Christina Sharkey, MS, RD
Christina Sharkey, MS, RD is a Pediatric Nutrition Registered Dietitian in Sacramento, CA, registered under NPI 1003518366.
Getting there
Here is what surrounds this office in Sacramento, based on OpenStreetMap data collected Oct 2, 2026. Parking is available about 0.32 mi away at Parking Structure 4. The nearest transit stop is 864 ft away, served by Stockton + Colonial. If you arrive early, there is a coffee shop 0.44 mi away.
Getting here and what is nearby
Parking 380 ft ~2 min
Parking Parking Structure 3 445 ft ~2 min
4251 X Street, Sacramento 95817
Transit Stockton + X St Medcenter 585 ft ~3 min
Transit Stockton + X St Medcenter 670 ft ~3 min
Hotel Hotel Med Park, Ascend Hotel Collection 707 ft ~3 min
Transit Stockton + Colonial 864 ft ~4 min
Hotel Courtyard Sacramento Midtown 0.21 mi ~5 min
Parking Parking Structure 4 0.32 mi ~7 min
2249 48th St, Sacramento 95817
Hotel De Ville Motel 0.34 mi ~7 min
2756 Stockton Boulevard, Sacramento 95817
Coffee Starbucks 0.44 mi ~9 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Nutrition, Pediatric covers
An individual who is a Board Certified Specialist in Pediatric Nutrition and applies evidence-based nutrition knowledge in providing medical nutrition therapy for pediatric patients. Specialists work directly with healthy and/or ill children (newborn up to 21 years of age) as well as children with special health care needs in a variety of settings (hospitals, community-based and/or family-centered programs, education programs, home, etc.), OR indirectly through management, care coordination, education, quality improvement, or research practice linked specifically to pediatric nutrition. NUCC Health Care Provider Taxonomy, code 133VN1004X
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 | 1003518366 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 20, 2023 |
| Last updated | Mar 20, 2023 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | MS, RD |
| Practice address |
4301 X ST Sacramento, CA 95817 (916) 734-2011 |
| Mailing address |
5410 EVAN CT Rocklin, CA 95765 |
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 | 0 | 0 | 3 | 5 | 1 | 8 | 3 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 1 | 7 | 3 | 3 |
Sum = 44 · next multiple of 10 = 50 · check digit = 6 · actual last digit = 6
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.