Robert Dirksen, O.D.
NPI 1174669899 · Optometrist · San Luis Obispo, CA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Dirksen, O.D. is a Optometrist provider in San Luis Obispo, CA (NPI 1174669899).
Provider details
- NPI number
- 1174669899
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 12172 (CA)
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
19 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
1,082 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 | 230 | $133 |
| Established Patient Complete Exam of Visual System92014 | 214 | $135 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 150 | $94 |
| Established Patient Problem Focused Exam of Visual System92012 | 125 | $96 |
| Photography of the Retina92250 | 90 | $39 |
| Imaging of Optic Nerve92133 | 85 | $20 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 198 | 52 |
| Neomycin/Polymyxin B/Dexamethabrand: Neomycin-Polymyxin-Dexameth | 155 | 112 |
| Lifitegrastbrand: Xiidra | 62 | 19 |
| Timolol Maleate | 55 | 14 |
| Perfluorohexyloctane/Pfbrand: Miebo | 44 | 15 |
| Cyclosporinebrand: Restasis | 40 | 13 |
| Cyclosporine | 39 | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$208 across 5 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
- 2007-01-29
- Last updated
- 2017-05-05
Frequently asked questions
- What is Robert Dirksen's NPI number?
- Robert Dirksen's National Provider Identifier (NPI) is 1174669899, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Dirksen's specialty?
- Robert Dirksen is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Robert Dirksen located?
- Robert Dirksen's practice location on file with NPPES is 3855 Broad Street, San Luis Obispo, CA 93401.
- What is Robert Dirksen's phone number?
- The practice phone number listed in the NPPES registry for Robert Dirksen is (805) 545-7881.
- Does Robert Dirksen accept Medicare?
- Robert Dirksen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Dirksen's NPI active?
- Yes — Robert Dirksen's NPI (1174669899) is active in the NPPES registry as of the last update on 2017-05-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.