Dr. Lynn Y-Nhi Clewley, MD
- Medicare services, 2024
- 417
- Medicare patients, 2024
- 265
- Part D claims, 2024
- 58
- Hospital affiliations
- 2
- Industry payments
- $10,017
- 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. Clewley's professional email, personal email and mobile number
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Dr. Lynn Y-Nhi Clewley is a general surgeon in Billings, Montana
Dr. Clewley practices at Billings Clinic Hospital in Billings, Montana, part of Billings Clinic.
Dr. Clewley's NPI, 1598110561, was assigned on April 27, 2016. Dr. Clewley graduated from University of Utah School of Medicine in 2016. Dr. Clewley holds Georgia license 8647.
- NPI
- 1598110561NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7113285024
- NPI enumeration date
- April 27, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (406) 657-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- 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)
Dr. Lynn Y-Nhi Clewley practices at Billings Clinic Hospital in Billings, Montana
Dr. Clewley'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. Lynn Y-Nhi Clewley is affiliated with 2 sites of care and 1 medical group
Dr. Clewley's primary practice is Billings Clinic Hospital in Billings, Montana, part of Billings Clinic. Dr. Clewley is also affiliated with Washakie Medical Center. The medical group on file is Billings Clinic.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Lynn Y-Nhi Clewley's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Clewley practices, 2 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 |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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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. Lynn Y-Nhi Clewley is one of 111 general surgeons in Montana
Surgery is Dr. Clewley's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dmand AI has Dr. Clewley's licenses on file in 2 states: Georgia and Montana.
Specialties and state licenses
- Surgery, GeorgiaPrimary
- Montana license
General surgeons near Dr. Clewley
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. Lynn Y-Nhi Clewley billed Medicare for 417 services in 2024
CMS data shows 417 Medicare services from Dr. Clewley across 13 procedure codes in 2024, for 265 Medicare patients. Medicare paid $45,387 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Clewley's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3172024: 36916%
- Surgery
- 2023: 622024: 4823%
Dr. Clewley compared with the Montana median for general surgeons, 2024
- Dr. Clewley
- Montana median
- Medicare services
- 417vs 1353.1 times
- Medicare patients
- 265vs 1232.2 times
- Part D claims
- 37vs 4212% below
Medians across 121 general surgeons in Montana with Dmand AI profiles that report each measure.
Dr. Clewley'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Lynn Y-Nhi Clewley treated 265 Medicare patients in 2024, average age 73
CMS counts 265 Medicare patients who saw Dr. Clewley in 2024. The largest group is 65 to 74, with 114 patients. 72% of them have high blood pressure, and 60% have high cholesterol. 17% are also on Medicaid. Their average risk score is 1.55, 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. Clewley's median patient age at 71, with 72% women.
Dr. Clewley's Medicare patients by age, 2024
Dr. Clewley's Medicare patients by sex, 2024
- Women16261%
- Men10339%
Chronic conditions among Dr. Clewley's Medicare patients, 2024
- High blood pressure72%
- High cholesterol60%
- Arthritis46%
- Cancer36%
- Mood disorders35%
- Depression34%
- Diabetes29%
- Anxiety28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Clewley'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
- Women72%
- Men28%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Lynn Y-Nhi Clewley wrote 58 Medicare Part D claims in 2024
In 2024, Dr. Clewley wrote 58 Medicare Part D claims for 29 patients. 98% of them were for generic drugs. CMS names the drug for 37 of them, across 3 drugs with 11 or more claims each, at $214 in total drug cost.
Dr. Clewley's Part D claims by kind of drug, 2024
- Generic57 claims98%
- Brand-name and other1 claims2%
Dr. Clewley'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. Clewley's Part D claims, 2024
- Antibiotics60%35 of 58 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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. Lynn Y-Nhi Clewley ranks in the 77th percentile for hernia repair (minimally invasive) in Medicare
Dr. Clewley accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Clewley as offering telehealth. CMS counts 13 procedures of hernia repair (minimally invasive) by Dr. Clewley, more than 77% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. Clewley ranks in Medicare procedure volume
- Mastectomy
- 75th percentile17 procedures
- Hernia repair (minimally invasive)
- 77th percentile13 procedures
- Removal of tissue
- 64th percentile13 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Colonoscopy: 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. Lynn Y-Nhi Clewley received $10,017 in industry payments from 2021 to 2025
CMS Open Payments shows 38 general payments to Dr. Clewley from 6 drug and device companies from 2021 to 2025. Travel and lodging make up the largest share, 57% of the total. Intuitive Surgical, Inc. paid the most, $8,914.
General payments to Dr. Clewley by program year, 2021 to 2025
General payments to Dr. Clewley by kind, 2021 to 2025
- Travel and lodging$5,66657%
- Education$2,50025%
- Food and beverage$1,85218%
Companies that paid Dr. Clewley the most, 2021 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Lynn Y-Nhi Clewley graduated from University of Utah School of Medicine
Dr. Clewley graduated from University of Utah School of Medicine in 2016.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Lynn Y-Nhi Clewley'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 | 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. Lynn Y-Nhi Clewley
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. Lynn Y-Nhi Clewley's NPI number?
Dr. Lynn Y-Nhi Clewley's NPI number is 1598110561. It was assigned on April 27, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Lynn Y-Nhi Clewley?
Dr. Lynn Y-Nhi Clewley is a general surgeon in Billings, Montana. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Lynn Y-Nhi Clewley practice?
Dr. Clewley practices at 2800 10th Ave N, Billings, MT 59101. Dr. Clewley's primary practice is Billings Clinic Hospital in Billings, Montana, part of Billings Clinic.
What is Dr. Lynn Y-Nhi Clewley's office phone number?
The practice phone on file for Dr. Clewley is (406) 657-4000.
What is Dr. Lynn Y-Nhi Clewley's medical license number?
Dr. Clewley holds Georgia license 8647, one of the licenses on file in 2 states.
Which states has Dr. Lynn Y-Nhi Clewley been licensed in?
Dmand AI has state licenses on file for Dr. Clewley in Georgia and Montana.
Which hospitals is Dr. Lynn Y-Nhi Clewley affiliated with?
Dr. Clewley practices at Billings Clinic Hospital in Billings, Montana. Dr. Clewley is also affiliated with Washakie Medical Center.
What medical group is Dr. Lynn Y-Nhi Clewley part of?
Dr. Clewley is linked to Billings Clinic.
Does Dr. Lynn Y-Nhi Clewley accept Medicare?
Yes. CMS data shows Dr. Clewley billed Medicare for 417 services in 2024, and Dr. Clewley accepts Medicare assignment.
Does Dr. Lynn Y-Nhi Clewley offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Clewley as offering telehealth services.
Show 6 more questionsShow fewer questions
How many Medicare patients does Dr. Lynn Y-Nhi Clewley see?
CMS counts 265 Medicare patients who saw Dr. Clewley in 2024, with an average age of 73.
What services does Dr. Lynn Y-Nhi Clewley bill to Medicare?
In 2024, Dr. Clewley's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99222) and office visit, new patient (99205).
Where did Dr. Lynn Y-Nhi Clewley go to medical school?
Dr. Clewley graduated from University of Utah School of Medicine in 2016.
What drugs does Dr. Lynn Y-Nhi Clewley prescribe most?
In 2024 Medicare Part D data, Dr. Clewley's most prescribed drugs by claims were Metronidazole, Neomycin Sulfate and Ondansetron HCl.
Has Dr. Lynn Y-Nhi Clewley received payments from drug or device companies?
CMS Open Payments shows $10,017 in general payments to Dr. Clewley from 6 companies from 2021 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Lynn Y-Nhi Clewley been practicing?
Dr. Clewley graduated from medical school in 2016, 10 years ago.
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