Dr. Cassis Guy, MD
- Medicare services, 2024
- 209
- Medicare patients, 2024
- 214
- Part D claims, 2024
- 47
- Hospital affiliations
- 1
- Medical groups
- 2
- Practice address
- 267 Grant Street, Bridgeport, CT 06610
- Practice phone
- Call (203) 384-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Guy's professional email, personal email and mobile number
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Dr. Cassis Guy is an emergency medicine physician in Bridgeport, Connecticut
Dr. Guy practices at Bridgeport Hospital in Bridgeport, Connecticut, part of Yale New Haven Health System.
Dr. Guy's NPI, 1629418058, was assigned on June 30, 2013. Dr. Guy graduated from State University of New York at Stony Brook, School of Medicine in 2013. Dr. Guy holds Connecticut license 56269.
- NPI
- 1629418058NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0547532475
- NPI enumeration date
- June 30, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (203) 384-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- 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. Cassis Guy practices at Bridgeport Hospital in Bridgeport, Connecticut
Dr. Guy's primary practice is Bridgeport Hospital, at 267 Grant Street, Bridgeport, CT 06610 in Fairfield County. The practice phone is (203) 384-3000.
- Bridgeport Hospital267 Grant Street, Bridgeport, CT 06610 · Fairfield CountyPhone(203) 384-3000
Source: Dmand AI Affiliation Data
Dr. Cassis Guy is affiliated with 2 sites of care and 2 medical groups
Dr. Guy's primary practice is Bridgeport Hospital in Bridgeport, Connecticut, part of Yale New Haven Health System. The medical group on file is Bridgeport Hospital. Dmand AI also links Dr. Guy to 1 more group practice or clinic and 1 medical group, each named with a free account. Dr. Guy's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Cassis Guy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Guy practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Bridgeport Hospital | 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. Cassis Guy is one of 683 emergency medicine physicians in Connecticut
Emergency medicine is Dr. Guy's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Guy is licensed in Connecticut.
Specialties and state licenses
- Emergency medicine, ConnecticutPrimary
Emergency medicine physicians near Dr. Guy
Counts of emergency medicine 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. Cassis Guy billed Medicare for 209 services in 2024
CMS data shows 209 Medicare services from Dr. Guy across 4 procedure codes in 2024, for 214 Medicare patients. Medicare paid $22,966 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Guy's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1622024: 20929%
Dr. Guy compared with the Connecticut median for emergency medicine physicians, 2024
- Dr. Guy
- Connecticut median
- Medicare services
- 209vs 24314% below
- Medicare patients
- 214vs 25014% below
- Part D claims
- 13vs 4873% below
Medians across 695 emergency medicine physicians in Connecticut with Dmand AI profiles that report each measure.
Dr. Guy'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. Cassis Guy treated 214 Medicare patients in 2024, average age 74
CMS counts 214 Medicare patients who saw Dr. Guy in 2024. The largest group is 65 to 74, with 68 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 39% are also on Medicaid. Their average risk score is 2.27, 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. Guy's median patient age at 69, with 58% women.
Dr. Guy's Medicare patients by age, 2024
Dr. Guy's Medicare patients by sex, 2024
- Women10047%
- Men11453%
Chronic conditions among Dr. Guy's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Mood disorders45%
- Ischemic heart disease44%
- Anxiety43%
- Diabetes43%
- Depression39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Guy'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
- Women58%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Cassis Guy wrote 47 Medicare Part D claims in 2024
In 2024, Dr. Guy wrote 47 Medicare Part D claims for 39 patients. 98% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $88 in total drug cost.
Dr. Guy's Part D claims by kind of drug, 2024
- Generic46 claims98%
- Brand-name and other1 claims2%
Dr. Guy's most prescribed drugs by claims, 2017
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. Guy's Part D claims, 2024
- Antibiotics47%22 of 47 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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
How Dr. Cassis Guy takes part in Medicare
Dr. Guy 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. Cassis Guy graduated from State University of New York at Stony Brook, School of Medicine
Dr. Guy graduated from State University of New York at Stony Brook, School of Medicine in 2013.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Cassis Guy'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) |
| 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. Cassis Guy
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. Cassis Guy's NPI number?
Dr. Cassis Guy's NPI number is 1629418058. It was assigned on June 30, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Cassis Guy?
Dr. Cassis Guy is an emergency medicine physician in Bridgeport, Connecticut. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Cassis Guy practice?
Dr. Guy practices at 267 Grant Street, Bridgeport, CT 06610. Dr. Guy's primary practice is Bridgeport Hospital in Bridgeport, Connecticut, part of Yale New Haven Health System. Dmand AI also links Dr. Guy to 1 group practice or clinic and 1 medical group.
What is Dr. Cassis Guy's office phone number?
The practice phone on file for Dr. Guy is (203) 384-3000.
What is Dr. Cassis Guy's medical license number?
Dr. Guy holds Connecticut license 56269.
Which hospitals is Dr. Cassis Guy affiliated with?
Dr. Guy practices at Bridgeport Hospital in Bridgeport, Connecticut.
What medical group is Dr. Cassis Guy part of?
Dr. Guy is linked to Bridgeport Hospital. Dmand AI links Dr. Guy to 1 more medical group.
Does Dr. Cassis Guy accept Medicare?
Yes. CMS data shows Dr. Guy billed Medicare for 209 services in 2024, and Dr. Guy accepts Medicare assignment.
How many Medicare patients does Dr. Cassis Guy see?
CMS counts 214 Medicare patients who saw Dr. Guy in 2024, with an average age of 74.
What services does Dr. Cassis Guy bill to Medicare?
In 2024, Dr. Guy's most billed Medicare services were emergency department visit (99284), emergency department visit (99285) and critical care (99291).
Show 3 more questionsShow fewer questions
Where did Dr. Cassis Guy go to medical school?
Dr. Guy graduated from State University of New York at Stony Brook, School of Medicine in 2013.
What drugs does Dr. Cassis Guy prescribe most?
In 2017 Medicare Part D data, Dr. Guy's most prescribed drugs by claims were Cephalexin.
How long has Dr. Cassis Guy been practicing?
Dr. Guy graduated from medical school in 2013, 13 years ago.
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