MARIA S. KOEN (NP) – Family Nurse Practitioner, NPI 1891833935
Family Nurse Practitioner
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
8,971 NURSE PRACTITIONER in MA
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Provider Addresses for MARIA S. KOEN (NP)
33 AUBURN ST # B
WALTHAM, MA 024532803
Phone: (781) 771-4962
Type: Mailing
Joslin Diabetes Center, 1, Joslin Place, Boston, Suffolk County, Massachusetts, 02215, United States
BOSTON, MA 022155306
Phone: (617) 732-2699
Type: Location
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 $1,346.
Total Amount is formed as General ($296) + Research ($1,050) + Ownership ($0) = $1,346.
Last reported payment date: 2024-08-06 • Largest payer in this snapshot: Embecta Corp. ($1,050).
Total Amount
$1,346
General + Research + Ownership
Payments
3
Total payment records
General Amount
$296
General payments
Research Amount
$1,050
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-08-06
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Embecta Corp. | $1,050 |
| Medtronic, Inc. | $154 |
| SANOFI-AVENTIS U.S. LLC | $141 |
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: 2007-03-21
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 |
|---|---|---|---|---|
| I20070321000216 | I | Nurse Practitioner | 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 | 115 | 83 | $0 |
| 95251 | Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report | 97 | 58 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 23 | 21 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 18 | 14 | $0 |
| 99443 | Telephone medical discussion with physician, 21-30 minutes | 16 | 14 | $0 |
Insurance plans in this area (ZIP 02453)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | MA | |
| - | MA | |
| - | MA | |
| - | MA | |
| - | MA | |
| - | MA | |
| - | MA | |
| - | MA | |
| - | MA | |
| Emergency Medicine | NC |
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