NPPES file of Aug 9, 2026

Arthur Joseph Horowitz, MD

Obstetrics & Gynecology Physician · Hopkins, MN

Arthur Joseph Horowitz, MD is an obstetrics & gynecology physician with a practice address in Hopkins, Minnesota, and NPI 1407329139, issued on Jan 4, 2019. Check the license (Minnesota 18599, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1407329139
Name
Arthur Joseph Horowitz
Credential
MD
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
18599 MN
Self-reported in NPPES; status is on the state search
Practice location
830 Edgemoor Dr, Hopkins, MN 55305
Phone
(952) 935-2129
Enumerated
Jan 4, 2019
Record last updated
Jan 4, 2019 (not updated in 7 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Arthur Joseph Horowitz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMinnesota Board of Medical Practice
    Search for license 18599
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Minnesota license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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92% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024

13 Medicare Part D claims, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Arthur Horowitz13
  2. Specialty average165

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.

Arthur Joseph Horowitz among 878 obstetrics & gynecology physician records in Minnesota

Arthur Joseph Horowitz, MD is one of 878 obstetrics & gynecology physician records with a practice address in Minnesota. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 90% of them.

  • NPI issued2019 · 90% of these records are older, 8% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileNo · 65% of these records are
  • Record last updated2019 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Obstetrics & Gynecology Physician providers in Minnesota

There are 878 obstetrics & gynecology physician records in Minnesota.

The 8 obstetrics & gynecology physician records with the nearest ZIP codes

  1. Kathryn Babich, M.D.Minnetonka, MN 553051477530970
  2. Matthew Bigos, M.D.Minnetonka, MN 553051922341791
  3. Jill Garnier, MDMinnetonka, MN 553051780848317
  4. Wesley Grootwassink, M.D.Minnetonka, MN 553051952307639
  5. Lynn Hagedorn, MDMinnetonka, MN 553051962488189
  6. Laura HansonMinnetonka, MN 553051568872547
  7. Terri Johnson, M.D.Minnetonka, MN 553051225035710
  8. Shannon Klingman, M.D.Minnetonka, MN 553051992701593

Common questions

What is Arthur Joseph Horowitz, MD's NPI number?

Arthur Joseph Horowitz, MD's National Provider Identifier (NPI) is 1407329139, issued on Jan 4, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Arthur Joseph Horowitz, MD located?

The NPPES record lists a practice address at 830 Edgemoor Dr, Hopkins, MN, 55305. Phone: (952) 935-2129. Providers update this record themselves, so call before visiting.

How can I verify Arthur Joseph Horowitz, MD's license?

NPPES lists Minnesota license number 18599, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Arthur Joseph Horowitz, MD prescribe under Medicare Part D?

In 2024, Arthur Joseph Horowitz, MD had 13 Medicare Part D claims; the average among obstetrics & gynecology physician prescribers was 165. 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.