2026 NPPES data Obstetrics Physician NPI 1538458773 D.O.
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CHRISTINA SULLIVAN, D.O.

Obstetrics Physician in MOUNT PLEASANT, 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
150
Medicare Part D claims · 50 beneficiaries · Obstetrics Physician avg: 319
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
82.3961/100
▼ 1 pts below national avg 83.1 · [object Object]
What the federal data reveals: CHRISTINA SULLIVAN, D.O. is a Obstetrics Physician ([object Object]) practicing in MOUNT PLEASANT, Wisconsin with a Medicare Part D prescribing footprint of 150 claims across 50 beneficiaries — 15% brand-name prescribing . Their CMS MIPS Final Score of 82.3961/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: CHRISTINA SULLIVAN, D.O. reported a CMS MIPS final score of 82.3961 out of 100, below the 83.1 national average, and filed 150 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

CHRISTINA SULLIVAN, D.O. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

CHRISTINA SULLIVAN, D.O. at a glance

Near national average

NPI registry status

Active

Issued 03/28/2011

NPI 1538458773

Primary specialty

Obstetrics Physician

Niche

1,402 US NPIs in this specialty

Medicare Part D claims

150 53% vs specialty avg

2023 prescription claims

Specialty avg: 319

MIPS final score

82.3961/100 0.7038999999999902% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Wisconsin

How Obstetrics Physician compares to other specialties among Wisconsin providers

Wisconsin providers

Obstetrics Physician share within Wisconsin

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

Medicare quality performance — MIPS

CHRISTINA SULLIVAN, D.O.'s 2023 MIPS final score plotted against the Obstetrics Physician national average

Near national average
MIPS Final Score
82.3961/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Obstetrics Physician) — 82.3961/100 vs national avg 83.1

0%100%National avg83%82.4%
MIPS final score (Obstetrics Physician) — 82.3961/100 vs national avg 83.1

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).

CHRISTINA SULLIVAN, D.O. is a Obstetrics Physician provider practicing in MOUNT PLEASANT, Wisconsin, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: D.O.. NPI: 1538458773. 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.

CHRISTINA SULLIVAN, D.O. appears in the CMS NPPES registry as a Obstetrics Physician provider holding D.O. credentials at 3821 SPRING ST, MOUNT PLEASANT, WI, 53405, with a listed phone of (262) 687-8460. NPI 1538458773 was issued on 03/28/2011. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SULLIVAN 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 150 prescription claims written by this provider, covering 50 Medicare beneficiaries and totaling roughly $10K in drug spend, split 15% brand-name and 85% 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 82.3961/100 for the 2023 performance year (Quality 77.8816, Cost 74.3833), compared with the national average of 83.1.

Obstetrics Physician is a narrow specialty nationwide, with 1,402 enrolled providers across 54 states and an average of 319 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

3821 SPRING ST
MOUNT PLEASANT, WI 53405

Provider Details

NPI 1538458773
Specialty Obstetrics Physician
Credentials D.O.
Gender Female
NPI Issued 03/28/2011

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

82.3961
Final Score
Avg: 83.1
77.8816
Quality
74.3833
Cost
81
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where CHRISTINA SULLIVAN, D.O. 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.

ASCENSION MEDICAL GROUP-SOUTHEAST WISCONSIN INC
MOUNT PLEASANT, WI

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

CHRISTINA SULLIVAN, D.O. — brand share 15.0%
Specialty average (est.)

15% brand-name claims vs 85% generic, on 150 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.

150
Total Claims
$10K
Total Drug Cost
50
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
234
Total Day Supply
5,863
Brand vs Generic
15% brand / 85% generic
Brand Drug Cost
$5K
Generic Drug Cost
$6K

Patient Demographics

Average Patient Age
60.8 years
Avg HCC Risk Score
1.06
Age Distribution
<65: 21, 65-74: 20, 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.

Drug Claims
Estradiol
21
Nystatin
18
Triamcinolone Acetonide
13
Estarylla
Norgestimate-Ethinyl Estradiol
12
Junel Fe 24
Norethindrone-E.Estradiol-Iron
11
Premarin
"Estrogens
N/A

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

Obstetrics Physician Overview

How CHRISTINA SULLIVAN, D.O. fits within the Obstetrics Physician landscape nationally.

1,402
Obstetrics Physician Providers in US
54
States with Obstetrics Physician
319
Avg Claims per Provider

CHRISTINA SULLIVAN, D.O.'s 150 claims are below the specialty average of 319.

Nearby Obstetrics Physician Providers in Wisconsin

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

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

Frequently Asked Questions

What is CHRISTINA SULLIVAN, D.O.'s specialty?
CHRISTINA SULLIVAN, D.O. specializes in Obstetrics Physician and practices in MOUNT PLEASANT, Wisconsin. Credentials: D.O..
How much does CHRISTINA SULLIVAN, D.O. prescribe under Medicare Part D?
In 2023, CHRISTINA SULLIVAN, D.O. wrote 150 Medicare Part D claims totaling $10K in drug costs for 50 beneficiaries.
What is CHRISTINA SULLIVAN, D.O.'s Medicare quality score?
CHRISTINA SULLIVAN, D.O. has a CMS MIPS Final Score of 82.3961/100 (Quality: 77.8816, Cost: 74.3833). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is CHRISTINA SULLIVAN, D.O. located?
CHRISTINA SULLIVAN, D.O. is located at 3821 SPRING ST, MOUNT PLEASANT, WI, 53405. Phone: (262) 687-8460.
What is CHRISTINA SULLIVAN, D.O.'s NPI number?
CHRISTINA SULLIVAN, D.O.'s National Provider Identifier (NPI) is 1538458773, issued on 03/28/2011.
Does CHRISTINA SULLIVAN, D.O. prescribe more brand-name or generic drugs?
CHRISTINA SULLIVAN, D.O.'s prescribing is 15% brand-name and 85% generic drugs by claim count, with $5K in brand drug costs.
How many Obstetrics Physician providers are there in the US?
There are 1,402 Obstetrics Physician providers across 54 states in the US. The average Obstetrics Physician provider writes 319 Medicare Part D claims per year.
What drugs does CHRISTINA SULLIVAN, D.O. prescribe most often?
Based on 2023 Medicare Part D data, CHRISTINA SULLIVAN, D.O.'s most frequently prescribed drugs include Estradiol, Nystatin, Triamcinolone Acetonide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CHRISTINA SULLIVAN, D.O. accept Medicare?
CHRISTINA SULLIVAN, D.O. appears in CMS Medicare data with 150 Part D claims and 50 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CHRISTINA SULLIVAN, D.O.'s credentials?
CHRISTINA SULLIVAN, D.O.'s NPI is 1538458773 with credentials D.O.. 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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