Dr. Mark Janssen, MD

  • Anaheim, CA
  • Pathologist
NPI1407923345
Publications
2
Clinical trials
2
State license
1
Year NPI issued
2006
Practice address
441 N Lakeview Ave, Anaheim, CA 92807-3028
Practice phone
Call (888) 988-2800
Professional email
Get professional email
Personal email
Get personal email
Mobile number
Get mobile number
Social profiles

Find Dr. Janssen'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. Mark Janssen is a pathologist in Anaheim, California

Dr. Janssen practices in Anaheim, California.

Dr. Janssen's NPI, 1407923345, was assigned on November 29, 2006. Dr. Janssen graduated from David Geffen School of Medicine at UCLA in 1970. Dr. Janssen's California license number on file is A24214.

NPI and contact details
NPI enumeration date
November 29, 2006
NPI status
Active
Practice phone
(888) 988-2800
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Medical school graduation
1970

Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data

Dr. Mark Janssen's practice address is in Anaheim, California

Dr. Janssen's practice address in the NPI Registry is 441 N Lakeview Ave, Anaheim, CA 92807-3028. The practice phone is (888) 988-2800.

  • NPI Registry address
    441 N Lakeview Ave, Anaheim, CA 92807-3028Phone(888) 988-2800

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dmand AI tracks the EHR system at Dr. Mark Janssen's practice

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

EHR by site
SiteEHR vendor and product
Dr. Janssen's practiceAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

See the EHR and IT leaders at every site where Dr. Janssen practices

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

Dr. Mark Janssen is one of 1,354 pathologists in California

Anatomic pathology and clinical pathology is Dr. Janssen's primary specialty in the NPI Registry, under taxonomy code 207ZP0102X. Dr. Janssen is board certified in anatomic pathology & clinical pathology by the American Board of Pathology. Dr. Janssen has a license on file in California.

Specialties and state licenses

  • Anatomic pathology and clinical pathology, CaliforniaPrimaryLicense A24214 · 1971 to 2023 · taxonomy 207ZP0102X

Pathologists near Dr. Janssen

Counts of pathologists 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. Mark Janssen has 2 publications on record

Dmand AI links 2 papers to Dr. Janssen. Dr. Janssen's most frequent co-authors are Sergio Huerta, MD and Daniel R. Marcus, MD.

Papers2

Dr. Janssen's most frequent co-authors

Recent publications by Dr. Janssen

See all 2 publications and co-authors

See who Dr. Janssen researches with

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

How network discovery works

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

Dr. Mark Janssen has worked on 2 clinical trials

Dmand AI links Dr. Janssen to 2 clinical trials. Conditions studied include Parkinson Disease, Tinnitus and Hearing Disorders. Maastricht University Medical Center sponsors the most, 2.

Conditions in Dr. Janssen's trials

  • Parkinson Disease
  • Tinnitus
  • Hearing Disorders
  • Parkinsonian Disorders

Recent clinical trials with Dr. Janssen

Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)

Dr. Mark Janssen graduated from David Geffen School of Medicine at UCLA

Dr. Janssen graduated from David Geffen School of Medicine at UCLA in 1970.

  1. Medical schoolDavid Geffen School of Medicine at UCLA
  2. Board certified in anatomic pathology & clinical pathologyAmerican Board of Pathology

Source: Dmand AI Professional Profile Data

Sources for Dr. Mark Janssen'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 phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Clinical trials and co-investigatorsDmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile 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. Mark Janssen

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. Mark Janssen's NPI number?

Dr. Mark Janssen's NPI number is 1407923345. It was assigned on November 29, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Mark Janssen?

Dr. Mark Janssen is a pathologist in Anaheim, California. The primary specialty in the NPI Registry is Anatomic Pathology & Clinical Pathology Physician (taxonomy code 207ZP0102X).

Where does Dr. Mark Janssen practice?

Dr. Janssen practices at 441 N Lakeview Ave, Anaheim, CA 92807-3028.

What is Dr. Mark Janssen's office phone number?

The practice phone on file for Dr. Janssen is (888) 988-2800.

What is Dr. Mark Janssen's medical license number?

Dr. Janssen's California license number on file is A24214.

Is Dr. Mark Janssen board certified?

Yes. Dr. Janssen is board certified in anatomic pathology & clinical pathology by the American Board of Pathology.

Where did Dr. Mark Janssen go to medical school?

Dr. Janssen graduated from David Geffen School of Medicine at UCLA in 1970.

How long has Dr. Mark Janssen been practicing?

Dr. Janssen graduated from medical school in 1970, 56 years ago.

Does Dr. Mark Janssen do research?

Dmand AI links 2 publications to Dr. Janssen. Dr. Janssen has worked on 2 clinical trials.

Who does Dr. Mark Janssen publish with?

Dr. Janssen's most frequent co-authors are Sergio Huerta, MD (1 shared paper) and Daniel R. Marcus, MD (1 shared paper).

Selling to anatomic pathology and clinical pathology practices?

See pathologists 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)