2026 NPPES data Clinical & Laboratory Immunology (Allergy & Immunology) Physician NPI 1497218796 MD
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ROSEMARY BAILEY, MD

Clinical & Laboratory Immunology (Allergy & Immunology) Physician in MADISON, Wisconsin. 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
78
Medicare Part D claims · 15 beneficiaries · Clinical & Laboratory Immunology (Allergy & Immunology) Physician avg: 701
Generic prescribing
81%
generic claims · 19% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

ROSEMARY BAILEY, MD filed 78 Medicare Part D claims in 2023 as a Clinical & Laboratory Immunology (Allergy & Immunology) Physician in MADISON, Wisconsin, prescribing 81% generic.

78
Part D claims, 2023
81%
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.

ROSEMARY BAILEY, MD's Medicare Part D volume vs every U.S. prescriber

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

78 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 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

Board certification likely (heuristic — not verified)

ROSEMARY BAILEY, MD 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 ROSEMARY BAILEY, MD?

Quality data not reported

NPI registry status

Active

Issued 04/12/2019

NPI 1497218796

Primary specialty

Clinical & Laboratory Immunology (Allergy & Immunology) Physician

Rare

97 US NPIs in this specialty

Medicare Part D claims

78 89% vs specialty avg

2023 prescription claims

Specialty avg: 701

Specialty distribution in Wisconsin

How Clinical & Laboratory Immunology (Allergy & Immunology) Physician compares to other specialties among Wisconsin providers

Wisconsin providers

Clinical & Laboratory Immunology (Allergy & Immunology) Physician share within Wisconsin

1. Clinical & Laboratory Immunology (Allergy & Immunology) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Clinical & Laboratory Immunology (Allergy & Immunology) Physician share within Wisconsin

Specialty board-certification context

Estimated specialty board-certified rate — Clinical & Laboratory Immunology (Allergy & Immunology) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Clinical & Laboratory Immunology (Allergy & Immunology) Physician ABMS/AOA estimate

Est. board-certified rate (Clinical & Laboratory Immunology (Allergy & Immunology) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Clinical & Laboratory Immunology (Allergy & Immunology) 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).

ROSEMARY BAILEY, MD appears in the CMS NPPES registry as a Clinical & Laboratory Immunology (Allergy & Immunology) Physician provider holding MD credentials at 303 N HAMILTON ST APT 219, MADISON, WI, 53703, with a listed phone of (339) 927-7668. NPI 1497218796 was issued on 04/12/2019. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BAILEY 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 78 prescription claims written by this provider, covering 15 Medicare beneficiaries and totaling roughly $41K in drug spend, split 19% brand-name and 81% 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.

Clinical & Laboratory Immunology (Allergy & Immunology) Physician is a narrow specialty nationwide, with 97 enrolled providers across 29 states and an average of 701 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

303 N HAMILTON ST APT 219
MADISON, WI 53703

Provider Details

NPI 1497218796
Specialty Clinical & Laboratory Immunology (Allergy & Immunology) Physician
Credentials MD
Gender Female
NPI Issued 04/12/2019

Hospital and facility affiliations

Facilities where ROSEMARY BAILEY, MD 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.

NORTH SHORE-LIJ MEDICAL PC
NEW HYDE PARK, NY

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

Brand vs generic prescribing mix · Typical

ROSEMARY BAILEY, MD — brand share 19.0%
Specialty average (est.)

19% brand-name claims vs 81% generic, on 78 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.

78
Total Claims
$41K
Total Drug Cost
15
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
96
Total Day Supply
2,523
Brand vs Generic
19% brand / 81% generic
Brand Drug Cost
$37K
Generic Drug Cost
$4K

Patient Demographics

Average Patient Age
64.3 years
Avg HCC Risk Score
1.47

Clinical & Laboratory Immunology (Allergy & Immunology) Physician Overview

How ROSEMARY BAILEY, MD fits within the Clinical & Laboratory Immunology (Allergy & Immunology) Physician landscape nationally.

97
Clinical & Laboratory Immunology (Allergy & Immunology) Physician Providers in US
29
States with Clinical & Laboratory Immunology (Allergy & Immunology) Physician
701
Avg Claims per Provider

ROSEMARY BAILEY, MD's 78 claims are below the specialty average of 701.

Nearby Clinical & Laboratory Immunology (Allergy & Immunology) Physician Providers in Wisconsin

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

Compare Clinical & Laboratory Immunology (Allergy & Immunology) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ROSEMARY BAILEY, MD's specialty?
ROSEMARY BAILEY, MD specializes in Clinical & Laboratory Immunology (Allergy & Immunology) Physician and practices in MADISON, Wisconsin. Credentials: MD.
How much does ROSEMARY BAILEY, MD prescribe under Medicare Part D?
In 2023, ROSEMARY BAILEY, MD wrote 78 Medicare Part D claims totaling $41K in drug costs for 15 beneficiaries.
Where is ROSEMARY BAILEY, MD located?
ROSEMARY BAILEY, MD is located at 303 N HAMILTON ST APT 219, MADISON, WI, 53703. Phone: (339) 927-7668.
What is ROSEMARY BAILEY, MD's NPI number?
ROSEMARY BAILEY, MD's National Provider Identifier (NPI) is 1497218796, issued on 04/12/2019.
Does ROSEMARY BAILEY, MD prescribe more brand-name or generic drugs?
ROSEMARY BAILEY, MD's prescribing is 19% brand-name and 81% generic drugs by claim count, with $37K in brand drug costs.
How many Clinical & Laboratory Immunology (Allergy & Immunology) Physician providers are there in the US?
There are 97 Clinical & Laboratory Immunology (Allergy & Immunology) Physician providers across 29 states in the US. The average Clinical & Laboratory Immunology (Allergy & Immunology) Physician provider writes 701 Medicare Part D claims per year.
Does ROSEMARY BAILEY, MD accept Medicare?
ROSEMARY BAILEY, MD appears in CMS Medicare data with 78 Part D claims and 15 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ROSEMARY BAILEY, MD's credentials?
ROSEMARY BAILEY, MD's NPI is 1497218796 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