Dr. Daniel P. Cahill III, MD, PhD
- Medicare services, 2024
- 145
- Medicare patients, 2024
- 88
- Publications
- 72
- Hospital affiliations
- 1
- Industry payments
- $44,367
- 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
Find Dr. Cahill's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Daniel P. Cahill III is a neurosurgeon in Boston, Massachusetts
Dr. Cahill practices at Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. Cahill's NPI, 1336113679, was assigned on February 14, 2006. Dr. Cahill graduated from The Johns Hopkins University School of Medicine in 2001. Dr. Cahill holds Massachusetts license 217299.
- NPI
- 1336113679NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6002986213
- NPI enumeration date
- February 14, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (617) 726-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Daniel P. Cahill III practices at Massachusetts General Hospital in Boston, Massachusetts
Dr. Cahill'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. Daniel P. Cahill III is affiliated with 3 sites of care and 2 medical groups
Dr. Cahill'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. Cahill to 1 more community health center, 1 home health agency and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Daniel P. Cahill III's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Cahill practices, 3 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 |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Mass General Brigham and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Daniel P. Cahill III is one of 182 neurosurgeons in Massachusetts
Neurological surgery is Dr. Cahill's primary specialty in the NPI Registry, under taxonomy code 207T00000X. Dr. Cahill is board certified in neurological surgery by the American Board of Neurological Surgery. Dmand AI has Dr. Cahill's licenses on file in 2 states: Massachusetts and Texas.
Specialties and state licenses
- Neurological surgery, MassachusettsPrimary
- Texas license
Clinical focus
Dmand AI lists craniotomy among the conditions Dr. Cahill treats.
Neurosurgeons near Dr. Cahill
Counts of neurosurgeons with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Daniel P. Cahill III billed Medicare for 145 services in 2024
CMS data shows 145 Medicare services from Dr. Cahill across 8 procedure codes in 2024, for 88 Medicare patients. Medicare paid $66,722 for them.
Dr. Cahill's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 1092024: 12212%
- Office and hospital visits
- 2023: 402024: 2343%
Where Dr. Cahill's Medicare services took place, 2024
- In an office128%
- In a facility13392%
Dr. Cahill compared with the Massachusetts median for neurosurgeons, 2024
- Dr. Cahill
- Massachusetts median
- Medicare services
- 145vs 20228% below
- Medicare patients
- 88vs 16145% below
Medians across 156 neurosurgeons in Massachusetts with Dmand AI profiles that report each measure.
Dr. Cahill's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Cahill?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Cahill and other neurosurgeons in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Daniel P. Cahill III treated 88 Medicare patients in 2024, average age 75
CMS counts 88 Medicare patients who saw Dr. Cahill in 2024. The largest group is 65 to 74, with 43 patients. 75% of them have high cholesterol, and 74% have high blood pressure. Their average risk score is 2.00, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Cahill's median patient age at 69, with 64% women.
Dr. Cahill's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Cahill's Medicare patients by sex, 2024
- Women5057%
- Men3843%
Chronic conditions among Dr. Cahill's Medicare patients, 2024
- High cholesterol75%
- High blood pressure74%
- Anxiety51%
- Cancer50%
- Arthritis49%
- Mood disorders38%
- Stroke or TIA35%
- Depression32%
Share of Medicare patients with each condition. A patient can have several.
Dr. Cahill's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women64%
- Men35%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Daniel P. Cahill III offers telehealth to Medicare patients
Dr. Cahill accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Cahill as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Daniel P. Cahill III has 72 publications on record
Dmand AI links 72 papers to Dr. Cahill, published from 2013 to 2025. 2024 was the busiest year, with 8. The most frequent topics are Brain Neoplasms, Glioma and Isocitrate Dehydrogenase. Dr. Cahill has published most often in Neuro Oncol. Dr. Cahill's most frequent co-authors are Priscilla Kaliopi Brastianos, MD, Tracy Todd Batchelor, MD, MPH and William T. Curry, MD.
Dr. Cahill's papers by year, 2016 to 2025
Topics Dr. Cahill writes about most
- Brain Neoplasms
- Glioma
- Isocitrate Dehydrogenase
- Glioblastoma
- Cell Line, Tumor
- Brain
- Magnetic Resonance Imaging
- Neoplasm Grading
Dr. Cahill's most frequent co-authors
- Priscilla Kaliopi Brastianos, MD14 shared papers
- Tracy Todd Batchelor, MD, MPH11 shared papers
- William T. Curry, MD10 shared papers
Recent publications by Dr. Cahill
Acta Neuropathol Commun
See who Dr. Cahill researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Cahill works with, so you can find a warm path to the right neurosurgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Daniel P. Cahill III received $44,367 in industry payments from 2016 to 2025
CMS Open Payments shows 16 general payments to Dr. Cahill from 6 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 76% of the total. Boston Scientific Corporation paid the most, $14,450.
General payments to Dr. Cahill by program year, 2016 to 2025
General payments to Dr. Cahill by kind, 2016 to 2025
- Consulting fees$33,66476%
- Travel and lodging$5,72813%
- Speaker and faculty fees$4,87511%
- Food and beverage$740%
- Education$260%
Companies that paid Dr. Cahill the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Daniel P. Cahill III graduated from The Johns Hopkins University School of Medicine
Dr. Cahill graduated from The Johns Hopkins University School of Medicine in 2001. Dr. Cahill is a member of AANS, ASCO and CNS.
- Medical school
- Board certified in neurological surgery
Source: Dmand AI Professional Profile Data
Dr. Daniel P. Cahill III accepts plans from 11 insurance carriers
Dr. Cahill is in network with 11 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- Elevance
- Excellus BlueCross BlueShield
- HCSC
- CMS Medicare
- +3 more carriersWith a free account
Plan types Dr. Cahill accepts, by number of carriers
- PPO8
- Medicare7
- HMO5
- EPO3
- POS3
- Medicaid2
Source: Dmand AI Insurance Network Data
Sources for Dr. Daniel P. Cahill III'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 services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Daniel P. Cahill III
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. Daniel P. Cahill III's NPI number?
Dr. Daniel P. Cahill III's NPI number is 1336113679. It was assigned on February 14, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Daniel P. Cahill III?
Dr. Daniel P. Cahill III is a neurosurgeon in Boston, Massachusetts. The primary specialty in the NPI Registry is Neurological Surgery Physician (taxonomy code 207T00000X).
Where does Dr. Daniel P. Cahill III practice?
Dr. Cahill practices at 55 Fruit Street, Boston, MA 02114. Dr. Cahill's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Cahill to 1 community health center, 1 home health agency and 1 medical group.
What is Dr. Daniel P. Cahill III's office phone number?
The practice phone on file for Dr. Cahill is (617) 726-2000.
What is Dr. Daniel P. Cahill III's medical license number?
Dr. Cahill holds Massachusetts license 217299, one of the licenses on file in 2 states.
Which states has Dr. Daniel P. Cahill III been licensed in?
Dmand AI has state licenses on file for Dr. Cahill in Massachusetts (2004 to 2026) and Texas (2008 to 2017).
Which hospitals is Dr. Daniel P. Cahill III affiliated with?
Dr. Cahill practices at Massachusetts General Hospital in Boston, Massachusetts.
What medical group is Dr. Daniel P. Cahill III part of?
Dr. Cahill is linked to Massachusetts General Physicians Organization (MGPO). Dmand AI links Dr. Cahill to 1 more medical group.
Does Dr. Daniel P. Cahill III accept Medicare?
Yes. CMS data shows Dr. Cahill billed Medicare for 145 services in 2024, and Dr. Cahill accepts Medicare assignment.
Does Dr. Daniel P. Cahill III offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Cahill as offering telehealth services.
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How many Medicare patients does Dr. Daniel P. Cahill III see?
CMS counts 88 Medicare patients who saw Dr. Cahill in 2024, with an average age of 75.
Is Dr. Daniel P. Cahill III board certified?
Yes. Dr. Cahill is board certified in neurological surgery by the American Board of Neurological Surgery.
What services does Dr. Daniel P. Cahill III bill to Medicare?
In 2024, Dr. Cahill's most billed Medicare services were surgery: brain, spine and nerves (61796), surgery: brain, spine and nerves (61797) and surgery: brain, spine and nerves (61781).
Where did Dr. Daniel P. Cahill III go to medical school?
Dr. Cahill graduated from The Johns Hopkins University School of Medicine in 2001.
Has Dr. Daniel P. Cahill III received payments from drug or device companies?
CMS Open Payments shows $44,367 in general payments to Dr. Cahill from 6 companies from 2016 to 2025. The largest total came from Boston Scientific Corporation.
How long has Dr. Daniel P. Cahill III been practicing?
Dr. Cahill graduated from medical school in 2001, 25 years ago.
Does Dr. Daniel P. Cahill III do research?
Dmand AI links 72 publications to Dr. Cahill, published from 2013 to 2025.
Who does Dr. Daniel P. Cahill III publish with?
Dr. Cahill's most frequent co-authors are Priscilla Kaliopi Brastianos, MD (14 shared papers), Tracy Todd Batchelor, MD, MPH (11 shared papers) and William T. Curry, MD (10 shared papers).
What insurance does Dr. Daniel P. Cahill III accept?
Dr. Cahill is in network with 11 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
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