DR. MARK C JOHNSON MD
NPI 1497796957
Pediatrics - Pediatric Cardiology in Saint Louis, MO

Q: What is Mark Johnson's NPI number?

The NPI number for Mark Johnson is 1497796957. It was assigned to this individual provider in the NPPES registry on June 8, 2006.

Q: What is Mark Johnson's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Cardiology, with taxonomy code 2080P0202X.

Q: When was this NPI record last updated?

The NPPES record for Mark Johnson was last updated on April 25, 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.

Active since June 08, 2006PECOS Enrolled

79.29/100

CMS Quality Rating

1 CHILDRENS PL, DIV PED CARDIOLOGY, SAINT LOUIS, MO 63110(314) 454-6095(314) 454-2561 Get Directions Write a Review

NPPES record last updated: April 25, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 25, 2024, Apr 10, 2024, Nov 15, 2021 and 3 more (6 updates tracked since 2016).

On this page

About Dr. Mark C Johnson Md NPPES

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

DR. MARK C JOHNSON MD (NPI 1497796957) is an individual pediatric cardiology provider in Saint Louis, Missouri, licensed in Missouri (102902) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1497796957

Entity TypeIndividualMale

Primary Taxonomy2080P0202X

Provider Legal NameDR. MARK C JOHNSONCredential: MD

Location Address1 CHILDRENS PL, DIV PED CARDIOLOGYSaint Louis, MO 63110-1002

Mailing AddressPo Box 60352Saint Louis, MO 63160-0352 · (314) 454-6095 · Fax (314) 454-2561

Phone(314) 454-6095

Fax(314) 454-2561

Sole ProprietorNo

Enumeration DateJune 8, 2006

Last NPPES UpdateApril 25, 20246 updates tracked since enumeration

✔ NPI 1497796957 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Pediatric CardiologyAllopathic & Osteopathic Physicians

Taxonomy Code2080P0202X

License✔ Licensed in MO · 102902

Definition

A pediatric cardiologist provides comprehensive care to patients with cardiovascular problems. This specialist is skilled in selecting, performing and evaluating the structural and functional assessment of the heart and blood vessels, and the clinical evaluation of cardiovascular disease.

Also ListedPediatricsTaxonomy 208000000X · License 102902 (MO)

1 CHILDRENS PL, Saint Louis, MO 63110

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Other Identifiers 1

Medicaid206911802MO

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mark C Johnson 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 Reassignment

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

Washington University Physicians In Illinois, Inc

0.2 mi

Multi-Specialty

4901 FOREST PARK AVE STE 341
Saint Louis, MO 63108

Reassigned Medicare billing, Illinois enrollment
530 clinicians in this Medicare group

NPI 1457203135 (314) 454-8181

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

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

79.29/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

71.46

Promoting Interoperability

100

Improvement Activities

Cost

59.51

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.

ARIE BAKER MSW, LCSW

Social Worker (Clinical)

1 CHILDRENS PL, CAMPUS BOX 8116
SAINT LOUIS, MO 63110

St. Louis City (314) 747-6169

SUSAN CHEUNG WALSH AUD

Audiologist-Hearing Aid Fitter

1 CHILDRENS PL
SAINT LOUIS, MO 63110

St. Louis City (314) 454-4649

MS. JENNIFER MARIE JACOBI PNP

Nurse Practitioner (Pediatrics)

1 CHILDRENS PL, DEPT NEUROLOGICAL SURGERY, STE 4E
SAINT LOUIS, MO 63110

St. Louis City (314) 362-3577

MS. EMILY LINCOLN RN, NNP-BC

Nurse Practitioner (Neonatal, Critical Care)

1 CHILDRENS PL
SAINT LOUIS, MO 63110

St. Louis City (314) 454-6000

MS. MARISSA ROSE PEREZ-MAGNELLI PNP

Nurse Practitioner (Pediatrics)

1 CHILDRENS PL, DEPT NEUROLOGY, STE 2130
SAINT LOUIS, MO 63110

St. Louis City (314) 454-6120

MRS. BRIANNA LYNN RICHTER NNP-BC

Nurse Practitioner (Neonatal)

1 CHILDRENS PL
SAINT LOUIS, MO 63110

St. Louis City (314) 454-6000

DR. WILLIAM L RIVES MD

Hospitalist

1 CHILDRENS PL, DIV PED HOSPITALIST MED
SAINT LOUIS, MO 63110

St. Louis City (314) 454-2076

DR. PETER M KILBRIDGE MD

Pediatrics

1 CHILDRENS PL, SUITE C
SAINT LOUIS, MO 63110

St. Louis City (314) 454-2479

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 Mark Johnson's NPI number?

The NPI number for Mark Johnson is 1497796957. It was assigned to this individual provider in the NPPES registry on June 8, 2006.

Where is Mark Johnson located?

Mark Johnson practices at 1 Childrens Pl Div Ped Cardiology, Saint Louis, MO 63110. The listed phone number is (314) 454-6095.

What is Mark Johnson's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Cardiology, with taxonomy code 2080P0202X.

Is Mark Johnson enrolled in Medicare?

Yes. Mark Johnson is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mark Johnson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Johnson reassigns Medicare benefits to Washington University Physicians In Illinois, Inc (Saint Louis, MO). 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 Mark Johnson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Mark Johnson was last updated on April 25, 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.