Vivian Tan, NP-C
NPI 1649787011 · Family Nurse Practitioner · Elkridge, MD
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Vivian Tan, NP-C is a Family Nurse Practitioner provider in Elkridge, MD (NPI 1649787011).
Provider details
- NPI number
- 1649787011
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP-C
- Sex
- Female
- Sole proprietor
- Yes
- License
- R164835 (MD)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
8 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
3 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 30 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Amlodipine Besylate | 50 |
| Trazodone Hcl | 40 |
| Tamsulosin Hcl | 39 |
| Atorvastatin Calcium | 29 |
| Gabapentin | 28 |
| Lisinopril | 26 |
| Benztropine Mesylate | 25 |
| Losartan Potassium | 25 |
| Carbamazepine | 24 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$87 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 (2)
- 1910 Towne Centre Blvd Ste 250Annapolis, MD 21401-3599Phone: (657) 237-2450
- 4155 Glen Park RdNottingham, MD 21236-1019Phone: (410) 248-0661
Registry dates
- Enumerated
- 2018-01-05
- Last updated
- 2023-04-14
- Certified
- 2023-04-14
Frequently asked questions
- What is Vivian Tan's NPI number?
- Vivian Tan's National Provider Identifier (NPI) is 1649787011, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Vivian Tan's specialty?
- Vivian Tan is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Vivian Tan located?
- Vivian Tan's practice location on file with NPPES is 6480 Old Waterloo Rd, Elkridge, MD 21075.
- What is Vivian Tan's phone number?
- The practice phone number listed in the NPPES registry for Vivian Tan is (410) 799-0291.
- Does Vivian Tan accept Medicare?
- Vivian Tan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Vivian Tan's NPI active?
- Yes — Vivian Tan's NPI (1649787011) is active in the NPPES registry as of the last update on 2023-04-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.