Leonard Dalag

  • San Jose, CA
  • Interventional radiologist
NPI1689043291PAC ID0547552663
Medicare services, 2024
447
Medicare patients, 2024
251
Publications
6
Hospital affiliations
5
Industry payments
$6,307
Practice address
751 South Bascom Avenue, San Jose, CA 95128
Practice phone
Call (408) 885-5000
Professional email
Get professional email
Personal email
Get personal email
Mobile number
Get mobile number
Social profiles

Primary practice

Santa Clara Valley Medical Center

Hospital · San Jose, California

See all 12 affiliations

Find Leonard Dalag'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

Leonard Dalag is an interventional radiologist in San Jose, California

Leonard Dalag practices at Santa Clara Valley Medical Center in San Jose, California, part of County of Santa Clara, CA.

Leonard Dalag's NPI, 1689043291, was assigned on September 24, 2015. Leonard Dalag holds California license A171850.

NPI and contact details
Medicare PAC ID
0547552663
NPI enumeration date
September 24, 2015
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(408) 885-5000
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
37
Medical school graduation
2015

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

Leonard Dalag practices at Santa Clara Valley Medical Center in San Jose, California

Leonard Dalag's primary practice is Santa Clara Valley Medical Center, at 751 South Bascom Avenue, San Jose, CA 95128 in Santa Clara County. The practice phone is (408) 885-5000.

Source: Dmand AI Affiliation Data

Leonard Dalag is affiliated with 8 sites of care and 4 medical groups

Leonard Dalag's primary practice is Santa Clara Valley Medical Center in San Jose, California, part of County of Santa Clara, CA. Leonard Dalag is also affiliated with Adventist Health Bakersfield. The medical group on file is County of Santa Clara Behavioral Health Services, Las Plumas Behavioral Health Clinic. Dmand AI also links Leonard Dalag to 3 more hospitals, 3 medical groups, 2 group practices and clinics and 1 community health center, each named with a free account.

See all 12 affiliations for Leonard Dalag

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

Dmand AI tracks the EHR system at Leonard Dalag's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Leonard Dalag practices, 8 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Santa Clara Valley Medical CenterAvailable with a free account
+7 more sites and 3 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

See the EHR and IT leaders at every hospital where Leonard Dalag practices

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

Leonard Dalag is one of 559 interventional radiologists in California

Vascular and interventional radiology is Leonard Dalag's primary specialty in the NPI Registry, under taxonomy code 2085R0204X. Dmand AI has Leonard Dalag's licenses on file in 2 states: California and Illinois.

Specialties and state licenses

  • Vascular and interventional radiology, CaliforniaPrimaryLicense A171850 · taxonomy 2085R0204X
  • Diagnostic radiology, IllinoisLicense 125.067931 · taxonomy 2085R0202X

Interventional radiologists near Leonard Dalag

Counts of interventional radiologists 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

Leonard Dalag billed Medicare for 447 services in 2024

CMS data shows 447 Medicare services from Leonard Dalag across 10 procedure codes in 2024, for 251 Medicare patients. Medicare paid $23,389 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024447
Medicare patients251
Paid by Medicare$23,389
Procedure codes10

Leonard Dalag's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Tests and treatments
2023: 1782024: 1907%
Surgery
2023: 1142024: 13821%
Imaging
2023: 1182024: 1191%

Leonard Dalag compared with the California median for interventional radiologists, 2024

  • Leonard Dalag
  • California median
Medicare services
447vs 83847% below
Medicare patients
251vs 43442% below

Medians across 511 interventional radiologists in California with Dmand AI profiles that report each measure.

Leonard Dalag'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 Leonard Dalag

Need commercial claims for Leonard Dalag?

Medicare shows one payer. Book a meeting to get commercial claims data for Leonard Dalag and other interventional radiologists in California.

Book a meeting

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

Leonard Dalag treated 251 Medicare patients in 2024, average age 69

CMS counts 251 Medicare patients who saw Leonard Dalag in 2024. The largest group is 65 to 74, with 102 patients. 75% of them have high blood pressure, and 72% have high cholesterol. 57% are also on Medicaid. Their average risk score is 3.99, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Leonard Dalag's median patient age at 48, with 58% women.

Medicare patients, 2024251
Average age69
Average risk score3.99
Also on Medicaid57%

Leonard Dalag's Medicare patients by age, 2024

Leonard Dalag's Medicare patients by sex, 2024

  • Women10140%
  • Men15060%

Chronic conditions among Leonard Dalag's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol72%
  3. Chronic kidney disease65%
  4. Arthritis56%
  5. Diabetes55%
  6. Ischemic heart disease52%
  7. Cancer36%
  8. Atrial fibrillation35%

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

Leonard Dalag's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 48

Patient panel by sex, all payers

  • Women58%
  • Men42%

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

How Leonard Dalag takes part in Medicare

Leonard Dalag accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

For MedTech and pharma teams

Find interventional radiologists like Leonard Dalag 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.

Leonard Dalag has 6 publications on record

Dmand AI links 6 papers to Leonard Dalag, published from 2015 to 2021. 2015 was the busiest year, with 2. Leonard Dalag's most frequent co-authors are Swar Hemant Shah, MD, Gregory A. Christoforidis, MD and Jonathan M. Lorenz.

Papers6
Years published2015 to 2021

Leonard Dalag's papers by year, 2015 to 2021

Leonard Dalag's most frequent co-authors

Recent publications by Leonard Dalag

See all 6 publications and co-authors

See who Leonard Dalag researches with

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

How network discovery works

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

Leonard Dalag received $6,307 in industry payments from 2016 to 2025

CMS Open Payments shows 64 general payments to Leonard Dalag from 13 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 63% of the total. Penumbra, Inc. paid the most, $2,883.

General payments to Leonard Dalag by program year, 2016 to 2025

General payments to Leonard Dalag by kind, 2016 to 2025

$6.3Kin total
  • Food and beverage$3,97463%
  • Travel and lodging$2,33337%

Companies that paid Leonard Dalag the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Leonard Dalag

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

Sources for Leonard Dalag'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)
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)
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 Leonard Dalag

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Leonard Dalag's NPI number?

Leonard Dalag's NPI number is 1689043291. It was assigned on September 24, 2015, and it is active in the NPI Registry.

What does Leonard Dalag specialize in?

Leonard Dalag is an interventional radiologist in San Jose, California. The primary specialty in the NPI Registry is Vascular & Interventional Radiology Physician (taxonomy code 2085R0204X).

Where does Leonard Dalag practice?

Leonard Dalag practices at 751 South Bascom Avenue, San Jose, CA 95128. Leonard Dalag's primary practice is Santa Clara Valley Medical Center in San Jose, California, part of County of Santa Clara, CA. Dmand AI also links Leonard Dalag to 3 hospitals, 3 medical groups, 2 group practices and clinics and 1 community health center.

What is Leonard Dalag's office phone number?

The practice phone on file for Leonard Dalag is (408) 885-5000.

What is Leonard Dalag's medical license number?

Leonard Dalag holds California license A171850, one of the licenses on file in 2 states.

Which states has Leonard Dalag been licensed in?

Dmand AI has state licenses on file for Leonard Dalag in California and Illinois.

Which hospitals is Leonard Dalag affiliated with?

Leonard Dalag practices at Santa Clara Valley Medical Center in San Jose, California. Leonard Dalag is also affiliated with Adventist Health Bakersfield. Dmand AI links Leonard Dalag to 3 more hospitals.

What medical group is Leonard Dalag part of?

Leonard Dalag is linked to County of Santa Clara Behavioral Health Services, Las Plumas Behavioral Health Clinic. Dmand AI links Leonard Dalag to 3 more medical groups.

Does Leonard Dalag accept Medicare?

Yes. CMS data shows Leonard Dalag billed Medicare for 447 services in 2024, and Leonard Dalag accepts Medicare assignment.

How many Medicare patients does Leonard Dalag see?

CMS counts 251 Medicare patients who saw Leonard Dalag in 2024, with an average age of 69.

Show 5 more questionsShow fewer questions

What services does Leonard Dalag bill to Medicare?

In 2024, Leonard Dalag's most billed Medicare services were special service (99152), ultrasound (76937) and radiation oncology (77001).

Has Leonard Dalag received payments from drug or device companies?

CMS Open Payments shows $6,307 in general payments to Leonard Dalag from 13 companies from 2016 to 2025. The largest total came from Penumbra, Inc.

How long has Leonard Dalag been practicing?

Leonard Dalag graduated from medical school in 2015, 11 years ago.

Does Leonard Dalag do research?

Dmand AI links 6 publications to Leonard Dalag, published from 2015 to 2021.

Who does Leonard Dalag publish with?

Leonard Dalag's most frequent co-authors are Swar Hemant Shah, MD (2 shared papers), Gregory A. Christoforidis, MD (1 shared paper) and Jonathan M. Lorenz (1 shared paper).

Selling to vascular and interventional radiology practices?

See interventional radiologists 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)