Holly Do Nguyen, D.M.D.
Holly Do Nguyen, D.M.D. is a provider specialising in Pediatric Dentistry in Philadelphia, PA, registered under NPI 1619258969. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 2301 E ALLEGHENY AVE STE 201, Philadelphia, PA 19134. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| DS038673 | PA | Pediatric Dentistry primary |
| DS038673 | PA | General Practice Dentistry |
| 22DI02484700 | NJ | Pediatric Dentistry |
Licences are recorded in 2 states: PA, NJ. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Order And Referring Only - Dentist
- PAC ID
- 5294097499
- Enrollment ID
- I20180328002267
Medicare enrolment is recorded as approved under the provider type Order And Referring Only - Dentist. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
Licensed in 2 states
This provider holds licences in 2 states: New Jersey and Pennsylvania. The practice address on file is in Philadelphia, PA, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- DS038673
- Specialty
- Pediatric Dentistry
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Pediatric Dentistry covers
An age-defined specialty that provides both primary and comprehensive preventive and therapeutic oral health care for infants and children through adolescence, including those with special health care needs. NUCC Health Care Provider Taxonomy, code 1223P0221X
All registered taxonomy codes
This provider registers 3 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 1223P0221X | Pediatric Dentistry Pediatric Dentistry | DS038673 | PA | primary |
| 1223G0001X | General Practice Dentistry General Practice | DS038673 | PA | |
| 1223P0221X | Pediatric Dentistry Pediatric Dentistry | 22DI02484700 | NJ |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1619258969 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 31, 2011 |
| Last updated | Dec 4, 2024 |
| Status | Active |
| Sole proprietor | No |
| Credential | D.M.D. |
| Practice address |
2301 E ALLEGHENY AVE STE 201 Philadelphia, PA 19134 (215) 282-8000 |
| Mailing address |
3101 PARKVIEW WALK Philadelphia, PA 19125 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 6 | 1 | 9 | 2 | 5 | 8 | 9 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 6 | 2 | 9 | 4 | 5 | 7 | 9 | 3 |
Sum = 71 · next multiple of 10 = 80 · check digit = 9 · actual last digit = 9
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.