Sigma Eyehealth Centers, Marion: NPI Registry Record and Eye Exam Cost Context
What the registry record says
- NPI number
- 1578621462
- Legal business name
- Sigma Eye, P.C.
- Registered trading name
- Sigma Eyehealth Centers
- Primary registered specialty
- Optometrist (152W00000X)
- Non eye care codes on the record
- 1 additional taxonomy code outside optometry and ophthalmology
- Practice location
- 985 31ST St
Marion, IA 52302-3748 - Phone on the record
- (319) 377-9735
- NPI issued
- December 5, 2006
- Record last updated by the practice
- October 30, 2025
- Registry status
- NPI registry record, active as reported by CMS August 2026
- Metro area
- Cedar Rapids, IA
- County
- Linn County
- Locations under this name
- 3 registered nationally
- Duplicate registrations at this address
- 1 additional NPI for the same name and address, folded into this record
- Location precision
- Street address matched by the US Census geocoder
Reading this record
The practice bills under the legal name Sigma Eye, P.C. and registered Sigma Eyehealth Centers as its trading name, so an insurance statement may show a name that does not match the sign on the door. 3 locations nationally are registered under the same name, so pricing and policies are likely to be set at group level rather than at this office. The entry was refreshed in October 2025, putting it among the 6 of 40 Cedar Rapids records updated in 2024 or later, so the contact details are more likely to be current than most of this metro.
For local context: Marion holds 4 registered eye care practices in this snapshot, 4 of them optometry and 0 ophthalmology, in ZIP codes including 52302. 1 of them took an NPI before this practice did. The closest is Iowa Eye Care PC in Marion, 1.5 miles away.
None of this is a licensing check. CMS issues an NPI so a provider can be identified in billing transactions, and states plainly that issuance does not ensure or validate that the holder is licensed or credentialed. The Iowa boards hold the licensing record, and the practice itself is the only source for what it charges today.
Nearest registered practices
51 other registered eye care practices sit within 25 miles of this address, a radius that does not stop at the metro boundary. Inside the Cedar Rapids metro itself there are 40, 3 of them elsewhere in Marion. The closest 5 are below, measured straight line between registered addresses.
| Practice | City | Registered as | Distance | Phone on record |
|---|---|---|---|---|
| Iowa Eye Care PC | Marion | Optometry | 1.5 mi | (319) 377-2222 |
| Linn County Eye Care PLC | Marion | Optometry | 1.5 mi | (319) 377-2222 |
| Augustin Eye Care, PLC | Cedar Rapids | Optometry | 2.3 mi | (319) 320-6473 |
| Insight Vision Inc. | Marion | Optometry | 2.3 mi | (319) 377-5343 |
| Clear Vision Eyecare LLC | Cedar Rapids | Optometry | 2.6 mi | (319) 395-7692 |
Distances are straight line between registered practice locations, not driving distance. Records placed at a ZIP centroid rather than a matched street address are excluded from this comparison.
What to expect to pay at an optometry practice like this
The NPI registry holds no prices, so nothing here is a quote from Sigma Eyehealth Centers. Based on this site's own price research, an independent optometry practice typically charges $120 to $200 for an exam without insurance, against a national average of about $136 and roughly $25 once a vision plan pays its share.
Ask two things when you call: whether the quoted fee includes the refraction, and what a contact lens fitting adds if you wear lenses, since that takes a visit to $150 to $370. A comprehensive exam is $100 to $250. If price is the deciding factor, the 40 practices on the Cedar Rapids page give you the full local field to call around.