Elena Romana Siani, MD
Obstetrics & Gynecology Physician · Oakland, CA
Elena Romana Siani, MD is an obstetrics & gynecology physician with a practice address in Oakland, California, and NPI 1598299299, issued on Apr 19, 2017. Check the license (California A173271, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Elena Romana Siani
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A173271 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3451 E 12TH St FL 2, Oakland, CA 94601
- Phone
- (510) 535-3500
- Enumerated
- Apr 19, 2017
- Record last updated
- Sep 2, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210907002059); accepts Medicare assignment
- Medical or professional school
- University Of Vermont College Of Medicine, 2017
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 3451 E 12TH St FL 2
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Efrain Michel, LCSWClinical Social Worker1508190539
- Angela Missaggia, N.P.Adult Health Nurse Practitioner1306110523
- Molly Rabinowitz, MDPediatrics Physician1023441623
- Mark Robb, MDInternal Medicine Physician1053499665
Verify Elena Romana Siani in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A173271Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
15 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.
Bills Medicare through one group practice
- LA Clinica DE LA Raza IncOakland, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Elena Romana Siani among 5,088 obstetrics & gynecology physician records in California
Elena Romana Siani, 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 2017, is newer than 87% of them.
- NPI issued2017 · 87% of these records are older, 10% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2017 · median 2004 among the 2,700 with a school on file
- Record last updated2021 · 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 Oakland → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Julia Bley, MDOakland, CA 946011831357177
- Hilary Eggers, MDOakland, CA 946011770089591
- Sara Johnson, M.D.Oakland, CA 946011811125016
- Thuy Le, MDOakland, CA 946011831551910
- Stacy Paar, MDOakland, CA 946011871086017
- Susan Sykes, MDOakland, CA 946011326182957
- Karbo Tam, M.D.Oakland, CA 946011659553410
- Samantha Varner, MDOakland, CA 946011982059077
Common questions
What is Elena Romana Siani, MD's NPI number?
Elena Romana Siani, MD's National Provider Identifier (NPI) is 1598299299, issued on Apr 19, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Elena Romana Siani, MD located?
The NPPES record lists a practice address at 3451 E 12TH St FL 2, Oakland, CA, 94601. Phone: (510) 535-3500. Providers update this record themselves, so call before visiting.
How can I verify Elena Romana Siani, MD's license?
NPPES lists California license number A173271, 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 Elena Romana Siani, MD prescribe under Medicare Part D?
In 2024, Elena Romana Siani, MD had 15 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.