Ronald N. Horowitz, MD
Anatomic Pathology & Clinical Pathology Physician · East Lansing, MI
Ronald N. Horowitz, MD is an anatomic pathology & clinical pathology physician with a practice address in East Lansing, Michigan, and NPI 1720048739, issued on Mar 24, 2006. Check the license (Michigan 040243, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Ronald N. Horowitz
- Credential
- MD
- Primary taxonomy
- Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
- License number
- 040243 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1451 Stanlake Dr, East Lansing, MI 48823
- Phone
- (517) 332-5050
- Enumerated
- Mar 24, 2006
- Record last updated
- Aug 14, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (517) 332-8011
- Medicaid ID
- 3182130 MI
- Entity
- Type 1 · individual
8 nearest anatomic pathology & clinical pathology physician records → All 561 in Michigan → Look up another NPI →
Verify Ronald N. Horowitz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 040243Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average anatomic pathology & clinical pathology physician in 2024
17 Medicare Part D claims, against an average of 192 among the 401 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.
Ronald N. Horowitz among 561 anatomic pathology & clinical pathology physician records in Michigan
Ronald N. Horowitz, MD is one of 561 anatomic pathology & clinical pathology physician records with a practice address in Michigan. 61% 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, 52% newer
- In a Medicare fileYes · 61% of these records are
- In the CMS Doctors and Clinicians fileNo · 55% of these records are
- Record last updated2013 · 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 207ZP0102X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anatomic Pathology & Clinical Pathology Physician providers in Michigan
There are 561 anatomic pathology & clinical pathology physician records in Michigan.
All 561 in Michigan → Every provider in East Lansing → Anatomic Pathology & Clinical Pathology Physician nationwide →
The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes
- Gabriel Almeida, M.D.Alma, MI 488011386736361
- Maged Hanna, M.D.Alma, MI 488011356537740
- Kusum Kumar, MDOkemos, MI 488641942552336
- Jaya Sankaran, MDTawas City, MI 487631821071796
- Neil Caliman, MDLansing, MI 489101316041692
- Mehboob Fatteh, MDLansing, MI 489101205928702
- John Jones, MDLansing, MI 489101689766180
- Wilhelm Lawrence, MDLansing, MI 489101942304225
Common questions
What is Ronald N. Horowitz, MD's NPI number?
Ronald N. Horowitz, MD's National Provider Identifier (NPI) is 1720048739, issued on Mar 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ronald N. Horowitz, MD located?
The NPPES record lists a practice address at 1451 Stanlake Dr, East Lansing, MI, 48823. Phone: (517) 332-5050. Providers update this record themselves, so call before visiting.
How can I verify Ronald N. Horowitz, MD's license?
NPPES lists Michigan license number 040243, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ronald N. Horowitz, MD prescribe under Medicare Part D?
In 2024, Ronald N. Horowitz, MD had 17 Medicare Part D claims; the average among anatomic pathology & clinical pathology physician prescribers was 192. 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.