Dr. Nathaniel Rieb, MD
- Medicare services, 2024
- 106
- Medicare patients, 2024
- 155
- Part D claims, 2024
- 190
- Publications
- 1
- MIPS score, 2024
- 83
- 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. Rieb's professional email, personal email and mobile number
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Dr. Nathaniel Rieb is a general surgeon in Billings, Montana
Dr. Rieb practices at Billings Clinic Hospital in Billings, Montana, part of Billings Clinic.
Dr. Rieb's NPI, 1508068834, was assigned on May 31, 2007. Dr. Rieb graduated from University of Washington School of Medicine in 2005. Dr. Rieb holds Wyoming license 1345.
- NPI
- 1508068834NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9234324179
- NPI enumeration date
- May 31, 2007
- 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
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Nathaniel Rieb practices at Billings Clinic Hospital in Billings, Montana
Dr. Rieb'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. Nathaniel Rieb is affiliated with 5 sites of care and 6 medical groups
Dr. Rieb's primary practice is Billings Clinic Hospital in Billings, Montana, part of Billings Clinic. Dr. Rieb is also affiliated with Beartooth Billings Clinic. The medical group on file is Billings Clinic. Dmand AI also links Dr. Rieb to 1 more hospital, 5 medical groups and 2 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. Nathaniel Rieb's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Rieb practices, 5 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 |
| +4 more sites and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Nathaniel Rieb is one of 111 general surgeons in Montana
Surgery is Dr. Rieb's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Rieb is licensed in Wyoming.
Specialties and state licenses
- Surgery, WyomingPrimary
General surgeons near Dr. Rieb
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. Nathaniel Rieb billed Medicare for 106 services in 2024
CMS data shows 106 Medicare services from Dr. Rieb across 6 procedure codes in 2024, for 155 Medicare patients. Medicare paid $16,204 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Rieb's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 342024: 5150%
- Other services
- 2023: 142024: 31121%
- Office and hospital visits
- 2023: 112024: 24118%
Dr. Rieb compared with the Montana median for general surgeons, 2024
- Dr. Rieb
- Montana median
- Medicare services
- 106vs 13521% below
- Medicare patients
- 155vs 12326% above
- Part D claims
- 170vs 424.0 times
Medians across 121 general surgeons in Montana with Dmand AI profiles that report each measure.
Dr. Rieb'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. Rieb and other general surgeons in Montana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nathaniel Rieb treated 155 Medicare patients in 2024, average age 72
CMS counts 155 Medicare patients who saw Dr. Rieb in 2024. The largest group is 65 to 74, with 94 patients. 57% of them have high blood pressure, and 50% have high cholesterol. Their average risk score is 0.99, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Rieb's median patient age at 70, with 55% women.
Dr. Rieb's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Rieb's Medicare patients by sex, 2024
- Women7951%
- Men7649%
Chronic conditions among Dr. Rieb's Medicare patients, 2024
- High blood pressure57%
- High cholesterol50%
- Arthritis30%
- Cancer26%
- Anxiety19%
- Mood disorders19%
- Depression18%
- Atrial fibrillation15%
Share of Medicare patients with each condition. A patient can have several.
Dr. Rieb's 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
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Nathaniel Rieb wrote 190 Medicare Part D claims in 2024
In 2024, Dr. Rieb wrote 190 Medicare Part D claims for 181 patients. 77% of them were for generic drugs. CMS names the drug for 170 of them, across 2 drugs with 11 or more claims each, at $3,338 in total drug cost. In 2023, CMS named 102 claims across 2 drugs.
Dr. Rieb's Part D claims by kind of drug, 2024
- Generic147 claims77%
- Brand-name43 claims23%
Dr. Rieb'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1022024: 17067%
Drugs named by CMS: 2 in 2024, 2 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. Nathaniel Rieb scored 83 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 83 out of 100 for Dr. Rieb for performance year 2024, reported as part of a group. Dr. Rieb accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 139 procedures of colonoscopy by Dr. Rieb, more than 87% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Rieb's MIPS scores, performance year 2024
- 83of 100Final score
- 71.7of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 70of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Rieb ranks in Medicare procedure volume
- Colonoscopy
- 87th percentile139 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 69th percentile68 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Nathaniel Rieb has 1 publication on record
Dmand AI links 1 paper to Dr. Rieb in 2025.
Recent publications by Dr. Rieb
See who Dr. Rieb researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Rieb works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Nathaniel Rieb received $28 in industry payments in 2023
CMS Open Payments shows 1 general payment to Dr. Rieb from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. Davol Inc. paid the most, $28.
Companies that paid Dr. Rieb the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Nathaniel Rieb graduated from University of Washington School of Medicine
Dr. Rieb graduated from University of Washington School of Medicine in 2005.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Nathaniel Rieb'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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Nathaniel Rieb
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. Nathaniel Rieb's NPI number?
Dr. Nathaniel Rieb's NPI number is 1508068834. It was assigned on May 31, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Nathaniel Rieb?
Dr. Nathaniel Rieb is a general surgeon in Billings, Montana. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Nathaniel Rieb practice?
Dr. Rieb practices at 2800 10th Ave N, Billings, MT 59101. Dr. Rieb's primary practice is Billings Clinic Hospital in Billings, Montana, part of Billings Clinic. Dmand AI also links Dr. Rieb to 1 hospital, 5 medical groups and 2 group practices and clinics.
What is Dr. Nathaniel Rieb's office phone number?
The practice phone on file for Dr. Rieb is (406) 657-4000.
What is Dr. Nathaniel Rieb's medical license number?
Dr. Rieb holds Wyoming license 1345.
Which hospitals is Dr. Nathaniel Rieb affiliated with?
Dr. Rieb practices at Billings Clinic Hospital in Billings, Montana. Dr. Rieb is also affiliated with Beartooth Billings Clinic. Dmand AI links Dr. Rieb to 1 more hospital.
What medical group is Dr. Nathaniel Rieb part of?
Dr. Rieb is linked to Billings Clinic. Dmand AI links Dr. Rieb to 5 more medical groups.
Does Dr. Nathaniel Rieb accept Medicare?
Yes. CMS data shows Dr. Rieb billed Medicare for 106 services in 2024, and Dr. Rieb accepts Medicare assignment.
What is Dr. Nathaniel Rieb's MIPS score?
Dr. Rieb's MIPS final score for performance year 2024 is 83 out of 100, reported as part of a group.
How many Medicare patients does Dr. Nathaniel Rieb see?
CMS counts 155 Medicare patients who saw Dr. Rieb in 2024, with an average age of 72.
Show 6 more questionsShow fewer questions
What services does Dr. Nathaniel Rieb bill to Medicare?
In 2024, Dr. Rieb's most billed Medicare services were surgery: digestive system (45385), medicare service (G0121) and surgery: digestive system (43235).
Where did Dr. Nathaniel Rieb go to medical school?
Dr. Rieb graduated from University of Washington School of Medicine in 2005.
What drugs does Dr. Nathaniel Rieb prescribe most?
In 2024 Medicare Part D data, Dr. Rieb's most prescribed drugs by claims were Gavilyte-G and Peg-3350 And Electrolytes.
Has Dr. Nathaniel Rieb received payments from drug or device companies?
CMS Open Payments shows $28 in general payments to Dr. Rieb from 1 company from 2023 to 2023. The largest total came from Davol Inc.
How long has Dr. Nathaniel Rieb been practicing?
Dr. Rieb graduated from medical school in 2005, 21 years ago.
Does Dr. Nathaniel Rieb do research?
Dmand AI links 1 publication to Dr. Rieb.
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