DR. MARILYN M KIOKO M.D.
NPI 1659632628
Pediatrics in Boston, MA

Q: What is Marilyn Kioko's NPI number?

The NPI number for Marilyn Kioko is 1659632628. It was assigned to this individual provider in the NPPES registry on June 6, 2012.

Q: What is Marilyn Kioko's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Marilyn Kioko was last updated on May 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 months 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 06, 2012PECOS Enrolled

300 LONGWOOD AVE, BOSTON, MA 02115(617) 355-6000 Get Directions Write a Review

NPPES record last updated: May 8, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 8, 2025, Oct 20, 2023, Jul 7, 2023 and 2 more (5 updates tracked since 2019).

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About Dr. Marilyn M Kioko M.d. NPPES

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

DR. MARILYN M KIOKO M.D. (NPI 1659632628) is an individual pediatrics provider in Boston, Massachusetts, licensed in Massachusetts (1022348) and active in the NPI registry since June 2012. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1659632628

Entity TypeIndividualFemale

Primary Taxonomy208000000X

Provider Legal NameDR. MARILYN M KIOKOCredential: M.D.

Location Address300 LONGWOOD AVEBoston, MA 02115-5724

Mailing Address300 Longwood AveBoston, MA 02115-5724 · (617) 355-6000

Phone(617) 355-6000

Sole ProprietorNo

Enumeration DateJune 6, 2012

Last NPPES UpdateMay 8, 20255 updates tracked since enumeration

NPPES CertifiedMay 8, 2025

✔ NPI 1659632628 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

License✔ Licensed in MA · 1022348

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.

300 LONGWOOD AVE, Boston, MA 02115

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections 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. Marilyn M Kioko 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 Reassignment

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

Guam Memorial Hospital

General Acute Care Hospital

850 GOVERNOR CARLOS CAMACHO ROAD
Oka Tamuning, GU 96913

Reassigned Medicare billing, Guam enrollment
320 clinicians in this Medicare group

NPI 1366519027 (671) 647-2937

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 02115 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

$97.64 typical visit price

range $63.72 – $189.86

Typical copayment $24.41 (range $15.93 – $47.46)

Most-billed visit code 99203

Established Patient

$111.18 typical visit price

range $21.07 – $155.29

Typical copayment $27.79 (range $5.26 – $38.82)

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.

JULIE ANN HANSEN LCSW

Social Worker (Clinical)

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (857) 218-4309

MS. ANNA ROGLIERI

Nurse Practitioner (Psychiatric/Mental Health)

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 355-6000

STEPHEN G. FLYNN M.D.

Anesthesiology (Pediatric Anesthesiology)

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 355-6000

MRS. LAUREN ASHLEY SHARIS P.T., D.P.T

Physical Therapist

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 355-7216

MS. SOYUN KWAN LICSW

Social Worker (Clinical)

300 LONGWOOD AVE, CHILDREN'S HOSPITAL BOSTON
BOSTON, MA 02115

Suffolk County (617) 355-0567

PUJA BANKA M.D.

Pediatrics

300 LONGWOOD AVE, BADER 203
BOSTON, MA 02115

Suffolk County (617) 355-6363

MR. COURTNEY SULLIVAN FRATTO CPNP

Nurse Practitioner (Pediatrics)

300 LONGWOOD AVE, HUNNEWELL BUILDING 322
BOSTON, MA 02115

Suffolk County (857) 218-4085

DR. ELIZABETH S TAGLAUER M.D., PH.D.

Pediatrics (Neonatal-Perinatal Medicine)

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 355-6000

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 Marilyn Kioko's NPI number?

The NPI number for Marilyn Kioko is 1659632628. It was assigned to this individual provider in the NPPES registry on June 6, 2012.

Where is Marilyn Kioko located?

Marilyn Kioko practices at 300 Longwood Ave, Boston, MA 02115. The listed phone number is (617) 355-6000.

What is Marilyn Kioko's specialty?

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

Is Marilyn Kioko enrolled in Medicare?

Yes. Marilyn Kioko is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Marilyn Kioko's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marilyn Kioko reassigns Medicare benefits to Guam Memorial Hospital (Oka Tamuning, GU). 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 Marilyn Kioko's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Marilyn Kioko accept?

Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 4 other insurers list Marilyn Kioko 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 Marilyn Kioko was last updated on May 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 months 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.