2026 NPPES data Periodontics NPI 1164609384 DDS, MS
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TRUMAN JOHNSON, DDS, MS

Periodontics in CEDAR RAPIDS, 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
108
Medicare Part D claims · 46 beneficiaries · Periodontics avg: 264
What the federal data reveals: TRUMAN JOHNSON, DDS, MS is a Periodontics ([object Object]) practicing in CEDAR RAPIDS, Iowa with a Medicare Part D prescribing footprint of 108 claims across 46 beneficiaries .

What stands out: TRUMAN JOHNSON, DDS, MS filed 108 Medicare Part D claims in 2023 across CEDAR RAPIDS, Iowa. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

TRUMAN JOHNSON, DDS, MS at a glance

Quality data not reported

NPI registry status

Active

Issued 01/30/2008

NPI 1164609384

Primary specialty

Periodontics

Mid-sized

6,061 US NPIs in this specialty

Medicare Part D claims

108 59% vs specialty avg

2023 prescription claims

Specialty avg: 264

Specialty distribution in Iowa

How Periodontics compares to other specialties among Iowa providers

Iowa providers

Periodontics share within Iowa

1. Periodontics42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Periodontics share within Iowa

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Periodontics) — 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).

TRUMAN JOHNSON, DDS, MS is a Periodontics provider practicing in CEDAR RAPIDS, Iowa, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: DDS, MS. NPI: 1164609384. 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.

TRUMAN JOHNSON, DDS, MS appears in the CMS NPPES registry as a Periodontics provider holding DDS, MS credentials at 3900 RIVER RIDGE DRIVE NE, CEDAR RAPIDS, IA, 52402, with a listed phone of (319) 363-9880. NPI 1164609384 was issued on 01/30/2008. 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 108 prescription claims written by this provider, covering 46 Medicare beneficiaries and totaling roughly $611 in drug spend. 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.

Periodontics is a mid-sized specialty nationwide, with 6,061 enrolled providers across 53 states and an average of 264 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

3900 RIVER RIDGE DRIVE NE
CEDAR RAPIDS, IA 52402

Provider Details

NPI 1164609384
Specialty Periodontics
Credentials DDS, MS
Gender Male
NPI Issued 01/30/2008

Medicare Part D Prescribing Data

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

108
Total Claims
$611
Total Drug Cost
46
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
110
Total Day Supply
1,120
Generic Drug Cost
$578
Antibiotic Claims
45

Patient Demographics

Average Patient Age
74.5 years
Avg HCC Risk Score
0.81
Gender Split
50% female / 50% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Amoxicillin
36
Chlorhexidine Gluconate
27
Etodolac
22

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

Periodontics Overview

How TRUMAN JOHNSON, DDS, MS fits within the Periodontics landscape nationally.

6,061
Periodontics Providers in US
53
States with Periodontics
264
Avg Claims per Provider

TRUMAN JOHNSON, DDS, MS's 108 claims are below the specialty average of 264.

Nearby Periodontics Providers in Iowa

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

Compare Periodontics nationally: see state-by-state distribution →

Frequently Asked Questions

What is TRUMAN JOHNSON, DDS, MS's specialty?
TRUMAN JOHNSON, DDS, MS specializes in Periodontics and practices in CEDAR RAPIDS, Iowa. Credentials: DDS, MS.
How much does TRUMAN JOHNSON, DDS, MS prescribe under Medicare Part D?
In 2023, TRUMAN JOHNSON, DDS, MS wrote 108 Medicare Part D claims totaling $611 in drug costs for 46 beneficiaries.
Where is TRUMAN JOHNSON, DDS, MS located?
TRUMAN JOHNSON, DDS, MS is located at 3900 RIVER RIDGE DRIVE NE, CEDAR RAPIDS, IA, 52402. Phone: (319) 363-9880.
What is TRUMAN JOHNSON, DDS, MS's NPI number?
TRUMAN JOHNSON, DDS, MS's National Provider Identifier (NPI) is 1164609384, issued on 01/30/2008.
How many Periodontics providers are there in the US?
There are 6,061 Periodontics providers across 53 states in the US. The average Periodontics provider writes 264 Medicare Part D claims per year.
What drugs does TRUMAN JOHNSON, DDS, MS prescribe most often?
Based on 2023 Medicare Part D data, TRUMAN JOHNSON, DDS, MS's most frequently prescribed drugs include Amoxicillin, Chlorhexidine Gluconate, Etodolac. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does TRUMAN JOHNSON, DDS, MS accept Medicare?
TRUMAN JOHNSON, DDS, MS appears in CMS Medicare data with 108 Part D claims and 46 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify TRUMAN JOHNSON, DDS, MS's credentials?
TRUMAN JOHNSON, DDS, MS's NPI is 1164609384 with credentials DDS, MS. 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