1. Home
  2. Directory
  3. Massachusetts
  4. Boston
  5. Internal Medicine
  6. NPI Profile

PEIYUN NI MD
NPI 1386270304
Internal Medicine - Gastroenterology in Boston, MA

Active since March 21, 2020PECOS Enrolled

NPPES record last updated: March 17, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Mar 17, 2026, Jun 3, 2020, Mar 21, 2020 (3 updates tracked since 2020).

About Peiyun Ni Md NPPES

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

PEIYUN NI MD (NPI 1386270304) is an individual gastroenterology provider in Boston, Massachusetts, licensed in Massachusetts (1018921) and active in the NPI registry since March 2020. She is enrolled in Medicare PECOS and is a graduate of Harvard Medical School (2020).

NPPES Registry Identity

NPI1386270304
Entity TypeIndividualFemale
Primary Taxonomy207RG0100X
Provider Legal NamePEIYUN NICredential: MD
Location Address55 FRUIT STBoston, MA 02114-2696
Mailing Address55 Fruit StBoston, MA 02114-2621
Phone(617) 726-2000
Sole ProprietorNo
Medical School CMSHarvard Medical SchoolGraduated 2020
Enumeration DateMarch 21, 2020
Last NPPES UpdateMarch 17, 20263 updates tracked since enumeration
NPPES CertifiedMarch 17, 2026
✔ NPI 1386270304 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in MA · 1018921
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
55 FRUIT ST, Boston, MA 02114
Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Peiyun Ni Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID547670291
PECOS Enrollment IDI20260325003356
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02114 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.

STUTI GIRISH SHROFF MD, MBBS
Pathology (Anatomic Pathology)
55 FRUIT ST
BOSTON, MA 02114
Suffolk County (617) 726-2971
NANCY WANG M.D.
Internal Medicine (Hematology & Oncology)
55 FRUIT ST
BOSTON, MA 02114
Suffolk County (017) 724-4000
DR. DUSAN HANIDZIAR M.D., PH.D.
Anesthesiology
55 FRUIT ST, GRAY-BIGELOW 444
BOSTON, MA 02114
Suffolk County (617) 726-3030
JOHN JOSEPH DANKO DO
Physical Medicine & Rehabilitation
55 FRUIT ST
BOSTON, MA 02114
Suffolk County (617) 726-2000
DR. MICHAEL ANDREW LOBRITZ M.D, PH.D.
Internal Medicine (Infectious Disease)
55 FRUIT ST, DIVISION OF INFECTIOUS DISEASE, GRJ-504
BOSTON, MA 02114
Suffolk County (617) 724-9248
MS. KELLY ELISHA TRECARTIN NP
Nurse Practitioner (Acute Care)
55 FRUIT ST, BIGALOW 852 F
BOSTON, MA 02114
Suffolk County (617) 726-7400
JAMIE MARIE ALLEN NP
Nurse Practitioner
55 FRUIT ST
BOSTON, MA 02114
Suffolk County (617) 724-4410
DR. DHAVAL SANJEEV KOLTE M.B.B.S., PH.D.
Internal Medicine (Cardiovascular Disease)
55 FRUIT ST
BOSTON, MA 02114
Suffolk County (617) 643-3238

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 Peiyun Ni's NPI number?

The NPI number for Peiyun Ni is 1386270304. It was assigned to this individual provider in the NPPES registry on March 21, 2020.

Where is Peiyun Ni located?

Peiyun Ni practices at 55 Fruit St, Boston, MA 02114. The listed phone number is (617) 726-2000.

What is Peiyun Ni's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Peiyun Ni enrolled in Medicare?

Yes. Peiyun Ni is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Peiyun Ni was last updated on March 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.