Dr. Robert Dionisio, MD

  • Oakland, CA
  • Anesthesiologist
NPI1023321429PAC ID7113148008
Medicare services, 2024
72
Medicare patients, 2024
146
Publications
1
MIPS score, 2024
95
Hospital affiliations
1
Practice address
1411 East 31st Street, Oakland, CA 94602
Practice phone
Call (510) 437-4800
Professional email
Get professional email
Personal email
Get personal email
Mobile number
Get mobile number
Social profiles

Primary practice

Alameda Health System - Highland Hospital

Hospital · Oakland, California

See all 3 affiliations

Find Dr. Dionisio'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.

View contacts for free

Dr. Robert Dionisio is an anesthesiologist in Oakland, California

Dr. Dionisio practices at Alameda Health System - Highland Hospital in Oakland, California, part of Alameda County.

Dr. Dionisio's NPI, 1023321429, was assigned on July 14, 2010. Dr. Dionisio graduated from Wayne State University School Of Medicine in 2010. Dr. Dionisio's Michigan license number on file is 4301097153.

NPI and contact details
Medicare PAC ID
7113148008
NPI enumeration date
July 14, 2010
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(510) 437-4800
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
42
Medical school graduation
2010

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Robert Dionisio practices at Alameda Health System - Highland Hospital in Oakland, California

Dr. Dionisio's primary practice is Alameda Health System - Highland Hospital, at 1411 East 31st Street, Oakland, CA 94602 in Alameda County. The practice phone is (510) 437-4800.

Source: Dmand AI Affiliation Data

Dr. Robert Dionisio is affiliated with 2 sites of care and 1 medical group

Dr. Dionisio's primary practice is Alameda Health System - Highland Hospital in Oakland, California, part of Alameda County. The medical group on file is Alameda Health System. Dmand AI also links Dr. Dionisio to 1 more community health center, named with a free account. Dr. Dionisio's employer is on file too: a hospital.

See all 3 affiliations for Dr. Dionisio

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Robert Dionisio's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Dionisio practices, 2 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Alameda Health System - Highland HospitalAvailable with a free account
+1 more affiliated siteAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

See the EHR and IT leaders at every hospital where Dr. Dionisio practices

Dmand AI maps EHR vendors, IT decision makers and buying committees across Alameda County and 6.2K+ hospitals, with verified contacts in the same login.

Dr. Robert Dionisio is one of 6,593 anesthesiologists in California

Anesthesiology is Dr. Dionisio's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Dionisio is board certified in anesthesiology by the American Board of Anesthesiology. Dmand AI has Dr. Dionisio's licenses on file in 3 states: Michigan, California and New York.

Specialties and state licenses

  • Anesthesiology, MichiganPrimaryLicense 4301097153 · 2010 to 2011 · taxonomy 207L00000X
  • California license2014 to 2025
  • New York license2014 to 2016

Anesthesiologists near Dr. Dionisio

Counts of anesthesiologists 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. Robert Dionisio billed Medicare for 72 services in 2024

CMS data shows 72 Medicare services from Dr. Dionisio across 4 procedure codes in 2024, for 146 Medicare patients. Medicare paid $8,472 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 202472
Medicare patients146
Paid by Medicare$8,472
Procedure codes4

Dr. Dionisio's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Anesthesia
2023: 162024: 72350%

Dr. Dionisio compared with the California median for anesthesiologists, 2024

  • Dr. Dionisio
  • California median
Medicare services
72vs 72Close to median
Medicare patients
146vs 143Close to median

Medians across 5,562 anesthesiologists in California with Dmand AI profiles that report each measure.

Dr. Dionisio'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.

See all procedures by Dr. Dionisio

Need commercial claims for Dr. Dionisio?

Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Dionisio and other anesthesiologists in California.

Book a meeting

Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Robert Dionisio treated 146 Medicare patients in 2024, average age 68

CMS counts 146 Medicare patients who saw Dr. Dionisio in 2024. The largest group is 65 to 74, with 79 patients. 75% of them have high blood pressure, and 65% have high cholesterol. 92% are also on Medicaid. Their average risk score is 2.09, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Dionisio's median patient age at 53, with 45% women.

Medicare patients, 2024146
Average age68
Average risk score2.09
Also on Medicaid92%

Dr. Dionisio's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Dionisio's Medicare patients by sex, 2024

  • Women6847%
  • Men7853%

Chronic conditions among Dr. Dionisio's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol65%
  3. Diabetes47%
  4. Arthritis38%
  5. Mood disorders32%
  6. Alcohol and drug use disorders29%
  7. Heart failure29%
  8. Chronic kidney disease28%

Share of Medicare patients with each condition. A patient can have several.

Dr. Dionisio'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

  • Women45%
  • Men52%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Robert Dionisio scored 95 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Dr. Dionisio for performance year 2024, reported as part of a group. Dr. Dionisio accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Dr. Dionisio's MIPS scores, performance year 2024

  • 95of 100Final score
  • 86.9of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 73of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

For MedTech and pharma teams

Find anesthesiologists like Dr. Dionisio by procedure volume and prescribing

Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.

Dr. Robert Dionisio has 1 publication on record

Dmand AI links 1 paper to Dr. Dionisio.

Papers1

Recent publications by Dr. Dionisio

See all 1 publications and co-authors

See who Dr. Dionisio researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Dionisio works with, so you can find a warm path to the right anesthesiologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Robert Dionisio received $229 in industry payments from 2016 to 2025

CMS Open Payments shows 13 general payments to Dr. Dionisio from 3 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 93% of the total. Mallinckrodt LLC paid the most, $195.

General payments to Dr. Dionisio by program year, 2016 to 2025

General payments to Dr. Dionisio by kind, 2016 to 2025

$229in total
  • Food and beverage$21393%
  • Education$167%

Companies that paid Dr. Dionisio the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Dionisio

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Robert Dionisio graduated from Wayne State University School Of Medicine

Dr. Dionisio graduated from Wayne State University School Of Medicine in 2010.

  1. Medical schoolWayne State University School Of Medicine
  2. Board certified in anesthesiologyAmerican Board of Anesthesiology

Source: Dmand AI Professional Profile Data

Dr. Robert Dionisio accepts plans from 6 insurance carriers

Dr. Dionisio is in network with 6 carriers, including United Healthcare, Elevance and Aspirus Health Plan. POS plans come from the most carriers, 3. Check the plan with the practice before a visit.

  • United Healthcare
  • Elevance
  • Aspirus Health Plan
  • Blue Cross and Blue Shield of Kansas City
  • CMS Medicare
  • HCSC

Plan types Dr. Dionisio accepts, by number of carriers

  1. POS3
  2. PPO3
  3. HMO2
  4. Medicare2
  5. EPO1

Source: Dmand AI Insurance Network Data

Sources for Dr. Robert Dionisio's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Robert Dionisio

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. Robert Dionisio's NPI number?

Dr. Robert Dionisio's NPI number is 1023321429. It was assigned on July 14, 2010, and it is active in the NPI Registry.

What kind of doctor is Dr. Robert Dionisio?

Dr. Robert Dionisio is an anesthesiologist in Oakland, California. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).

Where does Dr. Robert Dionisio practice?

Dr. Dionisio practices at 1411 East 31st Street, Oakland, CA 94602. Dr. Dionisio's primary practice is Alameda Health System - Highland Hospital in Oakland, California, part of Alameda County. Dmand AI also links Dr. Dionisio to 1 community health center.

What is Dr. Robert Dionisio's office phone number?

The practice phone on file for Dr. Dionisio is (510) 437-4800.

What is Dr. Robert Dionisio's medical license number?

Dr. Dionisio's Michigan license number on file is 4301097153, one of the licenses on file in 3 states.

Which states has Dr. Robert Dionisio been licensed in?

Dmand AI has state licenses on file for Dr. Dionisio in Michigan (2010 to 2011), California (2014 to 2025) and New York (2014 to 2016).

Which hospitals is Dr. Robert Dionisio affiliated with?

Dr. Dionisio practices at Alameda Health System - Highland Hospital in Oakland, California.

What medical group is Dr. Robert Dionisio part of?

Dr. Dionisio is linked to Alameda Health System.

Does Dr. Robert Dionisio accept Medicare?

Yes. CMS data shows Dr. Dionisio billed Medicare for 72 services in 2024, and Dr. Dionisio accepts Medicare assignment.

What is Dr. Robert Dionisio's MIPS score?

Dr. Dionisio's MIPS final score for performance year 2024 is 95 out of 100, reported as part of a group.

Show 8 more questionsShow fewer questions

How many Medicare patients does Dr. Robert Dionisio see?

CMS counts 146 Medicare patients who saw Dr. Dionisio in 2024, with an average age of 68.

Is Dr. Robert Dionisio board certified?

Yes. Dr. Dionisio is board certified in anesthesiology by the American Board of Anesthesiology.

What services does Dr. Robert Dionisio bill to Medicare?

In 2024, Dr. Dionisio's most billed Medicare services were anesthesia (00731), anesthesia (00811) and anesthesia (00142).

Where did Dr. Robert Dionisio go to medical school?

Dr. Dionisio graduated from Wayne State University School Of Medicine in 2010.

Has Dr. Robert Dionisio received payments from drug or device companies?

CMS Open Payments shows $229 in general payments to Dr. Dionisio from 3 companies from 2016 to 2025. The largest total came from Mallinckrodt LLC.

How long has Dr. Robert Dionisio been practicing?

Dr. Dionisio graduated from medical school in 2010, 16 years ago.

Does Dr. Robert Dionisio do research?

Dmand AI links 1 publication to Dr. Dionisio.

What insurance does Dr. Robert Dionisio accept?

Dr. Dionisio is in network with 6 carriers, including United Healthcare, Elevance and Aspirus Health Plan. POS plans come from the most carriers, 3. Check the plan with the practice before a visit.

Selling to anesthesiology practices?

See anesthesiologists in California by site of care and group

Find the practices, groups and hospitals they work with, and the right people to contact at each.

  • 30 days free
  • Self-serve
  • No credit card

Cookie settings

Turn each category on or off. Your choice is kept for 12 months and you can change it here at any time.

Necessary

Always on. Sign-in, security, downloads you asked for, your cookie choice, and the page that led to a signup.

View cookies (6)
  • dm_consentDmand AI. Your cookie choices and whether your browser sent a Global Privacy Control signal. 12 months.
  • dm_ft, dm_ltDmand AI. The first and the latest page you arrived on, with the date, so a signup is credited to the page that worked. 90 days, 30 days.
  • dm_fs, dm_lsDmand AI. The first and the latest source of a visit (a search engine, a campaign or the site that linked here). 90 days, 30 days.
  • dm_dl, dm_dl_okDmand AI. After you give an email address for a download, lets you download files without being asked again. 30 days.
  • Session and CSRF cookiesDmand AI (app.dmand.ai). Sign-in and form protection in the application. Session.
  • __cf_bm, cf_clearanceCloudflare. Tells people from automated traffic and keeps the site available. 30 minutes; cf_clearance while a security check is valid.

Analytics

On unless you turn it off. How pages are used, in aggregate, and recordings of how pages are used.

View cookies (6)
  • Google Tag ManagerGoogle. Loads the analytics and marketing tags that are on. Sets no cookie of its own and does not load when both categories are off. n/a.
  • _ga, _ga_<container-id>Google Analytics 4. Visits and page views in aggregate on dmand.ai. 2 years.
  • _clck, _clskMicrosoft Clarity. Recordings and heatmaps of how pages are used, with form fields masked. 1 year, 1 day.
  • CLID, MUID, ANONCHK, MR, SMMicrosoft (clarity.ms). Set by Microsoft when Clarity loads, to recognize a browser across sites that use Clarity. Up to 1 year.
  • None (cookieless)Ahrefs Analytics. Page views in aggregate. n/a.
  • ph_<project>_posthogPostHog. Product usage, errors and performance in app.dmand.ai, used to fix bugs and improve features. 365 days.

Marketing

On unless you turn it off, and always off when your browser sends a Global Privacy Control signal. A visitor identification service tells our sales team which companies and people visit.

View cookies (6)
  • _reb2buid, _reb2butkRB2B. Recognizes a returning browser for visitor identification. 360 days, 1 year.
  • _reb2bgeoRB2B. The location used to decide whether a visit can be identified. 20 days.
  • _reb2brefRB2B. The page or site that referred the visit. 15 days.
  • _reb2bfxf, _reb2btd, _reb2bliRB2B. Links the visit to an identified business profile. 1 month.
  • _reb2bresolveRB2B. Holds a match while it is being resolved. 2 days.
  • _reb2sessionID, _reb2bloadedRB2B. The current visit, and a guard against loading the script twice. 30 minutes, 1 second.

Functional

On unless you turn it off. Remembers choices such as a collapsed section.

View cookies (none today)