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Dr. Louann Tsou Carnahan, DO
NPI1386961696PAC ID1759697493
- Medicare services, 2024
- 117
- Medicare patients, 2024
- 116
- Part D claims, 2024
- 391
- Publications
- 1
- Hospital affiliations
- 1
- Practice address
- 5301 East Grant Road, Tucson, AZ 85712
- Practice phone
- Call (520) 324-1399
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Carnahan's professional email, personal email and mobile number
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Dr. Louann Tsou Carnahan is a neurologist in Tucson, Arizona
Dr. Carnahan practices at Tucson Medical Center in Tucson, Arizona, part of TMC HealthCare.
Dr. Carnahan's NPI, 1386961696, was assigned on April 26, 2010. Dr. Carnahan graduated from Kansas City University of Physicians and Surgeons in 2010. Dr. Carnahan holds Arizona license 006750.
NPI and contact details
- NPI
- 1386961696NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1759697493
- NPI enumeration date
- April 26, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (520) 324-1399
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Louann Tsou Carnahan practices at Tucson Medical Center in Tucson, Arizona
Dr. Carnahan's primary practice is Tucson Medical Center, at 5301 East Grant Road, Tucson, AZ 85712 in Pima County. The practice phone is (520) 324-1399.
- Tucson Medical Center5301 East Grant Road, Tucson, AZ 85712 · Pima CountyPhone(520) 324-1399
Source: Dmand AI Affiliation Data
Dr. Louann Tsou Carnahan is affiliated with 2 sites of care and 1 medical group
Dr. Carnahan's primary practice is Tucson Medical Center in Tucson, Arizona, part of TMC HealthCare. The medical group on file is Center for Neurosciences. Dmand AI also links Dr. Carnahan to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Louann Tsou Carnahan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Carnahan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Tucson Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Louann Tsou Carnahan is one of 395 neurologists in Arizona
Neurology is Dr. Carnahan's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dmand AI has Dr. Carnahan's licenses on file in 3 states: Arizona, Illinois and Massachusetts.
Specialties and state licenses
- Neurology, ArizonaPrimary
- Student in an organized health care education/training program, Illinois
- Massachusetts license
Neurologists near Dr. Carnahan
Counts of neurologists 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. Louann Tsou Carnahan billed Medicare for 117 services in 2024
CMS data shows 117 Medicare services from Dr. Carnahan across 2 procedure codes in 2024, for 116 Medicare patients. Medicare paid $4,990 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024117
Medicare patients116
Paid by Medicare$4,990
Procedure codes2
Dr. Carnahan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 502024: 117134%
- Office and hospital visits
- 2023: 1312024: 0100%
Dr. Carnahan compared with the Arizona median for neurologists, 2024
- Dr. Carnahan
- Arizona median
- Medicare services
- 117vs 51277% below
- Medicare patients
- 116vs 27257% below
- Part D claims
- 231vs 48753% below
Medians across 365 neurologists in Arizona with Dmand AI profiles that report each measure.
Dr. Carnahan'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.
Need commercial claims for Dr. Carnahan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Carnahan and other neurologists in Arizona.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Louann Tsou Carnahan treated 116 Medicare patients in 2024, average age 76
CMS counts 116 Medicare patients who saw Dr. Carnahan in 2024. The largest group is 75 to 84, with 47 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 15% are also on Medicaid. Their average risk score is 2.19, 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. Carnahan's median patient age at 60, with 51% women.
Medicare patients, 2024116
Average age76
Average risk score2.19
Also on Medicaid15%
Dr. Carnahan's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Carnahan's Medicare patients by sex, 2024
- Women5648%
- Men6052%
Chronic conditions among Dr. Carnahan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Stroke or TIA61%
- Arthritis54%
- Diabetes47%
- Mood disorders47%
- Anxiety45%
- Depression44%
Share of Medicare patients with each condition. A patient can have several.
Dr. Carnahan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women51%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Louann Tsou Carnahan wrote 391 Medicare Part D claims in 2024
In 2024, Dr. Carnahan wrote 391 Medicare Part D claims for 136 patients. 83% of them were for generic drugs. CMS names the drug for 231 of them, across 9 drugs with 11 or more claims each, at $13,986 in total drug cost. In 2023, CMS named 3,086 claims across 51 drugs.
Part D claims, 2024391
Drugs named by CMS9
Total drug cost$13,986
Part D patients136
Dr. Carnahan's Part D claims by kind of drug, 2024
- Generic323 claims83%
- Brand-name and other68 claims17%
Dr. Carnahan'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: 3,0862024: 23193%
Drugs named by CMS: 9 in 2024, 51 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. Louann Tsou Carnahan takes part in Medicare
Dr. Carnahan 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. Louann Tsou Carnahan has 1 publication on record
Dmand AI links 1 paper to Dr. Carnahan.
Papers1
Recent publications by Dr. Carnahan
See who Dr. Carnahan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Carnahan works with, so you can find a warm path to the right neurologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Louann Tsou Carnahan received $3,452 in industry payments from 2016 to 2025
CMS Open Payments shows 198 general payments to Dr. Carnahan from 30 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Eisai Inc. paid the most, $1,052.
General payments to Dr. Carnahan by program year, 2016 to 2025
Companies that paid Dr. Carnahan the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Louann Tsou Carnahan graduated from Kansas City University of Physicians and Surgeons
Dr. Carnahan graduated from Kansas City University of Physicians and Surgeons in 2010.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Louann Tsou Carnahan'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) |
| 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. Louann Tsou Carnahan
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. Louann Tsou Carnahan's NPI number?
Dr. Louann Tsou Carnahan's NPI number is 1386961696. It was assigned on April 26, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Louann Tsou Carnahan?
Dr. Louann Tsou Carnahan is a neurologist in Tucson, Arizona. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).
Where does Dr. Louann Tsou Carnahan practice?
Dr. Carnahan practices at 5301 East Grant Road, Tucson, AZ 85712. Dr. Carnahan's primary practice is Tucson Medical Center in Tucson, Arizona, part of TMC HealthCare. Dmand AI also links Dr. Carnahan to 1 group practice or clinic.
What is Dr. Louann Tsou Carnahan's office phone number?
The practice phone on file for Dr. Carnahan is (520) 324-1399.
What is Dr. Louann Tsou Carnahan's medical license number?
Dr. Carnahan holds Arizona license 006750, one of the licenses on file in 3 states.
Which states has Dr. Louann Tsou Carnahan been licensed in?
Dmand AI has state licenses on file for Dr. Carnahan in Arizona, Illinois and Massachusetts.
Which hospitals is Dr. Louann Tsou Carnahan affiliated with?
Dr. Carnahan practices at Tucson Medical Center in Tucson, Arizona.
What medical group is Dr. Louann Tsou Carnahan part of?
Dr. Carnahan is linked to Center for Neurosciences.
Does Dr. Louann Tsou Carnahan accept Medicare?
Yes. CMS data shows Dr. Carnahan billed Medicare for 117 services in 2024, and Dr. Carnahan accepts Medicare assignment.
How many Medicare patients does Dr. Louann Tsou Carnahan see?
CMS counts 116 Medicare patients who saw Dr. Carnahan in 2024, with an average age of 76.
Show 6 more questionsShow fewer questions
What services does Dr. Louann Tsou Carnahan bill to Medicare?
In 2024, Dr. Carnahan's most billed Medicare services were nerve and brain test (95816) and nerve and brain test (95819).
Where did Dr. Louann Tsou Carnahan go to medical school?
Dr. Carnahan graduated from Kansas City University of Physicians and Surgeons in 2010.
What drugs does Dr. Louann Tsou Carnahan prescribe most?
In 2024 Medicare Part D data, Dr. Carnahan's most prescribed drugs by claims were Levetiracetam, Lamotrigine and Carbamazepine ER.
Has Dr. Louann Tsou Carnahan received payments from drug or device companies?
CMS Open Payments shows $3,452 in general payments to Dr. Carnahan from 30 companies from 2016 to 2025. The largest total came from Eisai Inc.
How long has Dr. Louann Tsou Carnahan been practicing?
Dr. Carnahan graduated from medical school in 2010, 16 years ago.
Does Dr. Louann Tsou Carnahan do research?
Dmand AI links 1 publication to Dr. Carnahan.
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