Grace Hyun, MD
NPI 1699829630 · Specialist · New York, NY
Enrolled with Medicare as Practitioner - Urology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grace Hyun, MD is a Specialist provider in New York, NY (NPI 1699829630).
Provider details
- NPI number
- 1699829630
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 223431 (NY)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- 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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$54,564 across 21 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
- 2007-01-23
- Last updated
- 2021-04-12
- Certified
- 2021-04-12
Frequently asked questions
- What is Grace Hyun's NPI number?
- Grace Hyun's National Provider Identifier (NPI) is 1699829630, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grace Hyun's specialty?
- Grace Hyun is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Grace Hyun located?
- Grace Hyun's practice location on file with NPPES is 3959 Broadway, New York, NY 10032-1559.
- What is Grace Hyun's phone number?
- The practice phone number listed in the NPPES registry for Grace Hyun is (212) 305-8510.
- Does Grace Hyun accept Medicare?
- Grace Hyun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grace Hyun's NPI active?
- Yes — Grace Hyun's NPI (1699829630) is active in the NPPES registry as of the last update on 2021-04-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.