Tom Marco, DO
Internal Medicine Physician · Tucson, AZ
Tom Marco, DO is an internal medicine physician with a practice address in Tucson, Arizona, and NPI 1093403156, issued on Apr 26, 2023. Check the license (Arizona R4065, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Tom Marco
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- R4065 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 3601 S 6TH Ave, Tucson, AZ 85723
- Phone
- (520) 792-1450
- Enumerated
- Apr 26, 2023
- Record last updated
- May 16, 2023
- Fax
- (520) 629-4631
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,853 in Arizona → Look up another NPI →
Also registered at 3601 S 6TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elizabeth Acree, LMSWSocial Worker1215651336
- Emily AdamsClinical Social Worker1932694429
- Marion Adams, N.P.Gerontology Nurse Practitioner1174633523
- Sulaiman AdejumobiSocial Worker1619743481
- Rebecca Adiutori Magnotto, RNCPsychiatric/Mental Health Registered Nurse1033221825
- Corinne Adkins, RRTRegistered Respiratory Therapist1427374602
Verify Tom Marco in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license R4065Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
24 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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: $15.82
1 payment: food and beverage; the largest payer was Sobi, Inc. 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.
Tom Marco among 2,853 internal medicine physician records in Arizona
Tom Marco, DO 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 2023, is newer than 91% of them.
- NPI issued2023 · 91% of these records are older, 7% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2023 · 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).
651 internal medicine physician records list a practice address in Tucson
They are 651 of the 18,788 NPPES records with a practice address in Tucson, and 2,853 internal medicine physician records in Arizona.
All 2,853 in Arizona → Every provider in Tucson → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Robert Bornstein, D.O.Tucson, AZ 857231972588937
- Ethel Condon, MDTucson, AZ 857231558321067
- Alan Frolich, M.D.Tucson, AZ 857231154393007
- Mary Gilles, M.D.Tucson, AZ 857231710080742
- Michael Habib, MD.CMTucson, AZ 857231154387546
- Richard Hoffman, MDTucson, AZ 857231316056385
- Fabia Kwiecinski, M.D.Tucson, AZ 857231871506642
- Deborah Lindsly, MDTucson, AZ 857231487608121
Common questions
What is Tom Marco, DO's NPI number?
Tom Marco, DO's National Provider Identifier (NPI) is 1093403156, issued on Apr 26, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Tom Marco, DO located?
The NPPES record lists a practice address at 3601 S 6TH Ave, Tucson, AZ, 85723. Phone: (520) 792-1450. Providers update this record themselves, so call before visiting.
How can I verify Tom Marco, DO's license?
NPPES lists Arizona license number R4065, 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 Tom Marco, DO prescribe under Medicare Part D?
In 2024, Tom Marco, DO had 24 Medicare Part D claims; 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.