Doctor profile · Federal record

Dr. Kathleen Brennan, MD

Reproductive Endocrinology Physician (CMS: Obstetrics/Gynecology) · Obstetrics & Gynecology Physician · Santa Monica, CA

  • NPI 1306033741
  • Accepts Medicare
  • MIPS 77.3 / 100 · 2023
  • 22 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

Operates at 3 locations .

NPPES Updated May 11, 2026
Primary practice
1245 16Th St Ste 202
Santa Monica, CA 904041240
(310) 794-7274
Additional location
200 Medical Plz, Ste 430
Los Angeles, CA 900950001
Additional location
200 UCLA Medical Plz Ste 220
Los Angeles, CA 900958344
Mailing address
5767 W Century Blvd Ste 400
Los Angeles, CA 900455631

Credentials & registration

NPPES · NUCC
NPI registered
October 2007 — 19 yrs on file
Profile last updated
September 20, 2024
Year of graduation
2004 — 22 yrs since
Specialty taxonomy
207VE0102X — NUCC code
State license (1)
California #A94984
Medicaid
CA #00A949840

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1306033741. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$101
Transactions
1
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
EMD Serono, Inc. 1 $101.21

By nature of payment

Food and Beverage
$101

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
37
Patients
0
Total drug cost
$5,607
Drug Type Claims Patients Total cost
Progesterone (Progesterone, Micronized) Brand 14 0 $2,416
Combipatch (Estradiol/Norethindrone Acet) Brand 12 0 $2,930
Metformin Hcl Er (Metformin Hcl) Brand 11 0 $261

Frequently asked questions

Auto-generated from federal data
What is Dr. Kathleen Brennan's medical specialty?
Dr. Kathleen Brennan practices Reproductive Endocrinology Physician in Santa Monica, CA.
Where does Dr. Kathleen Brennan practice?
Dr. Kathleen Brennan practices at 1245 16Th St Ste 202, Santa Monica, CA 904041240. Office phone: 3107947274.
What is Dr. Kathleen Brennan's NPI?
Dr. Kathleen Brennan's National Provider Identifier (NPI) is 1306033741, issued by NPPES.
Does Dr. Kathleen Brennan accept Medicare assignment?
Yes. Dr. Kathleen Brennan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.