KAREN A. REARDON (MD) – Rheumatology Physician, NPI 1013095827
Rheumatology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
759 RHEUMATOLOGY in CA
Provider Addresses for KAREN A. REARDON (MD)
1079 EUCALYPTUS STREET
STE A
MANTECA, CA 953374317
Phone: (209) 284-4561
Fax: (209) 284-4562
Type: Location
Harrison Street, Chinatown, Oakland, Alameda County, California, 94607, United States
OAKLAND, CA 946123429
Phone: (510) 625-6262
Type: Mailing
530 W Eaton Avenue
Ste C
Tracy, CA 953763454
Phone: (209) 284-4561
Fax: (209) 284-4562
Type: Location
6600 Madison Avenue
Ste 2
Carmichael, CA 956080645
Phone: (209) 284-4561
Fax: (209) 284-4562
Type: Location
2510 Airpark Drive
Ste 305
Redding, CA 960012462
Phone: (209) 284-4561
Fax: (209) 284-4562
Type: Location
4810 N. CALLE FAJA
TUCSON, AZ 85718
Phone: (602) 206-7870
Type: Mailing
3838 N. CAMPBELL AVE.
TUCSON, AZ 85719
Phone: (520) 694-4000
Type: Location
Kaiser Permanente Modesto Medical Center and Medical Offices, 4601, Dale Road, Modesto, Stanislaus County, California, 95356, United States
MODESTO, CA 953569718
Phone: (209) 557-1000
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
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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: 2019-08-29
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20051011000443 | I | Rheumatology | CA | TBD |
| I20190829000622 | I | Rheumatology | AZ | 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 | 46 | 46 | $0 |
Insurance plans in this area (ZIP 95337)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | CA | |
| Clinical Social Worker | CA | |
| Endocrinology, Internal Medicine, Endocrinology | CA | |
| Physician Assistant | CA | |
| Family Practice | CA | |
| Family Practice | CA | |
| Physician Assistant | FL | |
| Marriage And Family Therapist | CA | |
| Family Practice, Osteopathic Manipulative Medicine | CA | |
| Family Practice, Undersea And Hyperbaric Medicine | CA |
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