1. Home
  2. Directory
  3. Massachusetts
  4. Boston
  5. Nurse Practitioner
  6. NPI Profile

MS. SHANNON L AVERY-DESMARAIS MSN, NP-C
NPI 1053713453
Nurse Practitioner - Adult Health in Boston, MA

Active since September 17, 2014PECOS EnrolledAccepts Medicare Assignment
450 BROOKLINE AVE, BOSTON, MA 02215(617) 632-6464 Get Directions Write a Review

NPPES record last updated: January 6, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jan 6, 2026, Jul 11, 2022, Apr 20, 2020 (3 updates tracked since 2020).

About Ms. Shannon L Avery-desmarais Msn, Np-c NPPES

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

MS. SHANNON L AVERY-DESMARAIS MSN, NP-C (NPI 1053713453) is an individual adult health provider in Boston, Massachusetts, licensed in Massachusetts (RN269120) and active in the NPI registry since September 2014. She is enrolled in Medicare PECOS and is a graduate of University Of Massachusetts Medical School (2014).

NPPES Registry Identity

NPI1053713453
Entity TypeIndividualFemale
Primary Taxonomy363LA2200X
Provider Legal NameMS. SHANNON L AVERY-DESMARAISCredential: MSN, NP-C
Location Address450 BROOKLINE AVEBoston, MA 02215-5450
Mailing Address200 Mill Rd Ste 180Fairhaven, MA 02719-5255 · (508) 973-2000 · Fax (508) 973-2001
Phone(617) 632-6464
Sole ProprietorNo
Medical School CMSUniversity Of Massachusetts Medical SchoolGraduated 2014
Enumeration DateSeptember 17, 2014
Last NPPES UpdateJanuary 6, 20263 updates tracked since enumeration
NPPES CertifiedJanuary 6, 2026
✔ NPI 1053713453 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Adult HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LA2200X
License✔ Licensed in MA · RN269120
450 BROOKLINE AVE, Boston, MA 02215
Open in Google Maps ↗

Other Identifiers 1

Medicaid110101239AMA

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 and accepts Medicare assignment

Ms. Shannon L Avery-desmarais Msn, Np-c 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 ID7012138860
PECOS Enrollment IDI20230209000753
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

3

Medicare enrollment records show Shannon Avery-desmarais reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Dana-Farber Cancer Institute, Inc.
0.1 mi
Special Hospital
75 FRANCIS ST
Boston, MA 02115
  • Reassigned Medicare billing, Massachusetts enrollment
  • 531 clinicians in this Medicare group
NPI 1346433257 (617) 635-6904
Hopehealth Hospice & Palliative Care
20 mi
General Practice
1324 BELMONT ST STE 202
Brockton, MA 02301
  • Reassigned Medicare billing, Massachusetts and Rhode Island enrollments
  • Also billed through NPI 1790851590 (Rhode Island)
  • 24 clinicians in this Medicare group
NPI 1720405988 (508) 957-0200
Southcoast Physicians Group, Inc.
49 mi
Emergency Medicine
208 MILL RD
Fairhaven, MA 02719
  • Reassigned Medicare billing, Massachusetts enrollment
  • 1,144 clinicians in this Medicare group
NPI 1861830143 (855) 319-0518

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 5

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.

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
36 services35 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
17 services16 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
15 services15 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
13 services13 patients
Advance care planning, first 30 minutes 99497
Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.
13 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02215 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.

PRABHSIMRANJOT SINGH MD
Internal Medicine (Hematology & Oncology)
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 582-7956
SHAWN MAGUIRE PA-C
Physician Assistant
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 582-8487
KARINA FRANCA
Genetic Counselor, MS
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (857) 215-2285
DR. SUZANNE JAQUETH FORREST M.D.
Pediatrics (Pediatric Hematology-Oncology)
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 632-3270
LAUREN KIRITSY MSW, LCSW
Counselor (Mental Health)
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (857) 215-3448
OFIR WOLAJ MD
Internal Medicine (Hematology & Oncology)
450 BROOKLINE AVE, DANA 2058
BOSTON, MA 02215
Suffolk County (617) 632-6139
JASON BATALHA AGPCNP-BC
Nurse Practitioner
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 632-6140
FATIMA EMRAN AMIR MS, LGC
Genetic Counselor, MS
450 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 632-3729

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 Shannon Avery-desmarais's NPI number?

The NPI number for Shannon Avery-desmarais is 1053713453. It was assigned to this individual provider in the NPPES registry on September 17, 2014.

Where is Shannon Avery-desmarais located?

Shannon Avery-desmarais practices at 450 Brookline Ave, Boston, MA 02215. The listed phone number is (617) 632-6464.

What is Shannon Avery-desmarais's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.

Is Shannon Avery-desmarais enrolled in Medicare?

Yes. Shannon Avery-desmarais 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 Shannon Avery-desmarais's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Shannon Avery-desmarais reassigns Medicare benefits to 3 organizations: Dana-Farber Cancer Institute, Inc. (Boston, MA), Hopehealth Hospice & Palliative Care (Brockton, MA) and Southcoast Physicians Group, Inc. (Fairhaven, 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 Shannon Avery-desmarais's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Shannon Avery-desmarais accept?

Health plans from Taro Health list Shannon Avery-desmarais 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 Shannon Avery-desmarais was last updated on January 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.