Mary J. Im, M.D.
Anesthesiology Physician · Stanford, CA
Mary J. Im, M.D. is an anesthesiology physician with a practice address in Stanford, California, and NPI 1952540502, issued on Feb 5, 2009. Check the license (California C168060, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mary J. Im
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License numbers
- C168060 CA
MD436159 PA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Pasteur Dr, Stanford, CA 94305
- Phone
- (650) 723-4000
- Enumerated
- Feb 5, 2009
- Record last updated
- Aug 13, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20200616000500); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →
Also registered at 300 Pasteur Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mary J. Im in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C168060Check 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
- EL Camino AnesthesiaLos Gatos, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary J. Im among 7,571 anesthesiology physician records in California
Mary J. Im, 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 2009, is newer than 61% of them.
- NPI issued2009 · 61% of these records are older, 35% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2000 · median 2006 among the 4,868 with a school on file
- Record last updated2020 · 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).
387 anesthesiology physician records list a practice address in Stanford
They are 387 of the 5,606 NPPES records with a practice address in Stanford, and 7,571 anesthesiology physician records in California.
All 7,571 in California → Every provider in Stanford → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Aileen Adriano, MDStanford, CA 943051558311886
- Martin Angst, MDStanford, CA 943051386694529
- Rhett Atkinson, M.D.Stanford, CA 943051558328005
- Edward Baer, M.D.Stanford, CA 943051710945837
- William Bohman, M.D.Stanford, CA 943051265490387
- Bryan Bohman, MDStanford, CA 943051285692368
- Michael Champeau, M.D.Stanford, CA 943051538126099
- Anthony Doufas, MDStanford, CA 943051578531430
Common questions
What is Mary J. Im, M.D.'s NPI number?
Mary J. Im, M.D.'s National Provider Identifier (NPI) is 1952540502, issued on Feb 5, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Mary J. Im, M.D. located?
The NPPES record lists a practice address at 300 Pasteur Dr, Stanford, CA, 94305. Phone: (650) 723-4000. Providers update this record themselves, so call before visiting.
How can I verify Mary J. Im, M.D.'s license?
NPPES lists California license number C168060, 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.