Doctor profile · Federal record
Dr. Karen Lasser, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Boston, MA
- NPI 1932235520
- Accepts Medicare
- 31 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
801 Massachusetts Ave, Crosstown 6B
Boston, MA 021182605
(617) 414-5951
fax (617) 414-9201 - Mailing address
-
720 Harrison Avenue, Dob 503
Boston, MA 02118
Credentials & registration
- NPI registered
- February 2007 — 19 yrs on file
- Profile last updated
- May 8, 2019
- Year of graduation
- 1995 — 31 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Massachusetts #145353
- Medicaid
- MA #110061795A
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1932235520. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
114
Distinct HCPCS
2
Medicare allowed
$11,049
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 90 | 59 | $104 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 24 | 22 | $70 |
In context: peer comparison
Among 547 peers in this city , average services per provider: 81. This provider delivers 1.4× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
2,137
Patients
450
Total drug cost
$280,972
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 352 | 73 | $4,686 |
| Amlodipine Besylate | Generic | 273 | 55 | $2,052 |
| Lisinopril | Generic | 199 | 52 | $2,405 |
| Metformin Hcl | Generic | 153 | 37 | $1,506 |
| Omeprazole | Generic | 148 | 33 | $2,089 |
| Fluticasone Propionate | Generic | 136 | 35 | $3,087 |
| Jardiance (Empagliflozin) | Brand | 133 | 26 | $123,793 |
| Losartan Potassium | Generic | 114 | 21 | $1,845 |
| Metoprolol Succinate | Generic | 108 | 20 | $1,767 |
| Trulicity (Dulaglutide) | Brand | 97 | 17 | $132,805 |
Hospital affiliations
Frequently asked questions
What is Dr. Karen Lasser's medical specialty?
Dr. Karen Lasser practices Internal Medicine Physician in Boston, MA.
Where does Dr. Karen Lasser practice?
Dr. Karen Lasser practices at 801 Massachusetts Ave, Boston, MA 021182605. Office phone: 6174145951.
What is Dr. Karen Lasser's NPI?
Dr. Karen Lasser's National Provider Identifier (NPI) is 1932235520, issued by NPPES.
Does Dr. Karen Lasser accept Medicare assignment?
Yes. Dr. Karen Lasser accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Karen Lasser commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.