William Haynes
- Part D claims, 2024
- 62
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2017
- Practice address
- 400 W 7th St, Frederick, MD 21701
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Medical group
Find William Haynes' professional email, personal email and mobile number
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William Haynes is a psychiatric/mental health nurse practitioner in Frederick, Maryland
William Haynes practices with Cornerstone Montgomery, a medical group.
William Haynes' NPI, 1831610161, was assigned on June 27, 2017. William Haynes holds Maryland license R183173.
- NPI
- 1831610161NPI Registry (opens in a new tab)
- NPI enumeration date
- June 27, 2017
- NPI status
- Active
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
William Haynes' practice address is in Frederick, Maryland
William Haynes' practice address in the NPI Registry is 400 W 7th St, Frederick, MD 21701, in Frederick County.
- NPI Registry address400 W 7th St, Frederick, MD 21701 · Frederick County
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
William Haynes is affiliated with 1 medical group
William Haynes is part of Cornerstone Montgomery, a medical group in Bethesda, Maryland.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at William Haynes' practice
Dmand AI tracks the electronic health record (EHR) system at each site where William Haynes practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cornerstone Montgomery | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Cornerstone Montgomery and 6.2K+ hospitals, with verified contacts in the same login.
William Haynes is one of 1,589 psychiatric/mental health nurse practitioners in Maryland
Psychiatric/mental health is William Haynes' primary specialty in the NPI Registry, under taxonomy code 363LP0808X. William Haynes is licensed in Maryland.
Specialties and state licenses
- Psychiatric/mental health nurse practitioner, MarylandPrimary
Psychiatric/mental health nurse practitioners near William Haynes
Counts of psychiatric/mental health 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 Haynes' patients have a median age of 58
Across all payers, Dmand AI patient panel data puts William Haynes' median patient age at 58, with 33% women.
William Haynes' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women33%
- Men67%
Source: Dmand AI Patient Panel Data
William Haynes wrote 62 Medicare Part D claims in 2024
In 2024, William Haynes wrote 62 Medicare Part D claims. 98% of them were for generic drugs.
William Haynes' Part D claims by kind of drug, 2024
- Generic61 claims98%
- Brand-name and other1 claims2%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Sources for William Haynes'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 | Dmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (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 Haynes
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 Haynes' NPI number?
William Haynes' NPI number is 1831610161. It was assigned on June 27, 2017, and it is active in the NPI Registry.
What does William Haynes specialize in?
William Haynes is a psychiatric/mental health nurse practitioner in Frederick, Maryland. The primary specialty in the NPI Registry is Psychiatric/Mental Health Nurse Practitioner (taxonomy code 363LP0808X).
Where does William Haynes practice?
William Haynes practices at 400 W 7th St, Frederick, MD 21701. William Haynes' primary practice is Cornerstone Montgomery, a medical group.
What is William Haynes' medical license number?
William Haynes holds Maryland license R183173.
What medical group is William Haynes part of?
William Haynes is part of Cornerstone Montgomery in Bethesda, Maryland.
How long has William Haynes been practicing?
William Haynes' NPI was assigned in 2017.
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