Deen-Gross Eye Centers, 303 W 89TH Ave, Merrillville: NPI Registry Record
What the registry record says
- NPI number
- 1073646089
- Legal business name
- David G Gross DO, PC
- Registered trading name
- Deen-Gross Eye Centers
- Primary registered specialty
- Optometrist (152W00000X)
- Other registered specialties
- Ophthalmology
- Practice location
- 303 W 89TH Ave, Suite E4
Merrillville, IN 46410-6294 - Phone on the record
- (219) 769-8989
- NPI issued
- March 13, 2007
- Record last updated by the practice
- September 11, 2025
- Registry status
- NPI registry record, active as reported by CMS August 2026
- Metro area
- Chicago-Naperville-Elgin, IL-IN
- County
- Lake County
- Location precision
- Street address matched by the US Census geocoder
Reading this record
The practice bills under the legal name David G Gross DO, PC and registered Deen-Gross Eye Centers as its trading name, so an insurance statement may show a name that does not match the sign on the door. Beyond the primary code the record carries Ophthalmology, which is the registry's own signal that the practice covers more than routine work. The entry was refreshed in September 2025, putting it among the 20 of 105 Chicago-Naperville-Elgin records updated in 2024 or later, so the contact details are more likely to be current than most of this metro.
For local context: Merrillville holds 21 registered eye care practices in this snapshot, 15 of them optometry and 6 ophthalmology, in ZIP codes including 46410. 8 of them took an NPI before this practice did. The closest is Zale Eye Center in Merrillville, 0.4 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 Indiana boards hold the licensing record, and the practice itself is the only source for what it charges today.
Nearest registered practices
190 other registered eye care practices sit within 25 miles of this address, a radius that does not stop at the metro boundary. Inside the Chicago-Naperville-Elgin metro itself there are 105, 20 of them elsewhere in Merrillville. The closest 5 are below, measured straight line between registered addresses.
| Practice | City | Registered as | Distance | Phone on record |
|---|---|---|---|---|
| Zale Eye Center | Merrillville | Ophthalmology | 0.4 mi | (219) 736-0488 |
| Merrillville Eye Clinic, Inc | Merrillville | Ophthalmology | 0.4 mi | (219) 769-3555 |
| Retina Associates, PC | Merrillville | Ophthalmology | 0.4 mi | (219) 769-9022 |
| Deschamps Eye Care PC | Merrillville | Ophthalmology | 0.4 mi | (219) 736-2200 |
| Dr. Tavel Family Eye Care | Merrillville | Optometry | 0.9 mi | (219) 387-0049 |
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 Deen-Gross Eye 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 105 practices on the Chicago-Naperville-Elgin page give you the full local field to call around.