Doctor profile · Federal record
Dr. Karen Obrien, MD
Hospice and Palliative Medicine (Internal Medicine) Physician (CMS: Hospice/Palliative Care) · Internal Medicine Physician · Boston, MA
- NPI 1508870957
- Accepts Medicare
- 37 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
55 Fruit S, Founders 600
Boston, MA 021142696
(617) 724-9197 - Mailing address
-
Po Box 9142, Mass General Physician Organization
Charlestown, MA 021299142
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- July 7, 2014
- Year of graduation
- 1989 — 37 yrs since
- Specialty taxonomy
- 207RH0002X — NUCC code
- State license (1)
- Massachusetts #76179
- Medicaid
- MA #3093891
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1508870957. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
678
Distinct HCPCS
6
Medicare allowed
$69,853
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 215 | 85 | $126 | |
G0316 |
Prolonged hospital inpatient or observation care evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by th | 163 | 64 | $32 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 138 | 67 | $84 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 72 | 68 | $184 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 65 | 29 | $153 | |
99443 |
Telephone medical discussion with physician, 21-30 minutes | 25 | 11 | $103 |
In context: peer comparison
Among 24 peers in this city , average services per provider: 62. This provider delivers 11× the peer median.Frequently asked questions
What is Dr. Karen Obrien's medical specialty?
Dr. Karen Obrien practices Hospice and Palliative Medicine (Internal Medicine) Physician in Boston, MA.
Where does Dr. Karen Obrien practice?
Dr. Karen Obrien practices at 55 Fruit S, Boston, MA 021142696. Office phone: 6177249197.
What is Dr. Karen Obrien's NPI?
Dr. Karen Obrien's National Provider Identifier (NPI) is 1508870957, issued by NPPES.
Does Dr. Karen Obrien accept Medicare assignment?
Yes. Dr. Karen Obrien accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Karen Obrien commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Prolonged hospital inpatient or observation care evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by th (HCPCS G0316); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.