Doctor profile · Federal record
Dr. Cassis Guy, M.D.
Emergency Medicine Physician (CMS: Emergency Medicine) · Student in an Organized Health Care Education/Training Program · Brooklyn, NY
- NPI 1629418058
- Accepts Medicare
- 13 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
450 Clarkson Ave # 1228
Brooklyn, NY 112032012
(718) 245-3318
fax (718) 245-4799
Credentials & registration
- NPI registered
- June 2013 — 13 yrs on file
- Profile last updated
- March 24, 2020
- Year of graduation
- 2013 — 13 yrs since
- Specialty taxonomy
- 207P00000X — NUCC code
- State license (1)
- Connecticut #56269
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1629418058. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
162
Distinct HCPCS
4
Medicare allowed
$25,275
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99284 |
Emergency department visit with moderate level of medical decision making | 58 | 58 | $125 | |
99285 |
Emergency department visit with high level of medical decision making | 47 | 46 | $182 | |
99291 |
Critical care, first 30-74 minutes | 36 | 35 | $221 | |
99283 |
Emergency department visit with low level of medical decision making | 21 | 21 | $74 |
In context: peer comparison
Among 223 peers in this city , average services per provider: 74. This provider delivers 2.2× the peer median.Frequently asked questions
What is Dr. Cassis Guy's medical specialty?
Dr. Cassis Guy practices Emergency Medicine Physician in Brooklyn, NY.
Where does Dr. Cassis Guy practice?
Dr. Cassis Guy practices at 450 Clarkson Ave # 1228, Brooklyn, NY 112032012. Office phone: 7182453318.
What is Dr. Cassis Guy's NPI?
Dr. Cassis Guy's National Provider Identifier (NPI) is 1629418058, issued by NPPES.
Does Dr. Cassis Guy accept Medicare assignment?
Yes. Dr. Cassis Guy accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Cassis Guy commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with moderate level of medical decision making (HCPCS 99284); Emergency department visit with high level of medical decision making (HCPCS 99285); Critical care (HCPCS 99291). Source: CMS Medicare Physician & Other Practitioners file.