Ana Cecilia Ortiz-Guerrero, MD
NPI 1275776536ActiveIndividual· Internal Medicine, Nephrology· Torrance, CA
Internal Medicine, Nephrology (MD) with Internal Medicine and Nephrology Med. Group Inc., practicing in Torrance, California. Their prescriptions cost Medicare Part D more than their services did: $574,673 for 4,837 claims, against $278,515 paid for services in 2024. Otsuka America Pharmaceutical, Inc. was the largest of 24 companies reporting payments in 2025, $1,962 in all, mostly food and beverage. Lists Cedars-Sinai Medical Center and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1275776536 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 15, 2009 |
| Last updated in NPPES | Feb 28, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | A117719 | 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 - Nephrology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 484 |
|---|---|
| Services billed | 2,180 across 17 procedure codes |
| Paid by Medicare | $278,515 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,837 · 12,156 30-day fills |
|---|---|
| Patients | 587 |
| Total drug cost | $574,673 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 2004 |
|---|---|
| Medicare specialty | Nephrology |
| Telehealth | Offers telehealth |
Medical group
- Internal Medicine and Nephrology Med. Group Inc.Torrance, CA · 7 clinicians
Hospital affiliations
- Cedars-Sinai Medical CenterLos Angeles, CA
- Providence Little Co of Mary Med Ctr San PedroSan Pedro, CA
- Providence Little Company of Mary Med Ctr TorranceTorrance, CA
- Torrance Memorial Medical CenterTorrance, CA
Other facilities
- Davita Rolling Hills DialysisDialysis facility · Torrance, CA
- Davita Torrance Emerald DialysisDialysis facility · Torrance, CA
- Usrc Lomita DialysisDialysis facility · Lomita, CA
Industry payments (Open Payments)
- 2025$1,962 · 94 payments from 24 companies
- 2024$2,728 · 152 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Otsuka America Pharmaceutical, Inc. | $250.77 | 9 |
| Amgen Inc. | $227.55 | 11 |
| Travere Therapeutics, Inc. | $208.90 | 15 |
| Akebia Therapeutics Inc | $152.36 | 7 |
| Novo Nordisk Inc | $138.17 | 7 |
What the 2025 payments were for
- Food and Beverage$1,961 · 93 payments
- Education$0.80 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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