Mary Nguyen, DO
NPI 1942644695 · Hospitalist Physician · Lakewood, CO
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Nguyen, DO is a Hospitalist Physician provider in Lakewood, CO (NPI 1942644695).
Provider details
- NPI number
- 1942644695
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- Yes
- License
- Q8112 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
132 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) |
|---|---|---|
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 132 | $170 |
Typical Medicare-allowed amounts for these services range $170–$170 (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.
Practice location
Mailing address
Additional practice locations (2)
- 501 E Hampden AveEnglewood, CO 80113-2702Phone: (303) 788-5000
- 3526 London LnMissouri City, TX 77459-3371Phone: (800) 893-9698
Registry dates
- Enumerated
- 2013-04-24
- Last updated
- 2025-09-10
- Certified
- 2025-09-10
Frequently asked questions
- What is Mary Nguyen's NPI number?
- Mary Nguyen's National Provider Identifier (NPI) is 1942644695, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Nguyen's specialty?
- Mary Nguyen is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Nguyen located?
- Mary Nguyen's practice location on file with NPPES is 11600 W 2nd Pl, Lakewood, CO 80228-1527.
- What is Mary Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Mary Nguyen is (720) 321-0000.
- Does Mary Nguyen accept Medicare?
- Mary Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Nguyen's NPI active?
- Yes — Mary Nguyen's NPI (1942644695) is active in the NPPES registry as of the last update on 2025-09-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.