DR. LI TSO (M.D.) – Internal Medicine Physician, NPI 1467443150
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
7,722 INTERNAL MEDICINE in MA
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Provider Addresses for DR. LI TSO (M.D.)
Charlestown Post Office (mobile), Pattern Close, St Austell Bay, Charlestown, Cornwall, England, PL25 3FQ, United Kingdom
MASS GENERAL PHYSICIAN ORGANIZATION
CHARLESTOWN, MA 021299142
Phone: (617) 724-6670
Fax: (617) 724-6632
Type: Mailing
15, Parkman Street, Fields Corner, Dorchester, Boston, Suffolk County, Massachusetts, 02122, United States
BULFINCH MEDICAL GROUP, WANG 535
BOSTON, MA 021143117
Phone: (617) 724-6640
Fax: (617) 724-6632
Type: Location
70 HASTINGS ST
WELLESLEY, MA 024815439
Phone: (781) 772-8100
Fax: (781) 772-8101
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 7 Open Payments records for all available years, with a total value of $173.
Total Amount is formed as General ($173) + Research ($0) + Ownership ($0) = $173.
Last reported payment date: 2024-11-14 • Largest payer in this snapshot: PFIZER INC. ($99).
Total Amount
$173
General + Research + Ownership
Payments
7
Total payment records
General Amount
$173
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-14
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| PFIZER INC. | $99 |
| E.R. Squibb & Sons, L.L.C. | $74 |
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: 2004-07-23
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 |
|---|---|---|---|---|
| I20040723000096 | I | Internal Medicine | 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 |
|---|---|---|---|---|
| 36415 | Insertion of needle into vein for collection of blood sample | 207 | 200 | $0 |
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 145 | 145 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 110 | 98 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 70 | 64 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 54 | 46 | $0 |
Insurance plans in this area (ZIP 02129)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine | MA | |
| Internal Medicine | MA | |
| Internal Medicine | MA |
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