Doctor profile · Federal record
Dr. Evan Gwyn, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Boston, MA
- NPI 1154558500
- Accepts Medicare
- 17 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 4 locations .
- Primary practice
-
55 Fruit Street, Hospital Medicine Unit, Blake 1500
Boston, MA 02114
(617) 724-3874
fax (617) 724-9428 - Additional location
-
1153 Centre St
Jamaica Plain, MA 021303446
(617) 983-7000 - Additional location
-
330 Brookline Ave, Deaconess 311
Boston, MA 022155400
(504) 669-3411 - Additional location
-
75 Francis St
Boston, MA 021156110
(617) 732-5500 - Mailing address
-
330 Brookline Ave, Span 2
Boston, MA 02215
Show 1 more location
Credentials & registration
- NPI registered
- June 2009 — 17 yrs on file
- Profile last updated
- December 29, 2025
- Year of graduation
- 2009 — 17 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Massachusetts #240175
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1154558500. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
176
Distinct HCPCS
4
Medicare allowed
$19,562
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 90 | 32 | $84 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 43 | 27 | $126 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 29 | 29 | $184 | |
99238 |
Hospital discharge day management, 30 minutes or less | 14 | 14 | $87 |
In context: peer comparison
Among 547 peers in this city , average services per provider: 81. This provider delivers 2.2× the peer median.Frequently asked questions
What is Dr. Evan Gwyn's medical specialty?
Dr. Evan Gwyn practices Internal Medicine Physician in Boston, MA.
Where does Dr. Evan Gwyn practice?
Dr. Evan Gwyn practices at 55 Fruit Street, Boston, MA 02114. Office phone: 6177243874.
What is Dr. Evan Gwyn's NPI?
Dr. Evan Gwyn's National Provider Identifier (NPI) is 1154558500, issued by NPPES.
Does Dr. Evan Gwyn accept Medicare assignment?
Yes. Dr. Evan Gwyn accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Evan Gwyn commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.