Tiffany Nguyen, MD
NPI 1982047999 · Endocrinology, Diabetes & Metabolism Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tiffany Nguyen, MD is a Endocrinology, Diabetes & Metabolism Physician provider in Seattle, WA (NPI 1982047999).
Provider details
- NPI number
- 1982047999
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 60850585 (WA)
Specialties & taxonomies
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
13 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
557 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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 181 | $18 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 180 | $105 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report95251 | 69 | $38 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 36 | $130 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 28 | $153 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 33 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 119 | 34 |
| Alendronate Sodium | 92 | 21 |
| Dulaglutidebrand: Trulicity | 61 | 16 |
| Empagliflozinbrand: Jardiance | 58 | 16 |
| Atorvastatin Calcium | 58 | 18 |
| Metformin Hclbrand: Metformin Hcl Er | 52 | 17 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$191 across 2 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)
- 1959 Ne Pacific StSeattle, WA 98195Phone: (408) 375-0545
Registry dates
- Enumerated
- 2013-04-09
- Last updated
- 2020-07-01
- Certified
- 2020-07-01
Frequently asked questions
- What is Tiffany Nguyen's NPI number?
- Tiffany Nguyen's National Provider Identifier (NPI) is 1982047999, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tiffany Nguyen's specialty?
- Tiffany Nguyen is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Tiffany Nguyen located?
- Tiffany Nguyen's practice location on file with NPPES is 1959 Ne Pacific St, Seattle, WA 98195.
- What is Tiffany Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Tiffany Nguyen is (206) 598-6288.
- Does Tiffany Nguyen accept Medicare?
- Tiffany Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tiffany Nguyen's NPI active?
- Yes — Tiffany Nguyen's NPI (1982047999) is active in the NPPES registry as of the last update on 2020-07-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.