Agata Kosmalska, MD
Obstetrics & Gynecology Physician · Fremont, CA
Agata Kosmalska, MD is an obstetrics & gynecology physician with a practice address in Fremont, California, and NPI 1831486679, issued on Jun 30, 2011. Check the license (California A124419, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Agata Kosmalska
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A124419 CA
Self-reported in NPPES; status is on the state search - Practice location
- 39400 Paseo Padre Pkwy, Fremont, CA 94538
- Phone
- (510) 248-3000
- Enumerated
- Jun 30, 2011
- Record last updated
- Jan 18, 2022
- Fax
- (510) 248-3466
- Medicare enrollment
- Enrolled (PECOS I20151111001815); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 39400 Paseo Padre Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Dolly Ahluwalia, RDRegistered Dietitian1659429157
- Tabassum Alam, MDHospitalist Physician1306921069
- Mary Alyono, MDAnesthesiology Physician1477631059
- Stephanie Aoki, PHDPsychologist1427721216
Verify Agata Kosmalska in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A124419Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
73 Medicare Part D claims for 39 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol26 claims
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.
Bills Medicare through one group practice
- Permanente Medical Group IncFremont, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Agata Kosmalska among 5,088 obstetrics & gynecology physician records in California
Agata Kosmalska, MD 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 2011, is newer than 72% of them.
- NPI issued2011 · 72% of these records are older, 25% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2011 · median 2004 among the 2,700 with a school on file
- Record last updated2022 · 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 Fremont → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Margie Aleman-Martin, MDFremont, CA 945381932180494
- Gene Barrie, MDFremont, CA 945381851369649
- Stacey Barrie, MDFremont, CA 945381841268646
- Irene Beissner, MDFremont, CA 945381922100908
- Siobhan Calhoun, MDFremont, CA 945381396726295
- Craig Johnson, MDFremont, CA 945381871561670
- Shakira Karipineni, MDFremont, CA 945381780684761
- Elizabeth Kurkjian, MDFremont, CA 945381598727414
Common questions
What is Agata Kosmalska, MD's NPI number?
Agata Kosmalska, MD's National Provider Identifier (NPI) is 1831486679, issued on Jun 30, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Agata Kosmalska, MD located?
The NPPES record lists a practice address at 39400 Paseo Padre Pkwy, Fremont, CA, 94538. Phone: (510) 248-3000. Providers update this record themselves, so call before visiting.
How can I verify Agata Kosmalska, MD's license?
NPPES lists California license number A124419, 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 Agata Kosmalska, MD prescribe under Medicare Part D?
In 2024, Agata Kosmalska, MD had 73 Medicare Part D claims for 39 beneficiaries; 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.