Larry Greidinger, OD
NPI 1649278839 · Optometrist · Lawrenceville, NJ
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Larry Greidinger, OD is a Optometrist provider in Lawrenceville, NJ (NPI 1649278839).
Provider details
- NPI number
- 1649278839
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Male
- Sole proprietor
- No
- License
- 27OA00396800 (NJ)
Specialties & taxonomies
Eye and Vision Services Providers
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
474 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 178 | $94 |
| Established Patient Complete Exam of Visual System92014 | 155 | $133 |
| Imaging of Optic Nerve92133 | 47 | $38 |
| Exam of Visual Field With Extended Testing92083 | 36 | $68 |
| Photography of the Retina92250 | 16 | $39 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 15 | $134 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 283 | 75 |
| Travoprost | 77 | 14 |
| Brimonidine Tartrate | 72 | 17 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 63 | 26 |
| Timolol Maleate | 30 | — |
| Cyclosporine | 28 | — |
| Brinzolamide/Brimonidine Tartbrand: Simbrinza | 27 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$57 across 3 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
- 2005-07-12
- Last updated
- 2024-12-18
- Certified
- 2024-12-18
Frequently asked questions
- What is Larry Greidinger's NPI number?
- Larry Greidinger's National Provider Identifier (NPI) is 1649278839, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Larry Greidinger's specialty?
- Larry Greidinger is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Larry Greidinger located?
- Larry Greidinger's practice location on file with NPPES is 4 Princess Rd, Lawrenceville, NJ 08648-2322.
- What is Larry Greidinger's phone number?
- The practice phone number listed in the NPPES registry for Larry Greidinger is (609) 219-9000.
- Does Larry Greidinger accept Medicare?
- Larry Greidinger is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Larry Greidinger's NPI active?
- Yes — Larry Greidinger's NPI (1649278839) is active in the NPPES registry as of the last update on 2024-12-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.