Dr. Lyn McDivitt Duncan, MD
- Medicare services, 2024
- 1,461
- Medicare patients, 2024
- 780
- Hospital affiliations
- 5
- Industry payments
- $6,183
- Medical groups
- 2
- 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. Lyn McDivitt Duncan is a pathologist in Boston, Massachusetts
Dr. Duncan practices at Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. Duncan's NPI, 1073563698, was assigned on May 12, 2006. Dr. Duncan graduated from Washington University School of Medicine in 1986. Dr. Duncan holds Massachusetts license 73791.
- NPI
- 1073563698NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5092791509
- NPI enumeration date
- May 12, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (617) 726-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 66
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Lyn McDivitt Duncan practices at Massachusetts General Hospital in Boston, Massachusetts
Dr. Duncan'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. Lyn McDivitt Duncan is affiliated with 6 sites of care and 2 medical groups
Dr. Duncan's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dr. Duncan is also affiliated with Brigham and Women's Hospital. The medical group on file is Massachusetts General Physicians Organization (MGPO). Dmand AI also links Dr. Duncan to 3 more hospitals, 1 community health center 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. Lyn McDivitt Duncan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Duncan practices, 6 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 |
| +5 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Lyn McDivitt Duncan is one of 174 pathologists in Massachusetts
Anatomic pathology is Dr. Duncan's primary specialty in the NPI Registry, under taxonomy code 207ZP0101X. Dr. Duncan is licensed in Massachusetts.
Specialties and state licenses
- Anatomic pathology, MassachusettsPrimary
Pathologists near Dr. Duncan
Counts of pathologists 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. Lyn McDivitt Duncan billed Medicare for 1,461 services in 2024
CMS data shows 1,461 Medicare services from Dr. Duncan across 8 procedure codes in 2024, for 780 Medicare patients. Medicare paid $39,963 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Duncan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 1,2962024: 1,46113%
Dr. Duncan compared with the Massachusetts median for pathologists, 2024
- Dr. Duncan
- Massachusetts median
- Medicare services
- 1,461vs 1,01943% above
- Medicare patients
- 780vs 45372% above
Medians across 169 pathologists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Duncan'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. Duncan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Duncan and other pathologists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Lyn McDivitt Duncan treated 780 Medicare patients in 2024, average age 77
CMS counts 780 Medicare patients who saw Dr. Duncan in 2024. The largest group is 75 to 84, with 324 patients. 74% of them have high cholesterol, and 72% have high blood pressure. 11% are also on Medicaid. Their average risk score is 1.39, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Duncan's median patient age at 75, with 46% women.
Dr. Duncan's Medicare patients by age, 2024
Dr. Duncan's Medicare patients by sex, 2024
- Women34945%
- Men43155%
Chronic conditions among Dr. Duncan's Medicare patients, 2024
- High cholesterol74%
- High blood pressure72%
- Arthritis47%
- Ischemic heart disease33%
- Atrial fibrillation25%
- Cancer25%
- Chronic kidney disease24%
- Anxiety23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Duncan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women46%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Lyn McDivitt Duncan takes part in Medicare
Dr. Duncan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Lyn McDivitt Duncan received $6,183 in industry payments in 2025
CMS Open Payments shows 6 general payments to Dr. Duncan from 1 drug or device company in 2025. Consulting fees make up the largest share, 93% of the total. Merck Sharp & Dohme Corporation paid the most, $6,183.
General payments to Dr. Duncan by kind, 2025 to 2025
- Consulting fees$5,76093%
- Food and beverage$2734%
- Travel and lodging$1502%
Companies that paid Dr. Duncan the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Lyn McDivitt Duncan graduated from Washington University School of Medicine
Dr. Duncan graduated from Washington University School of Medicine in 1986.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Lyn McDivitt Duncan'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) |
| 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. Lyn McDivitt Duncan
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. Lyn McDivitt Duncan's NPI number?
Dr. Lyn McDivitt Duncan's NPI number is 1073563698. It was assigned on May 12, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Lyn McDivitt Duncan?
Dr. Lyn McDivitt Duncan is a pathologist in Boston, Massachusetts. The primary specialty in the NPI Registry is Anatomic Pathology Physician (taxonomy code 207ZP0101X).
Where does Dr. Lyn McDivitt Duncan practice?
Dr. Duncan practices at 55 Fruit Street, Boston, MA 02114. Dr. Duncan's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Duncan to 3 hospitals, 1 community health center and 1 medical group.
What is Dr. Lyn McDivitt Duncan's office phone number?
The practice phone on file for Dr. Duncan is (617) 726-2000.
What is Dr. Lyn McDivitt Duncan's medical license number?
Dr. Duncan holds Massachusetts license 73791.
Which hospitals is Dr. Lyn McDivitt Duncan affiliated with?
Dr. Duncan practices at Massachusetts General Hospital in Boston, Massachusetts. Dr. Duncan is also affiliated with Brigham and Women's Hospital. Dmand AI links Dr. Duncan to 3 more hospitals.
What medical group is Dr. Lyn McDivitt Duncan part of?
Dr. Duncan is linked to Massachusetts General Physicians Organization (MGPO). Dmand AI links Dr. Duncan to 1 more medical group.
Does Dr. Lyn McDivitt Duncan accept Medicare?
Yes. CMS data shows Dr. Duncan billed Medicare for 1,461 services in 2024, and Dr. Duncan accepts Medicare assignment.
How many Medicare patients does Dr. Lyn McDivitt Duncan see?
CMS counts 780 Medicare patients who saw Dr. Duncan in 2024, with an average age of 77.
What services does Dr. Lyn McDivitt Duncan bill to Medicare?
In 2024, Dr. Duncan's most billed Medicare services were lab and pathology test (88305), lab and pathology test (88341) and lab and pathology test (88342).
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Where did Dr. Lyn McDivitt Duncan go to medical school?
Dr. Duncan graduated from Washington University School of Medicine in 1986.
Has Dr. Lyn McDivitt Duncan received payments from drug or device companies?
CMS Open Payments shows $6,183 in general payments to Dr. Duncan from 1 company from 2025 to 2025. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Lyn McDivitt Duncan been practicing?
Dr. Duncan graduated from medical school in 1986, 40 years ago.
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