Dr. Calvin Zhao & Associates, Durham, P.A.
3600 North Duke Street, Durham, NC 27704
The registry record
- NPI
- 1689644163
- Registered as
- Type-2 organization (not an individual dentist's personal NPI)
- Dental categories
- General, Orthodontics, Pediatric, Endodontics, Periodontics, Prosthodontics
- Taxonomy codes
- 122300000X (Dentist); 1223E0200X (Endodontics); 1223G0001X (General practice dentistry); 1223P0221X (Pediatric dentistry); 1223P0300X (Periodontics); 1223P0700X (Prosthodontics); 1223X0400X (Orthodontics and dentofacial orthopedics)
- Practice location
- 3600 North Duke Street, Durham, NC 27704
- Telephone
- (919) 471-3315
- NPI issued
- 25 January 2006 (20 years ago)
- Record updated
- 19 December 2017 (8 years ago)
- NPI status
- NPI active as reported by CMS 2026-08
- Metro area
- Durham-Chapel Hill, NC (metropolitan area, Durham County)
- State
- North Carolina (4,455 registered practices)
- Subpart of
- Dental One Partners, INC
- Map position
- Census address match at street level
- Snapshot
- NPPES data dissemination file, 10 August 2026
What the record tells you
Dr. Calvin Zhao & Associates, Durham, P.A. is an NPI registry record for a dental organization at 3600 North Duke Street in Durham, North Carolina 27704. CMS issued NPI 1689644163 on 25 January 2006, and the practice last updated its own entry on 19 December 2017. That was 8 years ago, so treat the phone number and the suite number as unconfirmed until someone answers. CMS records it as a subpart of Dental One Partners, INC, so billing and pricing may follow the parent's policies.
It is registered under 7 dental taxonomy codes: Dentist (122300000X), Endodontics (1223E0200X), General practice dentistry (1223G0001X), Pediatric dentistry (1223P0221X), Periodontics (1223P0300X), Prosthodontics (1223P0700X), Orthodontics and dentofacial orthopedics (1223X0400X). That puts it in 6 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.
Durham holds 178 registered dental practices inside the Durham-Chapel Hill, NC area, which has 294 in total on the North Carolina side and ranks 4th in the state. 120 of the Durham records also register general dentistry, so this is one of several local options in that category. Across the metro the mix runs general dentistry 64.3%, dental clinic or center 16.7%, orthodontics 7.8%. The closest other registered practices are Dentalworks (0 miles, Durham), Night and Day Dental (0.1 miles, Durham) and Carolina Smiles Dental Clinic (0.1 miles, Durham), with 2 more inside 0.4 miles.
On our figures a routine adult cleaning in North Carolina runs $95 to $140 cash and scaling and root planing $168 to $260 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 (919) 471-3315 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 3600 North Duke Street, 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 |
|---|---|---|---|---|
| Dentalworks | Durham, NC | 0 mi | General | (919) 471-3315 |
| Night and Day Dental | Durham, NC | 0.1 mi | General | (984) 439-1685 |
| Carolina Smiles Dental Clinic | Durham, NC | 0.1 mi | General | (919) 620-6700 |
| Ernest E. Wooden, III, D.D.S., P.A. | Durham, NC | 0.4 mi | Dental clinic | (919) 471-1036 |
| North Durham Pediatric Dentistry | Durham, NC | 0.4 mi | Pediatric | (919) 695-9442 |
The benchmark to hold a quote from Dr. Calvin Zhao & Associates, Durham, P.A. 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 Dr. Calvin Zhao & Associates, Durham, P.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.