NPI registry status
Active
2026 NPPES data Surgical Physician Assistant NPI 1326012121 PA-C
Verify on CMS → Benjamin Klinkhammer, PA-C
Surgical Physician Assistant in Sioux Falls, South Dakota.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,119 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
784
Medicare Part D claims · 301 beneficiaries · Surgical Physician Assistant avg: 316
Generic prescribing
97%
generic claims · 3% brand-name · higher generic rates reduce patient out-of-pocket costs
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
Benjamin Klinkhammer, PA-C filed 784 Medicare Part D claims in 2023 as a Surgical Physician Assistant in Sioux Falls, South Dakota, prescribing 97% generic.
- 784
- Part D claims, 2023
- 97%
- 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.
Benjamin Klinkhammer, PA-C's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
784 Top 29% higher than 71% 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 Benjamin Klinkhammer, PA-C?
Quality data not reportedPrimary specialty
Surgical Physician Assistant
Medicare Part D claims
784 148% vs specialty avg
Specialty distribution in South Dakota
How Surgical Physician Assistant compares to other specialties among South Dakota 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 Surgical Physician Assistant. 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).
Benjamin Klinkhammer, PA-C appears in the CMS NPPES registry as a Surgical Physician Assistant provider holding PA-C credentials at 201 W 69TH ST, Sioux Falls, SD, 57108, with a listed phone of (605) 336-0635. NPI 1326012121 was issued on 02/16/2006.
Medicare Part D records for calendar year 2023 show 784 prescription claims written by this provider, covering 301 Medicare beneficiaries and totaling roughly $7K in drug spend, split 3% brand-name and 97% generic by claim count, with an opioid prescribing rate of 36.0%.
Surgical Physician Assistant is a mid-sized specialty nationwide, with 16,119 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 | 1326012121 |
|---|---|
| Specialty | Surgical Physician Assistant |
| Credentials | PA-C |
| Gender | Male |
| NPI Issued | 02/16/2006 |
Hospital and facility affiliations
Facilities where Benjamin Klinkhammer, PA-C 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.
Avera Mckennan
Sioux Falls, SD
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
Benjamin Klinkhammer, PA-C - brand share 3.0%
Surgical Physician Assistant average
3% brand-name claims vs 97% generic, on 784 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.
784
Total Claims
$7K
Total Drug Cost
301
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 811
- Total Day Supply
- 9,718
- Brand vs Generic
- 3% brand / 97% generic
- Brand Drug Cost
- $4K
- Generic Drug Cost
- $4K
- Opioid Claims
- 282 (36.0% rate)
- Antibiotic Claims
- 197
Patient Demographics
- Average Patient Age
- 72.2 years
- Avg HCC Risk Score
- 0.84
- Gender Split
- 70% female / 30% male
- Age Distribution
- <65: 12, 65-74: 199, 75-84: 70, 85+: 20
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Benjamin Klinkhammer, PA-C prescribes most
Top Medicare Part D drugs by claim count, 2023
- Meloxicam
Meloxicam
229 claims
- Amoxicillin
Amoxicillin
143 claims
- Oxycodone Hcl 88
Oxycodone Hcl
88 claims
- Tramadol Hcl 85
Tramadol Hcl
85 claims
- Hydrocodone-Acetam… 78
Hydrocodone-Acetaminophen
78 claims
- Clindamycin Hcl 35
Clindamycin Hcl
35 claims
- Hydromorphone Hcl 27
Hydromorphone Hcl
27 claims
- Lorazepam 20
Lorazepam
20 claims
| Drug | Claims |
|---|---|
| Meloxicam | 229 |
| Amoxicillin | 143 |
| Oxycodone Hcl | 88 |
| Tramadol Hcl | 85 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 78 |
| Clindamycin Hcl | 35 |
| Hydromorphone Hcl | 27 |
| Lorazepam | 20 |
| Methylprednisolone | 14 |
| Ondansetron Odt Ondansetron | 14 |
* 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 Benjamin Klinkhammer, PA-C fits within the Surgical Physician Assistant landscape nationally.
16,119
Surgical Physician Assistant Providers in US
54
States with Surgical Physician Assistant
316
Avg Claims per Provider
Benjamin Klinkhammer, PA-C's 784 claims are above the specialty average of 316.
Nearby Surgical Physician Assistant Providers in South Dakota
Other clinicians with the same primary specialty enrolled in South Dakota, drawn from the same CMS NPPES roster as Klinkhammer.
Tyson Allen
Dakota Dunes, SD
Dr. Trisha Anderson
PA-C
Dakota Dunes, SD
Diana Bader
Hot Springs, SD
Dr. Chase Beiermann
PA
Dakota Dunes, SD
Dr. Trae Bergh
PA-C
Dakota Dunes, SD
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 South Dakota 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 Benjamin Klinkhammer, PA-C's specialty? ▼
Benjamin Klinkhammer, PA-C specializes in Surgical Physician Assistant and practices in Sioux Falls, South Dakota. Credentials: PA-C.
How much does Benjamin Klinkhammer, PA-C prescribe under Medicare Part D? ▼
In 2023, Benjamin Klinkhammer, PA-C wrote 784 Medicare Part D claims totaling $7K in drug costs for 301 beneficiaries.
Where is Benjamin Klinkhammer, PA-C located? ▼
Benjamin Klinkhammer, PA-C is located at 201 W 69TH ST, Sioux Falls, SD, 57108. Phone: (605) 336-0635.
What is Benjamin Klinkhammer, PA-C's NPI number? ▼
Benjamin Klinkhammer, PA-C's National Provider Identifier (NPI) is 1326012121, issued on 02/16/2006.
Does Benjamin Klinkhammer, PA-C prescribe more brand-name or generic drugs? ▼
Benjamin Klinkhammer, PA-C's prescribing is 3% brand-name and 97% generic drugs by claim count, with $4K in brand drug costs.
Does Benjamin Klinkhammer, PA-C prescribe opioids? ▼
Yes, Benjamin Klinkhammer, PA-C had 282 opioid claims in 2023 with an opioid prescribing rate of 36.0%.
How many Surgical Physician Assistant providers are there in the US? ▼
There are 16,119 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 Benjamin Klinkhammer, PA-C prescribe most often? ▼
Based on 2023 Medicare Part D data, Benjamin Klinkhammer, PA-C's most frequently prescribed drugs include Meloxicam, Amoxicillin, Oxycodone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Benjamin Klinkhammer, PA-C accept Medicare? ▼
Benjamin Klinkhammer, PA-C appears in CMS Medicare data with 784 Part D claims and 301 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Benjamin Klinkhammer, PA-C's credentials? ▼
Benjamin Klinkhammer, PA-C's NPI is 1326012121 with credentials PA-C. 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
Compiled from official public sources by the PlainDoctor editorial team.