DR. EARL FREDERICK NIELSEN (MD) – Nephrology Physician, NPI 1770550030
Nephrology 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. EARL FREDERICK NIELSEN (MD)
PO Box 846028, Albany Street, Church Green, Financial District, Boston, Suffolk County, Massachusetts, 02284-6028, United States
BOSTON, MA 022416457
Phone:
Type: Mailing
435, South Street, Morris Township, Morris County, New Jersey, 07960, United States
SUITE 210
MORRISTOWN, NJ 079606422
Phone: (973) 971-7165
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 54 Open Payments records for all available years, with a total value of $1,150.
Total Amount is formed as General ($1,150) + Research ($0) + Ownership ($0) = $1,150.
Last reported payment date: 2024-12-12 • Largest payer in this snapshot: Novo Nordisk Inc ($378).
Total Amount
$1,150
General + Research + Ownership
Payments
54
Total payment records
General Amount
$1,150
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-12
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2005-09-29
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 |
|---|---|---|---|---|
| I20050929000856 | 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 |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 124 | 90 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 101 | 68 | $0 |
| 93000 | Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 28 | 26 | $0 |
| G0008 | Administration of influenza virus vaccine | 18 | 18 | $0 |
| 90662 | Influenza vaccine split virus, preservative free | 17 | 17 | $0 |
Insurance plans in this area (ZIP 02241)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | NY | |
| - | MA | |
| Internal Medicine | MA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | PA | |
| - | NJ | |
| P S Y C H I A T R Y | NJ | |
| U R O L O G Y | NC | |
| Nurse Practitioner | NJ | |
| Internal Medicine | MA | |
| Nurse Practitioner | NJ |
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