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ERIKA CHRISTIAN SIMSHAUSER CNP
NPI 1114642709
Nurse Practitioner in Boston, MA

Active since October 06, 2022PECOS Enrolled
800 WASHINGTON ST # 2111, BOSTON, MA 02111(617) 636-5000 Get Directions Write a Review

NPPES record last updated: October 6, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Erika Christian Simshauser Cnp NPPES

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

ERIKA CHRISTIAN SIMSHAUSER CNP (NPI 1114642709) is an individual nurse practitioner in Boston, Massachusetts, licensed in Massachusetts (RN2299040) and active in the NPI registry since October 2022. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1114642709
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameERIKA CHRISTIAN SIMSHAUSERCredential: CNP
Location Address800 WASHINGTON ST # 2111Boston, MA 02111-1552
Mailing Address2 Repton Cir Unit 2215Watertown, MA 02472-2495 · (781) 243-9199
Phone(617) 636-5000
Sole ProprietorNo
Enumeration DateOctober 6, 2022
NPPES CertifiedOctober 6, 2022
✔ NPI 1114642709 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in MA · RN2299040
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
800 WASHINGTON ST # 2111, Boston, MA 02111
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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)

Erika Christian Simshauser Cnp 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 Erika Simshauser reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Dana-Farber Cancer Institute, Inc.
2.4 mi
General Acute Care Hospital
450 BROOKLINE AVE
Boston, MA 02215
  • Reassigned Medicare billing, Massachusetts enrollment
  • 1,026 clinicians in this Medicare group
NPI 1851333686 (617) 632-3000

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

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
75 services62 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
19 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02111 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

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

SEBASTIAN BARROS
Student in an Organized Health Care Education/Training Program
800 WASHINGTON ST # 2111
BOSTON, MA 02111
Suffolk County (617) 636-5000

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 Erika Simshauser's NPI number?

The NPI number for Erika Simshauser is 1114642709. It was assigned to this individual provider in the NPPES registry on October 6, 2022.

Where is Erika Simshauser located?

Erika Simshauser practices at 800 Washington St # 2111, Boston, MA 02111. The listed phone number is (617) 636-5000.

What is Erika Simshauser's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Erika Simshauser enrolled in Medicare?

Yes. Erika Simshauser is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Erika Simshauser's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Erika Simshauser reassigns Medicare benefits to Dana-Farber Cancer Institute, Inc. (Boston, MA). 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 Erika Simshauser'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 Erika Simshauser was last updated on October 6, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.