William Keith Shafto, PA-C
- Medicare services, 2024
- 179
- Medicare patients, 2024
- 175
- Part D claims, 2024
- 113
- Hospital affiliations
- 1
- Medical groups
- 2
- Practice address
- 24 Hospital Ave, Danbury, CT 06810
- Practice phone
- Call (203) 739-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find William Shafto's professional email, personal email and mobile number
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William Keith Shafto is a physician assistant in Danbury, Connecticut
William Shafto practices at Northwell Danbury Hospital in Danbury, Connecticut, part of Northwell Health.
William Shafto's NPI, 1972528131, was assigned on July 12, 2006. William Shafto holds Connecticut license 001370.
- NPI
- 1972528131NPI Registry (opens in a new tab)
- NPI enumeration date
- July 12, 2006
- NPI status
- Active
- Practice phone
- (203) 739-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
William Keith Shafto practices at Northwell Danbury Hospital in Danbury, Connecticut
William Shafto's primary practice is Northwell Danbury Hospital, at 24 Hospital Ave, Danbury, CT 06810 in Fairfield County. The practice phone is (203) 739-7000.
- Northwell Danbury Hospital24 Hospital Ave, Danbury, CT 06810 · Fairfield CountyPhone(203) 739-7000
Source: Dmand AI Affiliation Data
William Keith Shafto is affiliated with 1 site of care and 2 medical groups
William Shafto's primary practice is Northwell Danbury Hospital in Danbury, Connecticut, part of Northwell Health. The medical group on file is Danbury Hospital. Dmand AI also links William Shafto to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at William Keith Shafto's practice
Dmand AI tracks the electronic health record (EHR) system at each site where William Shafto practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwell Danbury Hospital | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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William Keith Shafto is one of 1,682 physician assistants in Connecticut
Physician assistant is William Shafto's primary specialty in the NPI Registry, under taxonomy code 363A00000X. William Shafto is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA). William Shafto is licensed in Connecticut.
Specialties and state licenses
- Physician assistant, ConnecticutPrimary
Physician assistants near William Shafto
Counts of physician assistants 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 Keith Shafto billed Medicare for 179 services in 2024
CMS data shows 179 Medicare services from William Shafto across 3 procedure codes in 2024, for 175 Medicare patients. Medicare paid $16,036 for them. Every service was in a facility, such as a hospital, rather than an office.
William Shafto compared with the Connecticut median for physician assistants, 2024
- William Shafto
- Connecticut median
- Medicare services
- 179vs 28637% below
- Medicare patients
- 175vs 10075% above
- Part D claims
- 31vs 29389% below
Medians across 1,046 physician assistants in Connecticut with Dmand AI profiles that report each measure.
William Shafto's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
William Keith Shafto treated 175 Medicare patients in 2024, average age 77
CMS counts 175 Medicare patients who saw William Shafto in 2024. The largest group is 75 to 84, with 58 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 31% are also on Medicaid. Their average risk score is 1.79, 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 Shafto's median patient age at 61, with 50% women.
William Shafto's Medicare patients by age, 2024
William Shafto's Medicare patients by sex, 2024
- Women10661%
- Men6939%
Chronic conditions among William Shafto's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Anxiety41%
- Mood disorders41%
- Chronic kidney disease35%
- Depression35%
- Diabetes35%
Share of Medicare patients with each condition. A patient can have several.
William Shafto's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women50%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
William Keith Shafto wrote 113 Medicare Part D claims in 2024
In 2024, William Shafto wrote 113 Medicare Part D claims for 86 patients. 96% of them were for generic drugs. CMS names the drug for 31 of them, across 2 drugs with 11 or more claims each, at $129 in total drug cost.
William Shafto's Part D claims by kind of drug, 2024
- Generic109 claims96%
- Brand-name and other4 claims4%
William Shafto's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in William Shafto's Part D claims, 2024
- Opioids35%39 of 113 claims
- Antibiotics29%33 of 113 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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William Keith Shafto is board certified in certified physician assistant
- Board certified in certified physician assistant
Source: Dmand AI Professional Profile Data
Sources for William Keith Shafto'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| 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 and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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 Keith Shafto
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 Keith Shafto's NPI number?
William Keith Shafto's NPI number is 1972528131. It was assigned on July 12, 2006, and it is active in the NPI Registry.
What does William Keith Shafto specialize in?
William Keith Shafto is a physician assistant in Danbury, Connecticut. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does William Keith Shafto practice?
William Shafto practices at 24 Hospital Ave, Danbury, CT 06810. William Shafto's primary practice is Northwell Danbury Hospital in Danbury, Connecticut, part of Northwell Health. Dmand AI also links William Shafto to 1 medical group.
What is William Keith Shafto's office phone number?
The practice phone on file for William Shafto is (203) 739-7000.
What is William Keith Shafto's medical license number?
William Shafto holds Connecticut license 001370.
Which hospitals is William Keith Shafto affiliated with?
William Shafto practices at Northwell Danbury Hospital in Danbury, Connecticut.
What medical group is William Keith Shafto part of?
William Shafto is linked to Danbury Hospital. Dmand AI links William Shafto to 1 more medical group.
Does William Keith Shafto accept Medicare?
Yes. CMS data shows William Shafto billed Medicare for 179 services in 2024.
How many Medicare patients does William Keith Shafto see?
CMS counts 175 Medicare patients who saw William Shafto in 2024, with an average age of 77.
Is William Keith Shafto board certified?
Yes. William Shafto is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA).
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What services does William Keith Shafto bill to Medicare?
In 2024, William Shafto's most billed Medicare services were emergency department visit (99284), emergency department visit (99285) and emergency department visit (99283).
What drugs does William Keith Shafto prescribe most?
In 2024 Medicare Part D data, William Shafto's most prescribed drugs by claims were Oxycodone-Acetaminophen and Tramadol HCl.
How long has William Keith Shafto been practicing?
William Shafto's NPI was assigned in 2006.
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