Dr. Gregory James Mitchon, MD
- Medicare services, 2024
- 237
- Medicare patients, 2024
- 235
- MIPS score, 2024
- 100
- Hospital affiliations
- 3
- Medical group
- 1
- Practice address
- 55 North Ave, Mendon, MA 01756
- Practice phone
- Call (508) 334-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Umass Memorial Medical Center
Mendon, Massachusetts
Find Dr. Mitchon's professional email, personal email and mobile number
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Dr. Gregory James Mitchon is an anesthesiologist in Mendon, Massachusetts
Dr. Mitchon practices at Umass Memorial Medical Center in Mendon, Massachusetts.
Dr. Mitchon's NPI, 1902174766, was assigned on December 8, 2011. Dr. Mitchon holds Massachusetts license 282487.
- NPI
- 1902174766NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6800107079
- NPI enumeration date
- December 8, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (508) 334-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory James Mitchon practices at Umass Memorial Medical Center in Mendon, Massachusetts
Dr. Mitchon's primary practice is Umass Memorial Medical Center, at 55 North Ave, Mendon, MA 01756 in Worcester County. The practice phone is (508) 334-1000.
- Umass Memorial Medical Center55 North Ave, Mendon, MA 01756 · Worcester CountyPhone(508) 334-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Gregory James Mitchon is affiliated with 4 sites of care and 1 medical group
Dr. Mitchon's primary practice is Umass Memorial Medical Center in Mendon, Massachusetts. Dr. Mitchon is also affiliated with UMass Memorial Medical Center - University Campus. The medical group on file is UMass Memorial Medical Group. Dmand AI also links Dr. Mitchon to 2 more hospitals, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gregory James Mitchon's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mitchon practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Umass Memorial Medical Center | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory James Mitchon is one of 1,552 anesthesiologists in Massachusetts
Anesthesiology is Dr. Mitchon's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dmand AI has Dr. Mitchon's licenses on file in 3 states: Massachusetts, Texas and Washington.
Specialties and state licenses
- Anesthesiology, MassachusettsPrimary
- Pharmacist, Texas
- Washington license
Anesthesiologists near Dr. Mitchon
Counts of anesthesiologists 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. Gregory James Mitchon billed Medicare for 237 services in 2024
CMS data shows 237 Medicare services from Dr. Mitchon across 9 procedure codes in 2024, for 235 Medicare patients. Medicare paid $28,299 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Mitchon's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1132024: 1163%
- Anesthesia
- 2023: 442024: 5525%
- Surgery
- 2023: 572024: 5012%
- Imaging
- 2023: 382024: 1658%
Dr. Mitchon compared with the Massachusetts median for anesthesiologists, 2024
- Dr. Mitchon
- Massachusetts median
- Medicare services
- 237vs 12688% above
- Medicare patients
- 235vs 20018% above
Medians across 1,366 anesthesiologists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Mitchon'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. Gregory James Mitchon treated 235 Medicare patients in 2024, average age 72
CMS counts 235 Medicare patients who saw Dr. Mitchon in 2024. The largest group is 65 to 74, with 92 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 35% are also on Medicaid. Their average risk score is 2.29, 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. Mitchon's median patient age at 69, with 43% women.
Dr. Mitchon's Medicare patients by age, 2024
Dr. Mitchon's Medicare patients by sex, 2024
- Women10344%
- Men13256%
Chronic conditions among Dr. Mitchon's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease54%
- Mood disorders46%
- Heart failure45%
- Anxiety43%
- Arthritis42%
- Chronic kidney disease42%
Share of Medicare patients with each condition. A patient can have several.
Dr. Mitchon'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
- Women43%
- Men57%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregory James Mitchon 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. Mitchon for performance year 2024, reported through an alternative payment model (APM). Dr. Mitchon accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Mitchon's MIPS scores, performance year 2024
- 100of 100Final score
- 83of 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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Sources for Dr. Gregory James Mitchon'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 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) |
| 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) |
| 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. Gregory James Mitchon
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What is Dr. Gregory James Mitchon's NPI number?
Dr. Gregory James Mitchon's NPI number is 1902174766. It was assigned on December 8, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory James Mitchon?
Dr. Gregory James Mitchon is an anesthesiologist in Mendon, Massachusetts. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Gregory James Mitchon practice?
Dr. Mitchon practices at 55 North Ave, Mendon, MA 01756. Dr. Mitchon's primary practice is Umass Memorial Medical Center in Mendon, Massachusetts. Dmand AI also links Dr. Mitchon to 2 hospitals.
What is Dr. Gregory James Mitchon's office phone number?
The practice phone on file for Dr. Mitchon is (508) 334-1000.
What is Dr. Gregory James Mitchon's medical license number?
Dr. Mitchon holds Massachusetts license 282487, one of the licenses on file in 3 states.
Which states has Dr. Gregory James Mitchon been licensed in?
Dmand AI has state licenses on file for Dr. Mitchon in Massachusetts, Texas and Washington.
Which hospitals is Dr. Gregory James Mitchon affiliated with?
Dr. Mitchon is affiliated with UMass Memorial Medical Center - University Campus. Dmand AI links Dr. Mitchon to 2 more hospitals.
What medical group is Dr. Gregory James Mitchon part of?
Dr. Mitchon is linked to UMass Memorial Medical Group.
Does Dr. Gregory James Mitchon accept Medicare?
Yes. CMS data shows Dr. Mitchon billed Medicare for 237 services in 2024, and Dr. Mitchon accepts Medicare assignment.
What is Dr. Gregory James Mitchon's MIPS score?
Dr. Mitchon's MIPS final score for performance year 2024 is 100 out of 100, reported through an alternative payment model (APM).
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How many Medicare patients does Dr. Gregory James Mitchon see?
CMS counts 235 Medicare patients who saw Dr. Mitchon in 2024, with an average age of 72.
What services does Dr. Gregory James Mitchon bill to Medicare?
In 2024, Dr. Mitchon's most billed Medicare services were critical care (99291), hospital inpatient care (99232) and surgery: heart and blood vessels (36620).
How long has Dr. Gregory James Mitchon been practicing?
Dr. Mitchon graduated from medical school in 2015, 11 years ago.
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