NPPES file of Aug 9, 2026

Andrea C. So, OD

Optometrist · Madison, WI

Andrea C. So, OD is an optometrist with a practice address in Madison, Wisconsin, and NPI 1831531557, issued on Jul 23, 2013. Check the license (Wisconsin 3316-035, as entered in NPPES) with the Wisconsin 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
1831531557
Name
Andrea C. So
Credential
OD
Primary taxonomy
Optometrist 152W00000X
License numbers
3316-035 WI
14890 CA
Self-reported in NPPES; status is on the state search
Practice location
1025 Regent St, Madison, WI 53715
Phone
(608) 282-2000
Enumerated
Jul 23, 2013
Record last updated
Feb 25, 2019 (not updated in 7 years: call before relying on the address or phone)
Fax
(608) 282-2172
Medicaid ID
1831531557 WI
Medicare enrollment
Enrolled (PECOS I20150127001887); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1025 Regent St

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

  1. Julia Agapov, DOOphthalmology Physician1861428153
  2. James Bell, MDOphthalmology Physician1376860668
  3. Rachel Bushey, ODOptometrist1447949482
  4. Sheila Carlson, MDAnesthesiology Physician1407805138
  5. Christopher Croasdale, MDOphthalmology Physician1770520843
  6. Neil Farbman, MDOphthalmology Physician1861751364

Verify Andrea C. So in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
    Search for license 3316-035
    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 Wisconsin license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Industry payments in 2024: $90.31

4 payments; by number, the most common kind was food and beverage; the largest payer was Dompe US, Inc. The 34,453 providers of this specialty with any payment received $769.99 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Andrea So$90.31
  2. Specialty average$769.99

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Marshall B Ketchum UniversityAnaheim, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Andrea C. So among 1,161 optometrist records in Wisconsin

Andrea C. So, OD is one of 1,161 optometrist records with a practice address in Wisconsin. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 69% of them.

  • NPI issued2013 · 69% of these records are older, 28% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 65% of these records are
  • Graduated2013 · median 2008 among the 752 with a school on file
  • Record last updated2019 · 62% 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 Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Optometrist providers in Wisconsin

There are 1,161 optometrist records in Wisconsin.

The 8 optometrist records with the nearest ZIP codes

  1. Rachel Bushey, ODMadison, WI 537151447949482
  2. Nathaniel Harkins, O.D.Madison, WI 537151396032819
  3. Robert Heyden, ODMadison, WI 537151316903628
  4. Shang-Yun Huang, ODMadison, WI 537151164217147
  5. Richard Martin, ODMadison, WI 537151215516646
  6. Kelsey Rickels, O.D.Madison, WI 537151194988618
  7. Lisa Zarwell, ODMadison, WI 537151720044563
  8. Todd Zarwell, ODMadison, WI 537151619933488

Common questions

What is Andrea C. So, OD's NPI number?

Andrea C. So, OD's National Provider Identifier (NPI) is 1831531557, issued on Jul 23, 2013. An NPI identifies a provider in billing; it is not a license.

Where is Andrea C. So, OD located?

The NPPES record lists a practice address at 1025 Regent St, Madison, WI, 53715. Phone: (608) 282-2000. Providers update this record themselves, so call before visiting.

How can I verify Andrea C. So, OD's license?

NPPES lists Wisconsin license number 3316-035, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity 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.