Doctor profile · Federal record
Dr. Gary Horowitz, M.D.
Chemical Pathology Physician (CMS: Pathology) · Boston, MA
- NPI 1558308213
- Accepts Medicare
- 50 yrs in practice
- Male
- No sanctions
Practice & contact
- Primary practice
-
Beth Israel Hospital, Dept of Pathology
Boston, MA 02215
(617) 667-3648 - Mailing address
-
Brookline Avenue, Bi Deaconess MED. Ctr - Path
Boston, MA 02215
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- July 8, 2007
- Year of graduation
- 1976 — 50 yrs since
- Specialty taxonomy
- 207ZP0104X — NUCC code
- State license (1)
- Massachusetts #44883
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1558308213. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,256
Distinct HCPCS
4
Medicare allowed
$23,581
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
84165 |
Protein measurement, serum | 493 | 358 | $19 | |
86334 |
Immunologic analysis technique on serum (immunofixation) | 352 | 249 | $19 | |
84166 |
Protein measurement, body fluid | 239 | 171 | $19 | |
86335 |
Immunologic analysis technique on body fluid, other fluids with concentration | 172 | 107 | $19 |
In context: peer comparison
Among 1 peers in Boston Chemical Pathology Physician, average services per provider: 314. This provider delivers 4.0× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. Gary Horowitz's medical specialty?
Dr. Gary Horowitz practices Chemical Pathology Physician in Boston, MA.
Where does Dr. Gary Horowitz practice?
Dr. Gary Horowitz practices at Beth Israel Hospital, Boston, MA 02215. Office phone: 6176673648.
What is Dr. Gary Horowitz's NPI?
Dr. Gary Horowitz's National Provider Identifier (NPI) is 1558308213, issued by NPPES.
Does Dr. Gary Horowitz accept Medicare assignment?
Yes. Dr. Gary Horowitz accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gary Horowitz commonly perform?
Top Medicare-reported procedures in 2023: Protein measurement, serum (HCPCS 84165); Immunologic analysis technique on serum (immunofixation) (HCPCS 86334); Protein measurement, body fluid (HCPCS 84166). Source: CMS Medicare Physician & Other Practitioners file.