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DR. MARGARET KOOS M.D.
NPI 1952715427
Pediatrics in Des Moines, IA

Active since June 12, 2014PECOS Enrolled
1200 PLEASANT ST, DES MOINES, IA 50309(515) 241-6611 Get Directions Write a Review

NPPES record last updated: June 14, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jun 14, 2024, Jul 21, 2022, Aug 16, 2017 and 1 more (4 updates tracked since 2015).

About Dr. Margaret Koos M.d. NPPES

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

DR. MARGARET KOOS M.D. (NPI 1952715427) is an individual pediatrics provider in Des Moines, Iowa, licensed in Iowa (R-10065) and active in the NPI registry since June 2014. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1952715427
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameDR. MARGARET KOOSCredential: M.D.
Location Address1200 PLEASANT STDes Moines, IA 50309-1406
Mailing Address1200 Pleasant Street, Blank Children's Emergency DepartmentDes Moines, IA 50309 · (515) 241-6611
Phone(515) 241-6611
Sole ProprietorNo
Enumeration DateJune 12, 2014
Last NPPES UpdateJune 14, 20244 updates tracked since enumeration
NPPES CertifiedJune 7, 2024
✔ NPI 1952715427 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
Licenses✔ Licensed in IA · R-10065✔ Licensed in MO · 2017026546✔ Licensed in KS · 04-40234
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
1200 PLEASANT ST, Des Moines, IA 50309
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Margaret Koos M.d. 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

2

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

Central Iowa Hospital Corporation
Same address
Pediatrics
1200 PLEASANT ST
Des Moines, IA 50309
  • Reassigned Medicare billing, Iowa enrollment
  • 545 clinicians in this Medicare group
NPI 1144309188 (515) 241-5926
Iowa Physicians Clinic Medical Foundation
6.6 mi
General Practice
8101 BIRCHWOOD CT, SUITE N
Johnston, IA 50131
  • Reassigned Medicare billing, Iowa enrollment
  • 1,506 clinicians in this Medicare group
NPI 1619309325 (515) 471-9300

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 50309 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
$81.84 typical visit price
range $52.96 – $161.40
Typical copayment $20.46 (range $13.24 – $40.35)
Most-billed visit code 99203
Established Patient
$94.05 typical visit price
range $16.91 – $131.98
Typical copayment $23.51 (range $4.22 – $32.99)
Most-billed visit code 99214
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.

CENTRAL IOWA HOSPITAL CORPORATION
Pharmacy
1200 PLEASANT ST
DES MOINES, IA 50309
Polk County (515) 241-5936
CATHERINE P MCNEILL M.D.
Pediatrics
1200 PLEASANT ST
DES MOINES, IA 50309
Polk County (515) 241-6611
CENTRAL IOWA HOSPITAL CORPORATION
Rehabilitation Unit
1200 PLEASANT ST
DES MOINES, IA 50309
Polk County (515) 241-6212
DR. LISA I HARDISTY M.D.
Pediatrics
1200 PLEASANT ST
DES MOINES, IA 50309
Polk County (515) 241-5926
BROOKE JOHNSON D.O.
Emergency Medicine
1200 PLEASANT ST
DES MOINES, IA 50309
Polk County (515) 241-6262
JAMIE LYNN PIOTROWSKI NP-C
Nurse Practitioner
1200 PLEASANT ST
DES MOINES, IA 50309
Polk County (515) 524-1621
BILAL HASAN BAIG DO
Internal Medicine
1200 PLEASANT ST
DES MOINES, IA 50309
Polk County (515) 241-6636
HOLLEY A BZDEGA MD
Pediatrics (Neonatal-Perinatal Medicine)
1200 PLEASANT ST, NEONATOLOGY
DES MOINES, IA 50309
Polk County (515) 241-4444

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 Margaret Koos's NPI number?

The NPI number for Margaret Koos is 1952715427. It was assigned to this individual provider in the NPPES registry on June 12, 2014.

Where is Margaret Koos located?

Margaret Koos practices at 1200 Pleasant St, Des Moines, IA 50309. The listed phone number is (515) 241-6611.

What is Margaret Koos's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Margaret Koos enrolled in Medicare?

Yes. Margaret Koos is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Margaret Koos's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Koos reassigns Medicare benefits to 2 organizations: Central Iowa Hospital Corporation (Des Moines, IA) and Iowa Physicians Clinic Medical Foundation (Johnston, IA). 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 Margaret Koos'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 Margaret Koos was last updated on June 14, 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.