Mary Catherine Silver , PA
Physician Assistant β’ Eureka, CA
2367 Harrison Ave
Eureka, CA 955013216
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on June 9, 2005; this date does not establish years in practice.
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Published CMS data list 147 Medicare Part D prescriptions, including refills, in 2015.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2015. Published rows only; this is not a quality measure.
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Published Part D records, 2015:
- Olanzapine β 26 prescription fills, including refills.
- Quetiapine Fumarate β 25 prescription fills, including refills.
- Trazodone Hcl β 24 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2015. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 8 records in the table Β· Guide: How to read Medicare Part D prescriber data
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Medicare Part D prescriptions went from 453 in 2013 to 147 in 2015.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2013β2015.
Practice Location & Contact Primary Location
2367 Harrison Ave
Eureka, CA 955013216
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
193 standardized 30-day fills in 2015
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$5,220 in 2015
The total cost of these prescriptions in 2015, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2015.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2021β2025.
NPI first issued
2005
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, βDoes your provider accept Medicare as full payment?β
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Compared with the same specialty in Eureka and California
Billing and prescribing volume is not a quality rating.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Mary Silver are from 2015.
41 active clinicians are listed under Physician Assistant with a practice address in Eureka, CA (14,458 in California).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Eureka
17.1% of these 41 clinicians have the CMS telehealth indicator.
51.2% of these 41 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 68% from 453 in 2013 to 147 in 2015.
- 2013: 453
- 2014: 579
- 2015: 147
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30-day fills
30-day fills decreased 63% from 523 in 2013 to 193 in 2015.
- 2013: 523
- 2014: 694
- 2015: 193
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Part D drug cost
Part D drug cost decreased 86% from $36,037 in 2013 to $5,220 in 2015.
- 2013: $36,037
- 2014: $27,642
- 2015: $5,220
Sources: CMS Medicare Part D Prescribers (2015), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· Report an error.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2015.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Olanzapine | Olanzapine | 26 | 780 | $559.39 | β |
| Quetiapine Fumarate | Quetiapine Fumarate | 25 | 1,170 | $1,348.18 | β |
| Trazodone Hcl | Trazodone Hcl | 24 | 960 | $170.70 | β |
| Lamotrigine | Lamotrigine | 20 | 600 | $609.67 | β |
| Citalopram Hbr | Citalopram Hydrobromide | 14 | 900 | $154.38 | β |
| Clonazepam | Clonazepam | 14 | 333 | $88.41 | β |
| Venlafaxine Hcl Er | Venlafaxine Hcl | 12 | 480 | $1,021.93 | β |
| Methylphenidate Hcl | Methylphenidate Hcl | 12 | 360 | $1,267.61 | β |
Source: CMS Part D by Provider and Drug, 2015; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Career & Practice History
NPI enumerated June 09, 2005.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Physician Assistants in Eureka
- Amanda Steinheiser, PA-C
- Kristin Byrd, PA-C
- Everett Allen, PA-C
- Hilary Powell, PA
- Justin Spangler, PA
- Kirsten Blessing, PA-C
Mailing Address
2367 Harrison Ave
Eureka, CA 955013216
Phone: 7074431130