Dr. Gustavo A. Mercier Jr., MD, PhD

  • Boston, MA
  • Diagnostic radiologist
NPI1316986904PAC ID4385609890
Medicare services, 2024
1,184
Medicare patients, 2024
1,141
Publications
17
Clinical trials
1
Hospital affiliations
4
Practice address
450 Brookline Avenue, Boston, MA 02115
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Dana-Farber Cancer Institute

Hospital · Boston, Massachusetts

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Dr. Gustavo A. Mercier Jr. is a diagnostic radiologist in Boston, Massachusetts

Dr. Mercier practices at Dana-Farber Cancer Institute in Boston, Massachusetts, part of Dana-Farber Cancer Institute.

Dr. Mercier's NPI, 1316986904, was assigned on June 6, 2006. Dr. Mercier graduated from Icahn School Of Medicine At Mount Sinai in 1990. Dr. Mercier holds Massachusetts license 230051.

NPI and contact details
Medicare PAC ID
4385609890
NPI enumeration date
June 6, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
62
Medical school graduation
1990

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Gustavo A. Mercier Jr. practices at Dana-Farber Cancer Institute in Boston, Massachusetts

Dr. Mercier's primary practice is Dana-Farber Cancer Institute, at 450 Brookline Avenue, Boston, MA 02115.

Source: Dmand AI Affiliation Data

Dr. Gustavo A. Mercier Jr. is affiliated with 6 sites of care and 3 medical groups

Dr. Mercier's primary practice is Dana-Farber Cancer Institute in Boston, Massachusetts, part of Dana-Farber Cancer Institute. Dr. Mercier is also affiliated with Massachusetts General Hospital. The medical group on file is Brigham and Women's Hospital. Dmand AI also links Dr. Mercier to 2 more hospitals, 2 group practices and clinics and 2 medical groups, each named with a free account.

See all 9 affiliations for Dr. Mercier

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Gustavo A. Mercier Jr.'s practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mercier practices, 6 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Dana-Farber Cancer InstituteAvailable with a free account
+5 more sites and 2 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Gustavo A. Mercier Jr. is one of 1,246 diagnostic radiologists in Massachusetts

Diagnostic radiology is Dr. Mercier's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Mercier is board certified in nuclear medicine by the American Board of Nuclear Medicine. Dmand AI has Dr. Mercier's licenses on file in 6 states: Massachusetts, Texas, Oklahoma, Pennsylvania, Maryland and New York.

Specialties and state licenses

  • Diagnostic radiology, MassachusettsPrimaryLicense 230051 · 2006 to 2027 · taxonomy 2085R0202X
  • Texas license2004 to 2021
  • Oklahoma license1998 to 2009
  • Pennsylvania license1997 to 1998
  • Maryland license1995 to 1997
  • New York license1991 to 1996

Diagnostic radiologists near Dr. Mercier

Counts of diagnostic radiologists 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. Gustavo A. Mercier Jr. billed Medicare for 1,184 services in 2024

CMS data shows 1,184 Medicare services from Dr. Mercier across 8 procedure codes in 2024, for 1,141 Medicare patients. Medicare paid $99,021 for them.

Medicare services, 20241,184
Medicare patients1,141
Paid by Medicare$99,021
Procedure codes8

Dr. Mercier's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Imaging
2023: 3682024: 1,184222%

Where Dr. Mercier's Medicare services took place, 2024

  • In an office19216%
  • In a facility99284%

Dr. Mercier compared with the Massachusetts median for diagnostic radiologists, 2024

  • Dr. Mercier
  • Massachusetts median
Medicare services
1,184vs 2,24247% below
Medicare patients
1,141vs 1,57127% below

Medians across 1,108 diagnostic radiologists in Massachusetts with Dmand AI profiles that report each measure.

Dr. Mercier'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Mercier and other diagnostic radiologists in Massachusetts.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Gustavo A. Mercier Jr. treated 1,141 Medicare patients in 2024, average age 74

CMS counts 1,141 Medicare patients who saw Dr. Mercier in 2024. The largest group is 65 to 74, with 533 patients. 71% of them have high cholesterol, and 68% have high blood pressure. 14% are also on Medicaid. Their average risk score is 2.22, 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. Mercier's median patient age at 69, with 51% women.

Medicare patients, 20241,141
Average age74
Average risk score2.22
Also on Medicaid14%

Dr. Mercier's Medicare patients by age, 2024

Dr. Mercier's Medicare patients by sex, 2024

  • Women53247%
  • Men60953%

Chronic conditions among Dr. Mercier's Medicare patients, 2024

  1. High cholesterol71%
  2. High blood pressure68%
  3. Cancer56%
  4. Arthritis41%
  5. Anxiety31%
  6. Ischemic heart disease28%
  7. Mood disorders28%
  8. Chronic kidney disease27%

Share of Medicare patients with each condition. A patient can have several.

Dr. Mercier'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

  • Women51%
  • Men49%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

How Dr. Gustavo A. Mercier Jr. takes part in Medicare

Dr. Mercier 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. Gustavo A. Mercier Jr. has 17 publications on record

Dmand AI links 17 papers to Dr. Mercier, published from 2012 to 2025. 2012 was the busiest year, with 2. The most frequent topics are Fluorodeoxyglucose F18, Positron-Emission Tomography and Radiopharmaceuticals. Dr. Mercier has published most often in AJR Am J Roentgenol. Dr. Mercier's most frequent co-authors are Rathan M. Subramaniam, MD, MPH, PhD, Sara K. Meibom, MD and Minh Tam Truong, MD.

Papers17
Years published2012 to 2025

Dr. Mercier's papers by year, 2012 to 2025

Topics Dr. Mercier writes about most

  • Fluorodeoxyglucose F18
  • Positron-Emission Tomography
  • Radiopharmaceuticals
  • Tomography, X-Ray Computed
  • Multimodal Imaging
  • Tumor Burden
  • Deep Learning
  • Image Interpretation, Computer-Assisted

Dr. Mercier's most frequent co-authors

Recent publications by Dr. Mercier

See all 17 publications and co-authors

See who Dr. Mercier researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Mercier works with, so you can find a warm path to the right diagnostic radiologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Gustavo A. Mercier Jr. has worked on 1 clinical trial

Dmand AI links Dr. Mercier to 1 clinical trial. Conditions studied include Breast Neoplasms and Breast Diseases.

Conditions in Dr. Mercier's trials

  • Breast Neoplasms
  • Breast Diseases

Recent clinical trials with Dr. Mercier

Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)

Dr. Gustavo A. Mercier Jr. received $4,058 in industry payments from 2019 to 2022

CMS Open Payments shows 2 general payments to Dr. Mercier from 2 drug and device companies from 2019 to 2022. Honoraria make up the largest share, 99% of the total. Telix Pharmaceuticals paid the most, $4,000.

General payments to Dr. Mercier by program year, 2019 to 2022

General payments to Dr. Mercier by kind, 2019 to 2022

$4.1Kin total
  • Honoraria$4,00099%
  • Education$581%

Companies that paid Dr. Mercier the most, 2019 to 2022

Share is of all general payments to this clinician.

See all payments to Dr. Mercier

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Gustavo A. Mercier Jr. graduated from Icahn School Of Medicine At Mount Sinai

Dr. Mercier graduated from Icahn School Of Medicine At Mount Sinai in 1990. Dr. Mercier is a member of American College of Nuclear Medicine, ACR, ARRS, RSNA and Society of Nuclear Medicine and Molecular Imaging.

  1. Medical schoolIcahn School Of Medicine At Mount Sinai
  2. Board certified in nuclear medicineAmerican Board of Nuclear Medicine
  3. Board certified in diagnostic radiologyAmerican Board of Radiology

Source: Dmand AI Professional Profile Data

Dr. Gustavo A. Mercier Jr. accepts plans from 15 insurance carriers

Dr. Mercier is in network with 15 carriers, including Excellus BlueCross BlueShield, United Healthcare and Elevance. HMO plans come from the most carriers, 8. Check the plan with the practice before a visit.

  • Excellus BlueCross BlueShield
  • United Healthcare
  • Elevance
  • Aetna
  • Aspirus Health Plan
  • Blue Cross Blue Shield of Michigan
  • HCSC
  • Alliant Health Plans
  • +7 more carriersWith a free account

Plan types Dr. Mercier accepts, by number of carriers

  1. HMO8
  2. PPO8
  3. EPO4
  4. Medicare3
  5. Medicaid2
  6. POS2

Source: Dmand AI Insurance Network Data

Sources for Dr. Gustavo A. Mercier Jr.'s profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Clinical trials and co-investigatorsDmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Gustavo A. Mercier Jr.

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. Gustavo A. Mercier Jr.'s NPI number?

Dr. Gustavo A. Mercier Jr.'s NPI number is 1316986904. It was assigned on June 6, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Gustavo A. Mercier Jr.?

Dr. Gustavo A. Mercier Jr. is a diagnostic radiologist in Boston, Massachusetts. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).

Where does Dr. Gustavo A. Mercier Jr. practice?

Dr. Mercier practices at 450 Brookline Avenue, Boston, MA 02115. Dr. Mercier's primary practice is Dana-Farber Cancer Institute in Boston, Massachusetts, part of Dana-Farber Cancer Institute. Dmand AI also links Dr. Mercier to 2 hospitals, 2 group practices and clinics and 2 medical groups.

What is Dr. Gustavo A. Mercier Jr.'s medical license number?

Dr. Mercier holds Massachusetts license 230051, one of the licenses on file in 6 states.

Which states has Dr. Gustavo A. Mercier Jr. been licensed in?

Dmand AI has state licenses on file for Dr. Mercier in Massachusetts (2006 to 2027), Texas (2004 to 2021), Oklahoma (1998 to 2009), Pennsylvania (1997 to 1998), Maryland (1995 to 1997) and New York (1991 to 1996).

Which hospitals is Dr. Gustavo A. Mercier Jr. affiliated with?

Dr. Mercier practices at Dana-Farber Cancer Institute in Boston, Massachusetts. Dr. Mercier is also affiliated with Massachusetts General Hospital. Dmand AI links Dr. Mercier to 2 more hospitals.

What medical group is Dr. Gustavo A. Mercier Jr. part of?

Dr. Mercier is linked to Brigham and Women's Hospital. Dmand AI links Dr. Mercier to 2 more medical groups.

Does Dr. Gustavo A. Mercier Jr. accept Medicare?

Yes. CMS data shows Dr. Mercier billed Medicare for 1,184 services in 2024, and Dr. Mercier accepts Medicare assignment.

How many Medicare patients does Dr. Gustavo A. Mercier Jr. see?

CMS counts 1,141 Medicare patients who saw Dr. Mercier in 2024, with an average age of 74.

Is Dr. Gustavo A. Mercier Jr. board certified?

Yes. Dr. Mercier is board certified in nuclear medicine by the American Board of Nuclear Medicine.

Show 7 more questionsShow fewer questions

What services does Dr. Gustavo A. Mercier Jr. bill to Medicare?

In 2024, Dr. Mercier's most billed Medicare services were nuclear medicine (78815), nuclear medicine (78816) and nuclear medicine (78306).

Where did Dr. Gustavo A. Mercier Jr. go to medical school?

Dr. Mercier graduated from Icahn School Of Medicine At Mount Sinai in 1990.

Has Dr. Gustavo A. Mercier Jr. received payments from drug or device companies?

CMS Open Payments shows $4,058 in general payments to Dr. Mercier from 2 companies from 2019 to 2022. The largest total came from Telix Pharmaceuticals.

How long has Dr. Gustavo A. Mercier Jr. been practicing?

Dr. Mercier graduated from medical school in 1990, 36 years ago.

Does Dr. Gustavo A. Mercier Jr. do research?

Dmand AI links 17 publications to Dr. Mercier, published from 2012 to 2025. Dr. Mercier has worked on 1 clinical trial.

Who does Dr. Gustavo A. Mercier Jr. publish with?

Dr. Mercier's most frequent co-authors are Rathan M. Subramaniam, MD, MPH, PhD (6 shared papers), Sara K. Meibom, MD (3 shared papers) and Minh Tam Truong, MD (2 shared papers).

What insurance does Dr. Gustavo A. Mercier Jr. accept?

Dr. Mercier is in network with 15 carriers, including Excellus BlueCross BlueShield, United Healthcare and Elevance. HMO plans come from the most carriers, 8. Check the plan with the practice before a visit.

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