Allison K. Duffy, M.D.
Anesthesiology Physician · San Ramon, CA
Allison K. Duffy, M.D. is an anesthesiology physician with a practice address in San Ramon, California, and NPI 1548484835, issued on Apr 11, 2007. Check the license (California A98122, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Allison K. Duffy
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- A98122 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2420 Camino Ramon, San Ramon, CA 94583
- Phone
- (415) 420-1694
- Enumerated
- Apr 11, 2007
- Record last updated
- Mar 29, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090812000625); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 2005
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →
Also registered at 2420 Camino Ramon
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Darin Allred, M.D.Anesthesiology Physician1598935942
- Samuel Anderson, M.D.Anesthesiology Physician1770708554
- Amir Manuchehry, M,D,Anesthesiology Physician1407990906
- Kathleen Newcomb, MDAnesthesiology Physician1669418034
- Chinh Tran, M.D.Anesthesiology Physician1821254616
Verify Allison K. Duffy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A98122Check 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 one group practice
- G2 Anesthesia PCSan Jose, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Allison K. Duffy among 7,571 anesthesiology physician records in California
Allison K. Duffy, 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 2007, is newer than 47% of them.
- NPI issued2007 · 47% of these records are older, 43% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2005 · median 2006 among the 4,868 with a school on file
- Record last updated2009 · 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).
20 anesthesiology physician records list a practice address in San Ramon
They are 20 of the 2,281 NPPES records with a practice address in San Ramon, and 7,571 anesthesiology physician records in California.
All 7,571 in California → Every provider in San Ramon → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Mir Ali, M.D.San Ramon, CA 945831417912726
- Samuel Anderson, M.D.San Ramon, CA 945831770708554
- Julia Ankunding, M.D.San Ramon, CA 945831265440770
- Arne Brock-Utne, MDSan Ramon, CA 945831326087750
- Robin Dennings, M.D.San Ramon, CA 945831649265349
- Robert Donatiello, MDSan Ramon, CA 945831922183979
- Johnica Eyvazzadeh, MDSan Ramon, CA 945831144274085
- Kevin Fridie, M.D.San Ramon, CA 945831134109119
Common questions
What is Allison K. Duffy, M.D.'s NPI number?
Allison K. Duffy, M.D.'s National Provider Identifier (NPI) is 1548484835, issued on Apr 11, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Allison K. Duffy, M.D. located?
The NPPES record lists a practice address at 2420 Camino Ramon, San Ramon, CA, 94583. Phone: (415) 420-1694. Providers update this record themselves, so call before visiting.
How can I verify Allison K. Duffy, M.D.'s license?
NPPES lists California license number A98122, 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.