Loreta Kalish, M.D.
NPI 1184760423ActiveIndividual· Internal Medicine· Walnut Creek, CA
Internal Medicine (M.D.) in Walnut Creek, California, trained at Kansas City University of Physicians and Surgeons (class of 1980). Their prescriptions cost Medicare Part D more than their services did: $649,219 for 8,224 claims, against $119,979 paid for services in 2024. Bayer Healthcare Pharmaceuticals Inc. was the largest of 15 companies reporting payments in 2025, $792.76 in all, mostly food and beverage.
Overview
| NPI | 1184760423 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 30, 2007 |
| Last updated in NPPES | Sep 11, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A92290 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 431 |
|---|---|
| Services billed | 2,195 across 32 procedure codes |
| Paid by Medicare | $119,979 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,224 · 20,141 30-day fills |
|---|---|
| Patients | 683 |
| Total drug cost | $649,219 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | Kansas City University of Physicians and Surgeons |
|---|---|
| Graduation year | 1980 |
| Medicare specialty | Internal Medicine |
| 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
Other facilities
- American Home Health Care, LLCHome health agency · Dublin, CA
- Health Link Home Health AgencyHome health agency · San Francisco, CA
- Healthflex Home Health ServicesHome health agency · Oakland, CA
- John Muir Home Health ServicesHome health agency · Concord, CA
- Mary's Help Home Health Services, IncHome health agency · Vallejo, CA
Industry payments (Open Payments)
- 2025$792.76 · 32 payments from 15 companies
- 2024$965.05 · 38 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bayer Healthcare Pharmaceuticals Inc. | $131.07 | 5 |
| Exact Sciences Corporation | $121.77 | 4 |
| Lilly USA, LLC | $104.38 | 5 |
| Glaxosmithkline, LLC. | $94.54 | 4 |
| Sumitomo Pharma America, Inc. | $50.66 | 2 |
What the 2025 payments were for
- Food and Beverage$792.76 · 32 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 204 internal medicine physicians in Walnut Creek · All internal medicine physicians in California