NPPES file of Aug 9, 2026

Steven J. Grondalski, O.D.

Optometrist · Saint Louis, MO

Steven J. Grondalski, O.D. is an optometrist with a practice address in Saint Louis, Missouri, and NPI 1164509071, issued on Nov 1, 2006. Check the license (Missouri TO 2788, as entered in NPPES) with the Missouri board that licenses this profession; 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
1164509071
Name
Steven J. Grondalski
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
License number
TO 2788 MO
Self-reported in NPPES; status is on the state search
Practice location
915 N Grand Blvd, Saint Louis, MO 63106
Phone
(314) 652-4100
Enumerated
Nov 1, 2006
Record last updated
Jul 8, 2007 (not updated in 19 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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Also registered at 915 N Grand Blvd

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

  1. Nagla Abdelmalek, M.D.Emergency Medicine Physician1003847591
  2. Stephanie AdamsRegistered Nurse1003755810
  3. Jessica Addai, RNRegistered Nurse1225475171
  4. Bernadette Addison-TannerCase Management Registered Nurse1750143566
  5. Oluwafunmilayo Adebayo-Adonis, MDCritical Care Medicine (Anesthesiology) Physician1437593613
  6. Oluwatoyin Adegboyega, FNPFamily Nurse Practitioner1932724614

Verify Steven J. Grondalski in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Missouri board licenses this profession
    Search for license TO 2788
    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
Find the Missouri license search

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67% fewer Medicare Part D claims than the average optometrist in 2024

91 Medicare Part D claims for 28 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 66% of claims.

  1. Steven Grondalski91
  2. Specialty average277

Most prescribed

  1. Latanoprost55 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.

Steven J. Grondalski among 1,242 optometrist records in Missouri

Steven J. Grondalski, O.D. is one of 1,242 optometrist records with a practice address in Missouri. 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 2006, is newer than 15% of them.

  • NPI issued2006 · 15% of these records are older, 52% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileNo · 62% of these records are
  • Record last updated2007 · 67% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Optometrist providers in Missouri

There are 1,242 optometrist records in Missouri.

The 8 optometrist records with the nearest ZIP codes

  1. Kasey Chan, ODSaint Louis, MO 631061841038601
  2. Mary Chivetta, ODSaint Louis, MO 631061508418245
  3. Courtney Duberry, ODSaint Louis, MO 631061821602756
  4. Jessica Hanson, O.D.Saint Louis, MO 631061689152530
  5. Samuel Killion, ODSaint Louis, MO 631061285366310
  6. Ramya NatarajanSaint Louis, MO 631061073017497
  7. My-Chau Nguyen, ODSaint Louis, MO 631061114400546
  8. Allison Schafers, O.D.Saint Louis, MO 631061700238045

Common questions

What is Steven J. Grondalski, O.D.'s NPI number?

Steven J. Grondalski, O.D.'s National Provider Identifier (NPI) is 1164509071, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Steven J. Grondalski, O.D. located?

The NPPES record lists a practice address at 915 N Grand Blvd, Saint Louis, MO, 63106. Phone: (314) 652-4100. Providers update this record themselves, so call before visiting.

How can I verify Steven J. Grondalski, O.D.'s license?

NPPES lists Missouri license number TO 2788, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.

How much does Steven J. Grondalski, O.D. prescribe under Medicare Part D?

In 2024, Steven J. Grondalski, O.D. had 91 Medicare Part D claims for 28 beneficiaries; the average among optometrist prescribers was 277. 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.