Mark Vanhandel
- Part D claims, 2024
- 1,846
- Hospital affiliations
- 1
- Industry payments
- $149
- Medical group
- 1
- State license
- 1
- Practice address
- 2500 Alhambra Avenue, Martinez, CA 94553
- Practice phone
- Call (925) 370-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Mark Vanhandel is an internist in Martinez, California
Mark Vanhandel practices at Contra Costa Regional Medical Center in Martinez, California, part of State of California.
Mark Vanhandel's NPI, 1477678621, was assigned on March 20, 2007. Mark Vanhandel holds California license G79117.
- NPI
- 1477678621NPI Registry (opens in a new tab)
- NPI enumeration date
- March 20, 2007
- NPI status
- Active
- Practice phone
- (925) 370-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Mark Vanhandel practices at Contra Costa Regional Medical Center in Martinez, California
Mark Vanhandel's primary practice is Contra Costa Regional Medical Center, at 2500 Alhambra Avenue, Martinez, CA 94553 in Contra Costa County. The practice phone is (925) 370-5000.
- Contra Costa Regional Medical Center2500 Alhambra Avenue, Martinez, CA 94553 · Contra Costa CountyPhone(925) 370-5000
Source: Dmand AI Affiliation Data
Mark Vanhandel is affiliated with 1 site of care and 1 medical group
Mark Vanhandel's primary practice is Contra Costa Regional Medical Center in Martinez, California, part of State of California. The medical group on file is West County Adult Mental Health Services. Mark Vanhandel's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Mark Vanhandel's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mark Vanhandel practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Contra Costa Regional Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Mark Vanhandel is one of 16,751 internists in California
Internal medicine is Mark Vanhandel's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Mark Vanhandel is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Mark Vanhandel
Counts of internists 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
Mark Vanhandel's patients have a median age of 69
Across all payers, Dmand AI patient panel data puts Mark Vanhandel's median patient age at 69, with 66% women.
Mark Vanhandel's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women66%
- Men34%
Source: Dmand AI Patient Panel Data
Mark Vanhandel wrote 1,846 Medicare Part D claims in 2024
In 2024, Mark Vanhandel wrote 1,846 Medicare Part D claims for 239 patients. 90% of them were for generic drugs. CMS names the drug for 1,580 of them, across 46 drugs with 11 or more claims each, at $251,115 in total drug cost. In 2023, CMS named 1,412 claims across 41 drugs.
Mark Vanhandel's Part D claims by kind of drug, 2024
- Generic1,663 claims90%
- Brand-name183 claims10%
Mark Vanhandel'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 Mark Vanhandel's Part D claims, 2024
- Opioids1%16 of 1,846 claims
- Antipsychotics, patients 65 and over1%14 of 1,846 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: 1,4122024: 1,58012%
Drugs named by CMS: 46 in 2024, 41 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
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Mark Vanhandel received $149 in industry payments in 2024
CMS Open Payments shows 2 general payments to Mark Vanhandel from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $149.
Companies that paid Mark Vanhandel the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Mark Vanhandel'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Mark Vanhandel
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Mark Vanhandel's NPI number?
Mark Vanhandel's NPI number is 1477678621. It was assigned on March 20, 2007, and it is active in the NPI Registry.
What does Mark Vanhandel specialize in?
Mark Vanhandel is an internist in Martinez, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Mark Vanhandel practice?
Mark Vanhandel practices at 2500 Alhambra Avenue, Martinez, CA 94553. Mark Vanhandel's primary practice is Contra Costa Regional Medical Center in Martinez, California, part of State of California.
What is Mark Vanhandel's office phone number?
The practice phone on file for Mark Vanhandel is (925) 370-5000.
What is Mark Vanhandel's medical license number?
Mark Vanhandel holds California license G79117.
Which hospitals is Mark Vanhandel affiliated with?
Mark Vanhandel practices at Contra Costa Regional Medical Center in Martinez, California.
What medical group is Mark Vanhandel part of?
Mark Vanhandel is linked to West County Adult Mental Health Services.
What drugs does Mark Vanhandel prescribe most?
In 2024 Medicare Part D data, Mark Vanhandel's most prescribed drugs by claims were Gabapentin, Rizatriptan and Sumatriptan Succinate.
Has Mark Vanhandel received payments from drug or device companies?
CMS Open Payments shows $149 in general payments to Mark Vanhandel from 1 company from 2024 to 2024. The largest total came from Abbvie Inc.
How long has Mark Vanhandel been practicing?
Mark Vanhandel's NPI was assigned in 2007.
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