Doctor profile · Federal record
Dr. Lawrence Blaszkowsky, MD
Medical Oncology Physician (CMS: Medical Oncology) · Hematology (Internal Medicine) Physician · Boston, MA
- NPI 1225028137
- Accepts Medicare
- 36 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
55 Fruit St, Hematology/Oncology
Boston, MA 021142621
(617) 724-1700
fax (617) 724-3166 - Additional location
-
75 Francis St
Boston, MA 021156110
(617) 732-5500 - Mailing address
-
Po Box 9142, Mass General Physician Organization
Charlestown, MA 021299142
Credentials & registration
- NPI registered
- October 2005 — 21 yrs on file
- Profile last updated
- January 29, 2026
- Year of graduation
- 1990 — 36 yrs since
- Specialty taxonomy
- 207RX0202X — NUCC code
- State license (1)
- Massachusetts #80772
- Medicaid
- MA #3153151
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1225028137. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
793
Distinct HCPCS
8
Medicare allowed
$111,777
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 243 | 118 | $140 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 224 | 68 | $194 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 111 | 39 | $126 | |
G2212 |
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or | 95 | 37 | $34 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 36 | 17 | $84 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 31 | 30 | $96 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 28 | 27 | $184 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 25 | 25 | $239 |
In context: peer comparison
Among 103 peers in this city , average services per provider: 67. This provider delivers 12× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
49
Patients
15
Total drug cost
$29,558
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prochlorperazine Maleate | Generic | 24 | 15 | $291 |
| Creon (Lipase/Protease/Amylase) | Brand | 13 | 0 | $29,221 |
| Ondansetron Hcl | Generic | 12 | 0 | $46 |
Hospital affiliations
Frequently asked questions
What is Dr. Lawrence Blaszkowsky's medical specialty?
Dr. Lawrence Blaszkowsky practices Medical Oncology Physician in Boston, MA.
Where does Dr. Lawrence Blaszkowsky practice?
Dr. Lawrence Blaszkowsky practices at 55 Fruit St, Boston, MA 021142621. Office phone: 6177241700.
What is Dr. Lawrence Blaszkowsky's NPI?
Dr. Lawrence Blaszkowsky's National Provider Identifier (NPI) is 1225028137, issued by NPPES.
Does Dr. Lawrence Blaszkowsky accept Medicare assignment?
Yes. Dr. Lawrence Blaszkowsky accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Lawrence Blaszkowsky 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 99215); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233). Source: CMS Medicare Physician & Other Practitioners file.