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MARILYNN PHUNG-KOLCZEWSKI NP
NPI 1538993431
Nurse Practitioner - Family in Boston, MA

Active since September 02, 2024PECOS EnrolledAccepts Medicare Assignment
10 GOVE ST, BOSTON, MA 02128(617) 569-5800(617) 568-4510 Get Directions Write a Review

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

Record update history: Aug 8, 2025, Sep 2, 2024 (2 updates tracked since 2024).

About Marilynn Phung-kolczewski Np NPPES

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

MARILYNN PHUNG-KOLCZEWSKI NP (NPI 1538993431) is an individual family provider in Boston, Massachusetts, licensed in Massachusetts (RN2303034) and active in the NPI registry since September 2024. She is enrolled in Medicare PECOS, is affiliated with Boston Medical Center, and is a graduate of Other (2024).

NPPES Registry Identity

NPI1538993431
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameMARILYNN PHUNG-KOLCZEWSKICredential: NP
Location Address10 GOVE STBoston, MA 02128-1920
Mailing Address10 Gove StBoston, MA 02128-1920 · (617) 569-5800 · Fax (617) 568-4510
Phone(617) 569-5800
Fax(617) 568-4510
Sole ProprietorNo
Medical School CMSOtherGraduated 2024
Enumeration DateSeptember 2, 2024
Last NPPES UpdateAugust 8, 20252 updates tracked since enumeration
NPPES CertifiedAugust 8, 2025
✔ NPI 1538993431 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in MA · RN2303034
10 GOVE ST, Boston, MA 02128
Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Marilynn Phung-kolczewski Np 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 ID7810426897
PECOS Enrollment IDI20250121000412
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 Marilynn Phung-kolczewski reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Internal Medical Associates-Ebnhc
Same address
Community Health
10 GOVE ST
East Boston, MA 02128
  • Reassigned Medicare billing, Massachusetts enrollment
  • 577 clinicians in this Medicare group
NPI 1558481879 (617) 569-5800
Brockton Neighborhood Health Center
20 mi
Federally Qualified Health Center (FQHC)
158 PLEASANT STREET
Brockton, MA 02301
  • Reassigned Medicare billing, Massachusetts enrollment
  • 128 clinicians in this Medicare group
NPI 1497148407 (508) 559-6699

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

Hospital Affiliations CMS Care Compare

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

Boston Medical Center

Acute Care Hospitals · Boston, MA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220031
Location1 Boston Medical Center PlaceBoston, MA 02118 · Suffolk County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02128 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.

DR. SUTAPA GHOSH M.D.
Obstetrics & Gynecology
10 GOVE ST
EAST BOSTON, MA 02128
Suffolk County (617) 569-5800
ANU RUPA MEHRA MD
Family Medicine
10 GOVE ST
EAST BOSTON, MA 02128
Suffolk County (617) 569-5800
SHEREEN MOHIUDDIN M.D.
Family Medicine (Geriatric Medicine)
10 GOVE ST
EAST BOSTON, MA 02128
Suffolk County (617) 569-5800
DOMINIQUE CARUSO MURPHY PA-C
Physician Assistant (Medical)
10 GOVE ST
EAST BOSTON, MA 02128
Suffolk County (617) 569-5800
MS. CAITLIN R CROWLEY FNP-BC
Nurse Practitioner (Family)
10 GOVE ST
EAST BOSTON, MA 02128
Suffolk County (617) 569-5800
KARIN LESCHLY M.D.
Family Medicine
10 GOVE ST
EAST BOSTON, MA 02128
Suffolk County (617) 569-5800
LILIANA MANTILLA LMHC
Counselor (Mental Health)
10 GOVE ST
EAST BOSTON, MA 02128
Suffolk County (617) 569-5800
ARILENE I. HERNANDEZ LCSW
Social Worker (Clinical)
10 GOVE ST
EAST BOSTON, MA 02128
Suffolk County (617) 569-5800

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 Marilynn Phung-kolczewski's NPI number?

The NPI number for Marilynn Phung-kolczewski is 1538993431. It was assigned to this individual provider in the NPPES registry on September 2, 2024.

Where is Marilynn Phung-kolczewski located?

Marilynn Phung-kolczewski practices at 10 Gove St, Boston, MA 02128. The listed phone number is (617) 569-5800.

What is Marilynn Phung-kolczewski's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Marilynn Phung-kolczewski enrolled in Medicare?

Yes. Marilynn Phung-kolczewski 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.

Which organizations bill Medicare for Marilynn Phung-kolczewski's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marilynn Phung-kolczewski reassigns Medicare benefits to 2 organizations: Internal Medical Associates-Ebnhc (East Boston, MA) and Brockton Neighborhood Health Center (Brockton, MA). 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 Marilynn Phung-kolczewski's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Marilynn Phung-kolczewski affiliated with any hospitals?

According to CMS data, Marilynn Phung-kolczewski is affiliated with Boston Medical Center.

When was this NPI record last updated?

The NPPES record for Marilynn Phung-kolczewski was last updated on August 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.