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Dr. Kathleen Marie Brennan, MD
NPI1306033741PAC ID5799845608
- Part D claims, 2024
- 28
- Publications
- 16
- MIPS score, 2024
- 84
- Industry payments
- $116
- Affiliated sites
- 1
- Practice address
- 200 Medical Plz, Los Angeles, CA 90024
- Practice phone
- Call (310) 794-9206
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Peter Morton UCLA Medical Building
Los Angeles, California
Find Dr. Brennan'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.
Dr. Kathleen Marie Brennan is a reproductive endocrinology physician in Los Angeles, California
Dr. Brennan practices at Peter Morton UCLA Medical Building in Los Angeles, California.
Dr. Brennan's NPI, 1306033741, was assigned on October 1, 2007. Dr. Brennan graduated from UNMC in 2004. Dr. Brennan holds California license A94984.
NPI and contact details
- NPI
- 1306033741NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5799845608
- NPI enumeration date
- October 1, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (310) 794-9206
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Kathleen Marie Brennan practices at Peter Morton UCLA Medical Building in Los Angeles, California
Dr. Brennan's primary practice is Peter Morton UCLA Medical Building, at 200 Medical Plz, Los Angeles, CA 90024 in Los Angeles County. The practice phone is (310) 794-9206.
- Peter Morton UCLA Medical Building200 Medical Plz, Los Angeles, CA 90024 · Los Angeles CountyPhone(310) 794-9206
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Kathleen Marie Brennan is affiliated with 2 sites of care and 1 medical group
Dr. Brennan's primary practice is Peter Morton UCLA Medical Building in Los Angeles, California. The medical group on file is UCLA Health Westwood OBGYN. Dmand AI also links Dr. Brennan to 1 more group practice or clinic, named with a free account.
Peter Morton UCLA Medical BuildingPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Kathleen Marie Brennan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Brennan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Peter Morton UCLA Medical Building | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Kathleen Marie Brennan is one of 219 reproductive endocrinology physicians in California
Reproductive endocrinology is Dr. Brennan's primary specialty in the NPI Registry, under taxonomy code 207VE0102X. Dr. Brennan is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology. Dr. Brennan is licensed in California.
Specialties and state licenses
- Reproductive endocrinology, CaliforniaPrimary
Reproductive endocrinology physicians near Dr. Brennan
Counts of reproductive endocrinology physicians with a Dmand AI profile, by place and practice. Each opens the list.
219reproductive endocrinology physicians in California15reproductive endocrinology physicians in Los Angeles
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Kathleen Marie Brennan's patients have a median age of 37
Across all payers, Dmand AI patient panel data puts Dr. Brennan's median patient age at 37, with 93% women.
Dr. Brennan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 37
Patient panel by sex, all payers
- Women93%
- Men5%
Source: Dmand AI Patient Panel Data
Dr. Kathleen Marie Brennan wrote 28 Medicare Part D claims in 2024
In 2024, Dr. Brennan wrote 28 Medicare Part D claims. 86% of them were for generic drugs. CMS names the drug for 25 of them, across 2 drugs with 11 or more claims each, at $457 in total drug cost. In 2023, CMS named 37 claims across 3 drugs.
Part D claims, 202428
Drugs named by CMS2
Total drug cost$457
Dr. Brennan's Part D claims by kind of drug, 2024
- Generic24 claims86%
- Brand-name and other4 claims14%
Dr. Brennan'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 372024: 2532%
Drugs named by CMS: 2 in 2024, 3 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
Dr. Kathleen Marie Brennan scored 84 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Brennan for performance year 2024, reported as part of a group. Dr. Brennan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Brennan's MIPS scores, performance year 2024
- 84of 100Final score
- 76.3of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 68of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Kathleen Marie Brennan has 16 publications on record
Dmand AI links 16 papers to Dr. Brennan, published from 2010 to 2020. 2013 was the busiest year, with 4. The most frequent topics are Postmenopause, Black or African American and Body Mass Index. Dr. Brennan's most frequent co-authors are Ricardo Azziz, MD, Joann E. Manson, MD and Wendy Allen-Rhoades, MD.
Papers16
Years published2010 to 2020
Dr. Brennan's papers by year, 2010 to 2020
Topics Dr. Brennan writes about most
- Postmenopause
- Black or African American
- Body Mass Index
- Disease Models, Animal
- Estradiol
- Ethnicity
- Fatty Acids
- Leptin
Dr. Brennan's most frequent co-authors
- Ricardo Azziz, MD2 shared papers
- Joann E. Manson, MD2 shared papers
- Wendy Allen-Rhoades, MD1 shared paper
Recent publications by Dr. Brennan
Asian PeopleBlack or African AmericanEstradiol
J Womens Health (Larchmt)
Body Mass IndexEstradiolLeptin
See who Dr. Brennan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Brennan works with, so you can find a warm path to the right reproductive endocrinology physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Kathleen Marie Brennan received $116 in industry payments from 2018 to 2024
CMS Open Payments shows 2 general payments to Dr. Brennan from 2 drug and device companies from 2018 to 2024. Food and beverage make up the largest share, 100% of the total. EMD Serono, Inc. paid the most, $101.
General payments to Dr. Brennan by program year, 2018 to 2024
Companies that paid Dr. Brennan the most, 2018 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Kathleen Marie Brennan has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Brennan, most recently American Board of Obstetrics and Gynecology Subspecialty Board Examiner in 2024.
Awards and honors for Dr. Brennan
- 2024
- American Board of Obstetrics and Gynecology Subspecialty Board Examiner
- Undated
- ACOG Fellow
Source: Dmand AI Professional Profile Data
Dr. Kathleen Marie Brennan graduated from UNMC
Dr. Brennan graduated from UNMC in 2004. Dr. Brennan is a member of American College of Obstetricians and Gynecologists and ASRM.
- Medical school
- Board certified in obstetrics & gynecology
- Board certified in reproductive endocrinology/infertility
Source: Dmand AI Professional Profile Data
Dr. Kathleen Marie Brennan accepts plans from 13 insurance carriers
Dr. Brennan is in network with 13 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +5 more carriersWith a free account
Plan types Dr. Brennan accepts, by number of carriers
- PPO9
- HMO7
- Medicare7
- EPO4
- POS4
Source: Dmand AI Insurance Network Data
Sources for Dr. Kathleen Marie Brennan'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) |
| 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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 Dr. Kathleen Marie Brennan
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. Kathleen Marie Brennan's NPI number?
Dr. Kathleen Marie Brennan's NPI number is 1306033741. It was assigned on October 1, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Kathleen Marie Brennan?
Dr. Kathleen Marie Brennan is a reproductive endocrinology physician in Los Angeles, California. The primary specialty in the NPI Registry is Reproductive Endocrinology Physician (taxonomy code 207VE0102X).
Where does Dr. Kathleen Marie Brennan practice?
Dr. Brennan practices at 200 Medical Plz, Los Angeles, CA 90024. Dr. Brennan's primary practice is Peter Morton UCLA Medical Building in Los Angeles, California. Dmand AI also links Dr. Brennan to 1 group practice or clinic.
What is Dr. Kathleen Marie Brennan's office phone number?
The practice phone on file for Dr. Brennan is (310) 794-9206.
What is Dr. Kathleen Marie Brennan's medical license number?
Dr. Brennan holds California license A94984.
What medical group is Dr. Kathleen Marie Brennan part of?
Dr. Brennan is linked to UCLA Health Westwood OBGYN.
Does Dr. Kathleen Marie Brennan accept Medicare?
Yes. CMS lists Dr. Brennan as accepting Medicare assignment.
What is Dr. Kathleen Marie Brennan's MIPS score?
Dr. Brennan's MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.
Is Dr. Kathleen Marie Brennan board certified?
Yes. Dr. Brennan is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology.
Where did Dr. Kathleen Marie Brennan go to medical school?
Dr. Brennan graduated from UNMC in 2004.
Show 6 more questionsShow fewer questions
What drugs does Dr. Kathleen Marie Brennan prescribe most?
In 2024 Medicare Part D data, Dr. Brennan's most prescribed drugs by claims were Progesterone and Metformin HCl ER.
Has Dr. Kathleen Marie Brennan received payments from drug or device companies?
CMS Open Payments shows $116 in general payments to Dr. Brennan from 2 companies from 2018 to 2024. The largest total came from EMD Serono, Inc.
How long has Dr. Kathleen Marie Brennan been practicing?
Dr. Brennan graduated from medical school in 2004, 22 years ago.
Does Dr. Kathleen Marie Brennan do research?
Dmand AI links 16 publications to Dr. Brennan, published from 2010 to 2020.
Who does Dr. Kathleen Marie Brennan publish with?
Dr. Brennan's most frequent co-authors are Ricardo Azziz, MD (2 shared papers), Joann E. Manson, MD (2 shared papers) and Wendy Allen-Rhoades, MD (1 shared paper).
What insurance does Dr. Kathleen Marie Brennan accept?
Dr. Brennan is in network with 13 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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