Siobhan Harrington, M.D.
Anesthesiology Physician · Greenbrae, CA
Siobhan Harrington, M.D. is an anesthesiology physician with a practice address in Greenbrae, California, and NPI 1902068331, issued on Jun 26, 2008. Check the license (California A104594, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Siobhan Harrington
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- A104594 CA
Self-reported in NPPES; status is on the state search - Practice location
- 250 Bon Air RD, Greenbrae, CA 94904
- Phone
- (415) 925-7100
- Enumerated
- Jun 26, 2008
- Record last updated
- May 29, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100816000755); accepts Medicare assignment
- Medical or professional school
- Columbia University College Of Physicians And Surgeons, 2006
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →
Also registered at 250 Bon Air RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lisa Abrahams, MFTMarriage & Family Therapist1184738445
- Jory Adam, PA-CSurgical Physician Assistant1922269521
- Samuel Adams, MDHospitalist Physician1497785034
- Barbara Addleman, RNRegistered Nurse1053551267
- Linda Alexander, RNPsychiatric/Mental Health Registered Nurse1205589405
- Maxwell AlikinneyCounselor1538668728
Verify Siobhan Harrington in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A104594Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through 2 group practices
- Anesthesiology Consultants OF MarinGreenbrae, CA
- G2 Anesthesia PCSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Siobhan Harrington among 7,571 anesthesiology physician records in California
Siobhan Harrington, M.D. is one of 7,571 anesthesiology physician records with a practice address in California. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 57% of them.
- NPI issued2008 · 57% of these records are older, 39% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2006 · median 2006 among the 4,868 with a school on file
- Record last updated2018 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
46 anesthesiology physician records list a practice address in Greenbrae
They are 46 of the 727 NPPES records with a practice address in Greenbrae, and 7,571 anesthesiology physician records in California.
All 7,571 in California → Every provider in Greenbrae → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- T Benson, M.D.Greenbrae, CA 949041720016637
- James Brandes, M.D.Greenbrae, CA 949041417985334
- Keith Chamberlin, M.D.Greenbrae, CA 949041265544654
- Anthony Chiu, M.D.Greenbrae, CA 949041437269495
- Christophe Dinello, M.D.Greenbrae, CA 949041730270620
- Benjamin Hu, MDGreenbrae, CA 949041487691143
- Sonali Joshi, MDGreenbrae, CA 949041639281751
- Patrick Kwan, M.D.Greenbrae, CA 949041164468286
Common questions
What is Siobhan Harrington, M.D.'s NPI number?
Siobhan Harrington, M.D.'s National Provider Identifier (NPI) is 1902068331, issued on Jun 26, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Siobhan Harrington, M.D. located?
The NPPES record lists a practice address at 250 Bon Air RD, Greenbrae, CA, 94904. Phone: (415) 925-7100. Providers update this record themselves, so call before visiting.
How can I verify Siobhan Harrington, M.D.'s license?
NPPES lists California license number A104594, 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.
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.