William Robert Barclay, CNP
- Medicare patients, 2024
- 109
- Part D claims, 2024
- 37
- Hospital affiliations
- 1
- Medical groups
- 2
- State license
- 1
- Practice address
- 300 1st Ave, Charlestown, MA 02129
- Practice phone
- Call (617) 952-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Spaulding Rehabilitation Hospital - Boston
Charlestown, Massachusetts
Find William Barclay's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
William Robert Barclay is a nurse practitioner in Charlestown, Massachusetts
William Barclay practices at Spaulding Rehabilitation Hospital - Boston in Charlestown, Massachusetts.
William Barclay's NPI, 1144810573, was assigned on January 20, 2021. William Barclay holds Massachusetts license RN2320814.
- NPI
- 1144810573NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0244648350
- NPI enumeration date
- January 20, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (617) 952-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
William Robert Barclay practices at Spaulding Rehabilitation Hospital - Boston in Charlestown, Massachusetts
William Barclay's primary practice is Spaulding Rehabilitation Hospital - Boston, at 300 1st Ave, Charlestown, MA 02129 in Suffolk County. The practice phone is (617) 952-5000.
- Spaulding Rehabilitation Hospital - Boston300 1st Ave, Charlestown, MA 02129 · Suffolk CountyPhone(617) 952-5000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
William Robert Barclay is affiliated with 2 sites of care and 2 medical groups
William Barclay's primary practice is Spaulding Rehabilitation Hospital - Boston in Charlestown, Massachusetts. William Barclay is also affiliated with Massachusetts General Hospital. The medical group on file is Massachusetts General Physicians Organization (MGPO). Dmand AI also links William Barclay to 1 more medical group, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at William Robert Barclay's practice
Dmand AI tracks the electronic health record (EHR) system at each site where William Barclay practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Spaulding Rehabilitation Hospital - Boston | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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William Robert Barclay is one of 2,511 nurse practitioners in Massachusetts
Nurse practitioner is William Barclay's primary specialty in the NPI Registry, under taxonomy code 363L00000X. William Barclay is licensed in Massachusetts.
Specialties and state licenses
- Nurse practitioner, MassachusettsPrimary
Nurse practitioners near William Barclay
Counts of nurse practitioners with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
William Robert Barclay treated 109 Medicare patients in 2024, average age 73
CMS counts 109 Medicare patients who saw William Barclay in 2024. The largest group is 65 to 74, with 34 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 44% are also on Medicaid. Their average risk score is 3.48, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts William Barclay's median patient age at 73, with 50% women.
William Barclay's Medicare patients by age, 2024
William Barclay's Medicare patients by sex, 2024
- Women5752%
- Men5248%
Chronic conditions among William Barclay's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease63%
- Mood disorders62%
- Anxiety61%
- Arthritis61%
- Depression59%
- Ischemic heart disease59%
Share of Medicare patients with each condition. A patient can have several.
William Barclay's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
William Robert Barclay wrote 37 Medicare Part D claims in 2024
In 2024, William Barclay wrote 37 Medicare Part D claims for 19 patients. 92% of them were for generic drugs.
William Barclay's Part D claims by kind of drug, 2024
- Generic34 claims92%
- Brand-name and other3 claims8%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How William Robert Barclay takes part in Medicare
William Barclay accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Sources for William Robert Barclay's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about William Robert Barclay
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is William Robert Barclay's NPI number?
William Robert Barclay's NPI number is 1144810573. It was assigned on January 20, 2021, and it is active in the NPI Registry.
What does William Robert Barclay specialize in?
William Robert Barclay is a nurse practitioner in Charlestown, Massachusetts. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does William Robert Barclay practice?
William Barclay practices at 300 1st Ave, Charlestown, MA 02129. William Barclay's primary practice is Spaulding Rehabilitation Hospital - Boston in Charlestown, Massachusetts. Dmand AI also links William Barclay to 1 medical group.
What is William Robert Barclay's office phone number?
The practice phone on file for William Barclay is (617) 952-5000.
What is William Robert Barclay's medical license number?
William Barclay holds Massachusetts license RN2320814.
Which hospitals is William Robert Barclay affiliated with?
William Barclay is affiliated with Massachusetts General Hospital.
What medical group is William Robert Barclay part of?
William Barclay is linked to Massachusetts General Physicians Organization (MGPO). Dmand AI links William Barclay to 1 more medical group.
Does William Robert Barclay accept Medicare?
Yes. CMS lists William Barclay as accepting Medicare assignment.
How many Medicare patients does William Robert Barclay see?
CMS counts 109 Medicare patients who saw William Barclay in 2024, with an average age of 73.
How long has William Robert Barclay been practicing?
William Barclay graduated from medical school in 2019, 7 years ago.
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