Dr. Chasen J. Greig, MD
- Medicare services, 2024
- 248
- Medicare patients, 2024
- 194
- Part D claims, 2018
- 12
- Publications
- 16
- Hospital affiliations
- 1
- Practice address
- 114 Woodland Street & 500 Blue Hills Avenue, Hartford, CT 06105
- Practice phone
- Call (860) 714-5541
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Greig'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. Chasen J. Greig is a general surgeon in Hartford, Connecticut
Dr. Greig practices at Saint Francis Hospital in Hartford, Connecticut, part of Trinity Health.
Dr. Greig's NPI, 1649513466, was assigned on March 29, 2013. Dr. Greig graduated from Temple University School of Medicine in 2013. Dr. Greig holds Connecticut license 69152.
- NPI
- 1649513466NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2961638861
- NPI enumeration date
- March 29, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (860) 714-5541
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Chasen J. Greig practices at Saint Francis Hospital in Hartford, Connecticut
Dr. Greig's primary practice is Saint Francis Hospital, at 114 Woodland Street & 500 Blue Hills Avenue, Hartford, CT 06105 in Hartford County. The practice phone is (860) 714-5541.
- Saint Francis Hospital114 Woodland Street & 500 Blue Hills Avenue, Hartford, CT 06105 · Hartford CountyPhone(860) 714-5541
Source: Dmand AI Affiliation Data
Dr. Chasen J. Greig is affiliated with 1 site of care and 1 medical group
Dr. Greig's primary practice is Saint Francis Hospital in Hartford, Connecticut, part of Trinity Health. The medical group on file is Trinity Health Of New England Medical Group.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Chasen J. Greig's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Greig practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Saint Francis Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Trinity Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Chasen J. Greig is one of 303 general surgeons in Connecticut
Surgery is Dr. Greig's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Greig is licensed in Connecticut.
Specialties and state licenses
- Surgery, ConnecticutPrimary
General surgeons near Dr. Greig
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. Chasen J. Greig billed Medicare for 248 services in 2024
CMS data shows 248 Medicare services from Dr. Greig across 5 procedure codes in 2024, for 194 Medicare patients. Medicare paid $27,675 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Greig's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1752024: 24842%
Dr. Greig compared with the Connecticut median for general surgeons, 2024
- Dr. Greig
- Connecticut median
- Medicare services
- 248vs 1092.3 times
- Medicare patients
- 194vs 952.0 times
- Part D claims
- 12vs 2552% below
Medians across 295 general surgeons in Connecticut with Dmand AI profiles that report each measure.
Dr. Greig'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. Greig and other general surgeons in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Chasen J. Greig treated 194 Medicare patients in 2024, average age 79
CMS counts 194 Medicare patients who saw Dr. Greig in 2024. The largest group is 85 and over, with 71 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 37% 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. Greig's median patient age at 76, with 50% women.
Dr. Greig's Medicare patients by age, 2024
Dr. Greig's Medicare patients by sex, 2024
- Women11258%
- Men8242%
Chronic conditions among Dr. Greig's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis56%
- Mood disorders54%
- Depression49%
- Ischemic heart disease49%
- Atrial fibrillation47%
- Diabetes46%
Share of Medicare patients with each condition. A patient can have several.
Dr. Greig's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women50%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Chasen J. Greig wrote 12 Medicare Part D claims in 2018
In 2018, Dr. Greig wrote 12 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $46 in total drug cost.
Dr. Greig's most prescribed drugs by claims, 2018
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Dr. Chasen J. Greig takes part in Medicare
Dr. Greig accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Chasen J. Greig has 16 publications on record
Dmand AI links 16 papers to Dr. Greig, published from 2016 to 2025. 2018 was the busiest year, with 3. The most frequent topics are Mice, Inbred C57BL, Cell Proliferation and Intestinal Mucosa. Dr. Greig has published most often in Injury. Dr. Greig's most frequent co-authors are Robert Anthony Cowles, MD, Manuel Anthony Moutinho, MD and Lucy Zhang, MD.
Dr. Greig's papers by year, 2016 to 2025
Topics Dr. Greig writes about most
- Mice, Inbred C57BL
- Cell Proliferation
- Intestinal Mucosa
- Mice, Knockout
- Ileum
- Serotonin
- Signal Transduction
- Homeostasis
Dr. Greig's most frequent co-authors
- Robert Anthony Cowles, MD9 shared papers
- Manuel Anthony Moutinho, MD4 shared papers
- Lucy Zhang, MD3 shared papers
Recent publications by Dr. Greig
A Management Algorithm for High-Grade Acute Cholecystitis in High-Risk Patients (opens in a new tab)
JSLS
Nat Commun
See who Dr. Greig researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Greig 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. Chasen J. Greig received $374 in industry payments from 2021 to 2024
CMS Open Payments shows 5 general payments to Dr. Greig from 4 drug and device companies from 2021 to 2024. Food and beverage make up the largest share, 100% of the total. Acumed LLC paid the most, $167.
General payments to Dr. Greig by program year, 2021 to 2024
Companies that paid Dr. Greig the most, 2021 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Chasen J. Greig graduated from Temple University School of Medicine
Dr. Greig graduated from Temple University School of Medicine in 2013.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Chasen J. Greig'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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 |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Chasen J. Greig
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. Chasen J. Greig's NPI number?
Dr. Chasen J. Greig's NPI number is 1649513466. It was assigned on March 29, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Chasen J. Greig?
Dr. Chasen J. Greig is a general surgeon in Hartford, Connecticut. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Chasen J. Greig practice?
Dr. Greig practices at 114 Woodland Street & 500 Blue Hills Avenue, Hartford, CT 06105. Dr. Greig's primary practice is Saint Francis Hospital in Hartford, Connecticut, part of Trinity Health.
What is Dr. Chasen J. Greig's office phone number?
The practice phone on file for Dr. Greig is (860) 714-5541.
What is Dr. Chasen J. Greig's medical license number?
Dr. Greig holds Connecticut license 69152.
Which hospitals is Dr. Chasen J. Greig affiliated with?
Dr. Greig practices at Saint Francis Hospital in Hartford, Connecticut.
What medical group is Dr. Chasen J. Greig part of?
Dr. Greig is linked to Trinity Health Of New England Medical Group.
Does Dr. Chasen J. Greig accept Medicare?
Yes. CMS data shows Dr. Greig billed Medicare for 248 services in 2024, and Dr. Greig accepts Medicare assignment.
How many Medicare patients does Dr. Chasen J. Greig see?
CMS counts 194 Medicare patients who saw Dr. Greig in 2024, with an average age of 79.
What services does Dr. Chasen J. Greig bill to Medicare?
In 2024, Dr. Greig's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99223) and critical care (99291).
Show 6 more questionsShow fewer questions
Where did Dr. Chasen J. Greig go to medical school?
Dr. Greig graduated from Temple University School of Medicine in 2013.
What drugs does Dr. Chasen J. Greig prescribe most?
In 2018 Medicare Part D data, Dr. Greig's most prescribed drugs by claims were Oxycodone HCl.
Has Dr. Chasen J. Greig received payments from drug or device companies?
CMS Open Payments shows $374 in general payments to Dr. Greig from 4 companies from 2021 to 2024. The largest total came from Acumed LLC.
How long has Dr. Chasen J. Greig been practicing?
Dr. Greig graduated from medical school in 2013, 13 years ago.
Does Dr. Chasen J. Greig do research?
Dmand AI links 16 publications to Dr. Greig, published from 2016 to 2025.
Who does Dr. Chasen J. Greig publish with?
Dr. Greig's most frequent co-authors are Robert Anthony Cowles, MD (9 shared papers), Manuel Anthony Moutinho, MD (4 shared papers) and Lucy Zhang, MD (3 shared papers).
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