2026 NPPES data Psychiatry Physician NPI 1285623637 MD
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KATHRYN MUZINA, MD

Psychiatry Physician in WILLOUGHBY HILLS, 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
714
Medicare Part D claims · 108 beneficiaries · Psychiatry Physician avg: 1K
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

KATHRYN MUZINA, MD filed 714 Medicare Part D claims in 2023 as a Psychiatry Physician in WILLOUGHBY HILLS, Ohio, prescribing 93% generic.

714
Part D claims, 2023
93%
generic prescribing

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.

KATHRYN MUZINA, MD's Medicare Part D volume vs every U.S. prescriber

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

714 Top 29% higher than 71% 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%). This entry sits in this band. 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

Board-eligible specialty (heuristic — not verified)

KATHRYN MUZINA, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about KATHRYN MUZINA, MD?

Quality data not reported

NPI registry status

Active

Issued 10/18/2005

NPI 1285623637

Primary specialty

Psychiatry Physician

High-volume

53,104 US NPIs in this specialty

Medicare Part D claims

714 31% vs specialty avg

2023 prescription claims

Specialty avg: 1,038

Specialty distribution in Ohio

How Psychiatry Physician compares to other specialties among Ohio providers

Ohio providers

Psychiatry Physician share within Ohio

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

Specialty board-certification context

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

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

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

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

KATHRYN MUZINA, MD appears in the CMS NPPES registry as a Psychiatry Physician provider holding MD credentials at 2785 SOM CENTER RD, WILLOUGHBY HILLS, OH, 44094, with a listed phone of (440) 602-8601. NPI 1285623637 was issued on 10/18/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MUZINA 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 714 prescription claims written by this provider, covering 108 Medicare beneficiaries and totaling roughly $89K in drug spend, split 7% brand-name and 93% 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.

Psychiatry Physician is a high-volume specialty nationwide, with 53,104 enrolled providers across 56 states and an average of 1,038 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

2785 SOM CENTER RD
WILLOUGHBY HILLS, OH 44094

Provider Details

NPI 1285623637
Specialty Psychiatry Physician
Credentials MD
Gender Female
NPI Issued 10/18/2005

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 KATHRYN MUZINA, MD. To verify KATHRYN MUZINA, MD'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.

Brand vs generic prescribing mix · Generic-heavy

KATHRYN MUZINA, MD — brand share 7.0%
Specialty average (est.)

7% brand-name claims vs 93% generic, on 714 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.

714
Total Claims
$89K
Total Drug Cost
108
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,363
Total Day Supply
40,758
Brand vs Generic
7% brand / 93% generic
Brand Drug Cost
$59K
Generic Drug Cost
$31K

Patient Demographics

Average Patient Age
65.7 years
Avg HCC Risk Score
1.31
Gender Split
81% female / 19% male
Age Distribution
<65: 36, 65-74: 54, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

What KATHRYN MUZINA, MD 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
Venlafaxine Hcl Er
Venlafaxine Hcl
93
Alprazolam
72
Bupropion Xl
Bupropion Hcl
64
Duloxetine Hcl
40
Lamotrigine
39
Quetiapine Fumarate
39
Clonazepam
33
Trazodone Hcl
29
Gabapentin
18
Aripiprazole
17

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

Psychiatry Physician Overview

How KATHRYN MUZINA, MD fits within the Psychiatry Physician landscape nationally.

53,104
Psychiatry Physician Providers in US
56
States with Psychiatry Physician
1,038
Avg Claims per Provider

KATHRYN MUZINA, MD's 714 claims are below the specialty average of 1,038.

Nearby Psychiatry Physician Providers in Ohio

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

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

Frequently Asked Questions

What is KATHRYN MUZINA, MD's specialty?
KATHRYN MUZINA, MD specializes in Psychiatry Physician and practices in WILLOUGHBY HILLS, Ohio. Credentials: MD.
How much does KATHRYN MUZINA, MD prescribe under Medicare Part D?
In 2023, KATHRYN MUZINA, MD wrote 714 Medicare Part D claims totaling $89K in drug costs for 108 beneficiaries.
Where is KATHRYN MUZINA, MD located?
KATHRYN MUZINA, MD is located at 2785 SOM CENTER RD, WILLOUGHBY HILLS, OH, 44094. Phone: (440) 602-8601.
What is KATHRYN MUZINA, MD's NPI number?
KATHRYN MUZINA, MD's National Provider Identifier (NPI) is 1285623637, issued on 10/18/2005.
Does KATHRYN MUZINA, MD prescribe more brand-name or generic drugs?
KATHRYN MUZINA, MD's prescribing is 7% brand-name and 93% generic drugs by claim count, with $59K in brand drug costs.
How many Psychiatry Physician providers are there in the US?
There are 53,104 Psychiatry Physician providers across 56 states in the US. The average Psychiatry Physician provider writes 1,038 Medicare Part D claims per year.
What drugs does KATHRYN MUZINA, MD prescribe most often?
Based on 2023 Medicare Part D data, KATHRYN MUZINA, MD's most frequently prescribed drugs include Venlafaxine Hcl Er, Alprazolam, Bupropion Xl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KATHRYN MUZINA, MD accept Medicare?
KATHRYN MUZINA, MD appears in CMS Medicare data with 714 Part D claims and 108 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KATHRYN MUZINA, MD's credentials?
KATHRYN MUZINA, MD's NPI is 1285623637 with credentials MD. 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