Provider Profile
William R. Barclay, CNP
Unclaimed ProfileAbout William Barclay
William R. Barclay, CNP is a nurse practitioner practicing in Boston, MA. Medicare claims data shows William provided 229 services to 129 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (617) 726-2000
- Email not available
Practice Locations
55 FRUIT ST
Boston, MA 02114
Procedures Most Often Billed to Medicare
229 services · 129 patients · 2 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
192 |
| Hospital discharge day management, more than 30 minutes | Office visit | 99239 |
37 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other nurse practitioners at this location 4
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 7
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 20 related providers in 3 groups
Other nurse practitioners in Boston 4
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2019 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What does William R. Barclay specialize in?
William R. Barclay is a nurse practitioner in Boston, MA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is William R. Barclay located?
William R. Barclay is listed at 55 Fruit St, Boston, MA 02114. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is William R. Barclay's phone number?
The number on file is (617) 726-2000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for William R. Barclay?
William R. Barclay's National Provider Identifier is 1144810573. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did William R. Barclay train?
William R. Barclay attended Other, graduating in 2019. This comes from the CMS National Downloadable File.
CMS public data
How much experience does William R. Barclay have?
William R. Barclay has 7 years experience. Calculated from a graduation year of 2019, reported in the CMS National Downloadable File.
CMS public data
What does William R. Barclay do most often?
According to Medicare billing data, William R. Barclay the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is William R. Barclay's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by William R. Barclay. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.