Riddell Dental
Registered legal name: Frederick D. Mesloh PC
33 Riddell St, Greenfield, MA 01301
The registry record
- NPI
- 1386830883
- Registered as
- Type-2 organization (not an individual dentist's personal NPI)
- Dental categories
- General, Periodontics
- Taxonomy codes
- 1223G0001X (General practice dentistry); 1223P0300X (Periodontics)
- Practice location
- 33 Riddell St, Greenfield, MA 01301
- Telephone
- (413) 774-7996
- NPI issued
- 18 September 2007 (18 years ago)
- Record updated
- 18 September 2007 (18 years ago)
- NPI status
- NPI active as reported by CMS 2026-08
- Metro area
- Greenfield, MA (micropolitan area, Franklin County)
- State
- Massachusetts (4,557 registered practices)
- Same address
- River Valley Periodontics
- Map position
- Census address match at street level
- Snapshot
- NPPES data dissemination file, 10 August 2026
What the record tells you
Riddell Dental, the trading name of Frederick D. Mesloh PC, is an NPI registry record for a dental organization at 33 Riddell St in Greenfield, Massachusetts 01301. CMS issued NPI 1386830883 on 18 September 2007, and the practice last updated its own entry on 18 September 2007. That was 18 years ago, so treat the phone number and the suite number as unconfirmed until someone answers.
It is registered under 2 dental taxonomy codes: General practice dentistry (1223G0001X), Periodontics (1223P0300X). That puts it in 2 categories on this site, led by general 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. One other dental record shares the street address: River Valley Periodontics.
Greenfield holds 15 registered dental practices inside the Greenfield, MA area, which has 30 in total on the Massachusetts side and ranks 8th in the state. 7 of the Greenfield records also register general dentistry, so this is one of several local options in that category. Across the metro the mix runs general dentistry 60%, dental clinic or center 26.7%, orthodontics 6.7%. The closest other registered practices are River Valley Periodontics (0 miles, Greenfield), Timothy C. Fish (0.1 miles, Greenfield) and Fish Family Dentistry, LLC (0.1 miles, Greenfield), with 2 more inside 0.3 miles.
On our figures a routine adult cleaning in Massachusetts runs $145 to $225 cash and scaling and root planing $215 to $350 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 (413) 774-7996 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 33 Riddell 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 |
|---|---|---|---|---|
| River Valley Periodontics | Greenfield, MA | 0 mi | Periodontics | (413) 774-7910 |
| Timothy C. Fish | Greenfield, MA | 0.1 mi | General | (413) 773-3955 |
| Fish Family Dentistry, LLC | Greenfield, MA | 0.1 mi | General | (413) 773-3955 |
| Community Health Center of Franklin County | Greenfield, MA | 0.2 mi | Dental clinic | (413) 772-0311 |
| Greenfield Dental Associates | Greenfield, MA | 0.3 mi | General | (413) 774-2871 |
The benchmark to hold a quote from Riddell Dental 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 Riddell Dental.
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.