Billy Li, M.D.
NPI 1659368223 · Internal Medicine Physician · New York, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Billy Li, M.D. is a Internal Medicine Physician provider in New York, NY (NPI 1659368223).
Provider details
- NPI number
- 1659368223
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 230574 (NY)
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
20 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
373 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 228 | $101 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 65 | $143 |
| Insertion of Needle Into Vein (3 Years Or Older)36410 | 37 | $20 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 18 | $16 |
| Administration of Influenza Virus VaccineG0008 | 14 | $36 |
| Test to Measure Expiratory Airflow and Volume94010 | 11 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 107 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 690 | 113 |
| Alendronate Sodium | 438 | 68 |
| Amlodipine Besylate | 436 | 74 |
| Simvastatin | 326 | 45 |
| Losartan Potassium | 277 | 45 |
| Omeprazole | 252 | 82 |
| Metoprolol Succinate | 243 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$16 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
Registry dates
- Enumerated
- 2005-09-29
- Last updated
- 2017-01-31
Frequently asked questions
- What is Billy Li's NPI number?
- Billy Li's National Provider Identifier (NPI) is 1659368223, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Billy Li's specialty?
- Billy Li is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Billy Li located?
- Billy Li's practice location on file with NPPES is 13 Elizabeth St, New York, NY 10013-4803.
- What is Billy Li's phone number?
- The practice phone number listed in the NPPES registry for Billy Li is (212) 966-7493.
- Does Billy Li accept Medicare?
- Billy Li is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Billy Li's NPI active?
- Yes — Billy Li's NPI (1659368223) is active in the NPPES registry as of the last update on 2017-01-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.