2026 NPPES data Physician Assistant NPI 1609284645 PA
Verify on CMS →

CHRISTOPHER PERRY, PA

Physician Assistant in O FALLON, Missouri. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
331
Medicare Part D claims · 219 beneficiaries · Physician Assistant avg: 790
Generic prescribing
96%
generic claims · 4% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

CHRISTOPHER PERRY, PA filed 331 Medicare Part D claims in 2023 as a Physician Assistant in O FALLON, Missouri, prescribing 96% generic.

331
Part D claims, 2023
96%
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.

CHRISTOPHER PERRY, PA's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

331 Top 43% higher than 57% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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 CHRISTOPHER PERRY, PA?

Quality data not reported

NPI registry status

Active

Issued 07/22/2014

NPI 1609284645

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

331 58% vs specialty avg

2023 prescription claims

Specialty avg: 790

Specialty distribution in Missouri

How Physician Assistant compares to other specialties among Missouri providers

Missouri providers

Physician Assistant share within Missouri

1. Physician Assistant42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Physician Assistant share within Missouri

Specialty board-certification context

Estimated specialty board-certified rate — Physician Assistant (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Physician Assistant ABMS/AOA estimate

Est. board-certified rate (Physician Assistant) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Physician Assistant) — ABMS / AOA estimate

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).

CHRISTOPHER PERRY, PA appears in the CMS NPPES registry as a Physician Assistant provider holding PA credentials at 2 PROGRESS POINT PKWY, O FALLON, MO, 63368, with a listed phone of (314) 362-9123. NPI 1609284645 was issued on 07/22/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what PERRY most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 331 prescription claims written by this provider, covering 219 Medicare beneficiaries and totaling roughly $12K in drug spend, split 4% brand-name and 96% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Physician Assistant is a high-volume specialty nationwide, with 149,975 enrolled providers across 56 states and an average of 790 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

2 PROGRESS POINT PKWY
O FALLON, MO 63368

Provider Details

NPI 1609284645
Specialty Physician Assistant
Credentials PA
Gender Male
NPI Issued 07/22/2014

Hospital and facility affiliations

Facilities where CHRISTOPHER PERRY, PA 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.

WASHINGTON UNIVERSITY COMMUNITY SPECIALISTS, LLC
SAINT PETERS, MO

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

CHRISTOPHER PERRY, PA — brand share 4.0%
Specialty average (est.)

4% brand-name claims vs 96% generic, on 331 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.

331
Total Claims
$12K
Total Drug Cost
219
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
380
Total Day Supply
5,211
Brand vs Generic
4% brand / 96% generic
Brand Drug Cost
$10K
Generic Drug Cost
$3K
Antibiotic Claims
138

Patient Demographics

Average Patient Age
69.8 years
Avg HCC Risk Score
1.53
Gender Split
62% female / 38% male
Age Distribution
<65: 50, 65-74: 89, 75-84: 61, 85+: 19

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What CHRISTOPHER PERRY, PA prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Ondansetron Odt
Ondansetron
63
Cephalexin
37
Ciprofloxacin Hcl
28
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
19
Cyclobenzaprine Hcl
15
Prednisone
15
Sulfamethoxazole-Trimethoprim
Sulfamethoxazole/Trimethoprim
15
Ibuprofen
12

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Physician Assistant Overview

How CHRISTOPHER PERRY, PA fits within the Physician Assistant landscape nationally.

149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider

CHRISTOPHER PERRY, PA's 331 claims are below the specialty average of 790.

Nearby Physician Assistant Providers in Missouri

Other clinicians with the same primary specialty enrolled in Missouri, drawn from the same CMS NPPES roster as PERRY.

Compare Physician Assistant nationally: see state-by-state distribution →

Frequently Asked Questions

What is CHRISTOPHER PERRY, PA's specialty?
CHRISTOPHER PERRY, PA specializes in Physician Assistant and practices in O FALLON, Missouri. Credentials: PA.
How much does CHRISTOPHER PERRY, PA prescribe under Medicare Part D?
In 2023, CHRISTOPHER PERRY, PA wrote 331 Medicare Part D claims totaling $12K in drug costs for 219 beneficiaries.
Where is CHRISTOPHER PERRY, PA located?
CHRISTOPHER PERRY, PA is located at 2 PROGRESS POINT PKWY, O FALLON, MO, 63368. Phone: (314) 362-9123.
What is CHRISTOPHER PERRY, PA's NPI number?
CHRISTOPHER PERRY, PA's National Provider Identifier (NPI) is 1609284645, issued on 07/22/2014.
Does CHRISTOPHER PERRY, PA prescribe more brand-name or generic drugs?
CHRISTOPHER PERRY, PA's prescribing is 4% brand-name and 96% generic drugs by claim count, with $10K in brand drug costs.
How many Physician Assistant providers are there in the US?
There are 149,975 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does CHRISTOPHER PERRY, PA prescribe most often?
Based on 2023 Medicare Part D data, CHRISTOPHER PERRY, PA's most frequently prescribed drugs include Ondansetron Odt, Cephalexin, Ciprofloxacin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CHRISTOPHER PERRY, PA accept Medicare?
CHRISTOPHER PERRY, PA appears in CMS Medicare data with 331 Part D claims and 219 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CHRISTOPHER PERRY, PA's credentials?
CHRISTOPHER PERRY, PA's NPI is 1609284645 with credentials PA. 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

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