Doctor profile · Federal record
Dr. Keith Marill, MD
Emergency Medicine Physician (CMS: Emergency Medicine) · Emergency Medicine Physician · Internal Medicine Physician · Boston, MA
- NPI 1073503371
- Accepts Medicare
- 38 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
55 Fruit St
Boston, MA 021142696
(617) 643-8595
fax (617) 724-0917
Credentials & registration
- NPI registered
- October 2005 — 21 yrs on file
- Profile last updated
- May 24, 2019
- Year of graduation
- 1988 — 38 yrs since
- Specialty taxonomy
- 207P00000X — NUCC code
- State licenses (2)
- Pennsylvania #MD448123 · Massachusetts #214889
- Medicaid
- MA #0199010
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1073503371. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
480
Distinct HCPCS
9
Medicare allowed
$74,885
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99285 |
Emergency department visit with high level of medical decision making | 136 | 134 | $183 | |
99291 |
Critical care, first 30-74 minutes | 94 | 93 | $225 | |
99284 |
Emergency department visit with moderate level of medical decision making | 86 | 86 | $126 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 58 | 58 | $182 | |
99283 |
Emergency department visit with low level of medical decision making | 29 | 28 | $75 | |
93308 |
Ultrasound of heart, follow-up | 24 | 24 | $26 | |
99239 |
Hospital discharge day management, more than 30 minutes | 21 | 21 | $123 | |
99238 |
Hospital discharge day management, 30 minutes or less | 20 | 20 | $84 | |
76604 |
Ultrasound scan of chest | 12 | 12 | $29 |
In context: peer comparison
Among 183 peers in Boston Emergency Medicine Physician, average services per provider: 65. This provider delivers 7.4× the peer median.Frequently asked questions
What is Dr. Keith Marill's medical specialty?
Dr. Keith Marill practices Emergency Medicine Physician in Boston, MA.
Where does Dr. Keith Marill practice?
Dr. Keith Marill practices at 55 Fruit St, Boston, MA 021142696. Office phone: 6176438595.
What is Dr. Keith Marill's NPI?
Dr. Keith Marill's National Provider Identifier (NPI) is 1073503371, issued by NPPES.
Does Dr. Keith Marill accept Medicare assignment?
Yes. Dr. Keith Marill accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Keith Marill commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with high level of medical decision making (HCPCS 99285); Critical care (HCPCS 99291); Emergency department visit with moderate level of medical decision making (HCPCS 99284). Source: CMS Medicare Physician & Other Practitioners file.