Hong-Ming Tang DDS MS.
Registered legal name: Tsai & Tang Professional Dental Corporation
824 N Diamond Bar Blvd, Diamond Bar, CA 91765
The registry record
- NPI
- 1295836682
- Registered as
- Type-2 organization (not an individual dentist's personal NPI)
- Dental categories
- Prosthodontics, Endodontics
- Taxonomy codes
- 1223E0200X (Endodontics); 1223P0700X (Prosthodontics)
- Practice location
- 824 N Diamond Bar Blvd, Diamond Bar, CA 91765
- Telephone
- (909) 612-4666
- NPI issued
- 26 September 2006 (19 years ago)
- Record updated
- 11 September 2025 (0 years ago)
- NPI status
- NPI active as reported by CMS 2026-08
- Metro area
- Los Angeles-Long Beach-Anaheim, CA (metropolitan area, Los Angeles County)
- State
- California (18,604 registered practices)
- Map position
- Census address match at street level
- Snapshot
- NPPES data dissemination file, 10 August 2026
What the record tells you
Hong-Ming Tang DDS MS., the trading name of Tsai & Tang Professional Dental Corporation, is an NPI registry record for a dental organization at 824 N Diamond Bar Blvd in Diamond Bar, California 91765. CMS issued NPI 1295836682 on 26 September 2006, 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: Endodontics (1223E0200X), Prosthodontics (1223P0700X). That puts it in 2 categories on this site, led by prosthodontics. 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.
Diamond Bar holds 55 registered dental practices inside the Los Angeles-Long Beach-Anaheim, CA area, which has 8,403 in total on the California side and ranks 1st in the state. 2 of the Diamond Bar records also register prosthodontics, so this is one of only a handful of local options in that category. Across the metro the mix runs general dentistry 65.8%, dental clinic or center 21.5%, orthodontics 6.5%. The closest other registered practices are Dr John S Yun, D.M.D. (0.1 miles, Diamond Bar), W.A. Samaan DDS INC (0.1 miles, Diamond Bar) and Diamond Bar Dental (0.1 miles, Diamond Bar), 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 (909) 612-4666 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 824 N Diamond Bar Blvd, 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 |
|---|---|---|---|---|
| Dr John S Yun, D.M.D. | Diamond Bar, CA | 0.1 mi | Periodontics | (909) 861-7277 |
| W.A. Samaan DDS INC | Diamond Bar, CA | 0.1 mi | General | (909) 860-3111 |
| Diamond Bar Dental | Diamond Bar, CA | 0.1 mi | Dental clinic | (909) 860-3111 |
| Sanjay Merchant DDS INC | Diamond Bar, CA | 0.1 mi | Dental clinic | (909) 860-0321 |
| Paula G. Elmi, DMD, Apc | Diamond Bar, CA | 0.1 mi | Endodontics | (626) 802-5079 |
The benchmark to hold a quote from Hong-Ming Tang DDS MS. 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 Hong-Ming Tang DDS MS..
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.