Clinical Pathologists in Massachusetts
Data updated monthly · Last refresh October 2026
40 Clinical Pathology providers practice in Massachusetts. The largest concentration is in Boston. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.
40providers
Bostontop city
Clinical Pathology by city in Massachusetts
Choose a city to see providers there.
Where Clinical Pathologists in Massachusetts practice
From CMS Medicare enrollment records covering 24 of the 40 providers listed here (60%). Providers who do not bill Medicare are not included in these figures.
17%solo or small practice (under 10 clinicians)
8%mid-size group (10 to 99)
75%large group or health system (100+)
Largest practice groups
| Group (as registered with Medicare) | Clinical Pathologists | All clinicians in group | Main city |
| Brigham and Womens Physicians Organization Inc. | 15 | 2,931 | Boston |
| Massachusetts General Physicians Organization Inc. | 4 | 3,494 | Boston |
| Boston University Mallory Pathology Associates Inc. | 2 | 17 | Boston |
Hospitals where they hold privileges
| Hospital | City | Ownership | CMS star rating | Clinical Pathologists affiliated |
| Brigham and Women's Hospital | Boston | Nonprofit | 5 of 5 | 15 |
| Massachusetts General Hospital | Boston | Nonprofit | 5 of 5 | 13 |
| Brigham and Women Faulkner Hospital | Jamaica Plain | Nonprofit | 5 of 5 | 4 |
| Newton-Wellesley Hospital | Newton | Nonprofit | 5 of 5 | 4 |
| North Shore Medical Center - | Salem | Nonprofit | 5 of 5 | 4 |
Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.
Clinical Pathology providers in Massachusetts
Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
Dr. Vijay Modur, MDActon, MA · No drug or device payments recorded (2025) ·
(610) 409-8366 Dr. Abdurrahman Fatih Ozay, MDBoston, MA · No drug or device payments recorded (2025) ·
(617) 732-5500 Dr. Adrianna Herskovits, MD, PHDBoston, MA · No drug or device payments recorded (2025) ·
(617) 800-9279 Dr. Alissa Minkovsky, M.D./PH.D.Boston, MA · No drug or device payments recorded (2025) ·
(617) 525-8021 Dr. Allen Bryan, M.D., PH.D.Boston, MA · No drug or device payments recorded (2025) ·
(617) 667-4344 Dr. Allison Carey, MD, PHDBoston, MA · No drug or device payments recorded (2025) ·
(617) 726-2967 Dr. Allison OnkenBoston, MA · No drug or device payments recorded (2025) ·
(301) 801-1503 Dr. Cecilia Ponchiardi, M.D.Boston, MA · No drug or device payments recorded (2025) ·
(617) 667-4344 Dr. Christopher Hergott, MD, PHDBoston, MA · No drug or device payments recorded (2025) ·
(617) 732-5500 Dr. Daimon Simmons, M.D., PH.DBoston, MA · No drug or device payments recorded (2025) ·
(617) 732-8613 Dr. Daniel Ditoro, MD, PHDBoston, MA · No drug or device payments recorded (2025) ·
(617) 732-7510 Dr. David Miller, MDBoston, MA · No drug or device payments recorded (2025) ·
(617) 355-6394 Dr. Edina Wappler-guzzetta, MD, PHDBoston, MA · No drug or device payments recorded (2025) ·
(617) 414-4291 Dr. Gandhar DatarBoston, MA · No drug or device payments recorded (2025) ·
(617) 726-5440 Dr. Georg Gerber, M.D., PH.D.Boston, MA · No drug or device payments recorded (2025) ·
(617) 767-6822 Dr. Grace Mahowald, MD, PHDBoston, MA · $3,192 in drug and device payments (2025) ·
(617) 726-2865 Dr. Jeffrey Gagan, M.D./PH.D.Boston, MA · No drug or device payments recorded (2025) ·
(617) 525-8021 Dr. Jeremy Ryan Pena, MD, PHD, MSBoston, MA · No drug or device payments recorded (2025) ·
(617) 726-0967 Dr. Jonathan Tsai, MD, PHDBoston, MA · No drug or device payments recorded (2025) ·
(617) 732-5500 Dr. Julie Guilmette, M.DBoston, MA · No drug or device payments recorded (2025) ·
(617) 726-5149 Dr. Li LiuBoston, MA · No drug or device payments recorded (2025) ·
(617) 724-0288 Dr. Lina MaBoston, MA · No drug or device payments recorded (2025) ·
(978) 828-2524 Dr. Melis Anahtar, MD, PHDBoston, MA · No drug or device payments recorded (2025) ·
(617) 726-1448 Dr. Mischa Covington, MD, PHD Dr. Natasha Novikov, MDBoston, MA · No drug or device payments recorded (2025) ·
(617) 792-6790 Dr. Phoenix BellBoston, MA · No drug or device payments recorded (2025) ·
(617) 732-5500 Dr. Sacha Uljon, MD, PHDBoston, MA · $3,799 in drug and device payments (2025) ·
(617) 643-0800 Dr. Sam Sadigh, M.D.Boston, MA · No drug or device payments recorded (2025) ·
(617) 732-5500 Dr. Sankha Basu, M.D., PH.DBoston, MA · No drug or device payments recorded (2025) ·
(617) 525-8019 Dr. Sarah Mueller, MD, PHDBoston, MA · No drug or device payments recorded (2025) ·
(617) 414-4291 Dr. Tasos GogakosBoston, MA · No drug or device payments recorded (2025) ·
(617) 726-2000 Dr. Vinay Mahajan, M.B.B.S, PH.D.Boston, MA · No drug or device payments recorded (2025) ·
(617) 732-5500 Dr. William Lane, M.D., PH.D.Boston, MA · No drug or device payments recorded (2025) ·
(617) 732-7510 Dr. William Rothwell, MD PHDBoston, MA · No drug or device payments recorded (2025) ·
(857) 276-5490 Dr. Zahra Jalali, MDBoston, MA · No drug or device payments recorded (2025) ·
(617) 636-2567 Dr. Lei LiBurlington, MA · No drug or device payments recorded (2025) ·
(781) 744-8046 Dr. George Tjionas, MDWorcester, MA · No drug or device payments recorded (2025) ·
(508) 793-6100 Common questions
How many Clinical Pathology providers are in Massachusetts?There are 40 Clinical Pathology providers with active NPI records practicing in Massachusetts, according to federal NPPES data refreshed monthly.
Which cities in Massachusetts have the most Clinical Pathology providers?Boston (37), Worcester (1), Acton (1) have the highest concentration of Clinical Pathology providers in Massachusetts.
How many Clinical Pathology providers in Massachusetts received drug or device company payments?6 of 40 Clinical Pathology providers in Massachusetts (15%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
Where does this data come from?Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
Do most Clinical Pathologists in Massachusetts work in independent practices or large health systems?Among 24 Clinical Pathologists in Massachusetts enrolled in Medicare, 17% bill through a solo or small practice with fewer than 10 clinicians, 8% through a mid-size group of 10 to 99, and 75% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Clinical Pathologists in Massachusetts work at?According to CMS facility affiliation records, the Massachusetts hospitals where the most Clinical Pathologists hold privileges are Brigham and Women's Hospital in Boston; Massachusetts General Hospital in Boston; Brigham and Women Faulkner Hospital in Jamaica Plain.
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