Roberto Diaz, M.D.
NPI 1124261110 · Orthopaedic Hand Surgery Physician · Mountain View, CA
Roberto Diaz, M.D. is a Orthopaedic Hand Surgery Physician provider in Mountain View, CA (NPI 1124261110).
Provider details
- NPI number
- 1124261110
- Entity type
- Individual
- Primary specialty
- Orthopaedic Hand Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A112035 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
927 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 227 | $110 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 199 | $155 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 147 | $200 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 106 | $133 |
| Injection Into Tendon Or Ligament20550 | 98 | $68 |
| Aspiration And/Or Injection of Fluid From Small Joint20600 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$221 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-04-07
- Last updated
- 2020-12-10
- Certified
- 2020-12-10
Frequently asked questions
- What is Roberto Diaz's NPI number?
- Roberto Diaz's National Provider Identifier (NPI) is 1124261110, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Roberto Diaz's specialty?
- Roberto Diaz is listed in the NPPES registry with a primary specialty of Orthopaedic Hand Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Roberto Diaz located?
- Roberto Diaz's practice location on file with NPPES is 701 E El Camino Real, Mountain View, CA 94040-2833.
- What is Roberto Diaz's phone number?
- The practice phone number listed in the NPPES registry for Roberto Diaz is (650) 934-7111.
- Is Roberto Diaz's NPI active?
- Yes — Roberto Diaz's NPI (1124261110) is active in the NPPES registry as of the last update on 2020-12-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.