Dr. Fabrizio Michelassi, MD
- Medicare services, 2022
- 12
- Medicare patients, 2024
- 17
- Part D claims, 2024
- 15
- Publications
- 134
- Clinical trials
- 1
- Practice address
- 5 Perryridge Rd, Greenwich, CT 06830
- Practice phone
- Call (203) 863-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Michelassi's professional email, personal email and mobile number
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Dr. Fabrizio Michelassi is a general surgeon in Greenwich, Connecticut
Dr. Michelassi practices at Greenwich Hospital in Greenwich, Connecticut, part of Yale New Haven Health System.
Dr. Michelassi's NPI, 1952316499, was assigned on July 31, 2006. Dr. Michelassi graduated from University of Pisa Faculty of Medicine in 1975. Dr. Michelassi's New York license number on file is 140048.
- NPI
- 1952316499NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8921076647
- NPI enumeration date
- July 31, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (203) 863-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 77
- Medical school graduation
- 1975
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Fabrizio Michelassi practices at Greenwich Hospital in Greenwich, Connecticut
Dr. Michelassi's primary practice is Greenwich Hospital, at 5 Perryridge Rd, Greenwich, CT 06830 in Fairfield County. The practice phone is (203) 863-3000.
- Greenwich Hospital5 Perryridge Rd, Greenwich, CT 06830 · Fairfield CountyPhone(203) 863-3000
Source: Dmand AI Affiliation Data
Dr. Fabrizio Michelassi is affiliated with 2 sites of care and 1 medical group
Dr. Michelassi's primary practice is Greenwich Hospital in Greenwich, Connecticut, part of Yale New Haven Health System. The medical group on file is Weill Cornell Physicians. Dmand AI also links Dr. Michelassi to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Fabrizio Michelassi's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Michelassi practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Greenwich Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Fabrizio Michelassi is one of 303 general surgeons in Connecticut
Surgery is Dr. Michelassi's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Michelassi is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Michelassi's licenses on file in 4 states: New York, Florida, New Jersey and Illinois.
Specialties and state licenses
- Surgery, New YorkPrimary
- Florida license
- New Jersey license
- Illinois license
Clinical focus
Dmand AI lists colon removal and intestinal or bowel obstruction among the conditions Dr. Michelassi treats.
General surgeons near Dr. Michelassi
Counts of general surgeons 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. Fabrizio Michelassi billed Medicare for 12 services in 2022
CMS data shows 12 Medicare services from Dr. Michelassi across 1 procedure code in 2022, all of them office visits, for 17 Medicare patients. Medicare paid $2,471 for them. Every service was in an office.
Dr. Michelassi's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 112022: 129%
Dr. Michelassi compared with the Connecticut median for general surgeons, 2022
- Dr. Michelassi
- Connecticut median
- Medicare services
- 12vs 10989% below
- Medicare patients
- 17vs 9582% below
- Part D claims
- 20vs 2520% below
Medians across 295 general surgeons in Connecticut with Dmand AI profiles that report each measure.
Dr. Michelassi's most billed Medicare procedure codes, 2022
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. Michelassi?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Michelassi and other general surgeons in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Fabrizio Michelassi treated 17 Medicare patients in 2024, average age 75
CMS counts 17 Medicare patients who saw Dr. Michelassi in 2024. 75% of them have high cholesterol. Their average risk score is 1.62, 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. Michelassi's median patient age at 54, with 29% women.
Chronic conditions among Dr. Michelassi's Medicare patients, 2024
- High cholesterol75%
Share of Medicare patients with each condition. A patient can have several.
Dr. Michelassi's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 54
Patient panel by sex, all payers
- Women29%
- Men71%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Fabrizio Michelassi wrote 15 Medicare Part D claims in 2024
In 2024, Dr. Michelassi wrote 15 Medicare Part D claims. 100% of them were for generic drugs. They cover 1 drug, with $1,392 in total drug cost. In 2022, CMS named 20 claims across 1 drug.
Dr. Michelassi's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Michelassi's Part D claims, 2024
- Antibiotics80%12 of 15 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 202023: 20No change
Drugs named by CMS: 1 in 2023, 1 in 2022.
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. Fabrizio Michelassi scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Michelassi for performance year 2024, reported through an alternative payment model (APM). Dr. Michelassi accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Michelassi's MIPS scores, performance year 2024
- 100of 100Final score
- 85.3of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Fabrizio Michelassi has 134 publications on record
Dmand AI links 134 papers to Dr. Michelassi, published from 2007 to 2024. 2016 was the busiest year, with 4. The most frequent topics are Adenocarcinoma, Postoperative Complications and Crohn Disease. Dr. Michelassi has published most often in Ann Surg. Dr. Michelassi's most frequent co-authors are Heather Lynn Yeo, MD, Alessandro Fichera, MD and Richard B. Arenas, MD.
Dr. Michelassi's papers by year, 2009 to 2024
Topics Dr. Michelassi writes about most
- Adenocarcinoma
- Postoperative Complications
- Crohn Disease
- Colonic Neoplasms
- Colorectal Neoplasms
- Colectomy
- General Surgery
- Pancreatic Neoplasms
Dr. Michelassi's most frequent co-authors
- Heather Lynn Yeo, MD10 shared papers
- Alessandro Fichera, MD8 shared papers
- Richard B. Arenas, MD5 shared papers
Recent publications by Dr. Michelassi
J Laparoendosc Adv Surg Tech A
See who Dr. Michelassi researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Michelassi works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Fabrizio Michelassi has worked on 1 clinical trial
Dmand AI links Dr. Michelassi to 1 clinical trial. 1 is still active or recruiting. Conditions studied include Crohn Disease and Inflammatory Bowel Diseases.
Conditions in Dr. Michelassi's trials
- Crohn Disease
- Inflammatory Bowel Diseases
Investigators on the most trials with Dr. Michelassi
- Steven N. Carter, MD1 shared trial
- Alessandro Fichera, MD1 shared trial
- Hiroko Kunitake, MD1 shared trial
Recent clinical trials with Dr. Michelassi
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Fabrizio Michelassi has 39 awards and honors on record
Dmand AI lists 39 awards for Dr. Michelassi, most recently America's Top Doctors in 2014.
Awards and honors for Dr. Michelassi
- 2014
- America's Top Doctors
- Faculty Teaching Award, Excellence in Surgical Teaching and Outstanding Commitment to Resident Education, Chief General Surgery Residents of the Department of Surgery
- New York Magazine: Top Doctors
- Top Doctors: New York Metro Area
- 2013
- America's Top Doctors for Cancer
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Fabrizio Michelassi graduated from University of Pisa Faculty of Medicine
Dr. Michelassi graduated from University of Pisa Faculty of Medicine in 1975. Dr. Michelassi is a member of Academy of Surgical Research, American Board of Surgery, ACS, American Gastroenterologic Association, American Pancreatic Association and American Society of Clinical Oncology.
- Medical school
- Board certified in surgery
Source: Dmand AI Professional Profile Data
Dr. Fabrizio Michelassi accepts plans from 11 insurance carriers
Dr. Michelassi is in network with 11 carriers, including Aetna, Excellus BlueCross BlueShield and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Excellus BlueCross BlueShield
- Blue Cross Blue Shield of Michigan
- Elevance
- Blue Cross Blue Shield of Massachusetts
- Cigna
- HCSC
- Regence Health Plans
- +3 more carriersWith a free account
Plan types Dr. Michelassi accepts, by number of carriers
- Medicare9
- PPO7
- HMO3
- POS3
- EPO2
- Medicaid2
Source: Dmand AI Insurance Network Data
Sources for Dr. Fabrizio Michelassi'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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Fabrizio Michelassi
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. Fabrizio Michelassi's NPI number?
Dr. Fabrizio Michelassi's NPI number is 1952316499. It was assigned on July 31, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Fabrizio Michelassi?
Dr. Fabrizio Michelassi is a general surgeon in Greenwich, Connecticut. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Fabrizio Michelassi practice?
Dr. Michelassi practices at 5 Perryridge Rd, Greenwich, CT 06830. Dr. Michelassi's primary practice is Greenwich Hospital in Greenwich, Connecticut, part of Yale New Haven Health System. Dmand AI also links Dr. Michelassi to 1 group practice or clinic.
What is Dr. Fabrizio Michelassi's office phone number?
The practice phone on file for Dr. Michelassi is (203) 863-3000.
What is Dr. Fabrizio Michelassi's medical license number?
Dr. Michelassi's New York license number on file is 140048, one of the licenses on file in 4 states.
Which states has Dr. Fabrizio Michelassi been licensed in?
Dmand AI has state licenses on file for Dr. Michelassi in New York (1979 to 2025), Florida (since 2022), New Jersey (2023 to 2027) and Illinois (1984 to 2008).
Which hospitals is Dr. Fabrizio Michelassi affiliated with?
Dr. Michelassi practices at Greenwich Hospital in Greenwich, Connecticut.
What medical group is Dr. Fabrizio Michelassi part of?
Dr. Michelassi is linked to Weill Cornell Physicians.
Does Dr. Fabrizio Michelassi accept Medicare?
Yes. CMS data shows Dr. Michelassi billed Medicare for 12 services in 2022, and Dr. Michelassi accepts Medicare assignment.
What is Dr. Fabrizio Michelassi's MIPS score?
Dr. Michelassi's MIPS final score for performance year 2024 is 100 out of 100, reported through an alternative payment model (APM).
Show 9 more questionsShow fewer questions
How many Medicare patients does Dr. Fabrizio Michelassi see?
CMS counts 17 Medicare patients who saw Dr. Michelassi in 2024, with an average age of 75.
Is Dr. Fabrizio Michelassi board certified?
Yes. Dr. Michelassi is board certified in surgery by the American Board of Surgery.
What services does Dr. Fabrizio Michelassi bill to Medicare?
In 2022, Dr. Michelassi's most billed Medicare services were office visit, new patient (99205).
Where did Dr. Fabrizio Michelassi go to medical school?
Dr. Michelassi graduated from University of Pisa Faculty of Medicine in 1975.
What drugs does Dr. Fabrizio Michelassi prescribe most?
In 2023 Medicare Part D data, Dr. Michelassi's most prescribed drugs by claims were Loperamide.
How long has Dr. Fabrizio Michelassi been practicing?
Dr. Michelassi graduated from medical school in 1975, 51 years ago.
Does Dr. Fabrizio Michelassi do research?
Dmand AI links 134 publications to Dr. Michelassi, published from 2007 to 2024. Dr. Michelassi has worked on 1 clinical trial.
Who does Dr. Fabrizio Michelassi publish with?
Dr. Michelassi's most frequent co-authors are Heather Lynn Yeo, MD (10 shared papers), Alessandro Fichera, MD (8 shared papers) and Richard B. Arenas, MD (5 shared papers).
What insurance does Dr. Fabrizio Michelassi accept?
Dr. Michelassi is in network with 11 carriers, including Aetna, Excellus BlueCross BlueShield and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
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