ELLEN DAYON (MD) – Geriatric Medicine (Internal Medicine) Physician, NPI 1043279359
Geriatric Medicine (Internal Medicine) Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
21,508 INTERNAL MEDICINE in CA
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Provider Addresses for ELLEN DAYON (MD)
PO BOX 35380
LAS VEGAS, NV 891335380
Phone: (702) 579-3203
Type: Mailing
1661, Golden Rain Road, Leisure World, Seal Beach, Orange County, California, 90740, United States
SEAL BEACH, CA 907404907
Phone: (562) 493-9581
Type: Location
Seal Beach Post Office, Main Street, Seal Beach, Orange County, California, 90740, United States
SEAL BEACH, CA 907401685
Phone: (562) 493-9581
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 5 Open Payments records for all available years, with a total value of $316.
Total Amount is formed as General ($316) + Research ($0) + Ownership ($0) = $316.
Last reported payment date: 2024-02-13 • Largest payer in this snapshot: Lilly USA, LLC ($119).
Total Amount
$316
General + Research + Ownership
Payments
5
Total payment records
General Amount
$316
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-02-13
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Lilly USA, LLC | $119 |
| AstraZeneca Pharmaceuticals LP | $119 |
| Radius Health, Inc. | $32 |
| Inari Medical, Inc. | $30 |
| Boston Scientific Corporation | $16 |
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: 2010-11-18
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 |
|---|---|---|---|---|
| I20101118000762 | I | Internal Medicine | CA | 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 | 229 | 78 | $0 |
| G0444 | Annual depression screening, 5 to 15 minutes | 28 | 28 | $0 |
| 99441 | Telephone medical discussion with physician, 5-10 minutes | 20 | 18 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 19 | 14 | $0 |
| 90694 | Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage | 11 | 11 | $0 |
Insurance plans in this area (ZIP 89133)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CA | |
| - | CA | |
| Osteopathic Manipulative Medicine, Family Practice, General Practice | CA | |
| Family Practice | NV | |
| Family Practice | NV | |
| Internal Medicine | CO | |
| - | CA | |
| Internal Medicine | CA | |
| Physician Assistant | NV | |
| - | CA |
Reviews
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