Mary Ellen Wilkosz, FNP
NPI 1457565814 · Family Nurse Practitioner · Novato, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Ellen Wilkosz, FNP is a Family Nurse Practitioner provider in Novato, CA (NPI 1457565814).
Provider details
- NPI number
- 1457565814
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- N378008 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
182 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 130 | $93 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 35 | $132 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 17 | $130 |
Typical Medicare-allowed amounts for these services range $93–$132 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 67 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 628 | 265 |
| Levothyroxine Sodium | 348 | 145 |
| Amlodipine Besylate | 249 | 108 |
| Lisinopril | 233 | 98 |
| Losartan Potassium | 191 | 83 |
| Rosuvastatin Calcium | 140 | 58 |
| Metoprolol Succinate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$106 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
- 2007-05-09
- Last updated
- 2010-07-21
Frequently asked questions
- What is Mary Ellen Wilkosz's NPI number?
- Mary Ellen Wilkosz's National Provider Identifier (NPI) is 1457565814, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Ellen Wilkosz's specialty?
- Mary Ellen Wilkosz is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Ellen Wilkosz located?
- Mary Ellen Wilkosz's practice location on file with NPPES is 165 Rowland Way #105, Novato, CA 94945.
- What is Mary Ellen Wilkosz's phone number?
- The practice phone number listed in the NPPES registry for Mary Ellen Wilkosz is (415) 897-2776.
- Does Mary Ellen Wilkosz accept Medicare?
- Mary Ellen Wilkosz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Ellen Wilkosz's NPI active?
- Yes — Mary Ellen Wilkosz's NPI (1457565814) is active in the NPPES registry as of the last update on 2010-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.