Shannon Chakedis
NPI 1134527690ActiveIndividual· Nurse Practitioner· Walnut Creek, CA
Nurse Practitioner with John Muir Physician Network, practicing in Walnut Creek, California. Their prescriptions cost Medicare Part D more than their services did: $7,274,629 for 1,705 claims, against $45,425 paid for services in 2024. Pfizer Inc. was the largest of 25 companies reporting payments in 2025, $2,272 in all, mostly food and beverage. Lists John Muir Medical Center - Concord Campus and 1 other hospital as hospital affiliations.
Overview
| NPI | 1134527690 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Dec 16, 2014 |
| Last updated in NPPES | Jul 11, 2025 |
| Certified by provider | Jul 11, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | NP95010200 | CA |
| Nurse Practitioner, Adult Health | 363LA2200X | COA.18791-NP | OH |
| Registered Nurse | 163W00000X | 766408 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nurse Practitioner (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 305 |
|---|---|
| Services billed | 597 across 7 procedure codes |
| Paid by Medicare | $45,425 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,705 · 2,524 30-day fills |
|---|---|
| Patients | 578 |
| Total drug cost | $7,274,629 |
| Generic share | 67% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- John Muir Physician NetworkPleasant Hill, CA · 494 clinicians
Hospital affiliations
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
Industry payments (Open Payments)
- 2025$2,272 · 93 payments from 25 companies
- 2024$678.50 · 29 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $236.74 | 10 |
| Merck Sharp & Dohme LLC | $218.99 | 9 |
| Daiichi Sankyo Inc. | $191.73 | 11 |
| Seagen Inc. | $183.99 | 2 |
| Janssen Biotech, Inc. | $166.01 | 8 |
What the 2025 payments were for
- Food and Beverage$2,072 · 90 payments
- Education$199.98 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 74 nurse practitioners in Walnut Creek · All nurse practitioners in California