Colin Mcwilliams
NPI 1396464319 · Gerontology Nurse Practitioner · Duxbury, MA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Colin Mcwilliams is a Gerontology Nurse Practitioner provider in Duxbury, MA (NPI 1396464319).
Provider details
- NPI number
- 1396464319
- Entity type
- Individual
- Primary specialty
- Gerontology Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Male
- Sole proprietor
- Yes
- License
- AG07220180 (MA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
3 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
953 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 384 | $103 |
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 309 | $58 |
| Psychiatric Services Complicated By Communication Factor90785 | 235 | $12 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 25 | $151 |
Typical Medicare-allowed amounts for these services range $12–$151 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 39 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clonazepam | 207 | 21 |
| Trazodone Hcl | 150 | 28 |
| Lorazepam | 142 | 23 |
| Lamotrigine | 141 | 21 |
| Gabapentin | 105 | 17 |
| Dextroamphetamine/Amphetaminebrand: Dextroamphetamine-Amphetamine | 88 | — |
| Fluoxetine Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-08-23
- Last updated
- 2022-08-23
- Certified
- 2022-08-10
Frequently asked questions
- What is Colin Mcwilliams's NPI number?
- Colin Mcwilliams's National Provider Identifier (NPI) is 1396464319, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Colin Mcwilliams's specialty?
- Colin Mcwilliams is listed in the NPPES registry with a primary specialty of Gerontology Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Colin Mcwilliams located?
- Colin Mcwilliams's practice location on file with NPPES is 251 Tremont St, Duxbury, MA 02332-4828.
- What is Colin Mcwilliams's phone number?
- The practice phone number listed in the NPPES registry for Colin Mcwilliams is (781) 249-5960.
- Does Colin Mcwilliams accept Medicare?
- Colin Mcwilliams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Colin Mcwilliams's NPI active?
- Yes — Colin Mcwilliams's NPI (1396464319) is active in the NPPES registry as of the last update on 2022-08-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.