Mark Ian Brenis, DPM
- Medicare patients, 2024
- 808
- Part D claims, 2024
- 147
- MIPS score, 2024
- 89
- Industry payments
- $186
- Affiliated sites
- 2
- Practice address
- 20130 Lake Chabot Rd, Castro Valley, CA 94546
- Practice phone
- Call (510) 889-1700
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Associated Urology Medical Group,Inc.
Castro Valley, California
Find Mark Brenis' 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.
Mark Ian Brenis is a podiatrist in Castro Valley, California
Mark Brenis practices at Associated Urology Medical Group,Inc. in Castro Valley, California.
Mark Brenis' NPI, 1801858048, was assigned on April 4, 2006. Mark Brenis graduated from Kent State University College of Podiatric Medicine in 1983. Mark Brenis holds California license E3289.
- NPI
- 1801858048NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5698837391
- NPI enumeration date
- April 4, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (510) 889-1700
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 69
- Medical school graduation
- 1983
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Mark Ian Brenis practices at Associated Urology Medical Group,Inc. in Castro Valley, California
Mark Brenis' primary practice is Associated Urology Medical Group,Inc., at 20130 Lake Chabot Rd, Castro Valley, CA 94546 in Alameda County. The practice phone is (510) 889-1700.
- Associated Urology Medical Group,Inc.20130 Lake Chabot Rd, Castro Valley, CA 94546 · Alameda CountyPhone(510) 889-1700
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Mark Ian Brenis is affiliated with 3 sites of care and 2 medical groups
Mark Brenis' primary practice is Associated Urology Medical Group,Inc. in Castro Valley, California. The medical group on file is Bay Area Foot Care. Dmand AI also links Mark Brenis to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Mark Ian Brenis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mark Brenis practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Associated Urology Medical Group,Inc. | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Mark Ian Brenis is one of 745 podiatrists in California
Podiatrist is Mark Brenis' primary specialty in the NPI Registry, under taxonomy code 213E00000X. Mark Brenis is licensed in California.
Specialties and state licenses
- Podiatrist, CaliforniaPrimary
Podiatrists near Mark Brenis
Counts of podiatrists 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 Ian Brenis treated 808 Medicare patients in 2024, average age 78
CMS counts 808 Medicare patients who saw Mark Brenis in 2024. The largest group is 75 to 84, with 293 patients. 75% of them have high blood pressure, and 74% have high cholesterol. 35% are also on Medicaid. Their average risk score is 1.46, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Mark Brenis' median patient age at 63, with 48% women.
Mark Brenis' Medicare patients by age, 2024
Mark Brenis' Medicare patients by sex, 2024
- Women42052%
- Men38848%
Chronic conditions among Mark Brenis' Medicare patients, 2024
- High blood pressure75%
- High cholesterol74%
- Arthritis47%
- Diabetes45%
- Chronic kidney disease30%
- Ischemic heart disease24%
- Mood disorders24%
- Atrial fibrillation23%
Share of Medicare patients with each condition. A patient can have several.
Mark Brenis' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women48%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Mark Ian Brenis wrote 147 Medicare Part D claims in 2024
In 2024, Mark Brenis wrote 147 Medicare Part D claims for 77 patients. 100% of them were for generic drugs.
Drug classes CMS tracks in Mark Brenis' Part D claims, 2024
- Antibiotics14%21 of 147 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Mark Ian Brenis scored 89 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Mark Brenis for performance year 2024, reported as part of a group. Mark Brenis accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 372 procedures of removal of nail tissue by Mark Brenis, more than 80% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Mark Brenis' MIPS scores, performance year 2024
- 89of 100Final score
- 68of 100Quality
- 99of 100Promoting Interoperability
- 40of 100Improvement Activities
- 75of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Mark Brenis ranks in Medicare procedure volume
- Removal of nail tissue
- 80th percentile372 procedures
- Removal or shaving of skin growth
- 74th percentile28 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Mark Ian Brenis received $186 in industry payments in 2025
CMS Open Payments shows 2 general payments to Mark Brenis from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Stryker Corporation paid the most, $140.
Companies that paid Mark Brenis the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Mark Ian Brenis graduated from Kent State University College of Podiatric Medicine
Mark Brenis graduated from Kent State University College of Podiatric Medicine in 1983.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Mark Ian Brenis'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| 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 (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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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 Mark Ian Brenis
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 Ian Brenis' NPI number?
Mark Ian Brenis' NPI number is 1801858048. It was assigned on April 4, 2006, and it is active in the NPI Registry.
What does Mark Ian Brenis specialize in?
Mark Ian Brenis is a podiatrist in Castro Valley, California. The primary specialty in the NPI Registry is Podiatrist (taxonomy code 213E00000X).
Where does Mark Ian Brenis practice?
Mark Brenis practices at 20130 Lake Chabot Rd, Castro Valley, CA 94546. Mark Brenis' primary practice is Associated Urology Medical Group,Inc. in Castro Valley, California. Dmand AI also links Mark Brenis to 2 group practices and clinics and 1 medical group.
What is Mark Ian Brenis' office phone number?
The practice phone on file for Mark Brenis is (510) 889-1700.
What is Mark Ian Brenis' medical license number?
Mark Brenis holds California license E3289.
What medical group is Mark Ian Brenis part of?
Mark Brenis is linked to Bay Area Foot Care. Dmand AI links Mark Brenis to 1 more medical group.
Does Mark Ian Brenis accept Medicare?
Yes. CMS lists Mark Brenis as accepting Medicare assignment.
What is Mark Ian Brenis' MIPS score?
Mark Brenis' MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.
How many Medicare patients does Mark Ian Brenis see?
CMS counts 808 Medicare patients who saw Mark Brenis in 2024, with an average age of 78.
Where did Mark Ian Brenis go to medical school?
Mark Brenis graduated from Kent State University College of Podiatric Medicine in 1983.
Has Mark Ian Brenis received payments from drug or device companies?
CMS Open Payments shows $186 in general payments to Mark Brenis from 2 companies from 2025 to 2025. The largest total came from Stryker Corporation.
How long has Mark Ian Brenis been practicing?
Mark Brenis graduated from medical school in 1983, 43 years ago.
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