Tiffany Quan
NPI 1679120943 · Family Nurse Practitioner · Oakland, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tiffany Quan is a Family Nurse Practitioner provider in Oakland, CA (NPI 1679120943).
Provider details
- NPI number
- 1679120943
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 95170278 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
6 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
14 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 14 | $15 |
Typical Medicare-allowed amounts for these services range $15–$15 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 118 | 54 |
| Atorvastatin Calcium | 90 | 31 |
| Losartan Potassium | 76 | 32 |
| Metformin Hcl | 40 | 13 |
| Metoprolol Succinate | 29 | — |
| Famotidine | 28 | 16 |
| Alendronate Sodium | 25 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-08-21
- Last updated
- 2020-08-06
- Certified
- 2020-08-06
Frequently asked questions
- What is Tiffany Quan's NPI number?
- Tiffany Quan's National Provider Identifier (NPI) is 1679120943, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tiffany Quan's specialty?
- Tiffany Quan is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Tiffany Quan located?
- Tiffany Quan's practice location on file with NPPES is 818 Webster St, Oakland, CA 94607-4220.
- What is Tiffany Quan's phone number?
- The practice phone number listed in the NPPES registry for Tiffany Quan is (510) 986-6800.
- Does Tiffany Quan accept Medicare?
- Tiffany Quan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tiffany Quan's NPI active?
- Yes — Tiffany Quan's NPI (1679120943) is active in the NPPES registry as of the last update on 2020-08-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.