Colin Sigmund, OD
NPI 1811568850 · Optometrist · Green Bay, WI
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Colin Sigmund, OD is a Optometrist provider in Green Bay, WI (NPI 1811568850).
Provider details
- NPI number
- 1811568850
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 3691 (WI)
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
4 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
201 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 | 65 | $86 |
| Established Patient Complete Exam of Visual System92014 | 51 | $119 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 21 | $151 |
| New Patient Complete Exam of Visual System92004 | 20 | $142 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 18 | $121 |
| Imaging of Retina92134 | 14 |
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 | 70 | 18 |
| Timolol Maleate | 36 | 14 |
| Prednisolone Acetate | 32 | 19 |
| Brimonidine Tartrate | 28 | — |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 25 | — |
| Varenicline Tartratebrand: Tyrvaya | 13 | — |
| Ofloxacin | 11 | — |
| Lifitegrast |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$301 across 9 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
- 2021-07-09
- Last updated
- 2021-07-09
- Certified
- 2021-07-09
Frequently asked questions
- What is Colin Sigmund's NPI number?
- Colin Sigmund's National Provider Identifier (NPI) is 1811568850, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Colin Sigmund's specialty?
- Colin Sigmund is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Colin Sigmund located?
- Colin Sigmund's practice location on file with NPPES is 1543 Park Pl Ste 400, Green Bay, WI 54304-1970.
- What is Colin Sigmund's phone number?
- The practice phone number listed in the NPPES registry for Colin Sigmund is (920) 497-0100.
- Does Colin Sigmund accept Medicare?
- Colin Sigmund is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Colin Sigmund's NPI active?
- Yes — Colin Sigmund's NPI (1811568850) is active in the NPPES registry as of the last update on 2021-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.