DR. LAN CAO (M.D.) – Hospitalist Physician, NPI 1639494677
Hospitalist Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
6,893 INTERNAL MEDICINE in NJ
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Provider Addresses for DR. LAN CAO (M.D.)
Hunterdon Medical Center, 2100, Wescott Drive, Bartles Corners, Flemington, Hunterdon County, New Jersey, 08822, United States
FLEMINGTON, NJ 088224603
Phone: (908) 237-5486
Fax: (908) 237-5488
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)
CMS reports 3 Open Payments records for all available years, with a total value of $56.
Total Amount is formed as General ($56) + Research ($0) + Ownership ($0) = $56.
Last reported payment date: 2024-04-22 • Largest payer in this snapshot: Fisher Scientific Company L.L.C. ($24).
Total Amount
$56
General + Research + Ownership
Payments
3
Total payment records
General Amount
$56
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-04-22
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Fisher Scientific Company L.L.C. | $24 |
| Novartis Pharmaceuticals Corporation | $19 |
| PFIZER INC. | $14 |
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: 2015-08-20
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 |
|---|---|---|---|---|
| I20150820011772 | I | Internal Medicine | NJ | 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 |
|---|---|---|---|---|
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 517 | 196 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 263 | 186 | $0 |
| 99239 | Hospital discharge day management, more than 30 minutes | 246 | 230 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 167 | 161 | $0 |
| 99236 | Initial hospital care with same-day admission and discharge with high level of medical decision making, per day, if using time, at least 85 minutes | 12 | 12 | $0 |
Insurance plans in this area (ZIP 08822)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice | NJ | |
| Internal Medicine | CA | |
| - | NJ | |
| - | NJ | |
| - | NJ | |
| Cardiovascular Disease (Cardiology), Internal Medicine | NJ | |
| - | NJ | |
| Nurse Practitioner | NJ | |
| Family Practice | NJ | |
| Cardiovascular Disease (Cardiology), Internal Medicine | NJ |
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