John Sung, M.D.
NPI 1063401636 · Internal Medicine Physician · Flushing, NY
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Sung, M.D. is a Internal Medicine Physician provider in Flushing, NY (NPI 1063401636).
Provider details
- NPI number
- 1063401636
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 228662 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 128 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 1,994 | 281 |
| Losartan Potassium | 1,694 | 236 |
| Amlodipine Besylate | 1,269 | 192 |
| Metformin Hcl | 916 | 123 |
| Icosapent Ethylbrand: Vascepa | 627 | 86 |
| Alendronate Sodium | 607 | 85 |
| Sitagliptin Phosphatebrand: Januvia |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$194 across 5 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
- 2005-10-17
- Last updated
- 2023-05-25
- Certified
- 2023-05-17
Frequently asked questions
- What is John Sung's NPI number?
- John Sung's National Provider Identifier (NPI) is 1063401636, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Sung's specialty?
- John Sung is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Sung located?
- John Sung's practice location on file with NPPES is 13172 40th Road, Flushing, NY 11354.
- What is John Sung's phone number?
- The practice phone number listed in the NPPES registry for John Sung is (718) 587-1111.
- Does John Sung accept Medicare?
- John Sung is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Sung's NPI active?
- Yes — John Sung's NPI (1063401636) is active in the NPPES registry as of the last update on 2023-05-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.