Dr. Christopher Ross Williams, MD
- Medicare patients, 2024
- 27
- Part D claims, 2024
- 202
- Hospital affiliations
- 4
- Industry payments
- $156
- Medical groups
- 2
- Practice address
- 500 W Broadway, Missoula, MT 59802
- Practice phone
- Call (406) 543-7271
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Christopher Ross Williams is a general surgeon in Missoula, Montana
Dr. Williams practices at Providence St. Patrick Hospital in Missoula, Montana, part of Providence Health & Services.
Dr. Williams' NPI, 1871821744, was assigned on December 3, 2009. Dr. Williams graduated from Mercer University School of Medicine in 2013. Dr. Williams holds Montana license MED-PHYS-LIC-104207.
- NPI
- 1871821744NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9335361245
- NPI enumeration date
- December 3, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (406) 543-7271
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Christopher Ross Williams practices at Providence St. Patrick Hospital in Missoula, Montana
Dr. Williams' primary practice is Providence St. Patrick Hospital, at 500 W Broadway, Missoula, MT 59802 in Missoula County. The practice phone is (406) 543-7271.
- Providence St. Patrick Hospital500 W Broadway, Missoula, MT 59802 · Missoula CountyPhone(406) 543-7271
Source: Dmand AI Affiliation Data
Dr. Christopher Ross Williams is affiliated with 4 sites of care and 2 medical groups
Dr. Williams' primary practice is Providence St. Patrick Hospital in Missoula, Montana, part of Providence Health & Services. Dr. Williams is also affiliated with Bitterroot Health - Daly Hospital. The medical group on file is Providence St. Patrick Hospital. Dmand AI also links Dr. Williams to 2 more hospitals and 1 medical group, 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. Christopher Ross Williams' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williams practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Providence St. Patrick Hospital | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Christopher Ross Williams is one of 111 general surgeons in Montana
Surgery is Dr. Williams' primary specialty in the NPI Registry, under taxonomy code 208600000X. Dmand AI has Dr. Williams' licenses on file in 2 states: Montana and California.
Specialties and state licenses
- Surgery, MontanaPrimary
- California license
General surgeons near Dr. Williams
Counts of general surgeons 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. Christopher Ross Williams treated 27 Medicare patients in 2024, average age 76
CMS counts 27 Medicare patients who saw Dr. Williams in 2024. The largest group is 65 to 74, with 13 patients. 75% of them have high blood pressure, and 59% have high cholesterol. Their average risk score is 1.93, 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. Williams' median patient age at 70, with 54% women.
Dr. Williams' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Williams' Medicare patients by sex, 2024
- Women1244%
- Men1556%
Chronic conditions among Dr. Williams' Medicare patients, 2024
- High blood pressure75%
- High cholesterol59%
- Arthritis56%
- Ischemic heart disease41%
Share of Medicare patients with each condition. A patient can have several.
Dr. Williams' 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
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Christopher Ross Williams wrote 202 Medicare Part D claims in 2024
In 2024, Dr. Williams wrote 202 Medicare Part D claims for 122 patients. 69% of them were for generic drugs. CMS names the drug for 150 of them, across 6 drugs with 11 or more claims each, at $7,147 in total drug cost. In 2023, CMS named 104 claims across 6 drugs.
Dr. Williams' Part D claims by kind of drug, 2024
- Generic140 claims69%
- Brand-name62 claims31%
Dr. Williams' 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 Dr. Williams' Part D claims, 2024
- Opioids11%22 of 202 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: 1042024: 15044%
Drugs named by CMS: 6 in 2024, 6 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
How Dr. Christopher Ross Williams takes part in Medicare
Dr. Williams accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Christopher Ross Williams received $156 in industry payments from 2017 to 2025
CMS Open Payments shows 4 general payments to Dr. Williams from 4 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Boston Scientific Corporation paid the most, $86.
General payments to Dr. Williams by program year, 2017 to 2025
Companies that paid Dr. Williams the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Christopher Ross Williams graduated from Mercer University School of Medicine
Dr. Williams graduated from Mercer University School of Medicine in 2013.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Christopher Ross 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 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)Doctors and Clinicians Utilization Data (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. Christopher Ross 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 Dr. Christopher Ross Williams' NPI number?
Dr. Christopher Ross Williams' NPI number is 1871821744. It was assigned on December 3, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Christopher Ross Williams?
Dr. Christopher Ross Williams is a general surgeon in Missoula, Montana. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Christopher Ross Williams practice?
Dr. Williams practices at 500 W Broadway, Missoula, MT 59802. Dr. Williams' primary practice is Providence St. Patrick Hospital in Missoula, Montana, part of Providence Health & Services. Dmand AI also links Dr. Williams to 2 hospitals and 1 medical group.
What is Dr. Christopher Ross Williams' office phone number?
The practice phone on file for Dr. Williams is (406) 543-7271.
What is Dr. Christopher Ross Williams' medical license number?
Dr. Williams holds Montana license MED-PHYS-LIC-104207, one of the licenses on file in 2 states.
Which states has Dr. Christopher Ross Williams been licensed in?
Dmand AI has state licenses on file for Dr. Williams in Montana and California.
Which hospitals is Dr. Christopher Ross Williams affiliated with?
Dr. Williams practices at Providence St. Patrick Hospital in Missoula, Montana. Dr. Williams is also affiliated with Bitterroot Health - Daly Hospital. Dmand AI links Dr. Williams to 2 more hospitals.
What medical group is Dr. Christopher Ross Williams part of?
Dr. Williams is linked to Providence St. Patrick Hospital. Dmand AI links Dr. Williams to 1 more medical group.
Does Dr. Christopher Ross Williams accept Medicare?
Yes. CMS lists Dr. Williams as accepting Medicare assignment.
How many Medicare patients does Dr. Christopher Ross Williams see?
CMS counts 27 Medicare patients who saw Dr. Williams in 2024, with an average age of 76.
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Where did Dr. Christopher Ross Williams go to medical school?
Dr. Williams graduated from Mercer University School of Medicine in 2013.
What drugs does Dr. Christopher Ross Williams prescribe most?
In 2024 Medicare Part D data, Dr. Williams' most prescribed drugs by claims were Omeprazole, Sutab and Ibuprofen.
Has Dr. Christopher Ross Williams received payments from drug or device companies?
CMS Open Payments shows $156 in general payments to Dr. Williams from 4 companies from 2017 to 2025. The largest total came from Boston Scientific Corporation.
How long has Dr. Christopher Ross Williams been practicing?
Dr. Williams graduated from medical school in 2013, 13 years ago.
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