LYDIA ZUSER (M.D.) – Internal Medicine Physician, NPI 1437150505
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 LYDIA ZUSER (M.D.)
62, Brown Street, Riverside, Haverhill, Essex County, Massachusetts, 01834, United States
SUITE # 304
HAVERHILL, MA 018306778
Phone: (978) 373-1591
Fax: (978) 373-2017
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 121 Open Payments records for all available years, with a total value of $2,416.
Total Amount is formed as General ($2,416) + Research ($0) + Ownership ($0) = $2,416.
Last reported payment date: 2024-10-24 • Largest payer in this snapshot: ABBVIE INC. ($379).
Total Amount
$2,416
General + Research + Ownership
Payments
121
Total payment records
General Amount
$2,416
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-24
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $379 |
| Lilly USA, LLC | $262 |
| Astellas Pharma US Inc | $219 |
| Sumitomo Pharma America, Inc. | $183 |
| Novo Nordisk Inc | $170 |
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: 2004-03-22
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 |
|---|---|---|---|---|
| I20040322000669 | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 437 | 260 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 393 | 253 | $0 |
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 342 | 342 | $0 |
| 99212 | Established patient office or other outpatient visit, 10-19 minutes | 108 | 88 | $0 |
| 96372 | Injection of drug or substance under skin or into muscle | 88 | 11 | $0 |
Insurance plans in this area (ZIP 01830)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine | MA | |
| Internal Medicine | VA | |
| Family Practice | GA | |
| Orthopedic Surgery | IL | |
| - | NC | |
| - | TX | |
| Internal Medicine | MA | |
| Family Practice | OR | |
| Nurse Practitioner | WA | |
| Internal Medicine | MA |
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