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Hematology/Oncology

Mahesh Pandey, MD

Works at hospitals in Boston, MA · South Weymouth, MA · Massachusetts

Summary

Dr. Mahesh Pandey, MD is a hematologist-oncologist at 101 Columbian St, South Weymouth, MA 02190. Phone: (781) 340-8000. Accepts Medicare assignment. In 2024, Mahesh Pandey had 573 Original Medicare patients and 1,297 services. NPI 1164618757. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Hematologist-oncologist (Medicare lists Hematology/Oncology)
  • Address: 101 Columbian St, South Weymouth, MA 02190 · Directions (1 more location)
  • Phone: (781) 340‑8000
  • Medicare: Accepts Medicare assignment
  • Hospitals: Brigham and Women's Hospital, South Shore Hospital
  • Group practice: Dana-Farber Cancer Institute, Inc.
  • Medical school: graduated 2000 (26 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Mahesh Pandey, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Mahesh Pandey accept Medicare assignment?
Yes. Medicare's clinician data says Mahesh Pandey accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Mahesh Pandey see?
In 2024, CMS data shows 573 Original Medicare patients and 1,297 services for Mahesh Pandey. This counts Original Medicare only and measures volume, not quality.
What is Mahesh Pandey's NPI number?
1164618757. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Mahesh Pandey, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients573
Services billed to Medicare1,297
Different services or procedures11
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)579 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)570 services
  3. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)84 services
  4. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)20 services
  5. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)15 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)46%
  • Arthritis45%
  • Ischemic heart disease35%
  • Anxiety32%

Hospitals where Mahesh Pandey works

Medicare's Facility Affiliation Data lists Mahesh Pandey at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Brigham and Women's HospitalBoston, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220110
  • South Shore HospitalSouth Weymouth, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220100

Practice locations

Addresses where Mahesh Pandey is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Mahesh Pandey as a member of this group (CMS data updated October 2, 2026).

  • Dana-Farber Cancer Institute, Inc.684 clinicians in the group

Specialties

Find other Hematology/Oncology doctors in Massachusetts →

Other hematologist-oncologists in South Weymouth

Clinicians with the same Medicare primary specialty in South Weymouth, MA — not a recommendation.

All hematologist-oncologists in South Weymouth →

Other clinicians in Dana-Farber Cancer Institute, Inc.

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year2000 (26 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1164618757
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians