Gordon Mak, M.D.
NPI 1447330725 · Pulmonary Disease Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Pulmonary Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gordon Mak, M.D. is a Pulmonary Disease Physician provider in Stanford, CA (NPI 1447330725).
Provider details
- NPI number
- 1447330725
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A61568 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
212 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 86 | $110 |
| Test to Measure Expiratory Airflow and Volume Changes Before and After Medication Administration94060 | 27 | $11 |
| Test to Determine Lung Volumes Using Sensors94726 | 26 | $13 |
| Test to Examine How Well the Lungs Exchange Gases94729 | 26 | $10 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 25 | $155 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 168 | 60 |
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 147 | 35 |
| Fluticasone Propionate | 65 | 17 |
| Tiotropium Bromidebrand: Spiriva Respimat | 55 | 14 |
| Montelukast Sodium | 46 | 13 |
| Budesonide/Formoterol Fumaratebrand: Budesonide-Formoterol Fumarate | 46 | 12 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$447 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 222 W 39th AveSan Mateo, CA 94403-4364Phone: (650) 573-3962
Registry dates
- Enumerated
- 2006-10-17
- Last updated
- 2024-04-12
- Certified
- 2024-04-12
Frequently asked questions
- What is Gordon Mak's NPI number?
- Gordon Mak's National Provider Identifier (NPI) is 1447330725, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gordon Mak's specialty?
- Gordon Mak is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Gordon Mak located?
- Gordon Mak's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Gordon Mak's phone number?
- The practice phone number listed in the NPPES registry for Gordon Mak is (650) 723-4000.
- Does Gordon Mak accept Medicare?
- Gordon Mak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gordon Mak's NPI active?
- Yes — Gordon Mak's NPI (1447330725) is active in the NPPES registry as of the last update on 2024-04-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.