Alison Helfrich, DO, MPH
Alison Helfrich, DO, MPH is a Pediatric Infectious Diseases Physician in Bethesda, MD, registered under NPI 1184987539. 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 8901 WISCONSIN AVE, Bethesda, MD 20889. 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 |
|---|---|---|
| 0103203725 | VA | Pediatric Infectious Diseases Physician primary |
| 0103203725 | VA | Pediatrics Physician |
This provider holds licence 0103203725 issued in VA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Order And Referring Only - Pediatric Medicine
- PAC ID
- 0446477764
Medicare enrolment is recorded as approved under the provider type Order And Referring Only - Pediatric Medicine. This means the provider is enrolled to bill Medicare, though it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Pediatric Infectious Diseases covers
A pediatrician trained to care for children in the diagnosis, treatment and prevention of infectious diseases. This specialist can apply specific knowledge to affect a better outcome for pediatric infections with complicated courses, underlying diseases that predispose to unusual or severe infections, unclear diagnoses, uncommon diseases and complex or investigational treatments. NUCC Health Care Provider Taxonomy, code 2080P0208X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 2080P0208X | Pediatric Infectious Diseases Physician Pediatric Infectious Diseases | 0103203725 | VA | primary |
| 208000000X | Pediatrics Physician | 0103203725 | VA |
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 | 1184987539 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 20, 2012 |
| Last updated | Jul 10, 2025 |
| Status | Active |
| Sole proprietor | No |
| Credential | DO, MPH |
| Practice address |
8901 WISCONSIN AVE Bethesda, MD 20889 (301) 295-4959 |
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 | 1 | 8 | 4 | 9 | 8 | 7 | 5 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 1 | 7 | 4 | 9 | 8 | 5 | 5 | 6 |
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.