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WEIZHEN TAN MD
NPI 1952693418
Pediatrics - Pediatric Nephrology in Boston, MA

Active since May 03, 2011PECOS EnrolledAccepts Medicare Assignment
55 FRUIT ST, MASSACHUSETTS GENERAL HOSPITAL, BOSTON, MA 02114(617) 726-2908(617) 643-9141 Get Directions Write a Review

NPPES record last updated: August 6, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 6, 2025, Jun 17, 2025, Feb 5, 2024 and 2 more (5 updates tracked since 2017).

About Weizhen Tan Md NPPES

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

WEIZHEN TAN MD (NPI 1952693418) is an individual pediatric nephrology provider in Boston, Massachusetts, licensed in Massachusetts (258478) and active in the NPI registry since May 2011. He is enrolled in Medicare PECOS, maintains a secondary practice location in Worcester, and is a graduate of University Of Massachusetts Medical School (2011).

NPPES Registry Identity

NPI1952693418
Entity TypeIndividualMale
Primary Taxonomy2080P0210X
Provider Legal NameWEIZHEN TANCredential: MD
Location Address55 FRUIT ST, MASSACHUSETTS GENERAL HOSPITALBoston, MA 02114-2621
Mailing Address55 Fruit St, Yawkey 6cBoston, MA 02114-2696 · (617) 726-2908 · Fax (617) 643-9141
Phone(617) 726-2908
Fax(617) 643-9141
Sole ProprietorYes
Medical School CMSUniversity Of Massachusetts Medical SchoolGraduated 2011
Enumeration DateMay 3, 2011
Last NPPES UpdateAugust 6, 20255 updates tracked since enumeration
NPPES CertifiedAugust 6, 2025
✔ NPI 1952693418 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0210X
License✔ Licensed in MA · 258478
Definition
A pediatrician who deals with the normal and abnormal development and maturation of the kidney and urinary tract, the mechanisms by which the kidney can be damaged, the evaluation and treatment of renal diseases, fluid and electrolyte abnormalities, hypertension and renal replacement therapy.
55 FRUIT ST, Boston, MA 02114
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Secondary Practice Location 1

Location 155 Lake Ave NWorcester, MA 01655-0002 · Phone (774) 442-2131 · Fax (774) 441-8004

Accepted Insurance

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

Weizhen Tan 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 ID7416227194
PECOS Enrollment IDI20170728000994
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

6

Medicare enrollment records show Weizhen Tan reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Massachusetts General Physicians Organization Inc
Same address
Dermatology
55 FRUIT ST, BUL 2
Boston, MA 02114
  • Reassigned Medicare billing, Massachusetts and New Hampshire enrollments
  • 6,360 clinicians in this Medicare group
NPI 1801874573 (617) 724-0287
The General Hospital Corporation
Same address
General Acute Care Hospital
55 FRUIT ST, BULFINCH 360
Boston, MA 02114
  • Reassigned Medicare billing, Massachusetts enrollment
  • 6,234 clinicians in this Medicare group
NPI 1023049236 (617) 726-2000
Children's Hospital Pediatric Associates, Inc
2.6 mi
Pediatrics
300 LONGWOOD AVE
Boston, MA 02115
  • Reassigned Medicare billing, Massachusetts enrollment
  • 1,358 clinicians in this Medicare group
NPI 1457306664 (617) 355-6000
Mass General Brigham Medical Group Suburban Massachusetts Inc
9.4 mi
Family Medicine
2014 WASHINGTON STREET
Newton, MA 02462
  • Reassigned Medicare billing, Massachusetts enrollment
  • 992 clinicians in this Medicare group
NPI 1538191218 (617) 243-6262
Umass Memorial Medical Group Inc
36 mi
Internal Medicine
55 LAKE AVE N
Worcester, MA 01655
  • Reassigned Medicare billing, Massachusetts enrollment
  • 2,902 clinicians in this Medicare group
NPI 1760445373 (508) 334-1000
Maniilaq Association
3,473 mi
Public Health, Federal
51003 MAIN ST.
Kobuk, AK 99751
  • Reassigned Medicare billing, Alaska and Texas enrollments
  • 100 clinicians in this Medicare group
NPI 1265709901 (907) 948-2221

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

Referred Medical Equipment & Supplies CMS DME claims 4

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Tacrolimus, immediate release, oral, 1 mg J7507
Treatment-Treatment - Miscellaneous · category RX029N
4 suppliers30 claims9,665 services$0.34 avg. paid by Medicare
Mycophenolate mofetil, oral, 250 mg J7517
Treatment-Treatment - Miscellaneous · category RX029N
3 suppliers23 claims4,592 services$0.19 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511
Treatment-Chemotherapy · category RH012N
4 suppliers29 claims29 services$18.34 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for a subsequent prescription in a 30-day period Q0512
Treatment-Chemotherapy · category RH012N
4 suppliers34 claims44 services$12.38 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Weizhen Tan's NPI number?

The NPI number for Weizhen Tan is 1952693418. It was assigned to this individual provider in the NPPES registry on May 3, 2011.

Where is Weizhen Tan located?

Weizhen Tan practices at 55 Fruit St Massachusetts General Hospital, Boston, MA 02114. The listed phone number is (617) 726-2908.

What is Weizhen Tan's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Nephrology, with taxonomy code 2080P0210X.

Is Weizhen Tan enrolled in Medicare?

Yes. Weizhen Tan 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 Weizhen Tan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Weizhen Tan reassigns Medicare benefits to 6 organizations: Massachusetts General Physicians Organization Inc (Boston, MA), The General Hospital Corporation (Boston, MA), Children's Hospital Pediatric Associates, Inc (Boston, MA), Mass General Brigham Medical Group Suburban Massachusetts Inc (Newton, MA), Umass Memorial Medical Group Inc (Worcester, MA) and 1 more organization, listed in the Medicare section above. 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 Weizhen Tan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Weizhen Tan accept?

Health plans from Taro Health and WellSense Health Plan list Weizhen Tan 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 Weizhen Tan was last updated on August 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.