Dr. Katherine E. Tierney, MD
- Part D claims, 2024
- 38
- Publications
- 5
- Hospital affiliations
- 1
- Industry payments
- $141
- Medical groups
- 2
- Practice address
- 2051 Marengo St, Room C2K100, Los Angeles, CA 90033
- Practice phone
- Call (323) 226-2800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Tierney'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. Katherine E. Tierney is a gynecologic oncologist in Los Angeles, California
Dr. Tierney practices at Los Angeles General Medical Center in Los Angeles, California, part of County of Los Angeles.
Dr. Tierney's NPI, 1669702502, was assigned on December 26, 2009. Dr. Tierney graduated from Keck School of Medicine of USC in 2008. Dr. Tierney's California license number on file is A110278.
- NPI
- 1669702502NPI Registry (opens in a new tab)
- NPI enumeration date
- December 26, 2009
- NPI status
- Active
- Practice phone
- (323) 226-2800
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Katherine E. Tierney practices at Los Angeles General Medical Center in Los Angeles, California
Dr. Tierney's primary practice is Los Angeles General Medical Center, at 2051 Marengo St, Room C2K100, Los Angeles, CA 90033 in Los Angeles County. The practice phone is (323) 226-2800.
- Los Angeles General Medical Center2051 Marengo St, Room C2K100, Los Angeles, CA 90033 · Los Angeles CountyPhone(323) 226-2800
Source: Dmand AI Affiliation Data
Dr. Katherine E. Tierney is affiliated with 2 sites of care and 2 medical groups
Dr. Tierney's primary practice is Los Angeles General Medical Center in Los Angeles, California, part of County of Los Angeles. The medical group on file is USC Care Medical Group. Dmand AI also links Dr. Tierney to 1 more group practice or clinic and 1 medical group, each named with a free account. Dr. Tierney'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 Dr. Katherine E. Tierney's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tierney practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Los Angeles General Medical Center | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Katherine E. Tierney is one of 178 gynecologic oncologists in California
Gynecologic oncology is Dr. Tierney's primary specialty in the NPI Registry, under taxonomy code 207VX0201X. Dr. Tierney is board certified in gynecologic oncology by the American Board of Obstetrics and Gynecology. Dmand AI has Dr. Tierney's licenses on file in 3 states: California, Oregon and Washington.
Specialties and state licenses
- Gynecologic oncology, CaliforniaPrimary
- Oregon license
- Washington license
Gynecologic oncologists near Dr. Tierney
Counts of gynecologic oncologists 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. Katherine E. Tierney's patients have a median age of 58
Across all payers, Dmand AI patient panel data puts Dr. Tierney's median patient age at 58, with 98% women.
Dr. Tierney's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women98%
- Men2%
Source: Dmand AI Patient Panel Data
Dr. Katherine E. Tierney wrote 38 Medicare Part D claims in 2024
In 2024, Dr. Tierney wrote 38 Medicare Part D claims for 27 patients. 97% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $82 in total drug cost. In 2023, CMS named 21 claims across 1 drug.
Dr. Tierney's Part D claims by kind of drug, 2024
- Generic37 claims97%
- Brand-name and other1 claims3%
Dr. Tierney'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 Dr. Tierney's Part D claims, 2024
- Opioids42%16 of 38 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: 212024: 1338%
Drugs named by CMS: 1 in 2024, 1 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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Dr. Katherine E. Tierney has 5 publications on record
Dmand AI links 5 papers to Dr. Tierney, published from 2012 to 2015. 2015 was the busiest year, with 3. Dr. Tierney's most frequent co-authors are Lynda D. Roman, MD, Koji Matsuo, MD and Laila I. Muderspach, MD.
Dr. Tierney's papers by year, 2012 to 2015
Dr. Tierney's most frequent co-authors
- Lynda D. Roman, MD3 shared papers
- Koji Matsuo, MD2 shared papers
- Laila I. Muderspach, MD2 shared papers
Recent publications by Dr. Tierney
See who Dr. Tierney researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Tierney works with, so you can find a warm path to the right gynecologic oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Katherine E. Tierney received $141 in industry payments in 2024
CMS Open Payments shows 2 general payments to Dr. Tierney from 2 drug and device companies in 2024. Food and beverage make up the largest share, 100% of the total. GlaxoSmithKline, LLC. paid the most, $125.
Companies that paid Dr. Tierney the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Katherine E. Tierney graduated from Keck School of Medicine of USC
Dr. Tierney graduated from Keck School of Medicine of USC in 2008.
- Medical school
- Board certified in gynecologic oncology
- Board certified in obstetrics & gynecology
Source: Dmand AI Professional Profile Data
Dr. Katherine E. Tierney accepts plans from 2 insurance carriers
Dr. Tierney is in network with 2 carriers, including Aetna and Regence Health Plans. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
- Aetna
- Regence Health Plans
Plan types Dr. Tierney accepts, by number of carriers
- Medicare2
- PPO2
- EPO1
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Katherine E. Tierney'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) |
| 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) |
| 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. Katherine E. Tierney
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. Katherine E. Tierney's NPI number?
Dr. Katherine E. Tierney's NPI number is 1669702502. It was assigned on December 26, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Katherine E. Tierney?
Dr. Katherine E. Tierney is a gynecologic oncologist in Los Angeles, California. The primary specialty in the NPI Registry is Gynecologic Oncology Physician (taxonomy code 207VX0201X).
Where does Dr. Katherine E. Tierney practice?
Dr. Tierney practices at 2051 Marengo St, Room C2K100, Los Angeles, CA 90033. Dr. Tierney's primary practice is Los Angeles General Medical Center in Los Angeles, California, part of County of Los Angeles. Dmand AI also links Dr. Tierney to 1 group practice or clinic and 1 medical group.
What is Dr. Katherine E. Tierney's office phone number?
The practice phone on file for Dr. Tierney is (323) 226-2800.
What is Dr. Katherine E. Tierney's medical license number?
Dr. Tierney's California license number on file is A110278, one of the licenses on file in 3 states.
Which states has Dr. Katherine E. Tierney been licensed in?
Dmand AI has state licenses on file for Dr. Tierney in California (2023 to 2025), Oregon (2016 to 2025) and Washington (2016 to 2025).
Which hospitals is Dr. Katherine E. Tierney affiliated with?
Dr. Tierney practices at Los Angeles General Medical Center in Los Angeles, California.
What medical group is Dr. Katherine E. Tierney part of?
Dr. Tierney is linked to USC Care Medical Group. Dmand AI links Dr. Tierney to 1 more medical group.
Is Dr. Katherine E. Tierney board certified?
Yes. Dr. Tierney is board certified in gynecologic oncology by the American Board of Obstetrics and Gynecology.
Where did Dr. Katherine E. Tierney go to medical school?
Dr. Tierney graduated from Keck School of Medicine of USC in 2008.
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What drugs does Dr. Katherine E. Tierney prescribe most?
In 2024 Medicare Part D data, Dr. Tierney's most prescribed drugs by claims were Oxycodone HCl.
Has Dr. Katherine E. Tierney received payments from drug or device companies?
CMS Open Payments shows $141 in general payments to Dr. Tierney from 2 companies from 2024 to 2024. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. Katherine E. Tierney been practicing?
Dr. Tierney graduated from medical school in 2008, 18 years ago.
Does Dr. Katherine E. Tierney do research?
Dmand AI links 5 publications to Dr. Tierney, published from 2012 to 2015.
Who does Dr. Katherine E. Tierney publish with?
Dr. Tierney's most frequent co-authors are Lynda D. Roman, MD (3 shared papers), Koji Matsuo, MD (2 shared papers) and Laila I. Muderspach, MD (2 shared papers).
What insurance does Dr. Katherine E. Tierney accept?
Dr. Tierney is in network with 2 carriers, including Aetna and Regence Health Plans. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
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