Dr. Ryan Alan Williamson, MD
- Medicare services, 2024
- 275
- Medicare patients, 2024
- 187
- Part D claims, 2017
- 29
- Hospital affiliations
- 5
- Industry payments
- $29,848
- Practice address
- 2800 10th Ave N, Billings, MT 59101
- Practice phone
- Call (406) 657-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Williamson's professional email, personal email and mobile number
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Dr. Ryan Alan Williamson is a neurologist in Billings, Montana
Dr. Williamson practices at Billings Clinic Hospital in Billings, Montana, part of Billings Clinic.
Dr. Williamson's NPI, 1003234204, was assigned on April 3, 2014. Dr. Williamson graduated from Florida State University College of Medicine in 2014. Dr. Williamson holds North Carolina license 2018-02818.
- NPI
- 1003234204NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9133458581
- NPI enumeration date
- April 3, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (406) 657-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ryan Alan Williamson practices at Billings Clinic Hospital in Billings, Montana
Dr. Williamson's primary practice is Billings Clinic Hospital, at 2800 10th Ave N, Billings, MT 59101 in Yellowstone County. The practice phone is (406) 657-4000.
- Billings Clinic Hospital2800 10th Ave N, Billings, MT 59101 · Yellowstone CountyPhone(406) 657-4000
Source: Dmand AI Affiliation Data
Dr. Ryan Alan Williamson is affiliated with 8 sites of care and 13 medical groups
Dr. Williamson's primary practice is Billings Clinic Hospital in Billings, Montana, part of Billings Clinic. Dr. Williamson is also affiliated with Northside Hospital Atlanta. The medical group on file is Novant Health Indian Land Primary Care. Dmand AI also links Dr. Williamson to 3 more hospitals, 12 medical groups and 3 group practices and clinics, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ryan Alan Williamson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williamson practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Billings Clinic Hospital | Available with a free account |
| +7 more sites and 12 medical groups | 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 Billings Clinic and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Ryan Alan Williamson is one of 57 neurologists in Montana
Neurology is Dr. Williamson's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dmand AI has Dr. Williamson's licenses on file in 5 states: North Carolina, Georgia, Oregon, Virginia and Washington.
Specialties and state licenses
- Neurology, North CarolinaPrimary
- Georgia license
- Oregon license
- Virginia license
- Washington license
Neurologists near Dr. Williamson
Counts of neurologists 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
Dr. Ryan Alan Williamson billed Medicare for 275 services in 2024
CMS data shows 275 Medicare services from Dr. Williamson across 7 procedure codes in 2024, for 187 Medicare patients. Medicare paid $25,993 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Williamson's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1042024: 251141%
- Tests and treatments
- 2023: 02024: 24
Dr. Williamson compared with the Montana median for neurologists, 2024
- Dr. Williamson
- Montana median
- Medicare services
- 275vs 34921% below
- Medicare patients
- 187vs 187Close to median
- Part D claims
- 29vs 46494% below
Medians across 56 neurologists in Montana with Dmand AI profiles that report each measure.
Dr. Williamson'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Williamson and other neurologists in Montana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ryan Alan Williamson treated 187 Medicare patients in 2024, average age 76
CMS counts 187 Medicare patients who saw Dr. Williamson in 2024. The largest group is 75 to 84, with 83 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 20% are also on Medicaid. Their average risk score is 2.19, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Williamson's median patient age at 72, with 64% women.
Dr. Williamson's Medicare patients by age, 2024
Dr. Williamson's Medicare patients by sex, 2024
- Women9752%
- Men9048%
Chronic conditions among Dr. Williamson's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Stroke or TIA75%
- Arthritis61%
- Anxiety51%
- Ischemic heart disease47%
- Diabetes46%
- Mood disorders46%
Share of Medicare patients with each condition. A patient can have several.
Dr. 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 72
Patient panel by sex, all payers
- Women64%
- Men36%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ryan Alan Williamson wrote 29 Medicare Part D claims in 2017
In 2017, Dr. Williamson wrote 29 Medicare Part D claims. Every claim was for a generic drug. They cover 2 drugs, with $334 in total drug cost.
Dr. Williamson's most prescribed drugs by claims, 2017
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Dr. Ryan Alan Williamson takes part in Medicare
Dr. Williamson 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)
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Dr. Ryan Alan Williamson received $29,848 in industry payments from 2017 to 2023
CMS Open Payments shows 33 general payments to Dr. Williamson from 5 drug and device companies from 2017 to 2023. Speaker and faculty fees make up the largest share, 87% of the total. Abbvie Inc. paid the most, $29,427.
General payments to Dr. Williamson by program year, 2017 to 2023
General payments to Dr. Williamson by kind, 2017 to 2023
- Speaker and faculty fees$25,98887%
- Travel and lodging$2,95710%
- Food and beverage$7573%
- Education$1470%
Companies that paid Dr. Williamson the most, 2017 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ryan Alan Williamson graduated from Florida State University College of Medicine
Dr. Williamson graduated from Florida State University College of Medicine in 2014.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ryan Alan 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 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) |
| 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 Dr. Ryan Alan 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 Dr. Ryan Alan Williamson's NPI number?
Dr. Ryan Alan Williamson's NPI number is 1003234204. It was assigned on April 3, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Ryan Alan Williamson?
Dr. Ryan Alan Williamson is a neurologist in Billings, Montana. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).
Where does Dr. Ryan Alan Williamson practice?
Dr. Williamson practices at 2800 10th Ave N, Billings, MT 59101. Dr. Williamson's primary practice is Billings Clinic Hospital in Billings, Montana, part of Billings Clinic. Dmand AI also links Dr. Williamson to 3 hospitals, 12 medical groups and 3 group practices and clinics.
What is Dr. Ryan Alan Williamson's office phone number?
The practice phone on file for Dr. Williamson is (406) 657-4000.
What is Dr. Ryan Alan Williamson's medical license number?
Dr. Williamson holds North Carolina license 2018-02818, one of the licenses on file in 5 states.
Which states has Dr. Ryan Alan Williamson been licensed in?
Dmand AI has state licenses on file for Dr. Williamson in North Carolina, Georgia, Oregon, Virginia and Washington.
Which hospitals is Dr. Ryan Alan Williamson affiliated with?
Dr. Williamson practices at Billings Clinic Hospital in Billings, Montana. Dr. Williamson is also affiliated with Northside Hospital Atlanta. Dmand AI links Dr. Williamson to 3 more hospitals.
What medical group is Dr. Ryan Alan Williamson part of?
Dr. Williamson is linked to Novant Health Indian Land Primary Care. Dmand AI links Dr. Williamson to 12 more medical groups.
Does Dr. Ryan Alan Williamson accept Medicare?
Yes. CMS data shows Dr. Williamson billed Medicare for 275 services in 2024, and Dr. Williamson accepts Medicare assignment.
How many Medicare patients does Dr. Ryan Alan Williamson see?
CMS counts 187 Medicare patients who saw Dr. Williamson in 2024, with an average age of 76.
Show 5 more questionsShow fewer questions
What services does Dr. Ryan Alan Williamson bill to Medicare?
In 2024, Dr. Williamson's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99222) and critical care (99291).
Where did Dr. Ryan Alan Williamson go to medical school?
Dr. Williamson graduated from Florida State University College of Medicine in 2014.
What drugs does Dr. Ryan Alan Williamson prescribe most?
In 2017 Medicare Part D data, Dr. Williamson's most prescribed drugs by claims were Donepezil HCl and Levetiracetam.
Has Dr. Ryan Alan Williamson received payments from drug or device companies?
CMS Open Payments shows $29,848 in general payments to Dr. Williamson from 5 companies from 2017 to 2023. The largest total came from Abbvie Inc.
How long has Dr. Ryan Alan Williamson been practicing?
Dr. Williamson graduated from medical school in 2014, 12 years ago.
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