Doctor profile · Federal record
Dr. Ziv Williams, MD
Neurological Surgery Physician (CMS: Neurosurgery) · Boston, MA
- NPI 1093705782
- Accepts Medicare
- 27 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
55 Fruit St, Massachusetts General Hospital, Wac 745K
Boston, MA 021142621
(617) 643-4102
fax (617) 643-4111 - 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
- August 14, 2009
- Year of graduation
- 1999 — 27 yrs since
- Specialty taxonomy
- 207T00000X — NUCC code
- State license (1)
- Massachusetts #216555
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1093705782. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
76
Distinct HCPCS
2
Medicare allowed
$8,397
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 65 | 50 | $98 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 11 | 11 | $182 |
In context: peer comparison
Among 38 peers in Boston Neurological Surgery Physician, average services per provider: 39. This provider delivers 1.9× the peer median.Open Payments
Industry payments received
All-time total
$302
Transactions
2
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Globus Medical, INC. | 2 | $302.00 |
By nature of payment
Hospital affiliations
Frequently asked questions
What is Dr. Ziv Williams's medical specialty?
Dr. Ziv Williams practices Neurological Surgery Physician in Boston, MA.
Where does Dr. Ziv Williams practice?
Dr. Ziv Williams practices at 55 Fruit St, Boston, MA 021142621. Office phone: 6176434102.
What is Dr. Ziv Williams's NPI?
Dr. Ziv Williams's National Provider Identifier (NPI) is 1093705782, issued by NPPES.
Does Dr. Ziv Williams accept Medicare assignment?
Yes. Dr. Ziv Williams accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ziv Williams commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.