SANG YOON LEE (MD) – Gastroenterology Physician, NPI 1649474792
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,032 GASTROENTEROLOGY in NY
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Provider Addresses for SANG YOON LEE (MD)
110, South Bedford Road, Mount Kisco, Westchester, New York, 10549, United States
CARE MOUNT MEDICAL PC
MOUNT KISCO, NY 105493446
Phone: (914) 241-1050
Fax: (914) 242-1516
Type: Mailing
90, South Bedford Road, Mount Kisco, Westchester, New York, 10549, United States
CARE MOUNT MEDICAL PC
MOUNT KISCO, NY 105493412
Phone: (914) 232-3135
Fax: (914) 242-1516
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2025-10-01
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20070828000107 | I | Gastroenterology | NY | TBD |
| I20251001001309 | I | Gastroenterology | NV | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 45380 | Biopsy of large bowel using a flexible endoscope | 180 | 179 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 153 | 151 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 122 | 101 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 74 | 72 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 48 | 43 | $0 |
Insurance plans in this area (ZIP 10549)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| GASTROENTEROLOGY | NY | 45385 | Removal of polyps or growths of large bowel using an endoscope | 61 | 61 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| O B S T E T R I C S/ G Y N E C O L O G Y | NY | |
| Physician Assistant | NY | |
| Internal Medicine | NY | |
| - | NY | |
| Internal Medicine | NY | |
| O B S T E T R I C S/ G Y N E C O L O G Y | NY | |
| Diagnostic Radiology | NY | |
| - | VA | |
| - | NY | |
| A N E S T H E S I O L O G Y | NY |
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