Doctor profile · Federal record
Dr. Michael O'Brien, MD
Anatomic Pathology Physician (CMS: Pathology) · Boston, MA
- NPI 1700858438
- Accepts Medicare
- MIPS 0.0 / 100 · 2023
- 55 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
670 Albany St, Floor 3, Room 310
Boston, MA 021182646
(617) 414-5314
fax (617) 414-5315 - Mailing address
-
1085 Main St
South Weymouth, MA 021901547
Credentials & registration
- NPI registered
- February 2006 — 20 yrs on file
- Profile last updated
- October 11, 2019
- Year of graduation
- 1971 — 55 yrs since
- Specialty taxonomy
- 207ZP0101X — NUCC code
- State license (1)
- Massachusetts #40684
- Medicaid (2)
- NH #30204395 · MA #6169813
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1700858438. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,986
Distinct HCPCS
3
Medicare allowed
$249,768
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
88305 |
Pathology examination of tissue using a microscope, intermediate complexity | 2,713 | 1,097 | $81 | |
88342 |
Special stained specimen slides to examine tissue, initial procedure | 235 | 216 | $115 | |
88341 |
Special stained specimen slides to examine tissue, each additional procedure | 38 | 36 | $100 |
In context: peer comparison
Among 57 peers in Boston Anatomic Pathology Physician, average services per provider: 159. This provider delivers 19× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. Michael O'Brien's medical specialty?
Dr. Michael O'Brien practices Anatomic Pathology Physician in Boston, MA.
Where does Dr. Michael O'Brien practice?
Dr. Michael O'Brien practices at 670 Albany St, Boston, MA 021182646. Office phone: 6174145314.
What is Dr. Michael O'Brien's NPI?
Dr. Michael O'Brien's National Provider Identifier (NPI) is 1700858438, issued by NPPES.
Does Dr. Michael O'Brien accept Medicare assignment?
Yes. Dr. Michael O'Brien accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Michael O'Brien commonly perform?
Top Medicare-reported procedures in 2023: Pathology examination of tissue using a microscope, intermediate complexity (HCPCS 88305); Special stained specimen slides to examine tissue, initial procedure (HCPCS 88342); Special stained specimen slides to examine tissue, each additional procedure (HCPCS 88341). Source: CMS Medicare Physician & Other Practitioners file.