2026 NPPES data Independent Duty Corpsman NPI 1558565929
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KENNETH MAZER

Independent Duty Corpsman in RAVENNA, Ohio. 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
208
Medicare Part D claims · 157 beneficiaries · Independent Duty Corpsman avg: 200

What the federal data shows

KENNETH MAZER filed 208 Medicare Part D claims in 2023 as a Independent Duty Corpsman in RAVENNA, Ohio.

208
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.

KENNETH MAZER's Medicare Part D volume vs every U.S. prescriber

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

208 49th percentile higher than 49% 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 KENNETH MAZER?

Quality data not reported

NPI registry status

Active

Issued 06/12/2007

NPI 1558565929

Primary specialty

Independent Duty Corpsman

Niche

2,978 US NPIs in this specialty

Medicare Part D claims

208 4% vs specialty avg

2023 prescription claims

Specialty avg: 200

Specialty distribution in Ohio

How Independent Duty Corpsman compares to other specialties among Ohio providers

Ohio providers

Independent Duty Corpsman share within Ohio

1. Independent Duty Corpsman42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Independent Duty Corpsman share within Ohio

Specialty board-certification context

Estimated specialty board-certified rate — Independent Duty Corpsman (ABMS / AOA reference)

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

Est. board-certified rate (Independent Duty Corpsman) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Independent Duty Corpsman) — 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).

KENNETH MAZER is a Independent Duty Corpsman provider practicing in RAVENNA, Ohio, according to the CMS National Plan and Provider Enumeration System (NPPES). NPI: 1558565929. 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.

KENNETH MAZER appears in the CMS NPPES registry as a Independent Duty Corpsman provider at 6847 N CHESTNUT ST, RAVENNA, OH, 44266, with a listed phone of (330) 493-4443. NPI 1558565929 was issued on 06/12/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MAZER 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 208 prescription claims written by this provider, covering 157 Medicare beneficiaries and totaling roughly $3K in drug spend, with an opioid prescribing rate of 14.4%. 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.

Independent Duty Corpsman is a narrow specialty nationwide, with 2,978 enrolled providers across 45 states and an average of 200 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

6847 N CHESTNUT ST
RAVENNA, OH 44266

Provider Details

NPI 1558565929
Specialty Independent Duty Corpsman
Gender Male
NPI Issued 06/12/2007

License & disciplinary context — Ohio OMB 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~48K Ohio medical licensees in 2023 — they are NOT specific to KENNETH MAZER. To verify KENNETH MAZER's current license status, search the OMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

158
Total board actions, Ohio 2023
Across 154 cases
3.29
Actions per 1,000 licensees
Ohio statewide rate
probation
Most common action type
56 cases

OMB publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Ohio disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Medicare Part D Prescribing Data

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

208
Total Claims
$3K
Total Drug Cost
157
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
209
Total Day Supply
1,559
Generic Drug Cost
$1K
Opioid Claims
30 (14.4% rate)
Antibiotic Claims
80

Patient Demographics

Average Patient Age
71.1 years
Avg HCC Risk Score
1.46
Gender Split
66% female / 34% male
Age Distribution
<65: 34, 65-74: 71, 75-84: 37, 85+: 15

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Prednisone
35
Cephalexin
32
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
23
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
20
Doxycycline Hyclate
12

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

Independent Duty Corpsman Overview

How KENNETH MAZER fits within the Independent Duty Corpsman landscape nationally.

2,978
Independent Duty Corpsman Providers in US
45
States with Independent Duty Corpsman
200
Avg Claims per Provider

KENNETH MAZER's 208 claims are above the specialty average of 200.

Nearby Independent Duty Corpsman Providers in Ohio

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

Compare Independent Duty Corpsman nationally: see state-by-state distribution →

Frequently Asked Questions

What is KENNETH MAZER's specialty?
KENNETH MAZER specializes in Independent Duty Corpsman and practices in RAVENNA, Ohio.
How much does KENNETH MAZER prescribe under Medicare Part D?
In 2023, KENNETH MAZER wrote 208 Medicare Part D claims totaling $3K in drug costs for 157 beneficiaries.
Where is KENNETH MAZER located?
KENNETH MAZER is located at 6847 N CHESTNUT ST, RAVENNA, OH, 44266. Phone: (330) 493-4443.
What is KENNETH MAZER's NPI number?
KENNETH MAZER's National Provider Identifier (NPI) is 1558565929, issued on 06/12/2007.
Does KENNETH MAZER prescribe opioids?
Yes, KENNETH MAZER had 30 opioid claims in 2023 with an opioid prescribing rate of 14.4%.
How many Independent Duty Corpsman providers are there in the US?
There are 2,978 Independent Duty Corpsman providers across 45 states in the US. The average Independent Duty Corpsman provider writes 200 Medicare Part D claims per year.
What drugs does KENNETH MAZER prescribe most often?
Based on 2023 Medicare Part D data, KENNETH MAZER's most frequently prescribed drugs include Prednisone, Cephalexin, Oxycodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KENNETH MAZER accept Medicare?
KENNETH MAZER appears in CMS Medicare data with 208 Part D claims and 157 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KENNETH MAZER's credentials?
KENNETH MAZER's NPI is 1558565929. 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