KATE MYSAK CRNP
NPI 1801262050
Nurse Practitioner - Pediatrics in Boston, MA

Q: What is Kate Mysak's NPI number?

The NPI number for Kate Mysak is 1801262050. It was assigned to this individual provider in the NPPES registry on August 11, 2015.

Q: What is Kate Mysak's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.

Q: When was this NPI record last updated?

The NPPES record for Kate Mysak was last updated on December 4, 2020. 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 August 11, 2015PECOS Enrolled

300 LONGWOOD AVE # FEGAN9, BOSTON, MA 02115(617) 355-7970 Get Directions Write a Review

NPPES record last updated: December 4, 2020. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Dec 4, 2020, Apr 24, 2018 (2 updates tracked since 2018).

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About Kate Mysak Crnp NPPES

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

KATE MYSAK CRNP (NPI 1801262050) is an individual pediatrics provider in Boston, Massachusetts, licensed in Massachusetts (RN2320642) and active in the NPI registry since August 2015. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1801262050

Entity TypeIndividualFemale

Primary Taxonomy363LP0200X

Provider Legal NameKATE MYSAKCredential: CRNP

Location Address300 LONGWOOD AVE # FEGAN9Boston, MA 02115-5724

Mailing Address300 Longwood Ave # Fegan9Boston, MA 02115-5724 · (176) 355-7970

Phone(617) 355-7970

Sole ProprietorNo

Enumeration DateAugust 11, 2015

Last NPPES UpdateDecember 4, 20202 updates tracked since enumeration

NPPES CertifiedDecember 3, 2020

✔ NPI 1801262050 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · PediatricsPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LP0200X

Licenses✔ Licensed in MA · RN2320642✔ Licensed in MD · R186811

300 LONGWOOD AVE # FEGAN9, Boston, MA 02115

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Taro Health.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Kate Mysak Crnp 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 Kate Mysak reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Chmc Otolaryngologic Foundation, Inc

Same address

Otolaryngology

300 LONGWOOD AVE
Boston, MA 02115

Reassigned Medicare billing, Massachusetts enrollment
79 clinicians in this Medicare group

NPI 1124118229 (617) 355-6460

C H Neurology Foundation Inc

Same address

Neurology with Special Qualifications in Child Neurology

300 LONGWOOD AVE, FEGAN 11
Boston, MA 02115

Reassigned Medicare billing, Massachusetts enrollment
153 clinicians in this Medicare group

NPI 1063432417 (617) 355-6388

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 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MOHAMMED ADNAN D ASHOUR MD

Student in an Organized Health Care Education/Training Program

300 LONGWOOD AVE # FEGAN9
BOSTON, MA 02115

Suffolk County (617) 355-2413

JOSEPH PAUL HARMON D.O.

Psychiatry & Neurology (Neurology with Special Qualifications in Child Neurology)

300 LONGWOOD AVE # FEGAN9
BOSTON, MA 02115

Suffolk County (617) 355-7970

DR. ALYSSA S AILION PHD

Clinical Neuropsychologist

300 LONGWOOD AVE # FEGAN9
BOSTON, MA 02115

Suffolk County (617) 355-7970

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 Kate Mysak's NPI number?

The NPI number for Kate Mysak is 1801262050. It was assigned to this individual provider in the NPPES registry on August 11, 2015.

Where is Kate Mysak located?

Kate Mysak practices at 300 Longwood Ave # Fegan9, Boston, MA 02115. The listed phone number is (617) 355-7970.

What is Kate Mysak's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.

Is Kate Mysak enrolled in Medicare?

Yes. Kate Mysak is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Kate Mysak's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kate Mysak reassigns Medicare benefits to 2 organizations: Chmc Otolaryngologic Foundation, Inc (Boston, MA) and C H Neurology Foundation Inc (Boston, 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 Kate Mysak's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Kate Mysak accept?

Health plans from Taro Health list Kate Mysak 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 Kate Mysak was last updated on December 4, 2020. 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.