Hillary Buch
Hillary Buch is a Registered Dietitian in Casa Grande, AZ, registered under NPI 1871951582.
Getting there
The practice address on file is 1281 E COTTONWOOD LN, Casa Grande, AZ 85122. 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 |
|---|---|---|
| ND8632 | FL | Registered Dietitian |
| 37003963A | IN | Registered Dietitian |
| 2011026060 | MO | Registered Dietitian |
| D-1588 | ID | Registered Dietitian |
| L006791 | NC | Registered Dietitian |
| 2025028888 | MO | Registered Dietitian |
| LD.09070 | OH | Registered Dietitian |
| 440-LD | HI | Registered Dietitian |
| DT89424 | TX | Registered Dietitian |
| 3236 | LA | Registered Dietitian primary |
Licences are recorded in 9 states: FL, IN, MO, ID, NC, OH, HI, TX, LA. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Registered Dietitian Or Nutrition Professional
- PAC ID
- 3678099181
Enrolled in Medicare 5 times, across 5 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Texas | I20250428003655 | Practitioner - Registered Dietitian Or Nutrition Professional |
| Louisiana | I20250428003924 | Practitioner - Registered Dietitian Or Nutrition Professional |
| Arizona | I20250502002871 | Practitioner - Registered Dietitian Or Nutrition Professional |
| Hawaii | I20250502002957 | Practitioner - Registered Dietitian Or Nutrition Professional |
| Missouri | I20250813001217 | Practitioner - Registered Dietitian Or Nutrition Professional |
Medicare enrolment is recorded as approved under the provider type Practitioner - Registered Dietitian Or Nutrition Professional. There are 5 separate enrolment records across 5 states (TX, LA, AZ, HI, MO). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. 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 9 states
This provider holds licences in 9 states: Florida, Hawaii, Idaho, Indiana, Louisiana, Missouri, North Carolina, Ohio and Texas. Multi-state licensure often means the provider works near a state border, covers more than one office, or delivers care 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 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 Dietitian, Registered covers
A Registered Dietitian (RD)/Registered Dietitian Nutritionist (RDN) is an individual uniquely trained in the science of nutrition and practice of dietetics to design and provide medical nutrition therapy (MNT) and other evidence-based applications of the Nutrition Care Process (NCP) that exemplify the profession's systematic approach to providing high quality nutrition care. Registered dietitians provide MNT for the purpose of disease prevention or management, or to treat or rehabilitate an illness, injury, or condition, with the use of specific, indicated physical and cognitive nutrition care services comprised of one or more of the following aspects of the NCP: nutrition assessment/reassessment, nutrition diagnosis, nutrition intervention (e.g., nutrition counseling, therapeutic diet ordering, and nutrition education) and nutrition monitoring and evaluation. NUCC Health Care Provider Taxonomy, code 133V00000X
All registered taxonomy codes
This provider registers 10 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 133V00000X | Registered Dietitian | ND8632 | FL | |
| 133V00000X | Registered Dietitian | 37003963A | IN | |
| 133V00000X | Registered Dietitian | 2011026060 | MO | |
| 133V00000X | Registered Dietitian | D-1588 | ID | |
| 133V00000X | Registered Dietitian | L006791 | NC | |
| 133V00000X | Registered Dietitian | 2025028888 | MO | |
| 133V00000X | Registered Dietitian | LD.09070 | OH | |
| 133V00000X | Registered Dietitian | 440-LD | HI | |
| 133V00000X | Registered Dietitian | DT89424 | TX | |
| 133V00000X | Registered Dietitian | 3236 | LA | primary |
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 | 1871951582 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 9, 2016 |
| Last updated | Aug 4, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
1281 E COTTONWOOD LN Casa Grande, AZ 85122 (520) 863-9800 Fax (520) 863-1510 |
| Mailing address |
PO BOX 749495 Atlanta, GA 30374 |
| Other names |
Hillary Oneto Former Legal Business Name |
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 | 7 | 1 | 9 | 5 | 1 | 5 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 5 | 1 | 9 | 5 | 2 | 5 | 7 |
Sum = 68 · next multiple of 10 = 70 · 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.