Susan Mah, MD
NPI 1902984537 · Internal Medicine Physician · Daly City, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Susan Mah, MD is a Internal Medicine Physician provider in Daly City, CA (NPI 1902984537).
Provider details
- NPI number
- 1902984537
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A74528 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 57 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 336 | 123 |
| Hydrochlorothiazide | 254 | 92 |
| Amlodipine Besylate | 180 | 62 |
| Losartan Potassium | 170 | 62 |
| Lisinopril | 161 | 59 |
| Levothyroxine Sodium | 129 | 42 |
| Metoprolol Succinate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-01
- Last updated
- 2021-12-06
Frequently asked questions
- What is Susan Mah's NPI number?
- Susan Mah's National Provider Identifier (NPI) is 1902984537, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Susan Mah's specialty?
- Susan Mah is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Susan Mah located?
- Susan Mah's practice location on file with NPPES is 395 Hickey Blvd, Daly City, CA 94015-2770.
- What is Susan Mah's phone number?
- The practice phone number listed in the NPPES registry for Susan Mah is (650) 742-2000.
- Does Susan Mah accept Medicare?
- Susan Mah is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Susan Mah's NPI active?
- Yes — Susan Mah's NPI (1902984537) is active in the NPPES registry as of the last update on 2021-12-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.