Mariann S. Williams, NP
- Part D claims, 2024
- 617
- Hospital affiliations
- 1
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 203 South Western, Tonasket, WA 98855
- Practice phone
- Call (509) 486-2151
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Mariann Williams' 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.
Mariann S. Williams is a nurse practitioner in Tonasket, Washington
Mariann Williams practices at North Valley Hospital in Tonasket, Washington, part of Okanogan County Public Hospital District No. 4.
Mariann Williams' NPI, 1922166776, was assigned on December 5, 2006. Mariann Williams holds Washington license AP30003589.
- NPI
- 1922166776NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5799697553
- NPI enumeration date
- December 5, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (509) 486-2151
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Mariann S. Williams practices at North Valley Hospital in Tonasket, Washington
Mariann Williams' primary practice is North Valley Hospital, at 203 South Western, Tonasket, WA 98855 in Okanogan County. The practice phone is (509) 486-2151.
- North Valley Hospital203 South Western, Tonasket, WA 98855 · Okanogan CountyPhone(509) 486-2151
Source: Dmand AI Affiliation Data
Mariann S. Williams is affiliated with 2 sites of care and 1 medical group
Mariann Williams' primary practice is North Valley Hospital in Tonasket, Washington, part of Okanogan County Public Hospital District No. 4. The medical group on file is North Valley Hospital. Dmand AI also links Mariann Williams to 1 more rural health clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Mariann S. Williams' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mariann Williams practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| North Valley Hospital | 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 Okanogan County Public Hospital District No. 4 and 6.2K+ hospitals, with verified contacts in the same login.
Mariann S. Williams is one of 1,633 nurse practitioners in Washington
Nurse practitioner is Mariann Williams' primary specialty in the NPI Registry, under taxonomy code 363L00000X. Mariann Williams is licensed in Washington.
Specialties and state licenses
- Nurse practitioner, WashingtonPrimary
Nurse practitioners near Mariann Williams
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
Mariann S. Williams' patients have a median age of 69
Across all payers, Dmand AI patient panel data puts Mariann Williams' median patient age at 69, with 63% women.
Mariann Williams' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women63%
- Men37%
Source: Dmand AI Patient Panel Data
Mariann S. Williams wrote 617 Medicare Part D claims in 2024
In 2024, Mariann Williams wrote 617 Medicare Part D claims for 143 patients. 87% of them were for generic drugs.
Mariann Williams' Part D claims by kind of drug, 2024
- Generic534 claims87%
- Brand-name and other83 claims13%
Drug classes CMS tracks in Mariann Williams' Part D claims, 2024
- Opioids7%42 of 617 claims
- Antibiotics4%23 of 617 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Mariann S. Williams takes part in Medicare
Mariann Williams 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)
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 Mariann S. Williams'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 Data |
| 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 Mariann S. Williams
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Mariann S. Williams' NPI number?
Mariann S. Williams' NPI number is 1922166776. It was assigned on December 5, 2006, and it is active in the NPI Registry.
What does Mariann S. Williams specialize in?
Mariann S. Williams is a nurse practitioner in Tonasket, Washington. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Mariann S. Williams practice?
Mariann Williams practices at 203 South Western, Tonasket, WA 98855. Mariann Williams' primary practice is North Valley Hospital in Tonasket, Washington, part of Okanogan County Public Hospital District No. 4. Dmand AI also links Mariann Williams to 1 rural health clinic.
What is Mariann S. Williams' office phone number?
The practice phone on file for Mariann Williams is (509) 486-2151.
What is Mariann S. Williams' medical license number?
Mariann Williams holds Washington license AP30003589.
Which hospitals is Mariann S. Williams affiliated with?
Mariann Williams practices at North Valley Hospital in Tonasket, Washington.
What medical group is Mariann S. Williams part of?
Mariann Williams is linked to North Valley Hospital.
Does Mariann S. Williams accept Medicare?
Yes. CMS lists Mariann Williams as accepting Medicare assignment.
How long has Mariann S. Williams been practicing?
Mariann Williams graduated from medical school in 1994, 32 years ago.
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