Dr. Katrina Lorrayne Rathjen, DO
- Medicare services, 2024
- 27
- Medicare patients, 2024
- 13
- Part D claims, 2024
- 5,838
- Industry payments
- $517
- Affiliated sites
- 2
- Practice address
- 6355 S Buffalo Dr, Las Vegas, NV 89113
- Practice phone
- Call (702) 566-5500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Intermountain Health
Las Vegas, Nevada
Find Dr. Rathjen'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. Katrina Lorrayne Rathjen is an internist in Las Vegas, Nevada
Dr. Rathjen practices at Intermountain Health in Las Vegas, Nevada.
Dr. Rathjen's NPI, 1316434293, was assigned on April 17, 2018. Dr. Rathjen graduated from Kansas City University of Med & Biosciences, College of Osteo Med in 2018. Dr. Rathjen holds Nevada license DO3240.
- NPI
- 1316434293NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0345625265
- NPI enumeration date
- April 17, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (702) 566-5500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Katrina Lorrayne Rathjen practices at Intermountain Health in Las Vegas, Nevada
Dr. Rathjen's primary practice is Intermountain Health, at 6355 S Buffalo Dr, Las Vegas, NV 89113 in Clark County. The practice phone is (702) 566-5500.
- Intermountain Health6355 S Buffalo Dr, Las Vegas, NV 89113 · Clark CountyPhone(702) 566-5500
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Katrina Lorrayne Rathjen is affiliated with 3 sites of care and 2 medical groups
Dr. Rathjen's primary practice is Intermountain Health in Las Vegas, Nevada. The medical group on file is Intermountain Health. Dmand AI also links Dr. Rathjen to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Katrina Lorrayne Rathjen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Rathjen practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Intermountain Health | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Katrina Lorrayne Rathjen is one of 1,019 internists in Nevada
Internal medicine is Dr. Rathjen's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Rathjen's licenses on file in 2 states: Nevada and Texas.
Specialties and state licenses
- Internal medicine, NevadaPrimary
- Texas license
Internists near Dr. Rathjen
Counts of internists 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. Katrina Lorrayne Rathjen billed Medicare for 27 services in 2024
CMS data shows 27 Medicare services from Dr. Rathjen across 1 procedure code in 2024, all of them office visits, for 13 Medicare patients. Medicare paid $2,300 for them. Every service was in an office.
Dr. Rathjen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 262024: 274%
Dr. Rathjen compared with the Nevada median for internists, 2024
- Dr. Rathjen
- Nevada median
- Medicare services
- 27vs 52095% below
- Medicare patients
- 13vs 19193% below
- Part D claims
- 5,141vs 36414.1 times
Medians across 935 internists in Nevada with Dmand AI profiles that report each measure.
Dr. Rathjen'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. Rathjen and other internists in Nevada.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Katrina Lorrayne Rathjen treated 13 Medicare patients in 2024, average age 72
CMS counts 13 Medicare patients who saw Dr. Rathjen in 2024. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.75, 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. Rathjen's median patient age at 74, with 63% women.
Chronic conditions among Dr. Rathjen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
Share of Medicare patients with each condition. A patient can have several.
Dr. Rathjen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women63%
- Men36%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Katrina Lorrayne Rathjen wrote 5,838 Medicare Part D claims in 2024
In 2024, Dr. Rathjen wrote 5,838 Medicare Part D claims for 726 patients. 87% of them were for generic drugs. CMS names the drug for 5,141 of them, across 94 drugs with 11 or more claims each, at $513,906 in total drug cost. In 2023, CMS named 3,177 claims across 79 drugs.
Dr. Rathjen's Part D claims by kind of drug, 2024
- Generic5,068 claims87%
- Brand-name708 claims12%
- Other62 claims1%
Dr. Rathjen'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. Rathjen's Part D claims, 2024
- Opioids3%174 of 5,838 claims
- Antibiotics2%88 of 5,838 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: 3,1772024: 5,14162%
Drugs named by CMS: 94 in 2024, 79 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. Katrina Lorrayne Rathjen takes part in Medicare
Dr. Rathjen 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. Katrina Lorrayne Rathjen received $517 in industry payments from 2018 to 2025
CMS Open Payments shows 21 general payments to Dr. Rathjen from 10 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 100% of the total. Exact Sciences Corporation paid the most, $140.
General payments to Dr. Rathjen by program year, 2018 to 2025
Companies that paid Dr. Rathjen the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Katrina Lorrayne Rathjen graduated from Kansas City University of Med & Biosciences, College of Osteo Med
Dr. Rathjen graduated from Kansas City University of Med & Biosciences, College of Osteo Med in 2018.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Katrina Lorrayne Rathjen'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| 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. Katrina Lorrayne Rathjen
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. Katrina Lorrayne Rathjen's NPI number?
Dr. Katrina Lorrayne Rathjen's NPI number is 1316434293. It was assigned on April 17, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Katrina Lorrayne Rathjen?
Dr. Katrina Lorrayne Rathjen is an internist in Las Vegas, Nevada. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Katrina Lorrayne Rathjen practice?
Dr. Rathjen practices at 6355 S Buffalo Dr, Las Vegas, NV 89113. Dr. Rathjen's primary practice is Intermountain Health in Las Vegas, Nevada. Dmand AI also links Dr. Rathjen to 2 group practices and clinics and 1 medical group.
What is Dr. Katrina Lorrayne Rathjen's office phone number?
The practice phone on file for Dr. Rathjen is (702) 566-5500.
What is Dr. Katrina Lorrayne Rathjen's medical license number?
Dr. Rathjen holds Nevada license DO3240, one of the licenses on file in 2 states.
Which states has Dr. Katrina Lorrayne Rathjen been licensed in?
Dmand AI has state licenses on file for Dr. Rathjen in Nevada and Texas.
What medical group is Dr. Katrina Lorrayne Rathjen part of?
Dr. Rathjen is linked to Intermountain Health. Dmand AI links Dr. Rathjen to 1 more medical group.
Does Dr. Katrina Lorrayne Rathjen accept Medicare?
Yes. CMS data shows Dr. Rathjen billed Medicare for 27 services in 2024, and Dr. Rathjen accepts Medicare assignment.
How many Medicare patients does Dr. Katrina Lorrayne Rathjen see?
CMS counts 13 Medicare patients who saw Dr. Rathjen in 2024, with an average age of 72.
What services does Dr. Katrina Lorrayne Rathjen bill to Medicare?
In 2024, Dr. Rathjen's most billed Medicare services were office visit, established patient (99214).
Show 4 more questionsShow fewer questions
Where did Dr. Katrina Lorrayne Rathjen go to medical school?
Dr. Rathjen graduated from Kansas City University of Med & Biosciences, College of Osteo Med in 2018.
What drugs does Dr. Katrina Lorrayne Rathjen prescribe most?
In 2024 Medicare Part D data, Dr. Rathjen's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Lisinopril.
Has Dr. Katrina Lorrayne Rathjen received payments from drug or device companies?
CMS Open Payments shows $517 in general payments to Dr. Rathjen from 10 companies from 2018 to 2025. The largest total came from Exact Sciences Corporation.
How long has Dr. Katrina Lorrayne Rathjen been practicing?
Dr. Rathjen graduated from medical school in 2018, 8 years ago.
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