Michael Joseph Horwath, MD
Endocrinology, Diabetes & Metabolism Physician · Alexandria, VA
Michael Joseph Horwath, MD is an endocrinology, diabetes & metabolism physician with a practice address in Alexandria, Virginia, and NPI 1861427932, issued on Jul 11, 2006. Check the license (Virginia 0101037920, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- Michael Joseph Horwath
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License numbers
- 0101037920 VA
37920 VA
Self-reported in NPPES; status is on the state search - Practice location
- 6355 Walker LN Ste 405, Alexandria, VA 22310
- Phone
- (703) 719-6715
- Enumerated
- Jul 11, 2006
- Record last updated
- Sep 21, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (703) 719-5762
- Medicaid ID
- 6076815 VA
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 264 in Virginia → Look up another NPI →
Also registered at 6355 Walker LN Ste 405
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Oksana Davydov, MDEndocrinology, Diabetes & Metabolism Physician1740568039
- Mehreen Husain, M.D.Endocrinology, Diabetes & Metabolism Physician1396066593
- Leena Jha, MDEndocrinology, Diabetes & Metabolism Physician1417073131
Verify Michael Joseph Horwath in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health Professions
Search for license 0101037920Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 81.3 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).
Michael Joseph Horwath among 264 endocrinology, diabetes & metabolism physician records in Virginia
Michael Joseph Horwath, MD is one of 264 endocrinology, diabetes & metabolism physician records with a practice address in Virginia. 84% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 61% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileNo · 71% of these records are
- Record last updated2021 · 54% 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 Virginia 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 Virginia
There are 264 endocrinology, diabetes & metabolism physician records in Virginia.
All 264 in Virginia → Every provider in Alexandria → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Shivam Champaneri, MDAlexandria, VA 223101932321981
- Oksana Davydov, MDAlexandria, VA 223101740568039
- Tahira Habib, M.D.Alexandria, VA 223101386781870
- Mehreen Husain, M.D.Alexandria, VA 223101396066593
- Sarasi Jayaratne, DOAlexandria, VA 223101336600329
- Leena Jha, MDAlexandria, VA 223101417073131
- Howard Lando, MDAlexandria, VA 223061699702860
- Aytan Mammadova, M.DAlexandria, VA 223061437503976
Common questions
What is Michael Joseph Horwath, MD's NPI number?
Michael Joseph Horwath, MD's National Provider Identifier (NPI) is 1861427932, issued on Jul 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael Joseph Horwath, MD located?
The NPPES record lists a practice address at 6355 Walker LN Ste 405, Alexandria, VA, 22310. Phone: (703) 719-6715. Providers update this record themselves, so call before visiting.
How can I verify Michael Joseph Horwath, MD's license?
NPPES lists Virginia license number 0101037920, as entered by the provider. Search the Virginia Department of Health Professions at https://dhp.virginiainteractive.org/lookup/index. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Michael Joseph Horwath, MD's MIPS final score?
The 2023 MIPS final score is 81.3 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.