Geraldina Lionetti, M.D.
Geraldina Lionetti, M.D. is a Pediatric Rheumatology Physician in San Francisco, CA, registered under NPI 1336387299. 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 533 PARNASSUS AVE ROOM U127, BOX 0133, San Francisco, CA 94143. 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 |
|---|---|---|
| A103471 | CA | Pediatric Rheumatology Physician primary |
| A103471 | CA | Pediatrics Physician |
This provider holds licence A103471 issued in CA. 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 - Rheumatology
- PAC ID
- 5991951378
- Enrollment ID
- I20120820000423
Medicare enrolment is recorded as approved under the provider type Practitioner - Rheumatology. 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 Rheumatology covers
A pediatrician who treats diseases of joints, muscle, bones and tendons. A pediatric rheumatologist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and "collagen" diseases. NUCC Health Care Provider Taxonomy, code 2080P0216X
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 | |
|---|---|---|---|---|
| 2080P0216X | Pediatric Rheumatology Physician Pediatric Rheumatology | A103471 | CA | primary |
| 208000000X | Pediatrics Physician | A103471 | CA |
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 | 1336387299 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jan 30, 2009 |
| Last updated | Aug 4, 2023 |
| Status | Active |
| Sole proprietor | No |
| Credential | M.D. |
| Practice address |
533 PARNASSUS AVE ROOM U127, BOX 0133 San Francisco, CA 94143 (415) 514-3207 Fax (415) 476-3466 |
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 | 3 | 3 | 6 | 3 | 8 | 7 | 2 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 3 | 6 | 6 | 6 | 8 | 5 | 2 | 9 |
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.