Roots and Gums
Registered legal name: Steve and Harley Williams DDS PC
999 E Stanley Blvd Ste C, Livermore, CA 94550
The registry record
- NPI
- 1417694845
- Registered as
- Type-2 organization (not an individual dentist's personal NPI)
- Dental categories
- Endodontics, Periodontics
- Taxonomy codes
- 1223E0200X (Endodontics); 1223P0300X (Periodontics)
- Practice location
- 999 E Stanley Blvd Ste C, Livermore, CA 94550
- Telephone
- (925) 371-0300
- NPI issued
- 17 May 2022 (4 years ago)
- Record updated
- 2 May 2023 (3 years ago)
- Certified by the practice
- 2 May 2023
- NPI status
- NPI active as reported by CMS 2026-08
- Metro area
- San Francisco-Oakland-Fremont, CA (metropolitan area, Alameda County)
- State
- California (18,604 registered practices)
- Same address
- Valley Family Dentistry
- Map position
- Census address match at street level
- Snapshot
- NPPES data dissemination file, 10 August 2026
What the record tells you
Roots and Gums, the trading name of Steve and Harley Williams DDS PC, is an NPI registry record for a dental organization at 999 E Stanley Blvd Ste C in Livermore, California 94550. CMS issued NPI 1417694845 on 17 May 2022, and the practice last updated its own entry on 2 May 2023. That was 3 years ago; the details are probably current, but confirm the address when you book.
It is registered under 2 dental taxonomy codes: Endodontics (1223E0200X), Periodontics (1223P0300X). That puts it in 2 categories on this site, led by endodontics. 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: Valley Family Dentistry.
Livermore holds 42 registered dental practices inside the San Francisco-Oakland-Fremont, CA area, which has 1,785 in total on the California side and ranks 3rd in the state. 4 of the Livermore records also register endodontics, so this is one of several local options in that category. Across the metro the mix runs general dentistry 58.1%, dental clinic or center 24.5%, orthodontics 6.8%. The closest other registered practices are Valley Family Dentistry (0 miles, Livermore), Peggy Chuang DMD PC (0.1 miles, Livermore) and Gerald P Hawkins DDS INC (0.1 miles, Livermore), with 2 more inside 0.1 miles.
On our figures a routine adult cleaning in California runs $130 to $200 cash and scaling and root planing $200 to $330 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 (925) 371-0300 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 999 E Stanley Blvd Ste C, 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 |
|---|---|---|---|---|
| Valley Family Dentistry | Livermore, CA | 0 mi | General | (925) 443-3443 |
| Peggy Chuang DMD PC | Livermore, CA | 0.1 mi | Dental clinic | (909) 569-9011 |
| Gerald P Hawkins DDS INC | Livermore, CA | 0.1 mi | General | (925) 455-1232 |
| Smiles Unlimited | Livermore, CA | 0.1 mi | General | (925) 447-0440 |
| Define Dentistry | Livermore, CA | 0.1 mi | General, Dental clinic | (925) 447-8635 |
The benchmark to hold a quote from Roots and Gums against. California cost guide.
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 Roots and Gums.
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.