N/A
Registered legal name: Abbassi Johnson Professional Corporation
558 W Badillo St, Covina, CA 91722
The registry record
- NPI
- 1255615522
- Registered as
- Type-2 organization (not an individual dentist's personal NPI)
- Dental categories
- Oral surgery, General, Endodontics, Periodontics
- Taxonomy codes
- 1223E0200X (Endodontics); 1223G0001X (General practice dentistry); 1223P0300X (Periodontics); 1223S0112X (Oral and maxillofacial surgery)
- Practice location
- 558 W Badillo St, Covina, CA 91722
- Telephone
- (626) 331-0506
- NPI issued
- 5 October 2011 (14 years ago)
- Record updated
- 5 October 2011 (14 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)
- Operator size
- 10 addresses registered under this organization name nationally
- Map position
- Census address match at street level
- Snapshot
- NPPES data dissemination file, 10 August 2026
What the record tells you
N/A, the trading name of Abbassi Johnson Professional Corporation, is an NPI registry record for a dental organization at 558 W Badillo St in Covina, California 91722. CMS issued NPI 1255615522 on 5 October 2011, and the practice last updated its own entry on 5 October 2011. That was 14 years ago, so treat the phone number and the suite number as unconfirmed until someone answers.
It is registered under 4 dental taxonomy codes: Endodontics (1223E0200X), General practice dentistry (1223G0001X), Periodontics (1223P0300X), Oral and maxillofacial surgery (1223S0112X). That puts it in 4 categories on this site, led by oral and maxillofacial surgery. 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. The same registered name appears at 10 distinct addresses nationally. That is either a group practice or a name common enough that unrelated offices share it, so ask whether pricing is set locally or by a parent company.
Covina holds 49 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 Covina records also register oral and maxillofacial surgery, 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 Harry Humphreys DDS INC (0 miles, Covina), Peter H. Bae DDS Dental Corporation (0 miles, Covina) and Evans Dental DDS (0 miles, Covina), with 2 more inside 0 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 (626) 331-0506 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 558 W Badillo 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 |
|---|---|---|---|---|
| Harry Humphreys DDS INC | Covina, CA | 0 mi | General | (626) 331-0506 |
| Peter H. Bae DDS Dental Corporation | Covina, CA | 0 mi | General | (626) 332-4063 |
| Evans Dental DDS | Covina, CA | 0 mi | General | (909) 731-1668 |
| Echarte-Rodriguez Dental Corporation | Covina, CA | 0 mi | Oral surgery | (626) 331-6666 |
| Creative Dental Arts, INC. | Covina, CA | 0 mi | General | (626) 331-6819 |
The benchmark to hold a quote from N/A 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 N/A.
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.