Theresa Nguyen
NPI 1356994347 · Gerontology Nurse Practitioner · Boston, MA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Theresa Nguyen is a Gerontology Nurse Practitioner provider in Boston, MA (NPI 1356994347).
Provider details
- NPI number
- 1356994347
- Entity type
- Individual
- Primary specialty
- Gerontology Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- RN2286457 (MA)
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 tenure33% of score
6 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 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 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Imatinib Mesylate | 74 | — |
| Acyclovir | 65 | 20 |
| Valacyclovir Hclbrand: Valacyclovir | 64 | 18 |
| Ruxolitinib Phosphatebrand: Jakafi | 59 | — |
| Bosutinibbrand: Bosulif | 55 | — |
| Dasatinibbrand: Sprycel | 35 | — |
| Hydroxyurea | 34 | 15 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$124 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
Additional practice locations (1)
- 46 Fenton StDorchester, MA 02122-2804Phone: (617) 784-6199
Registry dates
- Enumerated
- 2019-07-19
- Last updated
- 2019-12-03
Frequently asked questions
- What is Theresa Nguyen's NPI number?
- Theresa Nguyen's National Provider Identifier (NPI) is 1356994347, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Theresa Nguyen's specialty?
- Theresa Nguyen is listed in the NPPES registry with a primary specialty of Gerontology Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Theresa Nguyen located?
- Theresa Nguyen's practice location on file with NPPES is 450 Brookline Ave, Boston, MA 02215.
- What is Theresa Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Theresa Nguyen is (617) 632-1906.
- Does Theresa Nguyen accept Medicare?
- Theresa Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Theresa Nguyen's NPI active?
- Yes — Theresa Nguyen's NPI (1356994347) is active in the NPPES registry as of the last update on 2019-12-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.