Sean Ho Yoon, MD
NPI 1386208858 · Endocrinology, Diabetes & Metabolism Physician · Great Neck, NY
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sean Ho Yoon, MD is a Endocrinology, Diabetes & Metabolism Physician provider in Great Neck, NY (NPI 1386208858).
Provider details
- NPI number
- 1386208858
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 320706 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
7 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
80 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 | 41 | $129 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 27 | $190 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 12 | $18 |
Typical Medicare-allowed amounts for these services range $18–$190 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 73 | 26 |
| Sitagliptin Phosphatebrand: Januvia | 28 | — |
| Semaglutidebrand: Ozempic | 27 | 13 |
| Pen Needle, Diabeticbrand: Nano 2nd Gen Pen Needle | 27 | 12 |
| Insulin Lisprobrand: Humalog Kwikpen U-100 | 25 | — |
| Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar | 20 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-04-30
- Last updated
- 2024-08-11
- Certified
- 2024-08-11
Frequently asked questions
- What is Sean Ho Yoon's NPI number?
- Sean Ho Yoon's National Provider Identifier (NPI) is 1386208858, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sean Ho Yoon's specialty?
- Sean Ho Yoon is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Sean Ho Yoon located?
- Sean Ho Yoon's practice location on file with NPPES is 865 Northern Blvd Ste 203, Great Neck, NY 11021-5310.
- What is Sean Ho Yoon's phone number?
- The practice phone number listed in the NPPES registry for Sean Ho Yoon is (516) 708-2540.
- Does Sean Ho Yoon accept Medicare?
- Sean Ho Yoon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sean Ho Yoon's NPI active?
- Yes — Sean Ho Yoon's NPI (1386208858) is active in the NPPES registry as of the last update on 2024-08-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.