Alexander Dominicus Zwart, MD, FACP
Endocrinology, Diabetes & Metabolism Physician · Tucson, AZ
Alexander Dominicus Zwart, MD, FACP is an endocrinology, diabetes & metabolism physician with a practice address in Tucson, Arizona, and NPI 1225018856, issued on Jan 19, 2006. Check the license (Arizona 23182, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Alexander Dominicus Zwart
- Credential
- MD, FACP
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- 23182 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 5910 N LA Cholla Blvd, Tucson, AZ 85741
- Phone
- (520) 297-0404
- Enumerated
- Jan 19, 2006
- Record last updated
- Dec 4, 2025
- Fax
- (520) 297-0436
- Medicaid ID
- 315160 AZ
- Medicare enrollment
- Enrolled (PECOS I20101011000897); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 175 in Arizona → Look up another NPI →
Also registered at 5910 N LA Cholla Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David AlsterEndocrinology, Diabetes & Metabolism Physician1164457339
- Michael Candelario Tirado, MDPhysician Assistant1871293514
- Karma Carty, MSN, APRN, FNP- CFamily Nurse Practitioner1700495306
- Ernest Fox, PAPhysician Assistant1104809854
- Troy Gustaveson, PA-CMedical Physician Assistant1902357171
- Ashley Munro, R.D.Registered Dietitian1104220979
Verify Alexander Dominicus Zwart in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 23182Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average endocrinology, diabetes & metabolism physician in 2024
6,823 Medicare Part D claims for 996 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 37% of claims.
Most prescribed
- Levothyroxine Sodium1,022 claims
- Atorvastatin Calcium303 claims
- Methimazole274 claims
- Liothyronine Sodium249 claims
- Ozempic229 claims
- Ezetimibe188 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 98.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $326.21
12 payments; by number, the most common kind was food and beverage; the largest payer was Dexcom, Inc. The 5,661 providers of this specialty with any payment received $5,742.15 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 2 group practices
- EL Rio Santa Cruz Neighborhood Health Center, Inc.Tucson, AZ
- Tucson Endocrine Associates PLLCTucson, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alexander Dominicus Zwart among 175 endocrinology, diabetes & metabolism physician records in Arizona
Alexander Dominicus Zwart, MD, FACP is one of 175 endocrinology, diabetes & metabolism 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 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 61% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1988 · median 2005 among the 107 with a school on file
- Record last updated2025 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Arizona
There are 175 endocrinology, diabetes & metabolism physician records in Arizona.
All 175 in Arizona → Every provider in Tucson → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- David AlsterTucson, AZ 857411164457339
- Neda Ebrahimi, MDTucson, AZ 857411679033781
- Dorota Pucyk, M.D.Tucson, AZ 857421235275785
- Janet Funk, MDTucson, AZ 857241881254688
- Merilyn Goldschmid, MDTucson, AZ 857241730152489
- David Johnson, MDTucson, AZ 857241437258852
- Stephanie Giffin, DOTucson, AZ 857231528592359
- Stephen Thomson, MDTucson, AZ 857231316903891
Common questions
What is Alexander Dominicus Zwart, MD, FACP's NPI number?
Alexander Dominicus Zwart, MD, FACP's National Provider Identifier (NPI) is 1225018856, issued on Jan 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Alexander Dominicus Zwart, MD, FACP located?
The NPPES record lists a practice address at 5910 N LA Cholla Blvd, Tucson, AZ, 85741. Phone: (520) 297-0404. Providers update this record themselves, so call before visiting.
How can I verify Alexander Dominicus Zwart, MD, FACP's license?
NPPES lists Arizona license number 23182, 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 Alexander Dominicus Zwart, MD, FACP prescribe under Medicare Part D?
In 2024, Alexander Dominicus Zwart, MD, FACP had 6,823 Medicare Part D claims for 996 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
What is Alexander Dominicus Zwart, MD, FACP's MIPS final score?
The 2023 MIPS final score is 98.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.