Rosemary K and Timothy J Clay DMD
533 Main St, Wilmington, DE 19804
The registry record
- NPI
- 1851439111
- Registered as
- Type-2 organization (not an individual dentist's personal NPI)
- Dental categories
- Pediatric, General
- Taxonomy codes
- 1223G0001X (General practice dentistry); 1223P0221X (Pediatric dentistry)
- Practice location
- 533 Main St, Wilmington, DE 19804
- Telephone
- (302) 998-0500
- NPI issued
- 1 February 2007 (19 years ago)
- Record updated
- 11 September 2025 (0 years ago)
- NPI status
- NPI active as reported by CMS 2026-08
- Metro area
- Philadelphia-Camden-Wilmington, PA-NJ-DE-MD (metropolitan area, New Castle County)
- State
- Delaware (315 registered practices)
- Sibling NPIs
- Emerald Dental (1851278329); Emerald Dental (1184262495)
- Map position
- Census address match at street level
- Snapshot
- NPPES data dissemination file, 10 August 2026
What the record tells you
Rosemary K and Timothy J Clay DMD is an NPI registry record for a dental organization at 533 Main St in Wilmington, Delaware 19804. CMS issued NPI 1851439111 on 1 February 2007, and the practice last updated its own entry on 11 September 2025. That is recent, so the contact details are likely to be current.
It is registered under 2 dental taxonomy codes: General practice dentistry (1223G0001X), Pediatric dentistry (1223P0221X). That puts it in 2 categories on this site, led by pediatric dentistry. A practice that registers more than one category is telling CMS it does more than one kind of dental work at this address, which is why it has a page here rather than a row. No other address in the registry carries this name, though a practice trading under a chain brand often registers each office under its own legal name, so check the brand as well. 2 further NPIs are registered to what looks like the same business at this address (Emerald Dental, NPI 1851278329 and Emerald Dental, NPI 1184262495); they are covered by this page rather than given pages of their own.
Wilmington holds 139 registered dental practices inside the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD area, which has 227 in total on the Delaware side and ranks 1st in the state. 12 of the Wilmington records also register pediatric dentistry, so this is one of several local options in that category. Across the metro the mix runs general dentistry 66.5%, dental clinic or center 11.5%, pediatric dentistry 7.5%. The closest other registered practices are Andina Dental Studio INC (0.3 miles, Wilmington), Gregg Fink D.M.D., INC. (1.1 miles, Newark) and Woodmill Dental LLC (1.2 miles, Wilmington), with 2 more inside 1.2 miles.
On our figures a routine adult cleaning in Delaware runs $115 to $170 cash and scaling and root planing $185 to $285 per quadrant, against a US average of $125. This practice's own prices are not in the registry and never will be: NPPES holds identifiers, not fees. Call (302) 998-0500 and ask for the cash price on code D1110, whether the exam and X-rays are included, and whether they run a membership plan if you have no insurance.
Nearest alternatives
The 5 closest registered dental practices to 533 Main St, straight-line distance. Rows without a link are listed on their metro page rather than having one of their own.
| Practice | City | Distance | Categories | Phone on the record |
|---|---|---|---|---|
| Andina Dental Studio INC | Wilmington, DE | 0.3 mi | Dental clinic | (302) 543-5987 |
| Gregg Fink D.M.D., INC. | Newark, DE | 1.1 mi | General | (302) 998-6300 |
| Woodmill Dental LLC | Wilmington, DE | 1.2 mi | General | (302) 998-8588 |
| Michael A Poleck DDS PA | Wilmington, DE | 1.2 mi | General | (302) 999-0111 |
| Nathan B. Poleck DMD LLC | Wilmington, DE | 1.2 mi | General | (302) 750-0308 |
The benchmark to hold a quote from Rosemary K and Timothy J Clay DMD against. All 50 states compared.
What to ask when you call
- The cash price for D1110, a routine adult cleaning, and whether the exam (D0120) and X-rays (D0274) are inside or outside that number.
- Whether you need scaling and root planing before a routine clean, and the per-quadrant price for D4341 or D4342 if so.
- Whether they run an in-house membership plan, and what it covers against what it costs a year.
- Whether they are taking new patients and how far out the next hygiene appointment is.
- The practice license, with your state dental board. An NPI is a billing identifier and proves nothing about licensing.
CMS NPPES NPI data file, August 2026, snapshot 10 August 2026. US federal public data (FOIA-disclosable, no charge). CMS NPI files. NPI registry records, status as reported by CMS in the August 2026 data dissemination file. NPPES is an identifier registry, not a license register: an NPI does not validate that a practice is licensed, accredited or currently open. Practices maintain their own NPPES entries. Every page shows the date the record was last updated; addresses and phone numbers are as self-reported and are not verified by us. This page describes a registry record. It is not a review, an endorsement or a check on Rosemary K and Timothy J Clay DMD.
Price figures are our own, last verified April 2026. State averages are our estimates compiled from FAIR Health regional cost data and CMS Medicare fee schedules; the ADA discontinued its national Survey of Dental Fees in 2023, so no national fee survey exists. Treat them as a starting point and call two or three offices for an actual quote.