Dr. Oksana B. Hirniak
- Gender: Female
- Experience: 17 years
- Graduated from: Philadelphia College Of Osteopathic Medicine
- Graduation year: 2004
- Sole propriator: No
- NPI: 1891750345
Dr. Oksana B. Hirniak D.O.
Family Physician
She is located at 277 Rancheros Drive Suite 100 in San Marcos, CA 92069. Can help patients with the following: Abdominal Pain, Breastfeeding and Lactation, Common Cold, Hypothyroidism, Influenza, Obesity. Her National Provider Identifier (NPI) number is 1891750345. Appointment can be made via the phone number (760) 291-6700. She also has a website where you can get more information. The website can be found at https://www.graybill.org/physicians/oksana-hirniak-do/. She is affiliated with 1 practices.
Conditions treated
Dr. Oksana B. Hirniak, being an family physician, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Oksana B. Hirniak.
- Abdominal Pain
- Aging In Place
- Anxiety
- Arthritis
- Asthma
- Autism
- Birth Control Counseling
- Breastfeeding and Lactation
- Chronic Obstructive Pulmonary Disease (COPD)
- Common Cold
- Diabetes
- Fever
- General Care
- Headache
- Heart Disease
- High Blood Pressure
- Hyperlipidemia
- Hypothyroidism
- Infant Care
- Influenza
- Migraine
- Mold Exposure
- Nausea and Vomiting
- Obesity
- Osteoarthritis (OA)
- Osteoporosis
- Pregnancy
- Prenatal Care
- Prescription Refill
- Thyroid Disease
- Women's Health
Procedures Performed by Dr. Oksana B. Hirniak
Medicare Enrollment
Dr. Oksana B. Hirniak is enrolled to bill Medicare as a Practitioner - Family Practice (also registered under: Practitioner - Osteopathic Manipulative Medicine) .
Bills through: Graybill Medical Group Inc
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Payments received
Drug payment
| AstraZeneca | $880 |
| Novo Nordisk | $782 |
| Janssen | $580 |
Other
| Food and Beverage | $4645 |
Studies
PHILADELPHIA COLLEGE OF OSTEOPATHIC MEDICINE
Graduated in 2004Other ways to reach out
- Website: https://www.graybill.org/physicians/oksana-hirniak-do/
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Questions & Answers
Where can you meet with Dr. Oksana B. Hirniak?
Dr. Oksana B. Hirniak's office is located at 277 Rancheros Drive Suite 100 in San Marcos, CA 92069.
What conditions does Dr. Oksana B. Hirniak treat?
Dr. Oksana B. Hirniak provides treatment for Abdominal Pain, Breastfeeding and Lactation, Common Cold, Hypothyroidism, Influenza, Obesity. For the full list see this list.
Does Dr. Oksana B. Hirniak have affiliation with practices?
Dr. Oksana B. Hirniak is affiliated with Graybill Medical Group - San Marcos Office.