Dr. Brenda C. Eiser, MD
- Part D claims, 2024
- 113
- Industry payments
- $217
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2009
- Practice address
- 3801 Katella Ave, Los Alamitos, CA 90720
- Practice phone
- Call (562) 344-7777
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Prohealth Partners, a Medical Group, Inc.
Los Alamitos, California
Find Dr. Eiser's professional email, personal email and mobile number
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Dr. Brenda C. Eiser is an internist in Los Alamitos, California
Dr. Eiser practices at Prohealth Partners, a Medical Group, Inc. in Los Alamitos, California.
Dr. Eiser's NPI, 1215164181, was assigned on June 17, 2009. Dr. Eiser holds Colorado license 51326.
- NPI
- 1215164181NPI Registry (opens in a new tab)
- NPI enumeration date
- June 17, 2009
- NPI status
- Active
- Practice phone
- (562) 344-7777
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Brenda C. Eiser practices at Prohealth Partners, a Medical Group, Inc. in Los Alamitos, California
Dr. Eiser's primary practice is Prohealth Partners, a Medical Group, Inc., at 3801 Katella Ave, Los Alamitos, CA 90720 in Orange County. The practice phone is (562) 344-7777.
- Prohealth Partners, a Medical Group, Inc.3801 Katella Ave, Los Alamitos, CA 90720 · Orange CountyPhone(562) 344-7777
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Brenda C. Eiser is affiliated with 1 site of care and 1 medical group
Dr. Eiser's primary practice is Prohealth Partners, a Medical Group, Inc. in Los Alamitos, California. The medical group on file is Colorado Permanente Medical Group.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Brenda C. Eiser's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Eiser practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Prohealth Partners, a Medical Group, Inc. | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Brenda C. Eiser is one of 16,751 internists in California
Internal medicine is Dr. Eiser's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Eiser is licensed in Colorado.
Specialties and state licenses
- Internal medicine, ColoradoPrimary
Internists near Dr. Eiser
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
Dr. Brenda C. Eiser's patients have a median age of 74
Across all payers, Dmand AI patient panel data puts Dr. Eiser's median patient age at 74, with 54% women.
Dr. Eiser's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women54%
- Men46%
Source: Dmand AI Patient Panel Data
Dr. Brenda C. Eiser wrote 113 Medicare Part D claims in 2024
In 2024, Dr. Eiser wrote 113 Medicare Part D claims for 61 patients. 82% of them were for generic drugs. CMS names the drug for 98 of them, across 6 drugs with 11 or more claims each, at $12,357 in total drug cost. In 2021, CMS named 64 claims across 4 drugs.
Dr. Eiser's Part D claims by kind of drug, 2024
- Generic93 claims82%
- Brand-name20 claims18%
Dr. Eiser's most prescribed drugs by claims, 2022
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 Dr. Eiser's Part D claims, 2024
- Antibiotics19%21 of 113 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, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 642022: 9853%
Drugs named by CMS: 6 in 2022, 4 in 2021.
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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Dr. Brenda C. Eiser received $217 in industry payments in 2023
CMS Open Payments shows 1 general payment to Dr. Eiser from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. Inari Medical, Inc. paid the most, $217.
Companies that paid Dr. Eiser the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Brenda C. Eiser'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 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 Dr. Brenda C. Eiser
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. Brenda C. Eiser's NPI number?
Dr. Brenda C. Eiser's NPI number is 1215164181. It was assigned on June 17, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Brenda C. Eiser?
Dr. Brenda C. Eiser is an internist in Los Alamitos, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Brenda C. Eiser practice?
Dr. Eiser practices at 3801 Katella Ave, Los Alamitos, CA 90720. Dr. Eiser's primary practice is Prohealth Partners, a Medical Group, Inc. in Los Alamitos, California.
What is Dr. Brenda C. Eiser's office phone number?
The practice phone on file for Dr. Eiser is (562) 344-7777.
What is Dr. Brenda C. Eiser's medical license number?
Dr. Eiser holds Colorado license 51326.
What medical group is Dr. Brenda C. Eiser part of?
Dr. Eiser is linked to Colorado Permanente Medical Group.
What drugs does Dr. Brenda C. Eiser prescribe most?
In 2022 Medicare Part D data, Dr. Eiser's most prescribed drugs by claims were Pradaxa, Amoxicillin-Clavulanate Potass and Levofloxacin.
Has Dr. Brenda C. Eiser received payments from drug or device companies?
CMS Open Payments shows $217 in general payments to Dr. Eiser from 1 company from 2023 to 2023. The largest total came from Inari Medical, Inc.
How long has Dr. Brenda C. Eiser been practicing?
Dr. Eiser graduated from medical school in 2009, 17 years ago.
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