Dr. Gary J. Willstein, MD
- Medicare services, 2024
- 12,300
- Medicare patients, 2024
- 408
- Part D claims, 2024
- 374
- MIPS score, 2024
- 29
- Industry payments
- $4,975
- Practice address
- 2360 Mullan Rd Ste B, Missoula, MT 59808
- Practice phone
- Call (406) 542-9695
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Missoula Bone & Joint Surgery Center
Surgery Center - Medicare-Certified · Missoula, Montana
Find Dr. Willstein'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.
Dr. Gary J. Willstein is an orthopedic surgeon in Missoula, Montana
Dr. Willstein practices at Missoula Bone & Joint Surgery Center in Missoula, Montana.
Dr. Willstein's NPI, 1932154671, was assigned on May 23, 2006. Dr. Willstein graduated from University of Iowa, RJ & L Carver College of Medicine in 1985. Dr. Willstein holds Montana license 9552.
- NPI
- 1932154671NPI Registry (opens in a new tab)
- NPI enumeration date
- May 23, 2006
- NPI status
- Active
- Practice phone
- (406) 542-9695
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Gary J. Willstein practices at Missoula Bone & Joint Surgery Center in Missoula, Montana
Dr. Willstein's primary practice is Missoula Bone & Joint Surgery Center, at 2360 Mullan Rd Ste B, Missoula, MT 59808. The practice phone is (406) 542-9695.
- Missoula Bone & Joint Surgery Center2360 Mullan Rd Ste B, Missoula, MT 59808Phone(406) 542-9695
Source: Dmand AI Affiliation Data
Dr. Gary J. Willstein is affiliated with 1 site of care and 1 medical group
Dr. Willstein's primary practice is Missoula Bone & Joint Surgery Center in Missoula, Montana. The medical group on file is Missoula Bone & Joint. Dr. Willstein's employer is on file too: a surgery center (asc).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gary J. Willstein's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Willstein practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Missoula Bone & Joint Surgery Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gary J. Willstein is one of 99 orthopedic surgeons in Montana
Orthopaedic surgery is Dr. Willstein's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. Willstein is licensed in Montana.
Specialties and state licenses
- Orthopaedic surgery, MontanaPrimary
Orthopedic surgeons near Dr. Willstein
Counts of orthopedic 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. Gary J. Willstein billed Medicare for 12,300 services in 2024
CMS data shows 12,300 Medicare services from Dr. Willstein across 18 procedure codes in 2024, for 408 Medicare patients. Medicare paid $174,696 for them.
Dr. Willstein's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 1622024: 11,0016691%
- Office and hospital visits
- 2023: 5912024: 591No change
- Imaging
- 2023: 4502024: 4285%
- Surgery
- 2023: 2322024: 28021%
Where Dr. Willstein's Medicare services took place, 2024
- In an office12,19199%
- In a facility1091%
Dr. Willstein compared with the Montana median for orthopedic surgeons, 2024
- Dr. Willstein
- Montana median
- Medicare services
- 12,300vs 61220.1 times
- Medicare patients
- 408vs 24666% above
- Part D claims
- 319vs 704.6 times
Medians across 104 orthopedic surgeons in Montana with Dmand AI profiles that report each measure.
Dr. Willstein'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. Willstein and other orthopedic surgeons in Montana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gary J. Willstein treated 408 Medicare patients in 2024, average age 74
CMS counts 408 Medicare patients who saw Dr. Willstein in 2024. The largest group is 65 to 74, with 215 patients. 75% of them have arthritis, and 65% have high blood pressure. 4% are also on Medicaid. Their average risk score is 0.92, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Willstein's median patient age at 71, with 54% women.
Dr. Willstein's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Willstein's Medicare patients by sex, 2024
- Women21051%
- Men19849%
Chronic conditions among Dr. Willstein's Medicare patients, 2024
- Arthritis75%
- High blood pressure65%
- High cholesterol63%
- Mood disorders22%
- Depression20%
- Ischemic heart disease18%
- Anxiety16%
- Diabetes15%
Share of Medicare patients with each condition. A patient can have several.
Dr. Willstein's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
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. Gary J. Willstein wrote 374 Medicare Part D claims in 2024
In 2024, Dr. Willstein wrote 374 Medicare Part D claims for 145 patients. 97% of them were for generic drugs. CMS names the drug for 319 of them, across 7 drugs with 11 or more claims each, at $5,677 in total drug cost. In 2023, CMS named 213 claims across 6 drugs.
Dr. Willstein's Part D claims by kind of drug, 2024
- Generic364 claims97%
- Brand-name and other10 claims3%
Dr. Willstein'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 Dr. Willstein's Part D claims, 2024
- Opioids33%122 of 374 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: 2132024: 31950%
Drugs named by CMS: 7 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
Dr. Gary J. Willstein scored 29 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 29 out of 100 for Dr. Willstein for performance year 2024, reported individually.
Dr. Willstein's MIPS scores, performance year 2024
- 29of 100Final score
- 0of 100Quality
- 0of 100Promoting Interoperability
- 0of 100Improvement Activities
- 98of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Gary J. Willstein received $4,975 in industry payments from 2016 to 2024
CMS Open Payments shows 61 general payments to Dr. Willstein from 11 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 44% of the total. Stryker Corporation paid the most, $2,993.
General payments to Dr. Willstein by program year, 2016 to 2024
General payments to Dr. Willstein by kind, 2016 to 2024
- Food and beverage$2,17444%
- Travel and lodging$1,87038%
- Education$93119%
Companies that paid Dr. Willstein the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gary J. Willstein graduated from University of Iowa, RJ & L Carver College of Medicine
Dr. Willstein graduated from University of Iowa, RJ & L Carver College of Medicine in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gary J. Willstein'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)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Clinician Public Reporting: Overall MIPS Performance (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. Gary J. Willstein
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. Gary J. Willstein's NPI number?
Dr. Gary J. Willstein's NPI number is 1932154671. It was assigned on May 23, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gary J. Willstein?
Dr. Gary J. Willstein is an orthopedic surgeon in Missoula, Montana. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. Gary J. Willstein practice?
Dr. Willstein practices at 2360 Mullan Rd Ste B, Missoula, MT 59808. Dr. Willstein's primary practice is Missoula Bone & Joint Surgery Center in Missoula, Montana.
What is Dr. Gary J. Willstein's office phone number?
The practice phone on file for Dr. Willstein is (406) 542-9695.
What is Dr. Gary J. Willstein's medical license number?
Dr. Willstein holds Montana license 9552.
What medical group is Dr. Gary J. Willstein part of?
Dr. Willstein is linked to Missoula Bone & Joint.
Does Dr. Gary J. Willstein accept Medicare?
Yes. CMS data shows Dr. Willstein billed Medicare for 12,300 services in 2024.
What is Dr. Gary J. Willstein's MIPS score?
Dr. Willstein's MIPS final score for performance year 2024 is 29 out of 100, reported individually.
How many Medicare patients does Dr. Gary J. Willstein see?
CMS counts 408 Medicare patients who saw Dr. Willstein in 2024, with an average age of 74.
What services does Dr. Gary J. Willstein bill to Medicare?
In 2024, Dr. Willstein's most billed Medicare services were injected or infused drug (J1010), office visit, established patient (99213) and office visit, established patient (99214).
Show 4 more questionsShow fewer questions
Where did Dr. Gary J. Willstein go to medical school?
Dr. Willstein graduated from University of Iowa, RJ & L Carver College of Medicine in 1985.
What drugs does Dr. Gary J. Willstein prescribe most?
In 2024 Medicare Part D data, Dr. Willstein's most prescribed drugs by claims were Celecoxib, Oxycodone HCl and Meloxicam.
Has Dr. Gary J. Willstein received payments from drug or device companies?
CMS Open Payments shows $4,975 in general payments to Dr. Willstein from 11 companies from 2016 to 2024. The largest total came from Stryker Corporation.
How long has Dr. Gary J. Willstein been practicing?
Dr. Willstein graduated from medical school in 1985, 41 years ago.
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