Kristy Nguyen
NPI 1043773518 · Hospitalist Physician · Concord, CA
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kristy Nguyen is a Hospitalist Physician provider in Concord, CA (NPI 1043773518).
Provider details
- NPI number
- 1043773518
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- A181007 (CA)
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
7 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
372 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) |
|---|---|---|
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 228 | $192 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 144 | $144 |
Typical Medicare-allowed amounts for these services range $144–$192 (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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$14 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)
- 1101 Van Ness Ave Ste 1120San Francisco, CA 94109-6919Phone: (415) 600-6000
Registry dates
- Enumerated
- 2019-04-10
- Last updated
- 2022-08-23
- Certified
- 2022-08-23
Frequently asked questions
- What is Kristy Nguyen's NPI number?
- Kristy Nguyen's National Provider Identifier (NPI) is 1043773518, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kristy Nguyen's specialty?
- Kristy Nguyen is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Kristy Nguyen located?
- Kristy Nguyen's practice location on file with NPPES is 2700 Grant St Ste 200, Concord, CA 94520-2270.
- What is Kristy Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Kristy Nguyen is (925) 952-2828.
- Does Kristy Nguyen accept Medicare?
- Kristy Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kristy Nguyen's NPI active?
- Yes — Kristy Nguyen's NPI (1043773518) is active in the NPPES registry as of the last update on 2022-08-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.