Sara Serfoss, OD
Sara Serfoss, OD is a provider specialising in Occupational Vision Optometrist in Aberdeen, SD, registered under NPI 1508435652.
Getting there
The practice address on file is 310 8TH AVE NW STE 503, Aberdeen, SD 57401. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| PENDING | SD | Occupational Vision Optometrist primary |
This provider holds licence PENDING issued in SD. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Optometry
- PAC ID
- 3274936711
- Enrollment ID
- I20210721003984
Medicare enrolment is recorded as approved under the provider type Practitioner - Optometry. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Occupational Vision covers
Optometrists who work in Occupational Vision, the branch of environmental optometry, consider all aspects of the relationship between work and vision, visual performances, eye safety, and health. NUCC Health Care Provider Taxonomy, code 152WX0102X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1508435652 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 23, 2021 |
| Last updated | Jun 23, 2021 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | OD |
| Practice address |
310 8TH AVE NW STE 503 Aberdeen, SD 57401 (605) 225-2020 Fax (605) 725-2614 |
| Mailing address |
310 8TH AVE NW Aberdeen, SD 57401 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 5 | 0 | 8 | 4 | 3 | 5 | 6 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 5 | 0 | 8 | 8 | 3 | 1 | 6 | 1 |
Sum = 58 · next multiple of 10 = 60 · check digit = 2 · actual last digit = 2
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.