CHRISTOPHER H LEUNG (M.D.) – Gastroenterology Physician, NPI 1538257464
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
829 GASTROENTEROLOGY in MA
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Provider Addresses for CHRISTOPHER H LEUNG (M.D.)
Hallmark Health Stoneham Outpatient Campus, 51, Montvale Avenue, Nobility Hill Historic District, Lindenwood, Stoneham, Middlesex County, Massachusetts, 02180, United States
STONEHAM, MA 021802417
Phone: (781) 213-5200
Fax: (781) 481-9016
Mailing address matches the actual address.
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.
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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: 2009-01-28
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
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 |
|---|---|---|---|---|
| I20090128000581 | I | Gastroenterology | MA | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 218 | 158 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 157 | 155 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 94 | 94 | $0 |
| 45380 | Biopsy of large bowel using a flexible endoscope | 51 | 51 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 41 | 41 | $0 |
Insurance plans in this area (ZIP 02180)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| Cardiovascular Disease (Cardiology), Interventional Cardiology | MA | |
| - | MA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | MA | |
| - | MA | |
| Family Practice | NM | |
| - | MA | |
| - | MA | |
| Family Practice | MA | |
| - | MA | |
| Physician Assistant | MA |
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