Susan Nguyen, MD
NPI 1164470696 · Internal Medicine Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Susan Nguyen, MD is a Internal Medicine Physician provider in San Francisco, CA (NPI 1164470696).
Provider details
- NPI number
- 1164470696
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- A65791 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
4,866 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) |
|---|---|---|
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 1,921 | $124 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 1,427 | $86 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 380 | $124 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 304 | $82 |
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More99306 | 206 | $206 |
| Hospital Discharge Day Management, More Than 30 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 103 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 203 | 50 |
| Levothyroxine Sodium | 164 | 23 |
| Gabapentin | 159 | 30 |
| Apixabanbrand: Eliquis | 156 | 24 |
| Furosemide | 152 | 29 |
| Potassium Chloride | 83 | 18 |
| Trazodone Hcl | 83 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$104 across 1 record (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
Registry dates
- Enumerated
- 2006-05-05
- Last updated
- 2012-04-17
Frequently asked questions
- What is Susan Nguyen's NPI number?
- Susan Nguyen's National Provider Identifier (NPI) is 1164470696, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Susan Nguyen's specialty?
- Susan Nguyen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Susan Nguyen located?
- Susan Nguyen's practice location on file with NPPES is 1770 Post Street Suite 324, San Francisco, CA 94115-3606.
- What is Susan Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Susan Nguyen is (650) 455-1363.
- Does Susan Nguyen accept Medicare?
- Susan Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Susan Nguyen's NPI active?
- Yes — Susan Nguyen's NPI (1164470696) is active in the NPPES registry as of the last update on 2012-04-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.