Louis Chung, MD
NPI 1639486517 · Hospitalist Physician · New York, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Louis Chung, MD is a Hospitalist Physician provider in New York, NY (NPI 1639486517).
Provider details
- NPI number
- 1639486517
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 258623 (NY)
Specialties & taxonomies
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
15 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
447 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 171 | $137 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 154 | $91 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 60 | $133 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 28 | $58 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 23 | $200 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-09-13
- Last updated
- 2020-08-18
- Certified
- 2020-08-18
Frequently asked questions
- What is Louis Chung's NPI number?
- Louis Chung's National Provider Identifier (NPI) is 1639486517, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Louis Chung's specialty?
- Louis Chung is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Louis Chung located?
- Louis Chung's practice location on file with NPPES is 575 Lexington Ave, New York, NY 10022-6102.
- What is Louis Chung's phone number?
- The practice phone number listed in the NPPES registry for Louis Chung is (212) 746-4071.
- Does Louis Chung accept Medicare?
- Louis Chung is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Louis Chung's NPI active?
- Yes — Louis Chung's NPI (1639486517) is active in the NPPES registry as of the last update on 2020-08-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.