KATHARINE M O'BRIEN (DO) – Family Medicine Physician, NPI 1083720718
Family Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
13,194 FAMILY PRACTICE in CA
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Provider Addresses for KATHARINE M O'BRIEN (DO)
28780, Single Oak Drive, Mission Village, Rancho California, Temecula, Riverside County, California, 92590, United States
STE 160
TEMECULA, CA 925905528
Phone: (951) 676-4193
Fax: (951) 719-7469
Type: Mailing
30420, Haun Road, Menifee, Riverside County, California, 92584, United States
MENIFEE, CA 925846810
Phone: (951) 676-4193
Fax: (951) 719-1469
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 14 Open Payments records for all available years, with a total value of $362.
Total Amount is formed as General ($362) + Research ($0) + Ownership ($0) = $362.
Last reported payment date: 2024-08-29 • Largest payer in this snapshot: Amgen Inc. ($128).
Total Amount
$362
General + Research + Ownership
Payments
14
Total payment records
General Amount
$362
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-08-29
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Amgen Inc. | $128 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $106 |
| GlaxoSmithKline, LLC. | $31 |
| Phathom Pharmaceuticals, Inc. | $26 |
| Medtronic, Inc. | $22 |
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: 2017-04-28
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 |
|---|---|---|---|---|
| I20170428000595 | I | Family Practice | 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 | 95 | 41 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 86 | 39 | $0 |
| G0444 | Annual depression screening, 5 to 15 minutes | 46 | 46 | $0 |
Insurance plans in this area (ZIP 92590)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| FAMILY MEDICINE | CA | 83036 | Hemoglobin A1C level | 30 | 18 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | CA | |
| Nurse Practitioner | CA | |
| Nurse Practitioner | CA | |
| Internal Medicine | CA | |
| - | CA | |
| Nurse Practitioner | CA | |
| Internal Medicine | CA |
Reviews
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