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SIERRA R WALLACE MD
NPI 1134869340
Internal Medicine in Boston, MA

Active since March 29, 2022PECOS EnrolledAccepts Medicare Assignment
801 MASSACHUSETTS AVE, CROSSTOWN 2, BOSTON, MA 02118(617) 414-7399(617) 414-4676 Get Directions Write a Review

NPPES record last updated: October 21, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Sierra R Wallace Md NPPES

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

SIERRA R WALLACE MD (NPI 1134869340) is an individual internal medicine provider in Boston, Massachusetts, licensed in Massachusetts (1023386) and active in the NPI registry since March 2022. She is enrolled in Medicare PECOS, is affiliated with Boston Medical Center, and is a graduate of Drexel University College Of Medicine (2022).

NPPES Registry Identity

NPI1134869340
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameSIERRA R WALLACECredential: MD
Location Address801 MASSACHUSETTS AVE, CROSSTOWN 2Boston, MA 02118-2605
Mailing Address960 Massachusetts Ave Ste 2Boston, MA 02118-2690 · (617) 414-7399 · Fax (617) 414-4676
Phone(617) 414-7399
Fax(617) 414-4676
Sole ProprietorNo
Medical School CMSDrexel University College Of MedicineGraduated 2022
Enumeration DateMarch 29, 2022
Last NPPES UpdateOctober 21, 2025
NPPES CertifiedOctober 21, 2025
✔ NPI 1134869340 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MA · 1023386
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
801 MASSACHUSETTS AVE, Boston, MA 02118
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Sierra R Wallace Md 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 ID2668841974
PECOS Enrollment IDI20250627000802
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.

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 02118 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
$144.11 typical visit price
range $63.72 – $189.86
Typical copayment $36.02 (range $15.93 – $47.46)
Most-billed visit code 99204
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. FELICIA ELIZABETH PATCH MD
Internal Medicine
801 MASSACHUSETTS AVE, CROSSTOWN 2
BOSTON, MA 02118
Suffolk County (617) 414-4376
CORINA ELENA BEINER MARTINEZ
Student in an Organized Health Care Education/Training Program
801 MASSACHUSETTS AVE
BOSTON, MA 02118
Suffolk County (617) 414-5951
MAYERLIN MORLA UBIERA
Counselor (Mental Health)
801 MASSACHUSETTS AVE
BOSTON, MA 02118
Suffolk County (617) 651-2538
XANTHIA ALIX TUCKER MD
Internal Medicine
801 MASSACHUSETTS AVE, SUITE 5A, CROSSTOWN BLDG
BOSTON, MA 02118
Suffolk County (617) 414-5951
DR. JENNIFER K HUGHES M.D.
Internal Medicine (Hospice and Palliative Medicine)
801 MASSACHUSETTS AVE, CROSSTOWN 2
BOSTON, MA 02118
Suffolk County (617) 414-4376
LUCY CURELL
Community Health Worker
801 MASSACHUSETTS AVE
BOSTON, MA 02118
Suffolk County (617) 991-8264
AMOS WU
Internal Medicine
801 MASSACHUSETTS AVE, CROSSTOWN 2
BOSTON, MA 02118
Suffolk County (617) 414-7399
MS. ARCHANA VASUDEVAN DO
Internal Medicine
801 MASSACHUSETTS AVE, CROSSTOWN 2
BOSTON, MA 02118
Suffolk County (617) 414-7399

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 Sierra Wallace's NPI number?

The NPI number for Sierra Wallace is 1134869340. It was assigned to this individual provider in the NPPES registry on March 29, 2022.

Where is Sierra Wallace located?

Sierra Wallace practices at 801 Massachusetts Ave Crosstown 2, Boston, MA 02118. The listed phone number is (617) 414-7399.

What is Sierra Wallace's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Sierra Wallace enrolled in Medicare?

Yes. Sierra Wallace 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.

Is Sierra Wallace affiliated with any hospitals?

According to CMS data, Sierra Wallace is affiliated with Boston Medical Center.

When was this NPI record last updated?

The NPPES record for Sierra Wallace was last updated on October 21, 2025. 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.