Doctor profile · Federal record
Dr. Dawn Williamson, PCNS
Psychiatric/Mental Health Nurse Practitioner (CMS: Certified Clinical Nurse Specialist (CNS)) · Adult Psychiatric/Mental Health Clinical Nurse Specialist · Boston, MA
- NPI 1912987074
- Accepts Medicare
- 21 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
55 Fruit St
Boston, MA 021142621
(617) 643-2307 - Additional location
-
736 Cambridge St
Brighton, MA 021352907
(617) 789-2102
Credentials & registration
- NPI registered
- January 2006 — 20 yrs on file
- Profile last updated
- October 15, 2025
- Year of graduation
- 2005 — 21 yrs since
- Specialty taxonomy
- 363LP0808X — NUCC code
- State license (1)
- Massachusetts #RN217173
- Medicaid
- MA #110125732A
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1912987074. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
172
Distinct HCPCS
2
Medicare allowed
$10,313
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 98 | 41 | $72 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 74 | 29 | $45 |
In context: peer comparison
Among 29 peers in Boston Psychiatric/Mental Health Nurse Practitioner, average services per provider: 80. This provider delivers 2.2× the peer median.Frequently asked questions
What is Dr. Dawn Williamson's medical specialty?
Dr. Dawn Williamson practices Psychiatric/Mental Health Nurse Practitioner in Boston, MA.
Where does Dr. Dawn Williamson practice?
Dr. Dawn Williamson practices at 55 Fruit St, Boston, MA 021142621. Office phone: 6176432307.
What is Dr. Dawn Williamson's NPI?
Dr. Dawn Williamson's National Provider Identifier (NPI) is 1912987074, issued by NPPES.
Does Dr. Dawn Williamson accept Medicare assignment?
Yes. Dr. Dawn Williamson accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Dawn Williamson commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Subsequent hospital care with straightforward or low level of medical decision making (HCPCS 99231). Source: CMS Medicare Physician & Other Practitioners file.