Louann Tsou Carnahan, D.O.
Neurology Physician · Tucson, AZ
Louann Tsou Carnahan, D.O. is a neurology physician with a practice address in Tucson, Arizona, and NPI 1386961696, issued on Apr 26, 2010. Check the license (Arizona 006750, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Louann Tsou Carnahan
- Credential
- D.O.
- Primary taxonomy
- Neurology Physician 2084N0400X
- License numbers
- 006750 AZ
125058749 IL
258894 MA
Self-reported in NPPES; status is on the state search - Practice location
- 2450 E River RD, Tucson, AZ 85718
- Phone
- (520) 795-7750
- Enumerated
- Apr 26, 2010
- Record last updated
- Feb 29, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20150826001410); accepts Medicare assignment
- Medical or professional school
- Kansas City University Of Physicians And Surgeons, 2010
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 458 in Arizona → Look up another NPI →
Also registered at 2450 E River RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gabriel Altamirano, ACNPC-AGAcute Care Nurse Practitioner1013431212
- Ryan Austerman, M.D.Neurological Surgery Physician1841644168
- Anwar Badruddoja, M.D.Neurology Physician1891779872
- Robert Barlow, M.D.General Practice Physician1730476920
- Stephanie Bourn-Macdonald, AUDAudiologist1447636063
- Jonathan BryantNeurology Physician1639639479
Verify Louann Tsou Carnahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 006750Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% fewer Medicare Part D claims than the average neurology physician in 2024
391 Medicare Part D claims for 136 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D.
Most prescribed
- Levetiracetam70 claims
- Lamotrigine38 claims
- Carbamazepine Er26 claims
- Divalproex Sodium Er23 claims
- Phenytoin Sodium Extended20 claims
- Zonisamide17 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $64.40
4 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 10,858 providers of this specialty with any payment received $8,318.07 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Neurological Associates OF TucsonTucson, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Louann Tsou Carnahan among 458 neurology physician records in Arizona
Louann Tsou Carnahan, D.O. is one of 458 neurology physician records with a practice address in Arizona. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 59% of them.
- NPI issued2010 · 59% of these records are older, 40% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2010 · median 2005 among the 298 with a school on file
- Record last updated2016 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in Arizona
There are 458 neurology physician records in Arizona.
All 458 in Arizona → Every provider in Tucson → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Anwar Badruddoja, M.D.Tucson, AZ 857181891779872
- Neal Baumbach, MDTucson, AZ 857181972604353
- Valerie Cwik, M.D.Tucson, AZ 857181164627329
- Mateja De Leonni Stanonik, MD, PHDTucson, AZ 857181730344102
- Robert Foote, MDTucson, AZ 857181730158007
- Michael Glynn, M.D.Tucson, AZ 857181083673628
- Enrique Labadie, M.D., FAANTucson, AZ 857181528153186
- W Noland, MDTucson, AZ 857181922077668
Common questions
What is Louann Tsou Carnahan, D.O.'s NPI number?
Louann Tsou Carnahan, D.O.'s National Provider Identifier (NPI) is 1386961696, issued on Apr 26, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Louann Tsou Carnahan, D.O. located?
The NPPES record lists a practice address at 2450 E River RD, Tucson, AZ, 85718. Phone: (520) 795-7750. Providers update this record themselves, so call before visiting.
How can I verify Louann Tsou Carnahan, D.O.'s license?
NPPES lists Arizona license number 006750, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Louann Tsou Carnahan, D.O. prescribe under Medicare Part D?
In 2024, Louann Tsou Carnahan, D.O. had 391 Medicare Part D claims for 136 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.