Dr. Margaret Choy Merola, MD, PhD
- Affiliated sites
- 1
- Medical groups
- 2
- State license
- 1
- Year NPI issued
- 2010
- Practice address
- 955 Main St, Winchester, MA 01890
- Practice phone
- Call (781) 729-4878
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Robert J Obrien Jr MD & Assoc
Winchester, Massachusetts
Find Dr. Merola'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. Margaret Choy Merola is a dermatopathology (pathology) physician in Winchester, Massachusetts
Dr. Merola practices at Robert J Obrien Jr MD & Assoc in Winchester, Massachusetts.
Dr. Merola's NPI, 1225353618, was assigned on March 29, 2010. Dr. Merola holds Massachusetts license 248817.
- NPI
- 1225353618NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9830439199
- NPI enumeration date
- March 29, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (781) 729-4878
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Margaret Choy Merola practices at Robert J Obrien Jr MD & Assoc in Winchester, Massachusetts
Dr. Merola's primary practice is Robert J Obrien Jr MD & Assoc, at 955 Main St, Winchester, MA 01890 in Middlesex County. The practice phone is (781) 729-4878.
- Robert J Obrien Jr MD & Assoc955 Main St, Winchester, MA 01890 · Middlesex CountyPhone(781) 729-4878
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Margaret Choy Merola is affiliated with 2 sites of care and 2 medical groups
Dr. Merola's primary practice is Robert J Obrien Jr MD & Assoc in Winchester, Massachusetts. The medical group on file is Austin Pathology Associates. Dmand AI also links Dr. Merola to 1 more group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Margaret Choy Merola's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Merola practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Robert J Obrien Jr MD & Assoc | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Margaret Choy Merola is one of 18 dermatopathology (pathology) physicians in Massachusetts
Pathology is Dr. Merola's primary specialty in the NPI Registry, under taxonomy code 207ZD0900X. The record also lists dermatopathology. Dr. Merola is licensed in Massachusetts.
Specialties and state licenses
- Dermatopathology (pathology), MassachusettsPrimary
Dermatopathology (pathology) physicians near Dr. Merola
Counts of dermatopathology (pathology) physicians 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. Margaret Choy Merola's patients have a median age of 66
Across all payers, Dmand AI patient panel data puts Dr. Merola's median patient age at 66, with 56% women.
Dr. Merola's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women56%
- Men43%
Source: Dmand AI Patient Panel Data
How Dr. Margaret Choy Merola takes part in Medicare
Dr. Merola 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)
Sources for Dr. Margaret Choy Merola'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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. Margaret Choy Merola
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. Margaret Choy Merola's NPI number?
Dr. Margaret Choy Merola's NPI number is 1225353618. It was assigned on March 29, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Margaret Choy Merola?
Dr. Margaret Choy Merola is a dermatopathology (pathology) physician in Winchester, Massachusetts. The primary specialty in the NPI Registry is Dermatopathology (Pathology) Physician (taxonomy code 207ZD0900X).
Where does Dr. Margaret Choy Merola practice?
Dr. Merola practices at 955 Main St, Winchester, MA 01890. Dr. Merola's primary practice is Robert J Obrien Jr MD & Assoc in Winchester, Massachusetts. Dmand AI also links Dr. Merola to 1 group practice or clinic and 1 medical group.
What is Dr. Margaret Choy Merola's office phone number?
The practice phone on file for Dr. Merola is (781) 729-4878.
What is Dr. Margaret Choy Merola's medical license number?
Dr. Merola holds Massachusetts license 248817.
What medical group is Dr. Margaret Choy Merola part of?
Dr. Merola is linked to Austin Pathology Associates. Dmand AI links Dr. Merola to 1 more medical group.
Does Dr. Margaret Choy Merola accept Medicare?
Yes. CMS lists Dr. Merola as accepting Medicare assignment.
How long has Dr. Margaret Choy Merola been practicing?
Dr. Merola's NPI was assigned in 2010.
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