Mara Berezniak, D.O.
NPI 1770535585 · Family Medicine Physician · Penn Valley, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mara Berezniak, D.O. is a Family Medicine Physician provider in Penn Valley, CA (NPI 1770535585).
Provider details
- NPI number
- 1770535585
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- 20A7940 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,986 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 447 | $135 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 417 | $96 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 308 | $139 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 211 | $21 |
| Urinalysis, Manual Test81002 | 98 | $3 |
| Advance Care Planning, First 30 Minutes99497 | 88 | $86 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 108 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 432 | 126 |
| Atorvastatin Calcium | 370 | 116 |
| Lisinopril | 339 | 110 |
| Hydrochlorothiazide | 240 | 75 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 239 | 49 |
| Simvastatin | 213 | 61 |
| Losartan Potassium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$18 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-17
- Last updated
- 2025-10-24
- Certified
- 2025-10-24
Frequently asked questions
- What is Mara Berezniak's NPI number?
- Mara Berezniak's National Provider Identifier (NPI) is 1770535585, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mara Berezniak's specialty?
- Mara Berezniak is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mara Berezniak located?
- Mara Berezniak's practice location on file with NPPES is 11400 Pleasant Valley Rd, Penn Valley, CA 95946-9001.
- What is Mara Berezniak's phone number?
- The practice phone number listed in the NPPES registry for Mara Berezniak is (530) 432-7023.
- Does Mara Berezniak accept Medicare?
- Mara Berezniak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mara Berezniak's NPI active?
- Yes — Mara Berezniak's NPI (1770535585) is active in the NPPES registry as of the last update on 2025-10-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.