Katharine M. Ciesielski
Obstetrics & Gynecology Physician · Los Angeles, CA
Katharine M. Ciesielski is an obstetrics & gynecology physician with a practice address in Los Angeles, California, and NPI 1093211633, issued on Apr 3, 2018. Check the license (California A165365, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Katharine M. Ciesielski
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- A165365 CA
4301506812 MI
Self-reported in NPPES; status is on the state search - Practice location
- 444 S San Vicente Blvd Ste 1003, Los Angeles, CA 90048
- Phone
- (310) 423-9268
- Enumerated
- Apr 3, 2018
- Record last updated
- Sep 10, 2024
- Fax
- (310) 423-9777
- Medicare enrollment
- Enrolled (PECOS I20240920003288); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 2018
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 444 S San Vicente Blvd Ste 1003
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gabriella Benhaghnazar, NPFamily Nurse Practitioner1679451975
- Ida DhanukaGynecology Physician1487235735
- Marlene Pires, NPFamily Nurse Practitioner1194489690
- Maya Shats, MDObstetrics & Gynecology Physician1649137761
- Kelly Wright, MDGynecology Physician1932390051
Verify Katharine M. Ciesielski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A165365Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
19 Medicare Part D claims, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $797.73
4 payments; by number, the most common kind was travel and lodging; the largest payer was Intuitive Surgical, Inc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
2 hospitals and group practices
- Cedars-Sinai Medical CenterLos Angeles, CA · Acute Care Hospitals5 of 5 stars
- Cedars-Sinai Medical Care FoundationBeverly Hills, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Katharine M. Ciesielski among 5,088 obstetrics & gynecology physician records in California
Katharine M. Ciesielski is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 90% of them.
- NPI issued2018 · 90% of these records are older, 8% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2018 · median 2004 among the 2,700 with a school on file
- Record last updated2024 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in California
There are 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Los Angeles → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Carolyn Alexander, M.D.Los Angeles, CA 900481073578332
- Paula Bernstein, MDWest Hollywood, CA 900481891788501
- Sushma Bhadauria, M.D.Los Angeles, CA 900481164472460
- Aminah Bliss, M.D.Los Angeles, CA 900481225087463
- Gregory Ewertz, M.D.Los Angeles, CA 900481841248143
- Kimberly Gregory, M.D.Los Angeles, CA 900481033192356
- Paul Hackmeyer, M.D.Los Angeles, CA 900481023042363
- Bryna Harwood, MDWest Hollywood, CA 900481255304044
Common questions
What is Katharine M. Ciesielski's NPI number?
Katharine M. Ciesielski's National Provider Identifier (NPI) is 1093211633, issued on Apr 3, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Katharine M. Ciesielski located?
The NPPES record lists a practice address at 444 S San Vicente Blvd Ste 1003, Los Angeles, CA, 90048. Phone: (310) 423-9268. Providers update this record themselves, so call before visiting.
How can I verify Katharine M. Ciesielski's license?
NPPES lists California license number A165365, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Katharine M. Ciesielski prescribe under Medicare Part D?
In 2024, Katharine M. Ciesielski had 19 Medicare Part D claims; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.