Saul Karpen, MD, PHD
Saul Karpen, MD, PHD is a Pediatric Gastroenterology Physician in Richmond, VA, registered under NPI 1427138783. 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 1000 E BROAD ST, Richmond, VA 23219. 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 |
|---|---|---|
| 0101280550 | VA | Pediatric Gastroenterology Physician primary |
| 0101280550 | VA | Gastroenterology Physician |
This provider holds licence 0101280550 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
- Practitioner - Gastroenterology
- PAC ID
- 6507162369
- Enrollment ID
- I20240513000494
Medicare enrolment is recorded as approved under the provider type Practitioner - Gastroenterology. 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.
What Pediatric Gastroenterology covers
A pediatrician who specializes in the diagnosis and treatment of diseases of the digestive systems of infants, children and adolescents. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using lighted scopes to see internal organs. NUCC Health Care Provider Taxonomy, code 2080P0206X
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 | |
|---|---|---|---|---|
| 2080P0206X | Pediatric Gastroenterology Physician Pediatric Gastroenterology | 0101280550 | VA | primary |
| 207RG0100X | Gastroenterology Physician Gastroenterology | 0101280550 | 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 | 1427138783 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Oct 17, 2006 |
| Last updated | May 4, 2026 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD, PHD |
| Practice address |
1000 E BROAD ST Richmond, VA 23219 (804) 828-2467 Fax (804) 828-5348 |
| Mailing address |
PO BOX 780125 Philadelphia, PA 19178 |
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 | 4 | 2 | 7 | 1 | 3 | 8 | 7 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 4 | 7 | 2 | 3 | 7 | 7 | 7 |
Sum = 67 · next multiple of 10 = 70 · check digit = 3 · actual last digit = 3
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.