Dr. William M. Lin, MD
- Medicare services, 2024
- 5,539
- Medicare patients, 2024
- 2,426
- Part D claims, 2024
- 345
- Hospital affiliations
- 1
- 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. William M. Lin is a dermatologist in Boston, Massachusetts
Dr. Lin practices at Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. Lin's NPI, 1619255502, was assigned on July 27, 2011. Dr. Lin graduated from Yale University School of Medicine in 2011. Dr. Lin holds Massachusetts license 248412.
- NPI
- 1619255502NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3678735248
- NPI enumeration date
- July 27, 2011
- 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
- Male
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William M. Lin practices at Massachusetts General Hospital in Boston, Massachusetts
Dr. Lin'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. William M. Lin is affiliated with 4 sites of care and 2 medical groups
Dr. Lin'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. Lin to 2 more group practices and clinics, 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. William M. Lin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lin practices, 4 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 |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William M. Lin is one of 562 dermatologists in Massachusetts
Dermatology is Dr. Lin's primary specialty in the NPI Registry, under taxonomy code 207N00000X. Dr. Lin is licensed in Massachusetts.
Specialties and state licenses
- Dermatology, MassachusettsPrimary
Dermatologists near Dr. Lin
Counts of dermatologists 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. William M. Lin billed Medicare for 5,539 services in 2024
CMS data shows 5,539 Medicare services from Dr. Lin across 18 procedure codes in 2024, for 2,426 Medicare patients. Medicare paid $351,616 for them. Every service was in an office.
Dr. Lin's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 4,2582024: 4,1383%
- Surgery
- 2023: 1,1692024: 82729%
- Office and hospital visits
- 2023: 5982024: 5744%
Dr. Lin compared with the Massachusetts median for dermatologists, 2024
- Dr. Lin
- Massachusetts median
- Medicare services
- 5,539vs 1,6103.4 times
- Medicare patients
- 2,426vs 4895.0 times
- Part D claims
- 256vs 34726% below
Medians across 559 dermatologists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Lin'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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William M. Lin treated 2,426 Medicare patients in 2024, average age 77
CMS counts 2,426 Medicare patients who saw Dr. Lin in 2024. The largest group is 75 to 84, with 1,026 patients. 75% of them have high cholesterol, and 70% have high blood pressure. 5% are also on Medicaid. Their average risk score is 1.10, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Lin's median patient age at 69, with 53% women.
Dr. Lin's Medicare patients by age, 2024
Dr. Lin's Medicare patients by sex, 2024
- Women1,19049%
- Men1,23651%
Chronic conditions among Dr. Lin's Medicare patients, 2024
- High cholesterol75%
- High blood pressure70%
- Arthritis43%
- Ischemic heart disease24%
- Chronic kidney disease22%
- Anxiety21%
- Atrial fibrillation19%
- Cancer19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lin'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
- Women53%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William M. Lin wrote 345 Medicare Part D claims in 2024
In 2024, Dr. Lin wrote 345 Medicare Part D claims for 131 patients. 86% of them were for generic drugs. CMS names the drug for 256 of them, across 9 drugs with 11 or more claims each, at $91,812 in total drug cost. In 2023, CMS named 219 claims across 6 drugs.
Dr. Lin's Part D claims by kind of drug, 2024
- Generic296 claims86%
- Brand-name49 claims14%
Dr. Lin's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2192024: 25617%
Drugs named by CMS: 9 in 2024, 6 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. William M. Lin ranks in the 83rd percentile for removal of skin lesions in Medicare
Dr. Lin accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 338 procedures of removal of skin lesions by Dr. Lin, more than 83% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Lin ranks in Medicare procedure volume
- Removal of skin lesions
- 83rd percentile338 procedures
- Skin biopsy
- 83rd percentile177 procedures
- Removal or shaving of skin growth
- 69th percentile17 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. William M. Lin graduated from Yale University School of Medicine
Dr. Lin graduated from Yale University School of Medicine in 2011.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William M. Lin'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) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - 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)Doctors and Clinicians Utilization Data (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. William M. Lin
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. William M. Lin's NPI number?
Dr. William M. Lin's NPI number is 1619255502. It was assigned on July 27, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. William M. Lin?
Dr. William M. Lin is a dermatologist in Boston, Massachusetts. The primary specialty in the NPI Registry is Dermatology Physician (taxonomy code 207N00000X).
Where does Dr. William M. Lin practice?
Dr. Lin practices at 55 Fruit Street, Boston, MA 02114. Dr. Lin's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Lin to 2 group practices and clinics, 1 community health center and 1 medical group.
What is Dr. William M. Lin's office phone number?
The practice phone on file for Dr. Lin is (617) 726-2000.
What is Dr. William M. Lin's medical license number?
Dr. Lin holds Massachusetts license 248412.
Which hospitals is Dr. William M. Lin affiliated with?
Dr. Lin practices at Massachusetts General Hospital in Boston, Massachusetts.
What medical group is Dr. William M. Lin part of?
Dr. Lin is linked to Massachusetts General Physicians Organization (MGPO). Dmand AI links Dr. Lin to 1 more medical group.
Does Dr. William M. Lin accept Medicare?
Yes. CMS data shows Dr. Lin billed Medicare for 5,539 services in 2024, and Dr. Lin accepts Medicare assignment.
How many Medicare patients does Dr. William M. Lin see?
CMS counts 2,426 Medicare patients who saw Dr. Lin in 2024, with an average age of 77.
What services does Dr. William M. Lin bill to Medicare?
In 2024, Dr. Lin's most billed Medicare services were lab and pathology test (88305), surgery: skin and soft tissue (17003) and lab and pathology test (88342).
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Where did Dr. William M. Lin go to medical school?
Dr. Lin graduated from Yale University School of Medicine in 2011.
What drugs does Dr. William M. Lin prescribe most?
In 2024 Medicare Part D data, Dr. Lin's most prescribed drugs by claims were Fluorouracil, Ketoconazole and Betamethasone Dipropionate.
How long has Dr. William M. Lin been practicing?
Dr. Lin graduated from medical school in 2011, 15 years ago.
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