I-Fan Theodore Mau, MD, PHD
Otolaryngology Physician · Stanford, CA
I-Fan Theodore Mau, MD, PHD is an otolaryngology physician with a practice address in Stanford, California, and NPI 1780718791, issued on Mar 15, 2007. Check the license (California A84366, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- I-Fan Theodore Mau
- Credential
- MD, PHD
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License numbers
- A84366 CA
42023 TN
M8817 TX
Self-reported in NPPES; status is on the state search - Practice location
- 300 Pasteur Dr, Stanford, CA 94305
- Phone
- (650) 723-4000
- Enumerated
- Mar 15, 2007
- Record last updated
- Jul 1, 2025
- Medicare enrollment
- Enrolled (PECOS I20250401001521); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 2002
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 1,212 in California → Look up another NPI →
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Verify I-Fan Theodore Mau in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A84366Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average otolaryngology physician in 2024
72 Medicare Part D claims for 44 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D. 19 claims were for opioids.
Most prescribed
- Acetaminophen-Codeine18 claims
- Diazepam13 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 74.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
One hospital affiliation
- Stanford Health CareStanford, CA · Acute Care Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
I-Fan Theodore Mau among 1,212 otolaryngology physician records in California
I-Fan Theodore Mau, MD, PHD is one of 1,212 otolaryngology physician records with a practice address in California. 80% 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 48% of them.
- NPI issued2007 · 48% of these records are older, 42% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2002 · median 2004 among the 818 with a school on file
- Record last updated2025 · 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 207Y00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
47 otolaryngology physician records list a practice address in Stanford
They are 47 of the 5,606 NPPES records with a practice address in Stanford, and 1,212 otolaryngology physician records in California.
All 1,212 in California → Every provider in Stanford → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- Edward Damrose, MDStanford, CA 943051851314702
- Robert Jackler, MDStanford, CA 943051568502839
- Nancy JiangStanford, CA 943051740424043
- Benzion Joshua, M.D.Palo Alto, CA 943051538193792
- Michael Kaplan, M.D.Stanford, CA 943051851437131
- Frank Lin, MD, PHDStanford, CA 943051619015229
- Uchechukwu Megwalu, MDStanford, CA 943051730370941
- Eric Nash, MDStanford, CA 943051538124250
Common questions
What is I-Fan Theodore Mau, MD, PHD's NPI number?
I-Fan Theodore Mau, MD, PHD's National Provider Identifier (NPI) is 1780718791, issued on Mar 15, 2007. An NPI identifies a provider in billing; it is not a license.
Where is I-Fan Theodore Mau, MD, PHD 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 I-Fan Theodore Mau, MD, PHD's license?
NPPES lists California license number A84366, 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 I-Fan Theodore Mau, MD, PHD prescribe under Medicare Part D?
In 2024, I-Fan Theodore Mau, MD, PHD had 72 Medicare Part D claims for 44 beneficiaries; the average among otolaryngology physician prescribers was 541. Part D covers Medicare prescriptions only.
What is I-Fan Theodore Mau, MD, PHD's MIPS final score?
The 2023 MIPS final score is 74.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.