Brian D. Marks, D.O.
Internal Medicine Physician · Scottsdale, AZ
Brian D. Marks, D.O. is an internal medicine physician with a practice address in Scottsdale, Arizona, and NPI 1013982883, issued on Feb 23, 2006. Check the license (Arizona 2964, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Brian D. Marks
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 2964 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 5111 N Scottsdale RD Ste 158, Scottsdale, AZ 85250
- Phone
- (480) 949-7080
- Enumerated
- Feb 23, 2006
- Record last updated
- Feb 9, 2026
- Fax
- (480) 675-9145
- Medicare enrollment
- Enrolled (PECOS I20050928001361); accepts Medicare assignment
- Medical or professional school
- Midwestern University, Chicago College Of Osteopathic Med, 1992
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,853 in Arizona → Look up another NPI →
Verify Brian D. Marks in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 2964Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3% more Medicare Part D claims than the average internal medicine physician in 2024
3,283 Medicare Part D claims for 280 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Atorvastatin Calcium385 claims
- Levothyroxine Sodium233 claims
- Amlodipine Besylate142 claims
- Lisinopril106 claims
- Pioglitazone Hcl91 claims
- Tamsulosin Hcl85 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: $1,043.29
37 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Brian D. Marks among 2,853 internal medicine physician records in Arizona
Brian D. Marks, D.O. is one of 2,853 internal medicine physician records with a practice address in Arizona. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 55% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1992 · median 2003 among the 1,643 with a school on file
- Record last updated2026 · 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 207R00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
344 internal medicine physician records list a practice address in Scottsdale
They are 344 of the 11,008 NPPES records with a practice address in Scottsdale, and 2,853 internal medicine physician records in Arizona.
All 2,853 in Arizona → Every provider in Scottsdale → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Saul Amber, MDScottsdale, AZ 852501609921915
- Barry Freeman, M.D.Scottsdale, AZ 852501053450932
- Nima Ghadimi, MDScottsdale, AZ 852501891894333
- Mitzi Krockover, M.D.Scottsdale, AZ 852501104039593
- Jacque Sokolov, M.D.Scottsdale, AZ 852501881806982
- Mohammed Alhassen, MDChandler, AZ 852491730140781
- Rama Devineni, MDChandler, AZ 852491750312484
- Kathryn Lee, MDScottsdale, AZ 852511235124876
Common questions
What is Brian D. Marks, D.O.'s NPI number?
Brian D. Marks, D.O.'s National Provider Identifier (NPI) is 1013982883, issued on Feb 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Brian D. Marks, D.O. located?
The NPPES record lists a practice address at 5111 N Scottsdale RD Ste 158, Scottsdale, AZ, 85250. Phone: (480) 949-7080. Providers update this record themselves, so call before visiting.
How can I verify Brian D. Marks, D.O.'s license?
NPPES lists Arizona license number 2964, 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 Brian D. Marks, D.O. prescribe under Medicare Part D?
In 2024, Brian D. Marks, D.O. had 3,283 Medicare Part D claims for 280 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.