Marilyn Nguyen, DO
NPI 1457704371 · Family Medicine Physician · Westminster, CO
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marilyn Nguyen, DO is a Family Medicine Physician provider in Westminster, CO (NPI 1457704371).
Provider details
- NPI number
- 1457704371
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- DR0062234 (CO)
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
9 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
135 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 76 | $112 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 31 | $93 |
| Advance Care Planning, First 30 Minutes99497 | 28 | $70 |
Typical Medicare-allowed amounts for these services range $70–$112 (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 · 71 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 178 | 49 |
| Atorvastatin Calcium | 151 | 47 |
| Rosuvastatin Calcium | 150 | 47 |
| Losartan Potassium | 122 | 36 |
| Omeprazole | 84 | 29 |
| Alendronate Sodium | 77 | 23 |
| Tirzepatide |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,419 across 70 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)
- 11310 Huron St Ste 100Northglenn, CO 80234-3090Phone: (303) 450-7435Fax: (303) 450-7463
Registry dates
- Enumerated
- 2016-07-15
- Last updated
- 2024-12-23
- Certified
- 2024-12-23
Frequently asked questions
- What is Marilyn Nguyen's NPI number?
- Marilyn Nguyen's National Provider Identifier (NPI) is 1457704371, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marilyn Nguyen's specialty?
- Marilyn Nguyen is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marilyn Nguyen located?
- Marilyn Nguyen's practice location on file with NPPES is 14300 Orchard Pkwy Fl 2, Westminster, CO 80023-9206.
- What is Marilyn Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Marilyn Nguyen is (720) 627-4921.
- Does Marilyn Nguyen accept Medicare?
- Marilyn Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marilyn Nguyen's NPI active?
- Yes — Marilyn Nguyen's NPI (1457704371) is active in the NPPES registry as of the last update on 2024-12-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.