Doctor profile · Federal record
Dr. Ryan Casarella, M.D.
Emergency Medicine Physician (CMS: Emergency Medicine) · Emergency Medicine Physician · Greenwich, CT
- NPI 1740643998
- Accepts Medicare
- 10 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
5 Perryridge RD
Greenwich, CT 068304697
(203) 863-3000
Credentials & registration
- NPI registered
- April 2016 — 10 yrs on file
- Profile last updated
- February 11, 2025
- Year of graduation
- 2016 — 10 yrs since
- Specialty taxonomy
- 207P00000X — NUCC code
- State licenses (2)
- New York #314567-01 · Nevada #19025
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1740643998. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
458
Distinct HCPCS
7
Medicare allowed
$92,842
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99291 |
Critical care, first 30-74 minutes | 139 | 138 | $252 | |
99285 |
Emergency department visit with high level of medical decision making | 107 | 106 | $209 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 81 | 81 | $202 | |
99284 |
Emergency department visit with moderate level of medical decision making | 61 | 61 | $143 | |
99238 |
Hospital discharge day management, 30 minutes or less | 31 | 31 | $95 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 22 | 21 | $153 | |
99236 |
Initial hospital care with same-day admission and discharge with high level of medical decision making, per day, if using time, at least 85 minutes | 17 | 17 | $242 |
In context: peer comparison
Among 5 peers in Greenwich Emergency Medicine Physician, average services per provider: 64. This provider delivers 7.2× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
55
Patients
55
Total drug cost
$438
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Naproxen | Generic | 21 | 21 | $114 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 12 | 12 | $116 |
| Cephalexin | Generic | 11 | 11 | $125 |
| Methylprednisolone | Generic | 11 | 11 | $83 |
Hospital affiliations
Frequently asked questions
What is Dr. Ryan Casarella's medical specialty?
Dr. Ryan Casarella practices Emergency Medicine Physician in Greenwich, CT.
Where does Dr. Ryan Casarella practice?
Dr. Ryan Casarella practices at 5 Perryridge RD, Greenwich, CT 068304697. Office phone: 2038633000.
What is Dr. Ryan Casarella's NPI?
Dr. Ryan Casarella's National Provider Identifier (NPI) is 1740643998, issued by NPPES.
Does Dr. Ryan Casarella accept Medicare assignment?
Yes. Dr. Ryan Casarella accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ryan Casarella commonly perform?
Top Medicare-reported procedures in 2023: Critical care (HCPCS 99291); Emergency department visit with high level of medical decision making (HCPCS 99285); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.