Daniel J. Williamson
- Medicare patients, 2024
- 20
- Part D claims, 2024
- 442
- Hospital affiliations
- 1
- Industry payments
- $3,921
- Medical group
- 1
- Practice address
- 830 Washington Street, Watertown, NY 13601
- Practice phone
- Call (315) 785-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Daniel Williamson'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.
Daniel J. Williamson is a child and adolescent psychiatrist in Watertown, New York
Daniel Williamson practices at Samaritan Medical Center in Watertown, New York, part of MultiCare Health System.
Daniel Williamson's NPI, 1396192407, was assigned on May 18, 2016. Daniel Williamson graduated from Saba University School of Medicine in 2016. Daniel Williamson holds New York license 307727.
- NPI
- 1396192407NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3678810066
- NPI enumeration date
- May 18, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (315) 785-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Daniel J. Williamson practices at Samaritan Medical Center in Watertown, New York
Daniel Williamson's primary practice is Samaritan Medical Center, at 830 Washington Street, Watertown, NY 13601 in Jefferson County. The practice phone is (315) 785-4000.
- Samaritan Medical Center830 Washington Street, Watertown, NY 13601 · Jefferson CountyPhone(315) 785-4000
Source: Dmand AI Affiliation Data
Daniel J. Williamson is affiliated with 2 sites of care and 1 medical group
Daniel Williamson's primary practice is Samaritan Medical Center in Watertown, New York, part of MultiCare Health System. The medical group on file is Samaritan Medical Center. Dmand AI also links Daniel Williamson to 1 more group practice or clinic, named with a free account. Daniel Williamson's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Daniel J. Williamson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Daniel Williamson practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Samaritan Medical Center | Available with a free account |
| +1 more affiliated site | 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 MultiCare Health System and 6.2K+ hospitals, with verified contacts in the same login.
Daniel J. Williamson is one of 512 childs and adolescent psychiatrists in New York
Child and adolescent psychiatry is Daniel Williamson's primary specialty in the NPI Registry, under taxonomy code 2084P0804X. Daniel Williamson is licensed in New York.
Specialties and state licenses
- Child and adolescent psychiatry, New YorkPrimary
Childs and adolescent psychiatrists near Daniel Williamson
Counts of childs and adolescent psychiatrists 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
Daniel J. Williamson treated 20 Medicare patients in 2024, average age 63
CMS counts 20 Medicare patients who saw Daniel Williamson in 2024. 75% of them have anxiety, and 75% have mood disorders. Their average risk score is 1.65, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Daniel Williamson's median patient age at 22, with 56% women.
Chronic conditions among Daniel Williamson's Medicare patients, 2024
- Anxiety75%
- Mood disorders75%
- Depression70%
- High blood pressure65%
- High cholesterol60%
- Personality disorders55%
Share of Medicare patients with each condition. A patient can have several.
Daniel Williamson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 22
Patient panel by sex, all payers
- Women56%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Daniel J. Williamson wrote 442 Medicare Part D claims in 2024
In 2024, Daniel Williamson wrote 442 Medicare Part D claims for 26 patients. 88% of them were for generic drugs. CMS names the drug for 305 of them, across 17 drugs with 11 or more claims each, at $24,634 in total drug cost. In 2023, CMS named 308 claims across 16 drugs.
Daniel Williamson's Part D claims by kind of drug, 2024
- Generic390 claims88%
- Brand-name52 claims12%
Daniel Williamson'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 Daniel Williamson's Part D claims, 2024
- Antipsychotics, patients 65 and over4%17 of 442 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3082024: 3051%
Drugs named by CMS: 17 in 2024, 16 in 2023.
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
Daniel J. Williamson offers telehealth to Medicare patients
Daniel Williamson accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Daniel Williamson as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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.
Daniel J. Williamson received $3,921 in industry payments from 2021 to 2025
CMS Open Payments shows 194 general payments to Daniel Williamson from 18 drug and device companies from 2021 to 2025. Food and beverage make up the largest share, 99% of the total. ITI, Inc. paid the most, $1,132.
General payments to Daniel Williamson by program year, 2021 to 2025
General payments to Daniel Williamson by kind, 2021 to 2025
- Food and beverage$3,87499%
- Education$471%
Companies that paid Daniel Williamson the most, 2021 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Daniel J. Williamson graduated from Saba University School of Medicine
Daniel Williamson graduated from Saba University School of Medicine in 2016.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Daniel J. Williamson'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) |
| 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (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 Daniel J. Williamson
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Daniel J. Williamson's NPI number?
Daniel J. Williamson's NPI number is 1396192407. It was assigned on May 18, 2016, and it is active in the NPI Registry.
What does Daniel J. Williamson specialize in?
Daniel J. Williamson is a child and adolescent psychiatrist in Watertown, New York. The primary specialty in the NPI Registry is Child & Adolescent Psychiatry Physician (taxonomy code 2084P0804X).
Where does Daniel J. Williamson practice?
Daniel Williamson practices at 830 Washington Street, Watertown, NY 13601. Daniel Williamson's primary practice is Samaritan Medical Center in Watertown, New York, part of MultiCare Health System. Dmand AI also links Daniel Williamson to 1 group practice or clinic.
What is Daniel J. Williamson's office phone number?
The practice phone on file for Daniel Williamson is (315) 785-4000.
What is Daniel J. Williamson's medical license number?
Daniel Williamson holds New York license 307727.
Which hospitals is Daniel J. Williamson affiliated with?
Daniel Williamson practices at Samaritan Medical Center in Watertown, New York.
What medical group is Daniel J. Williamson part of?
Daniel Williamson is linked to Samaritan Medical Center.
Does Daniel J. Williamson accept Medicare?
Yes. CMS lists Daniel Williamson as accepting Medicare assignment.
Does Daniel J. Williamson offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Daniel Williamson as offering telehealth services.
How many Medicare patients does Daniel J. Williamson see?
CMS counts 20 Medicare patients who saw Daniel Williamson in 2024, with an average age of 63.
Show 4 more questionsShow fewer questions
Where did Daniel J. Williamson go to medical school?
Daniel Williamson graduated from Saba University School of Medicine in 2016.
What drugs does Daniel J. Williamson prescribe most?
In 2024 Medicare Part D data, Daniel Williamson's most prescribed drugs by claims were Buspirone HCl, Clonazepam and Fluoxetine HCl.
Has Daniel J. Williamson received payments from drug or device companies?
CMS Open Payments shows $3,921 in general payments to Daniel Williamson from 18 companies from 2021 to 2025. The largest total came from ITI, Inc.
How long has Daniel J. Williamson been practicing?
Daniel Williamson graduated from medical school in 2016, 10 years ago.
Selling to child and adolescent psychiatry practices?
See childs and adolescent psychiatrists in New York 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