2026 NPPES data Critical Care Medicine (Internal Medicine) Physician NPI 1134339989 D.O.
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BRYON JOHNSON, D.O.

Critical Care Medicine (Internal Medicine) Physician in DES MOINES, Iowa. 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
1K
Medicare Part D claims · 139 beneficiaries · Critical Care Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
44%
generic claims · 56% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$63.32
2 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

BRYON JOHNSON, D.O. filed 1,066 Medicare Part D claims in 2023 as a Critical Care Medicine (Internal Medicine) Physician in DES MOINES, Iowa, prescribing 44% generic.

1K
Part D claims, 2023
44%
generic prescribing
Likely
board-certified (heuristic)

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.

BRYON JOHNSON, D.O.'s Medicare Part D volume vs every U.S. prescriber

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

1,066 Top 24% higher than 76% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). This entry sits in this band. 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

Board certification likely (heuristic — not verified)

BRYON JOHNSON, 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).

What does the federal data show about BRYON JOHNSON, D.O.?

Quality data not reported

NPI registry status

Active

Issued 05/23/2007

NPI 1134339989

Primary specialty

Critical Care Medicine (Internal Medicine) Physician

Mid-sized

6,631 US NPIs in this specialty

Medicare Part D claims

1,066 0% vs specialty avg

2023 prescription claims

Specialty avg: 1,069

Specialty distribution in Iowa

How Critical Care Medicine (Internal Medicine) Physician compares to other specialties among Iowa providers

Iowa providers

Critical Care Medicine (Internal Medicine) Physician share within Iowa

1. Critical Care Medicine (Internal Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Critical Care Medicine (Internal Medicine) Physician share within Iowa

Specialty board-certification context

Estimated specialty board-certified rate — Critical Care Medicine (Internal Medicine) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Critical Care Medicine (Internal Medicine) Physician ABMS/AOA estimate

Est. board-certified rate (Critical Care Medicine (Internal Medicine) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Critical Care Medicine (Internal Medicine) 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).

BRYON JOHNSON, D.O. appears in the CMS NPPES registry as a Critical Care Medicine (Internal Medicine) Physician provider holding D.O. credentials at 411 LAUREL ST STE A120, DES MOINES, IA, 50314, with a listed phone of (515) 643-7900. NPI 1134339989 was issued on 05/23/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what JOHNSON 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 1,066 prescription claims written by this provider, covering 139 Medicare beneficiaries and totaling roughly $566K in drug spend, split 56% brand-name and 44% 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.

Critical Care Medicine (Internal Medicine) Physician is a mid-sized specialty nationwide, with 6,631 enrolled providers across 53 states and an average of 1,069 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

411 LAUREL ST STE A120
DES MOINES, IA 50314

Provider Details

NPI 1134339989
Specialty Critical Care Medicine (Internal Medicine) Physician
Credentials D.O.
Gender Male
NPI Issued 05/23/2007

Hospital and facility affiliations

Facilities where BRYON JOHNSON, 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.

MADISON COUNTY MEMORIAL HOSPITAL
WINTERSET, IA
MERCY CLINICS INC
DES MOINES, IA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for BRYON JOHNSON, D.O.. Source: openpaymentsdata.cms.gov.

Total received

$63

Largest payer

INTUITIVE SURGICAL, INC.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Brand-heavy

BRYON JOHNSON, D.O. — brand share 56.0%
Specialty average (est.)

56% brand-name claims vs 44% generic, on 1,066 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.

1,066
Total Claims
$566K
Total Drug Cost
139
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,291
Total Day Supply
33,075
Brand vs Generic
56% brand / 44% generic
Brand Drug Cost
$551K
Antibiotic Claims
130

Patient Demographics

Average Patient Age
72.7 years
Avg HCC Risk Score
1.75
Gender Split
53% female / 47% male
Age Distribution
<65: 16, 65-74: 64, 75-84: 44, 85+: 15

Top Prescribed Drugs (Medicare Part D)

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

What BRYON JOHNSON, D.O. 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
Prednisone
153
Trelegy Ellipta
Fluticasone/Umeclidin/Vilanter
106
Incruse Ellipta
Umeclidinium Bromide
71
Albuterol Sulfate Hfa
Albuterol Sulfate
63
Doxycycline Monohydrate
55
Fluticasone-Salmeterol
Fluticasone Propion/Salmeterol
47
Breo Ellipta
Fluticasone/Vilanterol
38
Spiriva Handihaler
Tiotropium Bromide
36
Symbicort
Budesonide/Formoterol Fumarate
36
Advair Diskus
Fluticasone Propion/Salmeterol
35

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

Critical Care Medicine (Internal Medicine) Physician Overview

How BRYON JOHNSON, D.O. fits within the Critical Care Medicine (Internal Medicine) Physician landscape nationally.

6,631
Critical Care Medicine (Internal Medicine) Physician Providers in US
53
States with Critical Care Medicine (Internal Medicine) Physician
1,069
Avg Claims per Provider

BRYON JOHNSON, D.O.'s 1,066 claims are below the specialty average of 1,069.

Nearby Critical Care Medicine (Internal Medicine) Physician Providers in Iowa

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

Compare Critical Care Medicine (Internal Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is BRYON JOHNSON, D.O.'s specialty?
BRYON JOHNSON, D.O. specializes in Critical Care Medicine (Internal Medicine) Physician and practices in DES MOINES, Iowa. Credentials: D.O..
How much does BRYON JOHNSON, D.O. prescribe under Medicare Part D?
In 2023, BRYON JOHNSON, D.O. wrote 1,066 Medicare Part D claims totaling $566K in drug costs for 139 beneficiaries.
Where is BRYON JOHNSON, D.O. located?
BRYON JOHNSON, D.O. is located at 411 LAUREL ST STE A120, DES MOINES, IA, 50314. Phone: (515) 643-7900.
What is BRYON JOHNSON, D.O.'s NPI number?
BRYON JOHNSON, D.O.'s National Provider Identifier (NPI) is 1134339989, issued on 05/23/2007.
Does BRYON JOHNSON, D.O. prescribe more brand-name or generic drugs?
BRYON JOHNSON, D.O.'s prescribing is 56% brand-name and 44% generic drugs by claim count, with $551K in brand drug costs.
How many Critical Care Medicine (Internal Medicine) Physician providers are there in the US?
There are 6,631 Critical Care Medicine (Internal Medicine) Physician providers across 53 states in the US. The average Critical Care Medicine (Internal Medicine) Physician provider writes 1,069 Medicare Part D claims per year.
What drugs does BRYON JOHNSON, D.O. prescribe most often?
Based on 2023 Medicare Part D data, BRYON JOHNSON, D.O.'s most frequently prescribed drugs include Prednisone, Trelegy Ellipta, Incruse Ellipta. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does BRYON JOHNSON, D.O. accept Medicare?
BRYON JOHNSON, D.O. appears in CMS Medicare data with 1,066 Part D claims and 139 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify BRYON JOHNSON, D.O.'s credentials?
BRYON JOHNSON, D.O.'s NPI is 1134339989 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