DR. DAVID JONATHAN CHAFIIAN (MD) – Internal Medicine Physician, NPI 1013116839
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,811 CRITICAL CARE (INTENSIVISTS) in NY
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Provider Addresses for DR. DAVID JONATHAN CHAFIIAN (MD)
11, Wooleys Lane, Great Neck, North Hempstead, Nassau County, New York, 11023, United States
APT 1B
GREAT NECK, NY 110232140
Phone: (516) 570-2494
Type: Mailing
2405, Avenue P, Brooklyn, Kings County, New York, 11229, United States
BROOKLYN, NY 11229
Phone: (347) 460-8511
Fax: (516) 570-2494
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: 2008-11-24
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 |
|---|---|---|---|---|
| I20081124000230 | I | Critical Care (Intensivists) | NY | 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 |
|---|---|---|---|---|
| 99291 | Critical care, first 30-74 minutes | 306 | 238 | $0 |
Insurance plans in this area (ZIP 11023)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| G A S T R O E N T E R O L O G Y | NY | |
| Physician Assistant | NY | |
| Internal Medicine | NY | |
| General Surgery, Critical Care (Intensivists) | NY | |
| Diagnostic Radiology | NY | |
| - | NY | |
| Hospitalist, Family Practice | NY | |
| Hospitalist, Internal Medicine | NY | |
| Registered Dietitian Or Nutrition Professional | NY | |
| Family Practice | NY |
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