John Mcgreal, OD
NPI 1689661886 · Optometrist · Saint Louis, MO
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Mcgreal, OD is a Optometrist provider in Saint Louis, MO (NPI 1689661886).
Provider details
- NPI number
- 1689661886
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Male
- License
- T03182 (MO)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
272 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 90 | $123 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 81 | $87 |
| Imaging of Optic Nerve92133 | 36 | $34 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 23 | $107 |
| Exam of Visual Field With Extended Testing92083 | 21 | $60 |
| Imaging of Retina92134 | 21 | $38 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 214 | 49 |
| Timolol Maleate | 66 | 18 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 35 | — |
| Bimatoprostbrand: Lumigan | 24 | — |
| Prednisolone Acetate | 18 | 15 |
| Cyclosporinebrand: Restasis | 18 | — |
| Brinzolamide/Brimonidine Tartbrand: Simbrinza | 15 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$30,750 across 33 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-10-03
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Mcgreal's NPI number?
- John Mcgreal's National Provider Identifier (NPI) is 1689661886, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Mcgreal's specialty?
- John Mcgreal is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is John Mcgreal located?
- John Mcgreal's practice location on file with NPPES is 11710 Old Ballas Rd, Saint Louis, MO 63141-7076.
- What is John Mcgreal's phone number?
- The practice phone number listed in the NPPES registry for John Mcgreal is (314) 569-2020.
- Does John Mcgreal accept Medicare?
- John Mcgreal is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Mcgreal's NPI active?
- Yes — John Mcgreal's NPI (1689661886) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.