NPI registry status
Active
2026 NPPES data Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist NPI 1013346089 PHARMD
Verify on CMS → Mary Weems, PHARMD
Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist in Sterling, Virginia.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 12,452 in Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
72
Medicare Part D claims · 64 beneficiaries · Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist avg: 256
Generic prescribing
0%
generic claims · 100% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Mary Weems, PHARMD filed 72 Medicare Part D claims in 2023 as a Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist in Sterling, Virginia, prescribing 0% generic.
- 72
- Part D claims, 2023
- 0%
- generic prescribing
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Mary Weems, PHARMD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
72 0th percentile higher than 0% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
What does the federal data show about Mary Weems, PHARMD?
Quality data not reportedPrimary specialty
Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist
Medicare Part D claims
72 72% vs specialty avg
Specialty distribution in Virginia
How Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist compares to other specialties among Virginia providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Mary Weems, PHARMD appears in the CMS NPPES registry as a Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist provider holding PHARMD credentials at 21398 PRICE CASCADES PLZ, Sterling, VA, 20164, with a listed phone of (703) 406-7048. NPI 1013346089 was issued on 11/11/2013.
Medicare Part D records for calendar year 2023 show 72 prescription claims written by this provider, covering 64 Medicare beneficiaries and totaling roughly $17K in drug spend, split 100% brand-name and 0% generic by claim count.
Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist is a mid-sized specialty nationwide, with 12,452 enrolled providers across 55 states and an average of 256 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1013346089 |
|---|---|
| Specialty | Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist |
| Credentials | PHARMD |
| Gender | Female |
| NPI Issued | 11/11/2013 |
Brand vs generic prescribing mix · Brand-heavy
Mary Weems, PHARMD - brand share 100.0%
Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist average
100% brand-name claims vs 0% generic, on 72 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
72
Total Claims
$17K
Total Drug Cost
64
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 72
- Total Day Supply
- 72
- Brand vs Generic
- 100% brand / 0% generic
- Brand Drug Cost
- $17K
- Generic Drug Cost
- $0
Patient Demographics
- Average Patient Age
- 72.1 years
- Avg HCC Risk Score
- 0.72
- Gender Split
- 56% female / 44% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Shingrix Varicella-Zoster Ge/As01b/Pf | 39 |
| Abrysvo "Rsv Vacc | N/A |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist in VA →
All providers in Virginia →
Compare specialties →
Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist Overview
How Mary Weems, PHARMD fits within the Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist landscape nationally.
12,452
Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist Providers in US
55
States with Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist
256
Avg Claims per Provider
Mary Weems, PHARMD's 72 claims are below the specialty average of 256.
Nearby Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist Providers in Virginia
Other clinicians with the same primary specialty enrolled in Virginia, drawn from the same CMS NPPES roster as Weems.
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Virginia medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
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Frequently Asked Questions
What is Mary Weems, PHARMD's specialty? ▼
Mary Weems, PHARMD specializes in Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist and practices in Sterling, Virginia. Credentials: PHARMD.
How much does Mary Weems, PHARMD prescribe under Medicare Part D? ▼
In 2023, Mary Weems, PHARMD wrote 72 Medicare Part D claims totaling $17K in drug costs for 64 beneficiaries.
Where is Mary Weems, PHARMD located? ▼
Mary Weems, PHARMD is located at 21398 PRICE CASCADES PLZ, Sterling, VA, 20164. Phone: (703) 406-7048.
What is Mary Weems, PHARMD's NPI number? ▼
Mary Weems, PHARMD's National Provider Identifier (NPI) is 1013346089, issued on 11/11/2013.
Does Mary Weems, PHARMD prescribe more brand-name or generic drugs? ▼
Mary Weems, PHARMD's prescribing is 100% brand-name and 0% generic drugs by claim count, with $17K in brand drug costs.
How many Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist providers are there in the US? ▼
There are 12,452 Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist providers across 55 states in the US. The average Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist provider writes 256 Medicare Part D claims per year.
What drugs does Mary Weems, PHARMD prescribe most often? ▼
Based on 2023 Medicare Part D data, Mary Weems, PHARMD's most frequently prescribed drugs include Shingrix, Abrysvo. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mary Weems, PHARMD accept Medicare? ▼
Mary Weems, PHARMD appears in CMS Medicare data with 72 Part D claims and 64 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mary Weems, PHARMD's credentials? ▼
Mary Weems, PHARMD's NPI is 1013346089 with credentials PHARMD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.