ANNA J VASERSHTEIN (MD) – Internal Medicine Physician, NPI 1407854227
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
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Provider Addresses for ANNA J VASERSHTEIN (MD)
340, Main Street, Leominster, Worcester County, Massachusetts, 01453, United States
STE. 670
WORCESTER, MA 016081604
Phone: (508) 754-3566
Fax: (508) 438-6368
Type: Mailing
Lincoln School, 61, Lincoln Street, Framingham, Middlesex County, Massachusetts, 01702, United States
SUITE 301
FRAMINGHAM, MA 017028264
Phone: (508) 879-0077
Fax: (508) 875-1005
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: 2010-05-03
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 |
|---|---|---|---|---|
| I20100503000324 | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 01608)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| INTERNAL MEDICINE | MA | 83036 | Hemoglobin A1C level | 95 | 53 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | MA | |
| Internal Medicine | MA | |
| Internal Medicine | MA | |
| Clinical Social Worker | RI | |
| Nurse Practitioner | MA | |
| Internal Medicine | MA | |
| Nurse Practitioner | MA | |
| Internal Medicine | MA | |
| Nurse Practitioner | MA | |
| - | MA |
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