/Training Program

1465 S GRAND BLVD
ST.LOUIS, MO 63104

St. Louis City (314) 577-5382

TIMOTHY J KUTZ MD

Pediatrics (Child Abuse Pediatrics)

1465 S GRAND BLVD
SAINT LOUIS, MO 63104

St. Louis City (314) 268-6406

CHRISTOPHER SALLEE MD

Pediatrics

1465 S GRAND BLVD
ST. LOUIS, MO 63104

St. Louis City (314) 577-1607

AMBER GRANA DO

Pediatrics (Pediatric Critical Care Medicine)

1465 S GRAND BLVD, DIVISION OF PEDIATRIC CRITICAL CARE
SAINT LOUIS, MO 63104

St. Louis City (314) 577-5695

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 Rebecca Petersen's NPI number?

The NPI number for Rebecca Petersen is 1205125952. It was assigned to this individual provider in the NPPES registry on April 4, 2011. The provider is also known as Rebecca Young MD.

Where is Rebecca Petersen located?

Rebecca Petersen practices at 1465 S Grand Blvd, Saint Louis, MO 63104. The listed phone number is (314) 577-5642.

What is Rebecca Petersen's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Neonatal-Perinatal Medicine, with taxonomy code 2080N0001X.

Is Rebecca Petersen enrolled in Medicare?

Yes. Rebecca Petersen is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Rebecca Petersen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Rebecca Petersen reassigns Medicare benefits to 2 organizations: Ssm Health Care Group (Saint Louis, MO) and Ssm Health Care St. Louis (Saint Louis, MO). 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 Rebecca Petersen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Rebecca Petersen accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan and Ambetter of Oklahoma and 3 other insurers list Rebecca Petersen 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 Rebecca Petersen was last updated on January 18, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.