Grace Choi
NPI 1831585074 · Nephrology Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grace Choi is a Nephrology Physician provider in Los Angeles, CA (NPI 1831585074).
Provider details
- NPI number
- 1831585074
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- 148454 (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
11 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
826 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 362 | $114 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 79 | $76 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 75 | $9 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 67 | $219 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 65 | $166 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 51 | 19 |
| Losartan Potassium | 49 | 17 |
| Furosemide | 45 | 18 |
| Epoetin Alfabrand: Epogen | 37 | — |
| Dapagliflozin Propanediolbrand: Farxiga | 32 | 14 |
| Hydralazine Hcl | 31 | — |
| Sodium Zirconium Cyclosilicatebrand: Lokelma | 29 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,634 across 14 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
Registry dates
- Enumerated
- 2015-04-14
- Last updated
- 2023-11-01
- Certified
- 2023-11-01
Frequently asked questions
- What is Grace Choi's NPI number?
- Grace Choi's National Provider Identifier (NPI) is 1831585074, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grace Choi's specialty?
- Grace Choi is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Grace Choi located?
- Grace Choi's practice location on file with NPPES is 1400 S Grand Ave Ste 800, Los Angeles, CA 90015-3048.
- What is Grace Choi's phone number?
- The practice phone number listed in the NPPES registry for Grace Choi is (213) 748-1414.
- Does Grace Choi accept Medicare?
- Grace Choi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grace Choi's NPI active?
- Yes — Grace Choi's NPI (1831585074) is active in the NPPES registry as of the last update on 2023-11-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.