NPI registry status
Active
2026 NPPES data Surgical Physician Assistant NPI 1629011226 P.A.
Verify on CMS → William Polhamus, P.A.
Surgical Physician Assistant in Midlothian, 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 16,179 in Surgical Physician Assistant, 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
789
Medicare Part D claims · 318 beneficiaries · Surgical Physician Assistant avg: 316
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
76.4/100
▼ 7 pts below national avg 83.1 · Above neutral
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
William Polhamus, P.A. reported a CMS MIPS final score of 76.4/100 - below the 83.1 national average - and filed 789 Medicare Part D claims in 2023.
- 76.4/100
- MIPS score · -7 vs avg
- 789
- Part D claims, 2023
- 93%
- 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.
William Polhamus, P.A.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
76 21st percentile higher than 21% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where William Polhamus, P.A. sits
This provider among surgical physician assistant peers
Across the 3,708 surgical physician assistant providers who report both Medicare Part D prescribing and a MIPS quality score, William Polhamus, P.A. writes more Part D claims than 91% of them and scores higher on MIPS quality than 16% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one surgical physician assistant peer from a representative sample of 60; the gold marker is William Polhamus, P.A.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about William Polhamus, P.A.?
Below national averagePrimary specialty
Surgical Physician Assistant
Medicare Part D claims
789 150% vs specialty avg
MIPS final score
76.4/100 6.7 pts vs avg
Specialty distribution in Virginia
How Surgical Physician Assistant compares to other specialties among Virginia providers
Medicare quality performance, MIPS
William Polhamus, P.A.'s 2023 MIPS final score plotted against the Surgical Physician Assistant national average
- MIPS Final Score
- 76.4/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Surgical Physician Assistant) - 76.4/100 vs national avg 83.1
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).
William Polhamus, P.A. appears in the CMS NPPES registry as a Surgical Physician Assistant provider holding P.A. credentials at 13710 ST FRANCIS BLVD, Midlothian, VA, 23114, with a listed phone of (804) 594-7300. NPI 1629011226 was issued on 06/13/2006.
Medicare Part D records for calendar year 2023 show 789 prescription claims written by this provider, covering 318 Medicare beneficiaries and totaling roughly $14K in drug spend, split 7% brand-name and 93% generic by claim count, with an opioid prescribing rate of 31.2%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 76.4/100 for the 2023 performance year (Quality 67.2, Cost 54.1), compared with the national average of 83.1.
Surgical Physician Assistant is a mid-sized specialty nationwide, with 16,179 enrolled providers across 54 states and an average of 316 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 | 1629011226 |
|---|---|
| Specialty | Surgical Physician Assistant |
| Credentials | P.A. |
| Gender | Male |
| NPI Issued | 06/13/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
76.3699
Final Score
Avg: 83.1
67.1603
Quality
54.0727
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where William Polhamus, P.A. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Bon Secours Medical Group Richmond Specialty Care LLC
Midlothian, VA
Orthovirginia Inc
North Chesterfield, VA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Generic-heavy
William Polhamus, P.A. - brand share 7.0%
Surgical Physician Assistant average
7% brand-name claims vs 93% generic, on 789 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.
789
Total Claims
$14K
Total Drug Cost
318
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 812
- Total Day Supply
- 10,036
- Brand vs Generic
- 7% brand / 93% generic
- Brand Drug Cost
- $8K
- Generic Drug Cost
- $6K
- Opioid Claims
- 246 (31.2% rate)
- Antibiotic Claims
- 247
Patient Demographics
- Average Patient Age
- 73.1 years
- Avg HCC Risk Score
- 0.93
- Gender Split
- 73% female / 27% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What William Polhamus, P.A. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Amoxicillin
Amoxicillin
169 claims
- Meloxicam
Meloxicam
104 claims
- Hydromorphone Hcl
Hydromorphone Hcl
87 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
83 claims
- Cephalexin 67
Cephalexin
67 claims
- Diclofenac Sodium 66
Diclofenac Sodium
66 claims
- Oxycodone Hcl 43
Oxycodone Hcl
43 claims
- Ondansetron Hcl 32
Ondansetron Hcl
32 claims
| Drug | Claims |
|---|---|
| Amoxicillin | 169 |
| Meloxicam | 104 |
| Hydromorphone Hcl | 87 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 83 |
| Cephalexin | 67 |
| Diclofenac Sodium | 66 |
| Oxycodone Hcl | 43 |
| Ondansetron Hcl | 32 |
| Tramadol Hcl | 31 |
| Gabapentin | 27 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Surgical Physician Assistant Overview
How William Polhamus, P.A. fits within the Surgical Physician Assistant landscape nationally.
16,179
Surgical Physician Assistant Providers in US
54
States with Surgical Physician Assistant
316
Avg Claims per Provider
William Polhamus, P.A.'s 789 claims are above the specialty average of 316.
Nearby Surgical Physician Assistant Providers in Virginia
Other clinicians with the same primary specialty enrolled in Virginia, drawn from the same CMS NPPES roster as Polhamus.
Leonard Abadam
Quantico, VA
Dr. Alan Abrams
PA-C
Hampton, VA
Dr. Kathryn Adams
PA-C
Woodbridge, VA
Rebecca Adams
Roanoke, VA
Dr. Jamel Akrout
M.D.
Falls Church, VA
Compare Surgical Physician Assistant nationally: see state-by-state distribution →
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 Surgical Physician Assistant 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.
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Frequently Asked Questions
What is William Polhamus, P.A.'s specialty? ▼
William Polhamus, P.A. specializes in Surgical Physician Assistant and practices in Midlothian, Virginia. Credentials: P.A..
How much does William Polhamus, P.A. prescribe under Medicare Part D? ▼
In 2023, William Polhamus, P.A. wrote 789 Medicare Part D claims totaling $14K in drug costs for 318 beneficiaries.
What is William Polhamus, P.A.'s Medicare quality score? ▼
William Polhamus, P.A. has a CMS MIPS Final Score of 76.4/100 (Quality: 67.2, Cost: 54.1). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is William Polhamus, P.A. located? ▼
William Polhamus, P.A. is located at 13710 ST FRANCIS BLVD, Midlothian, VA, 23114. Phone: (804) 594-7300.
What is William Polhamus, P.A.'s NPI number? ▼
William Polhamus, P.A.'s National Provider Identifier (NPI) is 1629011226, issued on 06/13/2006.
Does William Polhamus, P.A. prescribe more brand-name or generic drugs? ▼
William Polhamus, P.A.'s prescribing is 7% brand-name and 93% generic drugs by claim count, with $8K in brand drug costs.
Does William Polhamus, P.A. prescribe opioids? ▼
Yes, William Polhamus, P.A. had 246 opioid claims in 2023 with an opioid prescribing rate of 31.2%.
How many Surgical Physician Assistant providers are there in the US? ▼
There are 16,179 Surgical Physician Assistant providers across 54 states in the US. The average Surgical Physician Assistant provider writes 316 Medicare Part D claims per year.
What drugs does William Polhamus, P.A. prescribe most often? ▼
Based on 2023 Medicare Part D data, William Polhamus, P.A.'s most frequently prescribed drugs include Amoxicillin, Meloxicam, Hydromorphone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does William Polhamus, P.A. accept Medicare? ▼
William Polhamus, P.A. appears in CMS Medicare data with 789 Part D claims and 318 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify William Polhamus, P.A.'s credentials? ▼
William Polhamus, P.A.'s NPI is 1629011226 with credentials P.A.. 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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
Compiled from official public sources by the PlainDoctor editorial team.
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.