Gordon Koon-Man Mak, M.D.
Pulmonary Disease Physician · Stanford, CA
Gordon Koon-Man Mak, M.D. is a pulmonary disease physician with a practice address in Stanford, California, and NPI 1447330725, issued on Oct 17, 2006. Check the license (California A61568, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gordon Koon-Man Mak
- Credential
- M.D.
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License number
- A61568 CA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Pasteur Dr, Stanford, CA 94305
- Phone
- (650) 723-4000
- Enumerated
- Oct 17, 2006
- Record last updated
- Apr 12, 2024
- Medicaid ID
- 00A615680 CA
- Medicare enrollment
- Enrolled (PECOS I20081105000521); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 1,443 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 Gordon Koon-Man Mak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A61568Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
39% fewer Medicare Part D claims than the average pulmonary disease physician in 2024
865 Medicare Part D claims for 136 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 63% of claims.
Most prescribed
- Albuterol Sulfate Hfa168 claims
- Trelegy Ellipta147 claims
- Fluticasone Propionate65 claims
- Spiriva Respimat55 claims
- Budesonide-Formoterol Fumarate46 claims
- Montelukast Sodium46 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): 76.5 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).
Industry payments in 2024: $446.83
3 payments; by number, the most common kind was food and beverage; the largest payer was Bayer Healthcare Pharmaceuticals Inc. The 8,806 providers of this specialty with any payment received $5,159.88 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
2 hospitals and group practices
- Stanford Health CareStanford, CA · Acute Care Hospitals5 of 5 stars
- County OF San MateoSan Mateo, CA
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.
Gordon Koon-Man Mak among 1,443 pulmonary disease physician records in California
Gordon Koon-Man Mak, M.D. is one of 1,443 pulmonary disease physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 51% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1995 · median 2002 among the 1,061 with a school on file
- Record last updated2024 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
50 pulmonary disease physician records list a practice address in Stanford
They are 50 of the 5,606 NPPES records with a practice address in Stanford, and 1,443 pulmonary disease physician records in California.
All 1,443 in California → Every provider in Stanford → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- Laveena Chhatwani, MDStanford, CA 943051841278652
- Ramona Doyle, M.D.Stanford, CA 943051497863567
- Jennifer Fresco, M.D.Stanford, CA 943051902979131
- Jonerik Holty, M.D.Stanford, CA 943051720156748
- Deborah Levine, MDStanford, CA 943051831206804
- Joseph Lin, M.D.Stanford, CA 943051720136807
- Paul Mohabir, M.D.Stanford, CA 943051811909708
- Roland Nador, MDStanford, CA 943051639118508
Common questions
What is Gordon Koon-Man Mak, M.D.'s NPI number?
Gordon Koon-Man Mak, M.D.'s National Provider Identifier (NPI) is 1447330725, issued on Oct 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gordon Koon-Man Mak, 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 Gordon Koon-Man Mak, M.D.'s license?
NPPES lists California license number A61568, 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 Gordon Koon-Man Mak, M.D. prescribe under Medicare Part D?
In 2024, Gordon Koon-Man Mak, M.D. had 865 Medicare Part D claims for 136 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. Part D covers Medicare prescriptions only.
What is Gordon Koon-Man Mak, M.D.'s MIPS final score?
The 2023 MIPS final score is 76.5 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.