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OKSANA B HIRNIAK D.O.
NPI 1891750345
Family Medicine in San Marcos, CA

Active since April 18, 2006PECOS EnrolledAccepts Medicare Assignment
277 RANCHEROS DR STE 100, SAN MARCOS, CA 92069(760) 291-6700(760) 471-0513 Get Directions Write a Review

NPPES record last updated: December 12, 2024. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Dec 12, 2024, Nov 18, 2020 (2 updates tracked since 2020).

About Oksana B Hirniak D.o. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

OKSANA B HIRNIAK D.O. (NPI 1891750345) is an individual family medicine provider in San Marcos, California, licensed in California (20A11789) and active in the NPI registry since April 2006. She is enrolled in Medicare PECOS and is a graduate of Philadelphia College Of Osteopathic Medicine (2004).

NPPES Registry Identity

NPI1891750345
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameOKSANA B HIRNIAKCredential: D.O.
Location Address277 RANCHEROS DR STE 100San Marcos, CA 92069-2959
Mailing Address225 E 2nd AveEscondido, CA 92025-4249 · (760) 291-6700 · Fax (760) 471-0513
Phone(760) 291-6700
Fax(760) 471-0513
Sole ProprietorNo
Medical School CMSPhiladelphia College Of Osteopathic MedicineGraduated 2004
Enumeration DateApril 18, 2006
Last NPPES UpdateDecember 12, 20242 updates tracked since enumeration
NPPES CertifiedDecember 12, 2024
✔ NPI 1891750345 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · 20A11789
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
277 RANCHEROS DR STE 100, San Marcos, CA 92069
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Other Identifiers 1

OtherER453YCA · Medicare Ptan

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Oksana B Hirniak D.o. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5597948539
PECOS Enrollment IDI20110329000178
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
225 services115 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
19 services19 patients
Screening mammography 77067
Screening mammography is a preventative measure that uses low-dose X-rays to take images of the chest area. It's a key tool in early detection of abnormalities, helping to identify issues before they become symptomatic. It is recommended annually for certain age groups.
14 services14 patients
Dxa bone density measurement of hip, pelvis, spine 77080
A DXA bone density measurement is a simple, quick, and non-invasive procedure that assesses the strength of your bones. This test uses X-rays to measure the amount of minerals, mainly calcium, in the hip, pelvis, and spine. It helps in early detection of osteoporosis or other bone diseases.
13 services13 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92069 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$94.87 typical visit price
range $62.10 – $184.71
Typical copayment $23.71 (range $15.52 – $46.17)
Most-billed visit code 99203
Established Patient
$108.42 typical visit price
range $20.62 – $151.42
Typical copayment $27.10 (range $5.15 – $37.85)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 5

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Tubing with integrated heating element for use with positive airway pressure device A4604
DME-Other DME · category DE001N
3 suppliers14 claims14 services$34.57 avg. paid by Medicare
Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034
DME-Other DME · category DE001N
3 suppliers13 claims13 services$39.79 avg. paid by Medicare
Headgear used with positive airway pressure device A7035
DME-Other DME · category DE001N
3 suppliers11 claims11 services$16.20 avg. paid by Medicare
Filter, disposable, used with positive airway pressure device A7038
DME-Other DME · category DE001N
3 suppliers21 claims118 services$1.57 avg. paid by Medicare
Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
5 suppliers26 claims26 services$176.52 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ISELA PENUNURI MD
Family Medicine
277 RANCHEROS DR STE 100
SAN MARCOS, CA 92069
San Diego County (760) 291-6700
JENNIFER A MONTGOMERY PA-C
Physician Assistant
277 RANCHEROS DR STE 100
SAN MARCOS, CA 92069
San Diego County (760) 291-6700

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Oksana Hirniak's NPI number?

The NPI number for Oksana Hirniak is 1891750345. It was assigned to this individual provider in the NPPES registry on April 18, 2006.

Where is Oksana Hirniak located?

Oksana Hirniak practices at 277 Rancheros Dr Ste 100, San Marcos, CA 92069. The listed phone number is (760) 291-6700.

What is Oksana Hirniak's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Oksana Hirniak enrolled in Medicare?

Yes. Oksana Hirniak is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Oksana Hirniak was last updated on December 12, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.