Dr. Roberto Ivan Diaz, MD
- Medicare services, 2024
- 1,405
- Medicare patients, 2024
- 482
- Part D claims, 2024
- 80
- Publications
- 4
- Hospital affiliations
- 1
- Practice address
- 701 E. El Camino Real, 1 Northwest, Mountain View, CA 94040
- Practice phone
- Call (408) 739-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Surgery Center Mountain View
Surgery Center - Medicare-Certified · Mountain View, California
Find Dr. Diaz's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Roberto Ivan Diaz is an orthopaedic hand surgery physician in Mountain View, California
Dr. Diaz practices at Surgery Center Mountain View in Mountain View, California.
Dr. Diaz's NPI, 1124261110, was assigned on April 7, 2009. Dr. Diaz graduated from Carver College of Medicine in 2008. Dr. Diaz's California license number on file is A112035.
- NPI
- 1124261110NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4183845274
- NPI enumeration date
- April 7, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (408) 739-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Roberto Ivan Diaz practices at Surgery Center Mountain View in Mountain View, California
Dr. Diaz's primary practice is Surgery Center Mountain View, at 701 E. El Camino Real, 1 Northwest, Mountain View, CA 94040. The practice phone is (408) 739-6000.
- Surgery Center Mountain View701 E. El Camino Real, 1 Northwest, Mountain View, CA 94040Phone(408) 739-6000
Source: Dmand AI Affiliation Data
Dr. Roberto Ivan Diaz is affiliated with 3 sites of care and 1 medical group
Dr. Diaz's primary practice is Surgery Center Mountain View in Mountain View, California. Dr. Diaz is also affiliated with El Camino Health - Mountain View Hospital. The medical group on file is Palo Alto Foundation Medical Group. Dmand AI also links Dr. Diaz to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Roberto Ivan Diaz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Diaz practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Surgery Center Mountain View | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Roberto Ivan Diaz is one of 268 orthopaedic hand surgery physicians in California
Hand surgery is Dr. Diaz's primary specialty in the NPI Registry, under taxonomy code 207XS0106X. Dr. Diaz is board certified in orthopaedic surgery by the American Board of Orthopaedic Surgery. Dr. Diaz has a license on file in California.
Specialties and state licenses
- Orthopaedic hand surgery, CaliforniaPrimary
Clinical focus
Dmand AI lists arm, wrist, hand fracture and dislocation, carpal tunnel syndrome, enthesopathy in arms, hand joint or tendon inflammation, joint cyst and minor injury to a limb among the conditions Dr. Diaz treats.
Orthopaedic hand surgery physicians near Dr. Diaz
Counts of orthopaedic hand surgery physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Roberto Ivan Diaz billed Medicare for 1,405 services in 2024
CMS data shows 1,405 Medicare services from Dr. Diaz across 15 procedure codes in 2024, for 482 Medicare patients. Medicare paid $99,796 for them.
Dr. Diaz's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6432024: 6928%
- Drugs given in the office
- 2023: 2522024: 47890%
- Surgery
- 2023: 2012024: 22210%
- Other services
- 2023: 122024: 138%
Where Dr. Diaz's Medicare services took place, 2024
- In an office1,39299%
- In a facility131%
Dr. Diaz compared with the California median for orthopaedic hand surgery physicians, 2024
- Dr. Diaz
- California median
- Medicare services
- 1,405vs 95847% above
- Medicare patients
- 482vs 34440% above
- Part D claims
- 50vs 51Close to median
Medians across 252 orthopaedic hand surgery physicians in California with Dmand AI profiles that report each measure.
Dr. Diaz's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Diaz?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Diaz and other orthopaedic hand surgery physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Roberto Ivan Diaz treated 482 Medicare patients in 2024, average age 76
CMS counts 482 Medicare patients who saw Dr. Diaz in 2024. The largest group is 65 to 74, with 215 patients. 74% of them have high cholesterol, and 59% have high blood pressure. 8% are also on Medicaid. Their average risk score is 0.87, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Diaz's median patient age at 53, with 51% women.
Dr. Diaz's Medicare patients by age, 2024
Dr. Diaz's Medicare patients by sex, 2024
- Women29160%
- Men19140%
Chronic conditions among Dr. Diaz's Medicare patients, 2024
- High cholesterol74%
- High blood pressure59%
- Arthritis52%
- Osteoporosis24%
- Diabetes22%
- Ischemic heart disease20%
- Mood disorders18%
- Chronic kidney disease17%
Share of Medicare patients with each condition. A patient can have several.
Dr. Diaz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 53
Patient panel by sex, all payers
- Women51%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Roberto Ivan Diaz wrote 80 Medicare Part D claims in 2024
In 2024, Dr. Diaz wrote 80 Medicare Part D claims for 51 patients. 100% of them were for generic drugs. CMS names the drug for 50 of them, across 2 drugs with 11 or more claims each, at $196 in total drug cost. In 2023, CMS named 69 claims across 2 drugs.
Dr. Diaz's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Diaz's Part D claims, 2024
- Opioids57%46 of 80 claims
- Antibiotics15%12 of 80 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 692024: 5028%
Drugs named by CMS: 2 in 2024, 2 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Roberto Ivan Diaz takes part in Medicare
Dr. Diaz accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Removal of nail tissue: 1 to 10 procedures (CMS shows small counts as a range)
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Upper limb (arm) arthroscopy (minimally invasive joint repair): 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Roberto Ivan Diaz has 4 publications on record
Dmand AI links 4 papers to Dr. Diaz in 2016. Dr. Diaz's most frequent co-authors are John P. Albright, MD and Jeffrey Yao, MD.
Dr. Diaz's most frequent co-authors
Recent publications by Dr. Diaz
Sports Med Arthrosc Rev
See who Dr. Diaz researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Diaz works with, so you can find a warm path to the right orthopaedic hand surgery physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Roberto Ivan Diaz received $2,789 in industry payments from 2016 to 2025
CMS Open Payments shows 19 general payments to Dr. Diaz from 10 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 43% of the total. Evolution Surgical, Inc paid the most, $1,035.
General payments to Dr. Diaz by program year, 2016 to 2025
General payments to Dr. Diaz by kind, 2016 to 2025
- Food and beverage$1,20943%
- Education$1,03537%
- Travel and lodging$54620%
Companies that paid Dr. Diaz the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Roberto Ivan Diaz graduated from Carver College of Medicine
Dr. Diaz graduated from Carver College of Medicine in 2008.
- Medical school
- Board certified in orthopaedic surgery
- Board certified in surgery of the hand
Source: Dmand AI Professional Profile Data
Dr. Roberto Ivan Diaz accepts plans from 11 insurance carriers
Dr. Diaz is in network with 11 carriers, including Elevance, Aetna and United Healthcare. PPO plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Elevance
- Aetna
- United Healthcare
- Blue Cross Blue Shield of Michigan
- HCSC
- Alliant Health Plans
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- +3 more carriersWith a free account
Plan types Dr. Diaz accepts, by number of carriers
- PPO7
- HMO6
- EPO4
- Medicare4
- POS4
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Roberto Ivan Diaz's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Roberto Ivan Diaz
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Roberto Ivan Diaz's NPI number?
Dr. Roberto Ivan Diaz's NPI number is 1124261110. It was assigned on April 7, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Roberto Ivan Diaz?
Dr. Roberto Ivan Diaz is an orthopaedic hand surgery physician in Mountain View, California. The primary specialty in the NPI Registry is Orthopaedic Hand Surgery Physician (taxonomy code 207XS0106X).
Where does Dr. Roberto Ivan Diaz practice?
Dr. Diaz practices at 701 E. El Camino Real, 1 Northwest, Mountain View, CA 94040. Dr. Diaz's primary practice is Surgery Center Mountain View in Mountain View, California. Dmand AI also links Dr. Diaz to 1 group practice or clinic.
What is Dr. Roberto Ivan Diaz's office phone number?
The practice phone on file for Dr. Diaz is (408) 739-6000.
What is Dr. Roberto Ivan Diaz's medical license number?
Dr. Diaz's California license number on file is A112035.
Which hospitals is Dr. Roberto Ivan Diaz affiliated with?
Dr. Diaz is affiliated with El Camino Health - Mountain View Hospital.
What medical group is Dr. Roberto Ivan Diaz part of?
Dr. Diaz is linked to Palo Alto Foundation Medical Group.
Does Dr. Roberto Ivan Diaz accept Medicare?
Yes. CMS data shows Dr. Diaz billed Medicare for 1,405 services in 2024, and Dr. Diaz accepts Medicare assignment.
How many Medicare patients does Dr. Roberto Ivan Diaz see?
CMS counts 482 Medicare patients who saw Dr. Diaz in 2024, with an average age of 76.
Is Dr. Roberto Ivan Diaz board certified?
Yes. Dr. Diaz is board certified in orthopaedic surgery by the American Board of Orthopaedic Surgery.
Show 8 more questionsShow fewer questions
What services does Dr. Roberto Ivan Diaz bill to Medicare?
In 2024, Dr. Diaz's most billed Medicare services were injected or infused drug (J3301), office visit, established patient (99213) and office visit, established patient (99214).
Where did Dr. Roberto Ivan Diaz go to medical school?
Dr. Diaz graduated from Carver College of Medicine in 2008.
What drugs does Dr. Roberto Ivan Diaz prescribe most?
In 2024 Medicare Part D data, Dr. Diaz's most prescribed drugs by claims were Hydrocodone-Acetaminophen and Ibuprofen.
Has Dr. Roberto Ivan Diaz received payments from drug or device companies?
CMS Open Payments shows $2,789 in general payments to Dr. Diaz from 10 companies from 2016 to 2025. The largest total came from Evolution Surgical, Inc.
How long has Dr. Roberto Ivan Diaz been practicing?
Dr. Diaz graduated from medical school in 2008, 18 years ago.
Does Dr. Roberto Ivan Diaz do research?
Dmand AI links 4 publications to Dr. Diaz.
Who does Dr. Roberto Ivan Diaz publish with?
Dr. Diaz's most frequent co-authors are John P. Albright, MD (1 shared paper) and Jeffrey Yao, MD (1 shared paper).
What insurance does Dr. Roberto Ivan Diaz accept?
Dr. Diaz is in network with 11 carriers, including Elevance, Aetna and United Healthcare. PPO plans come from the most carriers, 7. Check the plan with the practice before a visit.
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