2026 NPPES data Hospitalist Physician NPI 1205109675 D.O.
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CHRISTOPHER BOYER, D.O.

Hospitalist Physician in COLUMBIA, 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
644
Medicare Part D claims · 234 beneficiaries · Hospitalist Physician avg: 888
What the federal data reveals: CHRISTOPHER BOYER, D.O. is a Hospitalist Physician ([object Object]) practicing in COLUMBIA, Missouri with a Medicare Part D prescribing footprint of 644 claims across 234 beneficiaries .

What stands out: CHRISTOPHER BOYER, D.O. filed 644 Medicare Part D claims in 2023 across COLUMBIA, Missouri. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

CHRISTOPHER BOYER, D.O. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

CHRISTOPHER BOYER, D.O. at a glance

Quality data not reported

NPI registry status

Active

Issued 02/16/2012

NPI 1205109675

Primary specialty

Hospitalist Physician

Mid-sized

16,825 US NPIs in this specialty

Medicare Part D claims

644 27% vs specialty avg

2023 prescription claims

Specialty avg: 888

Specialty distribution in Missouri

How Hospitalist Physician compares to other specialties among Missouri providers

Missouri providers

Hospitalist Physician share within Missouri

1. Hospitalist Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Hospitalist Physician share within Missouri

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Hospitalist Physician) — 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 BOYER, D.O. is a Hospitalist Physician provider practicing in COLUMBIA, Missouri, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: D.O.. NPI: 1205109675. 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.

CHRISTOPHER BOYER, D.O. appears in the CMS NPPES registry as a Hospitalist Physician provider holding D.O. credentials at ONE HOSPITAL DR, COLUMBIA, MO, 65212, with a listed phone of (573) 884-9066. NPI 1205109675 was issued on 02/16/2012. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BOYER 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 644 prescription claims written by this provider, covering 234 Medicare beneficiaries and totaling roughly $55K in drug spend, with an opioid prescribing rate of 8.1%. 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.

Hospitalist Physician is a mid-sized specialty nationwide, with 16,825 enrolled providers across 54 states and an average of 888 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

ONE HOSPITAL DR
COLUMBIA, MO 65212

Provider Details

NPI 1205109675
Specialty Hospitalist Physician
Credentials D.O.
Gender Male
NPI Issued 02/16/2012

Hospital and facility affiliations

Facilities where CHRISTOPHER BOYER, D.O. 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.

MERCY CLINIC ADULT HOSPITALISTS - ST. LOUIS, LLC
SAINT LOUIS, MO
ST ANTHONYS PHYSICIAN ORGANIZATION HOSPITALIST SERVICES LC
SAINT LOUIS, 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).

Medicare Part D Prescribing Data

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

644
Total Claims
$55K
Total Drug Cost
234
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
700
Total Day Supply
14,593
Generic Drug Cost
$9K
Opioid Claims
52 (8.1% rate)
Antibiotic Claims
98

Patient Demographics

Average Patient Age
71.9 years
Avg HCC Risk Score
2.48
Gender Split
57% female / 43% male
Age Distribution
<65: 47, 65-74: 86, 75-84: 73, 85+: 28

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
30
Atorvastatin Calcium
26
Tamsulosin Hcl
25
Ciprofloxacin Hcl
24
Torsemide
22
Entresto
Sacubitril/Valsartan
20
Prednisone
18
Famotidine
16
Metoprolol Succinate
16
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
15

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

Hospitalist Physician Overview

How CHRISTOPHER BOYER, D.O. fits within the Hospitalist Physician landscape nationally.

16,825
Hospitalist Physician Providers in US
54
States with Hospitalist Physician
888
Avg Claims per Provider

CHRISTOPHER BOYER, D.O.'s 644 claims are below the specialty average of 888.

Nearby Hospitalist Physician Providers in Missouri

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

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

Frequently Asked Questions

What is CHRISTOPHER BOYER, D.O.'s specialty?
CHRISTOPHER BOYER, D.O. specializes in Hospitalist Physician and practices in COLUMBIA, Missouri. Credentials: D.O..
How much does CHRISTOPHER BOYER, D.O. prescribe under Medicare Part D?
In 2023, CHRISTOPHER BOYER, D.O. wrote 644 Medicare Part D claims totaling $55K in drug costs for 234 beneficiaries.
Where is CHRISTOPHER BOYER, D.O. located?
CHRISTOPHER BOYER, D.O. is located at ONE HOSPITAL DR, COLUMBIA, MO, 65212. Phone: (573) 884-9066.
What is CHRISTOPHER BOYER, D.O.'s NPI number?
CHRISTOPHER BOYER, D.O.'s National Provider Identifier (NPI) is 1205109675, issued on 02/16/2012.
Does CHRISTOPHER BOYER, D.O. prescribe opioids?
Yes, CHRISTOPHER BOYER, D.O. had 52 opioid claims in 2023 with an opioid prescribing rate of 8.1%.
How many Hospitalist Physician providers are there in the US?
There are 16,825 Hospitalist Physician providers across 54 states in the US. The average Hospitalist Physician provider writes 888 Medicare Part D claims per year.
What drugs does CHRISTOPHER BOYER, D.O. prescribe most often?
Based on 2023 Medicare Part D data, CHRISTOPHER BOYER, D.O.'s most frequently prescribed drugs include Hydrocodone-Acetaminophen, Atorvastatin Calcium, Tamsulosin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CHRISTOPHER BOYER, D.O. accept Medicare?
CHRISTOPHER BOYER, D.O. appears in CMS Medicare data with 644 Part D claims and 234 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CHRISTOPHER BOYER, D.O.'s credentials?
CHRISTOPHER BOYER, D.O.'s NPI is 1205109675 with credentials D.O.. 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