Phaedra Tachtatzis, MD
Phaedra Tachtatzis, MD is a Hepatology Physician in Milwaukee, WI, registered under NPI 1801672282. 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 9200 W WISCONSIN AVE, Milwaukee, WI 53226. 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 |
|---|---|---|
| 10-876 | WI | Hepatology Physician primary |
| 10-876 | WI | Transplant Hepatology Physician |
This provider holds licence 10-876 issued in WI. 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
- 0042665465
Medicare enrolment is recorded as approved under the provider type Practitioner - Gastroenterology. 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 Hepatology covers
The discipline of Hepatology encompasses the structure, function, and diseases of the liver and biliary tract. The American Board of Internal Medicine considers Hepatology part of the subspecialty of gastroenterology. Physicians who identify themselves as Hepatologists usually, but not always, have been trained in gastrointestinal programs. NUCC Health Care Provider Taxonomy, code 207RI0008X
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 | |
|---|---|---|---|---|
| 207RI0008X | Hepatology Physician Hepatology | 10-876 | WI | primary |
| 207RT0003X | Transplant Hepatology Physician Transplant Hepatology | 10-876 | WI |
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 | 1801672282 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 1, 2023 |
| Last updated | Nov 17, 2023 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
9200 W WISCONSIN AVE Milwaukee, WI 53226 (414) 805-3310 Fax (414) 805-3885 |
| Other identifiers |
1801672282
(WI) |
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 | 8 | 0 | 1 | 6 | 7 | 2 | 2 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 0 | 1 | 3 | 7 | 4 | 2 | 7 |
Sum = 58 · next multiple of 10 = 60 · check digit = 2 · actual last digit = 2
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.