2026 NPPES data Physician Assistant NPI 1407878234 P.A-C
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THOMAS CHAMBERS, P.A-C

Physician Assistant in COEUR D ALENE, Idaho. 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
462
Medicare Part D claims · 298 beneficiaries · Physician Assistant avg: 790
MIPS score
94.9134/100
▲ 12 pts above national avg 83.1 · [object Object]
What the federal data reveals: THOMAS CHAMBERS, P.A-C is a Physician Assistant ([object Object]) practicing in COEUR D ALENE, Idaho with a Medicare Part D prescribing footprint of 462 claims across 298 beneficiaries . Their CMS MIPS Final Score of 94.9134/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What the federal data shows

THOMAS CHAMBERS, P.A-C reported a CMS MIPS final score of 94.9134/100 — above the 83.1 national average — and filed 462 Medicare Part D claims in 2023.

94.9134/100
MIPS score · +12 vs avg
462
Part D claims, 2023

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.

THOMAS CHAMBERS, P.A-C's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

95 Top 25% higher than 75% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). Below this entry. 90–100: 189,403 scored providers (40%). This entry sits in this band. This provider 0 100 every MIPS-scored clinician, bucketed by value

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

THOMAS CHAMBERS, P.A-C at a glance

High performer (top quartile)

NPI registry status

Active

Issued 07/24/2006

NPI 1407878234

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

462 42% vs specialty avg

2023 prescription claims

Specialty avg: 790

MIPS final score

94.9134/100 11.813400000000001% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Idaho

How Physician Assistant compares to other specialties among Idaho providers

Idaho providers

Physician Assistant share within Idaho

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

Medicare quality performance — MIPS

THOMAS CHAMBERS, P.A-C's 2023 MIPS final score plotted against the Physician Assistant national average

High performer (top quartile)
MIPS Final Score
94.9134/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Physician Assistant) — 94.9134/100 vs national avg 83.1

0%100%National avg83%94.9%
MIPS final score (Physician Assistant) — 94.9134/100 vs national avg 83.1

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).

THOMAS CHAMBERS, P.A-C is a Physician Assistant provider practicing in COEUR D ALENE, Idaho, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: P.A-C. NPI: 1407878234. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

THOMAS CHAMBERS, P.A-C appears in the CMS NPPES registry as a Physician Assistant provider holding P.A-C credentials at 2003 KOOTENAI HEALTH WAY, COEUR D ALENE, ID, 83814, with a listed phone of (208) 625-5700. NPI 1407878234 was issued on 07/24/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHAMBERS 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 462 prescription claims written by this provider, covering 298 Medicare beneficiaries and totaling roughly $7K in drug spend, with an opioid prescribing rate of 22.3%. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 94.9134/100 for the 2023 performance year (Quality 87.8394), compared with the national average of 83.1.

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

2003 KOOTENAI HEALTH WAY
COEUR D ALENE, ID 83814

Provider Details

NPI 1407878234
Specialty Physician Assistant
Credentials P.A-C
Gender Male
NPI Issued 07/24/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

94.9134
Final Score
Avg: 83.1
87.8394
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

462
Total Claims
$7K
Total Drug Cost
298
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
467
Total Day Supply
4,596
Generic Drug Cost
$5K
Opioid Claims
103 (22.3% rate)
Antibiotic Claims
101

Patient Demographics

Average Patient Age
69.4 years
Avg HCC Risk Score
1.38
Gender Split
60% female / 40% male
Age Distribution
<65: 74, 65-74: 112, 75-84: 86, 85+: 26

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
80
Prednisone
33
Cephalexin
25
Ondansetron Odt
Ondansetron
23
Methylprednisolone
19
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
15
Ciprofloxacin Hcl
11
Meclizine Hcl
11

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

Physician Assistant Overview

How THOMAS CHAMBERS, P.A-C fits within the Physician Assistant landscape nationally.

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

THOMAS CHAMBERS, P.A-C's 462 claims are below the specialty average of 790.

Nearby Physician Assistant Providers in Idaho

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

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

Frequently Asked Questions

What is THOMAS CHAMBERS, P.A-C's specialty?
THOMAS CHAMBERS, P.A-C specializes in Physician Assistant and practices in COEUR D ALENE, Idaho. Credentials: P.A-C.
How much does THOMAS CHAMBERS, P.A-C prescribe under Medicare Part D?
In 2023, THOMAS CHAMBERS, P.A-C wrote 462 Medicare Part D claims totaling $7K in drug costs for 298 beneficiaries.
What is THOMAS CHAMBERS, P.A-C's Medicare quality score?
THOMAS CHAMBERS, P.A-C has a CMS MIPS Final Score of 94.9134/100 (Quality: 87.8394). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is THOMAS CHAMBERS, P.A-C located?
THOMAS CHAMBERS, P.A-C is located at 2003 KOOTENAI HEALTH WAY, COEUR D ALENE, ID, 83814. Phone: (208) 625-5700.
What is THOMAS CHAMBERS, P.A-C's NPI number?
THOMAS CHAMBERS, P.A-C's National Provider Identifier (NPI) is 1407878234, issued on 07/24/2006.
Does THOMAS CHAMBERS, P.A-C prescribe opioids?
Yes, THOMAS CHAMBERS, P.A-C had 103 opioid claims in 2023 with an opioid prescribing rate of 22.3%.
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 THOMAS CHAMBERS, P.A-C prescribe most often?
Based on 2023 Medicare Part D data, THOMAS CHAMBERS, P.A-C's most frequently prescribed drugs include Hydrocodone-Acetaminophen, Prednisone, Cephalexin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does THOMAS CHAMBERS, P.A-C accept Medicare?
THOMAS CHAMBERS, P.A-C appears in CMS Medicare data with 462 Part D claims and 298 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify THOMAS CHAMBERS, P.A-C's credentials?
THOMAS CHAMBERS, P.A-C's NPI is 1407878234 with credentials P.A-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

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