2026 NPPES data Neurology Physician NPI 1366803454 DO
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ROSEMARIE WALCH, DO

Neurology Physician in OWOSSO, Michigan. 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
933
Medicare Part D claims · 200 beneficiaries · Neurology Physician avg: 1K
Generic prescribing
80%
generic claims · 20% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$134.2K
174 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

ROSEMARIE WALCH, DO filed 933 Medicare Part D claims in 2023 as a Neurology Physician in OWOSSO, Michigan, prescribing 80% generic.

933
Part D claims, 2023
80%
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.

ROSEMARIE WALCH, DO's Medicare Part D volume vs every U.S. prescriber

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

933 Top 25% higher than 75% 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%). This entry sits in this band. 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 certification likely (heuristic — not verified)

ROSEMARIE WALCH, DO practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — 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 ROSEMARIE WALCH, DO?

Quality data not reported

NPI registry status

Active

Issued 03/16/2016

NPI 1366803454

Primary specialty

Neurology Physician

Mid-sized

19,866 US NPIs in this specialty

Medicare Part D claims

933 29% vs specialty avg

2023 prescription claims

Specialty avg: 1,309

Specialty distribution in Michigan

How Neurology Physician compares to other specialties among Michigan providers

Michigan providers

Neurology Physician share within Michigan

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

Specialty board-certification context

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

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

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

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

ROSEMARIE WALCH, DO appears in the CMS NPPES registry as a Neurology Physician provider holding DO credentials at 819 N SHIAWASSEE ST STE 110, OWOSSO, MI, 48867, with a listed phone of (989) 723-1390. NPI 1366803454 was issued on 03/16/2016. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what WALCH 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 933 prescription claims written by this provider, covering 200 Medicare beneficiaries and totaling roughly $1.5 million in drug spend, split 20% brand-name and 80% generic by claim count, with an opioid prescribing rate of 1.3%. 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.

Neurology Physician is a mid-sized specialty nationwide, with 19,866 enrolled providers across 54 states and an average of 1,309 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

819 N SHIAWASSEE ST STE 110
OWOSSO, MI 48867

Provider Details

NPI 1366803454
Specialty Neurology Physician
Credentials DO
Gender Female
NPI Issued 03/16/2016

Hospital and facility affiliations

Facilities where ROSEMARIE WALCH, DO 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.

MEMORIAL HOSPITAL
OWOSSO, MI

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 ROSEMARIE WALCH, DO. Source: openpaymentsdata.cms.gov.

Total received

$134.2K

Largest payer

Alexion Pharmaceuticals, 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.

License & disciplinary context — Michigan MI-BOM 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 ~41K Michigan medical licensees in 2023 — they are NOT specific to ROSEMARIE WALCH, DO. To verify ROSEMARIE WALCH, DO's current license status, search the MI-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

123
Total board actions, Michigan 2023
Across 120 cases
3.00
Actions per 1,000 licensees
Michigan statewide rate
probation
Most common action type
44 cases

MI-BOM 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 Michigan disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

ROSEMARIE WALCH, DO — brand share 20.0%
Specialty average (est.)

20% brand-name claims vs 80% generic, on 933 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.

933
Total Claims
$1.5M
Total Drug Cost
200
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,412
Total Day Supply
40,327
Brand vs Generic
20% brand / 80% generic
Brand Drug Cost
$1.4M
Generic Drug Cost
$90K
Opioid Claims
12 (1.3% rate)

Patient Demographics

Average Patient Age
64.0 years
Avg HCC Risk Score
1.52
Gender Split
78% female / 23% male
Age Distribution
<65: 90, 65-74: 77, 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 ROSEMARIE WALCH, DO 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
Baclofen
88
Gabapentin
54
Pregabalin
39
Lamotrigine
32
Octagam
Immun Globg(Igg)/Malt/Iga Ov50
27
Dalfampridine Er
Dalfampridine
25
Divalproex Sodium
24
Nurtec Odt
Rimegepant Sulfate
24
Modafinil
22
Zonisamide
22

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

Neurology Physician Overview

How ROSEMARIE WALCH, DO fits within the Neurology Physician landscape nationally.

19,866
Neurology Physician Providers in US
54
States with Neurology Physician
1,309
Avg Claims per Provider

ROSEMARIE WALCH, DO's 933 claims are below the specialty average of 1,309.

Nearby Neurology Physician Providers in Michigan

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

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

Frequently Asked Questions

What is ROSEMARIE WALCH, DO's specialty?
ROSEMARIE WALCH, DO specializes in Neurology Physician and practices in OWOSSO, Michigan. Credentials: DO.
How much does ROSEMARIE WALCH, DO prescribe under Medicare Part D?
In 2023, ROSEMARIE WALCH, DO wrote 933 Medicare Part D claims totaling $1.5M in drug costs for 200 beneficiaries.
Where is ROSEMARIE WALCH, DO located?
ROSEMARIE WALCH, DO is located at 819 N SHIAWASSEE ST STE 110, OWOSSO, MI, 48867. Phone: (989) 723-1390.
What is ROSEMARIE WALCH, DO's NPI number?
ROSEMARIE WALCH, DO's National Provider Identifier (NPI) is 1366803454, issued on 03/16/2016.
Does ROSEMARIE WALCH, DO prescribe more brand-name or generic drugs?
ROSEMARIE WALCH, DO's prescribing is 20% brand-name and 80% generic drugs by claim count, with $1.4M in brand drug costs.
Does ROSEMARIE WALCH, DO prescribe opioids?
Yes, ROSEMARIE WALCH, DO had 12 opioid claims in 2023 with an opioid prescribing rate of 1.3%.
How many Neurology Physician providers are there in the US?
There are 19,866 Neurology Physician providers across 54 states in the US. The average Neurology Physician provider writes 1,309 Medicare Part D claims per year.
What drugs does ROSEMARIE WALCH, DO prescribe most often?
Based on 2023 Medicare Part D data, ROSEMARIE WALCH, DO's most frequently prescribed drugs include Baclofen, Gabapentin, Pregabalin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ROSEMARIE WALCH, DO accept Medicare?
ROSEMARIE WALCH, DO appears in CMS Medicare data with 933 Part D claims and 200 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ROSEMARIE WALCH, DO's credentials?
ROSEMARIE WALCH, DO's NPI is 1366803454 with credentials DO. 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