NPPES file of Aug 9, 2026

Louis B. Cantor, MD

Glaucoma Specialist (Ophthalmology) Physician · Indianapolis, IN

Louis B. Cantor, MD is a glaucoma specialist (ophthalmology) physician with a practice address in Indianapolis, Indiana, and NPI 1487655783, issued on Aug 9, 2005. Check the license (Indiana 01029807A, as entered in NPPES) on the Medical Licensing Board of Indiana; 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
1487655783
Name
Louis B. Cantor
Credential
MD
Primary taxonomy
Glaucoma Specialist (Ophthalmology) Physician 207WX0009X
License number
01029807A IN
Self-reported in NPPES; status is on the state search
Practice location
1160 W Michigan St, Indianapolis, IN 46202
Phone
(317) 944-2020
Enumerated
Aug 9, 2005
Record last updated
Feb 8, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicaid ID
100354010A IN
Medicare enrollment
Enrolled (PECOS I20070612000662); accepts Medicare assignment
Medical or professional school
Indiana University School Of Medicine, 1980
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1160 W Michigan St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Luis Barrientos, MDStudent in an Organized Health Care Education/Training Program1134913304
  2. Ella BellflowerStudent in an Organized Health Care Education/Training Program1841124997
  3. Brett Breshears, DOOphthalmology Physician1467018945
  4. David Camp, MDOphthalmology Physician1508328956
  5. Jennifer Eikenberry, M.D.Ophthalmology Physician1891998027
  6. Ali Elobous, MDStudent in an Organized Health Care Education/Training Program1780413542

Verify Louis B. Cantor in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Licensing Board of Indiana
    Search for license 01029807A
    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 Indiana license search

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50% fewer Medicare Part D claims than the average glaucoma specialist (ophthalmology) physician in 2024

1,544 Medicare Part D claims for 248 beneficiaries, against an average of 3,060 among the 430 providers of this specialty who prescribed in Part D. Brand-name drugs were 43% of claims.

  1. Louis Cantor1,544
  2. Specialty average3,060

Most prescribed

  1. Latanoprost322 claims
  2. Timolol Maleate189 claims
  3. Dorzolamide-Timolol142 claims
  4. Lumigan124 claims
  5. Brimonidine Tartrate106 claims
  6. Prednisolone Acetate103 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: $2,754.96

8 payments; by number, the most common kind was food and beverage; the largest payer was Sight Sciences, Inc. The 391 providers of this specialty with any payment received $5,284.60 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Louis Cantor$2,754.96
  2. Specialty average$5,284.60

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

  1. IU Health Medical Group LLCIndianapolis, IN
  2. University Family Physicians, Inc.Carmel, IN

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Glaucoma Specialist (Ophthalmology) Physician providers in Indiana

There are 5 glaucoma specialist (ophthalmology) physician records in Indiana.

The 4 glaucoma specialist (ophthalmology) physician records with the nearest ZIP codes

  1. Mehak Aziz, MDIndianapolis, IN 462021619363819
  2. Hemang Patel, M.D.Indianapolis, IN 462901710911219
  3. Narges Zandvakil, MDCarmel, IN 462901598446924
  4. Rana Torabi, MDMunster, IN 463211891254785

Common questions

What is Louis B. Cantor, MD's NPI number?

Louis B. Cantor, MD's National Provider Identifier (NPI) is 1487655783, issued on Aug 9, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Louis B. Cantor, MD located?

The NPPES record lists a practice address at 1160 W Michigan St, Indianapolis, IN, 46202. Phone: (317) 944-2020. Providers update this record themselves, so call before visiting.

How can I verify Louis B. Cantor, MD's license?

NPPES lists Indiana license number 01029807A, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Louis B. Cantor, MD prescribe under Medicare Part D?

In 2024, Louis B. Cantor, MD had 1,544 Medicare Part D claims for 248 beneficiaries; the average among glaucoma specialist (ophthalmology) physician prescribers was 3,060. 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.