Postoperative CarePostoperative Complications
Dr. Cassandra Michelle Kelleher, MD
NPI1760558449
- Publications
- 45
- Hospital affiliations
- 1
- Industry payments
- $1,120
- Medical groups
- 2
- State license
- 1
- Practice address
- 55 Fruit Street, Boston, MA 02114
- Practice phone
- Call (617) 726-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Cassandra Michelle Kelleher is a general surgeon in Boston, Massachusetts
Dr. Kelleher practices at Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. Kelleher's NPI, 1760558449, was assigned on November 27, 2006. Dr. Kelleher graduated from Harvard Medical School in 2000. Dr. Kelleher holds Massachusetts license 221358.
NPI and contact details
- NPI
- 1760558449NPI Registry (opens in a new tab)
- NPI enumeration date
- November 27, 2006
- NPI status
- Active
- Practice phone
- (617) 726-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Cassandra Michelle Kelleher practices at Massachusetts General Hospital in Boston, Massachusetts
Dr. Kelleher's primary practice is Massachusetts General Hospital, at 55 Fruit Street, Boston, MA 02114 in Suffolk County. The practice phone is (617) 726-2000.
- Massachusetts General Hospital55 Fruit Street, Boston, MA 02114 · Suffolk CountyPhone(617) 726-2000
Source: Dmand AI Affiliation Data
Dr. Cassandra Michelle Kelleher is affiliated with 2 sites of care and 2 medical groups
Dr. Kelleher's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. The medical group on file is Massachusetts General Physicians Organization (MGPO). Dmand AI also links Dr. Kelleher to 1 more community health center and 1 medical group, each named with a free account.
Massachusetts General Physicians Organization (MGPO)1 community health centerName with a free account1 medical groupName with a free account
See all 4 affiliations for Dr. KelleherSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Cassandra Michelle Kelleher's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kelleher practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Massachusetts General Hospital | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Cassandra Michelle Kelleher is one of 732 general surgeons in Massachusetts
Surgery is Dr. Kelleher's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Kelleher is licensed in Massachusetts.
Specialties and state licenses
- Surgery, MassachusettsPrimary
General surgeons near Dr. Kelleher
Counts of general surgeons with a Dmand AI profile, by place and practice. Each opens the list.
732general surgeons in Massachusetts254general surgeons in Boston51general surgeons at Massachusetts General Hospital
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Cassandra Michelle Kelleher's patients have a median age of 13
Across all payers, Dmand AI patient panel data puts Dr. Kelleher's median patient age at 13, with 50% women.
Dr. Kelleher's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 13
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. Cassandra Michelle Kelleher has 45 publications on record
Dmand AI links 45 papers to Dr. Kelleher, published from 2010 to 2025. 2018 was the busiest year, with 5. The most frequent topics are Postoperative Complications, Surgeons and New York. Dr. Kelleher has published most often in J Pediatr Surg. Dr. Kelleher's most frequent co-authors are Peter Theodore Masiakos, MD, Numa P. Perez, MD and Yu-Wei Chen, MD.
Papers45
Years published2010 to 2025
Dr. Kelleher's papers by year, 2016 to 2025
Topics Dr. Kelleher writes about most
- Postoperative Complications
- Surgeons
- New York
- Physicians, Women
- Employment
- Palliative Care
- Referral and Consultation
- Anesthesia, Spinal
Dr. Kelleher's most frequent co-authors
- Peter Theodore Masiakos, MD8 shared papers
- Numa P. Perez, MD6 shared papers
- Yu-Wei Chen, MD4 shared papers
Recent publications by Dr. Kelleher
Conservative TreatmentIntestinal ObstructionIntestine, Small
JAMA Netw Open
BostonGoalsPalliative Care
J Pediatr Surg
Critical IllnessPalliative CareSurgical Procedures, Operative
Int J Pediatr Otorhinolaryngol
AlgorithmsEnteral NutritionHome Care Services
See who Dr. Kelleher researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Kelleher works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Cassandra Michelle Kelleher received $1,120 in industry payments from 2022 to 2023
CMS Open Payments shows 6 general payments to Dr. Kelleher from 2 drug and device companies from 2022 to 2023. Travel and lodging make up the largest share, 77% of the total. Eli Lilly and Company paid the most, $859.
General payments to Dr. Kelleher by program year, 2022 to 2023
General payments to Dr. Kelleher by kind, 2022 to 2023
$1.1Kin total
- Travel and lodging$85977%
- Food and beverage$26123%
Companies that paid Dr. Kelleher the most, 2022 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Cassandra Michelle Kelleher graduated from Harvard Medical School
Dr. Kelleher graduated from Harvard Medical School in 2000.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Cassandra Michelle Kelleher's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Cassandra Michelle Kelleher
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Cassandra Michelle Kelleher's NPI number?
Dr. Cassandra Michelle Kelleher's NPI number is 1760558449. It was assigned on November 27, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Cassandra Michelle Kelleher?
Dr. Cassandra Michelle Kelleher is a general surgeon in Boston, Massachusetts. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Cassandra Michelle Kelleher practice?
Dr. Kelleher practices at 55 Fruit Street, Boston, MA 02114. Dr. Kelleher's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Kelleher to 1 community health center and 1 medical group.
What is Dr. Cassandra Michelle Kelleher's office phone number?
The practice phone on file for Dr. Kelleher is (617) 726-2000.
What is Dr. Cassandra Michelle Kelleher's medical license number?
Dr. Kelleher holds Massachusetts license 221358.
Which hospitals is Dr. Cassandra Michelle Kelleher affiliated with?
Dr. Kelleher practices at Massachusetts General Hospital in Boston, Massachusetts.
What medical group is Dr. Cassandra Michelle Kelleher part of?
Dr. Kelleher is linked to Massachusetts General Physicians Organization (MGPO). Dmand AI links Dr. Kelleher to 1 more medical group.
Where did Dr. Cassandra Michelle Kelleher go to medical school?
Dr. Kelleher graduated from Harvard Medical School in 2000.
Has Dr. Cassandra Michelle Kelleher received payments from drug or device companies?
CMS Open Payments shows $1,120 in general payments to Dr. Kelleher from 2 companies from 2022 to 2023. The largest total came from Eli Lilly and Company.
How long has Dr. Cassandra Michelle Kelleher been practicing?
Dr. Kelleher graduated from medical school in 2000, 26 years ago.
Does Dr. Cassandra Michelle Kelleher do research?
Dmand AI links 45 publications to Dr. Kelleher, published from 2010 to 2025.
Who does Dr. Cassandra Michelle Kelleher publish with?
Dr. Kelleher's most frequent co-authors are Peter Theodore Masiakos, MD (8 shared papers), Numa P. Perez, MD (6 shared papers) and Yu-Wei Chen, MD (4 shared papers).
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