Niceto Lopez, MD
Niceto Lopez, MD is a Hospitalist Physician in Walnut Creek, CA, registered under NPI 1003012931. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Walnut Creek, based on OpenStreetMap data collected Aug 29, 2026. Parking is available about 563 ft away. There is EV charging 528 ft from the office (7-Eleven) — useful if you are driving in from out of town. The nearest transit stop is 445 ft away, served by North Civic Drive & Ygnacio Valley Road. If you arrive early, there is a coffee shop 0.47 mi away.
Getting here and what is nearby
Parking 223 ft ~1 min
Transit Ygnacio Valley Road & North Civic Drive 258 ft ~1 min
Parking 343 ft ~2 min
Transit North Civic Drive & Ygnacio Valley Road 353 ft ~2 min
Transit North Civic Drive & Ygnacio Valley Road 445 ft ~2 min
EV charging 7-Eleven 528 ft ~2 min
Gas station 7-Eleven 575 ft ~3 min
Parking 563 ft ~3 min
Convenience 7-Eleven 666 ft ~3 min
Restaurant Kibi's Cafe 0.24 mi ~5 min
1981 Ste.115 North Broadway, 94596
Mo-Fr 10:00-19:00; Sa 10:00-17:00
Restaurant Tullio's 0.26 mi ~6 min
2065 North Broadway, Walnut Creek
Convenience 7-Eleven 0.31 mi ~7 min
Restaurant House of Sake 0.32 mi ~7 min
313 North Civic Drive, Walnut Creek 94596
Coffee Bondadoso Coffee and Tea Collective 0.35 mi ~7 min
Gas station Chevron 0.36 mi ~8 min
Hotel Residence Inn 0.44 mi ~9 min
2050 North California Boulevard, Walnut Creek 94596
Coffee Library Cafe 0.45 mi ~10 min
Mo-Th 09:00-18:00, 09:00-18:00; Fr 08:00-17:00; Sa 09:00-17:00
Coffee Cafe La Scala 0.47 mi ~10 min
1655 North Main Street, 94596
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| A96421 | CA | Hospitalist Physician primary |
This provider holds licence A96421 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 - Internal Medicine
- PAC ID
- 3577651264
- Enrollment ID
- I20071113000785
Medicare enrolment is recorded as approved under the provider type Practitioner - Internal Medicine. 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 Hospitalist covers
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients. NUCC Health Care Provider Taxonomy, code 208M00000X
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 | 1003012931 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 26, 2007 |
| Last updated | Jul 8, 2007 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | MD |
| Practice address |
801 YGNACIO VALLEY RD SUITE 250 Walnut Creek, CA 94596 (925) 946-1080 |
| Mailing address |
3608 LAKESHORE AVE APT 3 Oakland, CA 94610 |
| Other identifiers |
A96421
· Other (CA) |
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 | 0 | 1 | 2 | 9 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 1 | 4 | 9 | 6 |
Sum = 49 · next multiple of 10 = 50 · check digit = 1 · actual last digit = 1
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.