DR. KAREN PHYLLIS FREI (M.D.) – Neurology Physician, NPI 1902836141
Neurology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,479 NEUROLOGY in CA
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Provider Addresses for DR. KAREN PHYLLIS FREI (M.D.)
6887, Mango Street, Alta Loma, Rancho Cucamonga, San Bernardino County, California, 91701, United States
ALTA LOMA, CA 917015320
Phone: (909) 987-7838
Fax: (909) 987-9838
Type: Mailing
Anderson Street, Loma Linda, San Bernardino County, California, 92354, United States
LOMA LINDA, CA 92354
Phone: (909) 588-2880
Fax: (909) 558-2137
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 8 Open Payments records for all available years, with a total value of $564.
Total Amount is formed as General ($564) + Research ($0) + Ownership ($0) = $564.
Last reported payment date: 2024-12-10 • Largest payer in this snapshot: Kyowa Kirin, Inc. ($270).
Total Amount
$564
General + Research + Ownership
Payments
8
Total payment records
General Amount
$564
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-10
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Kyowa Kirin, Inc. | $270 |
| ACADIA Pharmaceuticals Inc | $189 |
| Neurocrine BioSciences, Inc. | $73 |
| MDD US Operations, LLC | $16 |
| ABBVIE INC. | $15 |
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: 2009-10-01
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 |
|---|---|---|---|---|
| I20091001000181 | I | Neurology | 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 |
|---|---|---|---|---|
| J0588 | Injection, incobotulinumtoxin a, 1 unit | 7,100 | 16 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 260 | 149 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 160 | 110 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 65 | 65 | $0 |
| 95984 | Electronic analysis of implanted brain, spinal cord, or peripheral neurostimulator generator with brain stimulator programming, each additional 15 minutes with qualified health professional | 58 | 20 | $0 |
Insurance plans in this area (ZIP 91701)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CA | |
| - | CA | |
| - | CA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | CA | |
| Physician Assistant | CA | |
| Certified Registered Nurse Anesthetist (Crna) | CA | |
| Critical Care (Intensivists), General Surgery | CA | |
| Surgical Oncology, General Surgery | IL | |
| A N E S T H E S I O L O G Y | CA | |
| Certified Registered Nurse Anesthetist (Crna) | CA |
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