Karen Reardon, MD
NPI 1013095827 · Rheumatology Physician · Manteca, CA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Reardon, MD is a Rheumatology Physician provider in Manteca, CA (NPI 1013095827).
Provider details
- NPI number
- 1013095827
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- G74304 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
4 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 36 | 26 |
| Hydroxychloroquine Sulfate | 15 | 13 |
| Methotrexate Sodiumbrand: Methotrexate | 11 | — |
| Nabumetone | 11 | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (3)
- 6600 Madison AvenueSte 2Carmichael, CA 95608-0645Phone: (209) 284-4561Fax: (209) 284-4562
- 2510 Airpark DriveSte 305Redding, CA 96001-2462Phone: (209) 284-4561Fax: (209) 284-4562
- 530 W Eaton AvenueSte CTracy, CA 95376-3454Phone: (209) 284-4561Fax: (209) 284-4562
Registry dates
- Enumerated
- 2006-11-01
- Last updated
- 2024-03-27
- Certified
- 2024-03-27
Frequently asked questions
- What is Karen Reardon's NPI number?
- Karen Reardon's National Provider Identifier (NPI) is 1013095827, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Reardon's specialty?
- Karen Reardon is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Reardon located?
- Karen Reardon's practice location on file with NPPES is 1079 Eucalyptus Street, Manteca, CA 95337-4317.
- What is Karen Reardon's phone number?
- The practice phone number listed in the NPPES registry for Karen Reardon is (209) 284-4561.
- Does Karen Reardon accept Medicare?
- Karen Reardon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Reardon's NPI active?
- Yes — Karen Reardon's NPI (1013095827) is active in the NPPES registry as of the last update on 2024-03-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.