Doctor profile · Federal record
Dr. Justin Granstein, MD
Neurology Physician (CMS: Neurology) · Neurocritical Care Physician · Boston, MA
- NPI 1699169599
- Accepts Medicare
- 11 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
110 Francis St Ste 3B
Boston, MA 022155501
(617) 632-7246 - Additional location
-
101 the City Dr S
Orange, CA 928683201
(714) 880-7812 - Additional location
-
200 S Manchester Ave Ste 210
Orange, CA 928683211
(714) 456-7495
Credentials & registration
- NPI registered
- March 2015 — 11 yrs on file
- Profile last updated
- July 20, 2023
- Year of graduation
- 2015 — 11 yrs since
- Specialty taxonomy
- 2084N0400X — NUCC code
- State license (1)
- Massachusetts #1015998
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1699169599. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
12
Distinct HCPCS
1
Medicare allowed
$4,187
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
36224 |
Insertion of tube into internal neck artery for diagnosis or treatment with review by radiologist | 12 | 11 | $349 |
In context: peer comparison
Among 134 peers in Boston Neurology Physician, average services per provider: 234. This provider delivers 0.1× the peer median.Open Payments
Industry payments received
All-time total
$2,365
Transactions
20
Manufacturers
5
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Medical Device Business Services, INC. | 10 | $1,746.24 | |
| DePuy Synthes Sales INC. | 2 | $274.63 | |
| Medtronic, INC. | 1 | $194.54 | |
| Imperative Care, INC | 6 | $131.32 | |
| Aesculap, INC. | 1 | $18.16 |
By nature of payment
Frequently asked questions
What is Dr. Justin Granstein's medical specialty?
Dr. Justin Granstein practices Neurology Physician in Boston, MA.
Where does Dr. Justin Granstein practice?
Dr. Justin Granstein practices at 110 Francis St Ste 3B, Boston, MA 022155501. Office phone: 6176327246.
What is Dr. Justin Granstein's NPI?
Dr. Justin Granstein's National Provider Identifier (NPI) is 1699169599, issued by NPPES.
Does Dr. Justin Granstein accept Medicare assignment?
Yes. Dr. Justin Granstein accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Justin Granstein commonly perform?
Top Medicare-reported procedures in 2023: Insertion of tube into internal neck artery for diagnosis or treatment with review by radiologist (HCPCS 36224). Source: CMS Medicare Physician & Other Practitioners file.