Ivan Sierra
Internal Medicine Physician · Tucson, AZ
Ivan Sierra is an internal medicine physician with a practice address in Tucson, Arizona, and NPI 1194347518, issued on May 7, 2020. Check the license (Arizona 70621, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Ivan Sierra
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 70621 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 1625 N Campbell Ave, Tucson, AZ 85719
- Phone
- (910) 922-5612
- Enumerated
- May 7, 2020
- Record last updated
- May 6, 2024
- Medicare enrollment
- Enrolled (PECOS I20231025002441); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,853 in Arizona → Look up another NPI →
Also registered at 1625 N Campbell Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kristopher Abbate, MDInternal Medicine Physician1184112401
- Michelle Abbate, MDObstetrics & Gynecology Physician1184111940
- Abdelrahman AbdallaDiagnostic Radiology Physician1457139339
- Jonathan Abdo, MDStudent in an Organized Health Care Education/Training Program1811783814
- Kalkidan Abebe, MDInternal Medicine Physician1508435504
- Sameer Aboufadel, DO, MPHEmergency Medicine Physician1639063431
Verify Ivan Sierra in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 70621Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average internal medicine physician in 2024
232 Medicare Part D claims for 105 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. 13 claims were for opioids.
Most prescribed
- Doxycycline Hyclate14 claims
- Eliquis12 claims
- Oxycodone Hcl11 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: $739.45
6 payments; by number, the most common kind was food and beverage; the largest payer was Abbott Laboratories. 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.
Bills Medicare through one group practice
- Banner-University Medical GroupTucson, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ivan Sierra among 2,853 internal medicine physician records in Arizona
Ivan Sierra 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 2020, is newer than 81% of them.
- NPI issued2020 · 81% of these records are older, 16% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2015 · median 2003 among the 1,643 with a school on file
- Record last updated2024 · 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
- Bujji Ainapurapu, MDTucson, AZ 857191952624868
- Alvaro Altamirano Ufion, M.DTucson, AZ 857191144614363
- Nana Atuahene, MDTucson, AZ 857191629325774
- Danielle Avila, MDTuscon, AZ 857191154715365
- Ivan Borbon, DOTucson, AZ 857191487036679
- David Brual, M.D.Tucson, AZ 857191063824993
- David Buechel, D.O., F.A.C.O.I.Tucson, AZ 857191124003041
- Phillip Dattilo, DOTucson, AZ 857191861545048
Common questions
What is Ivan Sierra's NPI number?
Ivan Sierra's National Provider Identifier (NPI) is 1194347518, issued on May 7, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Ivan Sierra located?
The NPPES record lists a practice address at 1625 N Campbell Ave, Tucson, AZ, 85719. Phone: (910) 922-5612. Providers update this record themselves, so call before visiting.
How can I verify Ivan Sierra's license?
NPPES lists Arizona license number 70621, 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 Ivan Sierra prescribe under Medicare Part D?
In 2024, Ivan Sierra had 232 Medicare Part D claims for 105 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.