John William Dettwyler, PhD
- Medicare patients, 2024
- 210
- Hospital affiliations
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 100 Wellness Way, Milford, DE 19963
- Practice phone
- Call (302) 422-3311
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find John Dettwyler'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.
John William Dettwyler is a psychologist in Milford, Delaware
John Dettwyler practices at Bayhealth Hospital, Sussex Campus in Milford, Delaware, part of Bayhealth Medical Center.
John Dettwyler's NPI, 1982776324, was assigned on November 14, 2006. John Dettwyler graduated from Temple University School of Medicine in 1987. John Dettwyler holds Delaware license B10000210.
- NPI
- 1982776324NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3072671874
- NPI enumeration date
- November 14, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (302) 422-3311
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
John William Dettwyler practices at Bayhealth Hospital, Sussex Campus in Milford, Delaware
John Dettwyler's primary practice is Bayhealth Hospital, Sussex Campus, at 100 Wellness Way, Milford, DE 19963 in Sussex County. The practice phone is (302) 422-3311.
- Bayhealth Hospital, Sussex Campus100 Wellness Way, Milford, DE 19963 · Sussex CountyPhone(302) 422-3311
Source: Dmand AI Affiliation Data
John William Dettwyler is affiliated with 1 site of care
John Dettwyler's primary practice is Bayhealth Hospital, Sussex Campus in Milford, Delaware, part of Bayhealth Medical Center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at John William Dettwyler's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John Dettwyler practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Bayhealth Hospital, Sussex Campus | 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 Bayhealth Medical Center and 6.2K+ hospitals, with verified contacts in the same login.
John William Dettwyler is one of 53 psychologists in Delaware
Psychologist is John Dettwyler's primary specialty in the NPI Registry, under taxonomy code 103T00000X. John Dettwyler is licensed in Delaware.
Specialties and state licenses
- Psychologist, DelawarePrimary
Psychologists near John Dettwyler
Counts of psychologists 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
John William Dettwyler treated 210 Medicare patients in 2024, average age 73
CMS counts 210 Medicare patients who saw John Dettwyler in 2024. The largest group is 65 to 74, with 104 patients. 75% of them have arthritis, and 75% have high blood pressure. 9% are also on Medicaid. Their average risk score is 1.25, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts John Dettwyler's median patient age at 70, with 50% women.
John Dettwyler's Medicare patients by age, 2024
John Dettwyler's Medicare patients by sex, 2024
- Women12158%
- Men8942%
Chronic conditions among John Dettwyler's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Mood disorders48%
- Diabetes46%
- Anxiety39%
- Depression34%
- Ischemic heart disease31%
Share of Medicare patients with each condition. A patient can have several.
John Dettwyler's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How John William Dettwyler takes part in Medicare
John Dettwyler 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)
John William Dettwyler graduated from Temple University School of Medicine
John Dettwyler graduated from Temple University School of Medicine in 1987.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for John William Dettwyler'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 patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - 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) |
| 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 John William Dettwyler
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is John William Dettwyler's NPI number?
John William Dettwyler's NPI number is 1982776324. It was assigned on November 14, 2006, and it is active in the NPI Registry.
What does John William Dettwyler specialize in?
John William Dettwyler is a psychologist in Milford, Delaware. The primary specialty in the NPI Registry is Psychologist (taxonomy code 103T00000X).
Where does John William Dettwyler practice?
John Dettwyler practices at 100 Wellness Way, Milford, DE 19963. John Dettwyler's primary practice is Bayhealth Hospital, Sussex Campus in Milford, Delaware, part of Bayhealth Medical Center.
What is John William Dettwyler's office phone number?
The practice phone on file for John Dettwyler is (302) 422-3311.
What is John William Dettwyler's medical license number?
John Dettwyler holds Delaware license B10000210.
Which hospitals is John William Dettwyler affiliated with?
John Dettwyler practices at Bayhealth Hospital, Sussex Campus in Milford, Delaware.
Does John William Dettwyler accept Medicare?
Yes. CMS lists John Dettwyler as accepting Medicare assignment.
How many Medicare patients does John William Dettwyler see?
CMS counts 210 Medicare patients who saw John Dettwyler in 2024, with an average age of 73.
Where did John William Dettwyler go to medical school?
John Dettwyler graduated from Temple University School of Medicine in 1987.
How long has John William Dettwyler been practicing?
John Dettwyler graduated from medical school in 1987, 39 years ago.
Selling to psychologist practices?
See psychologists in Delaware by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card