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2026 NPPES data Obstetrics & Gynecology Physician NPI 1366446130 M.D.
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Margaret Gustafson, M.D.

Obstetrics & Gynecology Physician in Ludington, Michigan.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 44,326 in Obstetrics & Gynecology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
75
Medicare Part D claims · 31 beneficiaries · Obstetrics & Gynecology Physician avg: 179
MIPS score
83.7/100
▲ 0 pts above national avg 83.5 · Above neutral
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Compiled from official public sources by the editorial process.

What the federal data shows

Margaret Gustafson, M.D. reported a CMS MIPS final score of 83.7/100 - above the 83.5 national average - and filed 75 Medicare Part D claims in 2023.

83.7/100
MIPS score · +0 vs avg
75
Part D claims, 2023
Likely
board-certified (heuristic)
≥39th
pct among measured MIPS (lower-bound band)

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.

CMS NPPES provider registry desk

NPI 1366446130 · Obstetrics & Gynecology Physician

NPI-10 · ENUM-LEGACY · TAX-MID · MIPS-INLINE · RX-TRACE · BOOK-LIGHT · PHOTO-FINISH

  • NPI-10 1366446130
  • ENUM-LEGACY 2005
  • TAX-MID 44K Obstetrics &
  • MIPS-INLINE 83.7/100
  • RX-TRACE 75
  • BOOK-LIGHT 1,681 in Michigan
  • PHOTO-FINISH Vinodha Nagesh · ±0.0

MIPS final-score neighbourhood

Same-specialty nationwide peers by CMS final score, not geographic proximity

MIPS pts

What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).

Source CMS Quality Payment Program (MIPS) As of 2023

Margaret Gustafson, M.D.'s MIPS score vs every measured U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.

84 ≥ 39th percentile 39% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). Below this entry. 10–20: 3,008 measured providers (1%). Below this entry. 20–30: 3,069 measured providers (1%). Below this entry. 30–40: 2,746 measured providers (1%). Below this entry. 40–50: 2,928 measured providers (1%). Below this entry. 50–60: 5,882 measured providers (1%). Below this entry. 60–70: 13,906 measured providers (3%). Below this entry. 70–80: 94,570 measured providers (21%). Below this entry. 80–90: 129,887 measured providers (29%). This entry sits in this band. 90+: 189,403 measured providers (42%). Above this entry. This provider 0 100 every measured MIPS clinician, bucketed by value

Each bar is a band; taller bars hold more measured providers. 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.

The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Where Margaret Gustafson, M.D. sits

This provider among obstetrics & gynecology physician peers

Across the 7,360 obstetrics & gynecology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Margaret Gustafson, M.D. writes more Part D claims than 39% of them and scores higher on MIPS quality than 38% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 5Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 75Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 3Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 67Margaret Gustafson, M.D., Part D claim volume, percentile in specialty: 39 · MIPS quality, percentile: 38
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one obstetrics & gynecology physician peer from a representative sample of 60; the gold marker is Margaret Gustafson, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

✓
Board certification likely (heuristic, not verified)

Margaret Gustafson, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Margaret Gustafson, M.D.?

Near national average

NPI registry status

Active

Issued 06/09/2005

NPI 1366446130

Primary specialty

Obstetrics & Gynecology Physician

Mid-sized

44,326 US NPIs in this specialty

Medicare Part D claims

75 58% vs specialty avg

2023 prescription claims

Specialty avg: 179

MIPS final score

83.7/100 0.2 pts vs avg

Above neutral band

vs 83.5 national avg

Specialty distribution in Michigan

How Obstetrics & Gynecology Physician compares to other specialties among Michigan providers

Michigan providers
Behavior Technician21.4%Clinical Social Worker5.8%Student in an Organized Heal…3.6%Physical Therapist3.4%Social Worker3.4%Pharmacist3%Obstetrics & Gynecology Phys…0.6%
Largest specialties in Michigan (% of in-state providers)

Medicare quality performance, MIPS

Margaret Gustafson, M.D.'s 2023 MIPS final score plotted against the Obstetrics & Gynecology Physician national average

Near national average
MIPS Final Score
83.7/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%83.7%
MIPS final score (Obstetrics & Gynecology Physician) - 83.7/100 vs national avg 83.5
How MIPS and board certification work

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).

Practice Address

7 ATKINSON DR STE 200
Ludington, MI 49431
(231) 843-6767

Provider Details

NPI 1366446130
Specialty Obstetrics & Gynecology Physician
Credentials M.D.
Gender Female
NPI Issued 06/09/2005

CMS Quality Score (MIPS)

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

83.7219
Final Score
Measured-score avg: 83.5
94.3459
Quality
51.3938
Cost
100
Promoting Interoperability

Reporting: Group practice

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 Margaret Gustafson, M.D.. To verify Margaret Gustafson, M.D.'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.

Medicare Part D Prescribing Data

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

75
Total Claims
$7K
Total Drug Cost
31
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
136
Total Day Supply
3,695
Generic Drug Cost
$2K

Patient Demographics

Average Patient Age
64.8 years
Avg HCC Risk Score
1.18
Gender Split
100% female / 0% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Clotrimazole-Betamethasone
Clotrimazole/Betamethasone Dip
17

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

More Obstetrics & Gynecology Physician in MI → All providers in Michigan → Compare specialties →

Obstetrics & Gynecology Physician Overview

How Margaret Gustafson, M.D. fits within the Obstetrics & Gynecology Physician landscape nationally.

44,326
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
179
Avg Claims per Provider

Margaret Gustafson, M.D.'s 75 claims are below the specialty average of 179.

Nationwide Obstetrics & Gynecology Physician peers with similar MIPS or enrollment year

Two federal-record peer sets for Gustafson, both outside Michigan so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (83.7 here).

Deborah Lachance 83.7 ND Vinodha Nagesh 83.7 IN Carolyn Haunschild 83.7 CA Sanaz Memarzadeh 83.7 CA

Same NPPES enumeration year (2005)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

Betty Nyein New York, NY Lisa Gibbons Vancouver, WA Christine Da Silva Daytona Beach, FL Thanh Danae Vu Lapwai, ID

Nearby Obstetrics & Gynecology Physician Providers in Michigan

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

One of 1,681 Obstetrics & Gynecology Physician providers enrolled in Michigan, 5 are shown here.

Dr. Bryan Aaron
MD
Ann Arbor, MI
Dr. Mushtak Abbou
MD
Royal Oak, MI
Dr. Youstina Abdallah
MD
Grand Rapids, MI
Dr. Adib Abdelrahman
D.O.
Pontiac, MI
Dr. Anan Abdelrahman
MD
Pontiac, MI

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

Frequently Asked Questions

What is Margaret Gustafson, M.D.'s specialty? ▼
Margaret Gustafson, M.D. specializes in Obstetrics & Gynecology Physician and practices in Ludington, Michigan. Credentials: M.D..
How much does Margaret Gustafson, M.D. prescribe under Medicare Part D? ▼
In 2023, Margaret Gustafson, M.D. wrote 75 Medicare Part D claims totaling $7K in drug costs for 31 beneficiaries.
What is Margaret Gustafson, M.D.'s Medicare quality score? ▼
Margaret Gustafson, M.D. has a CMS MIPS Final Score of 83.7/100 (Quality: 94.3, Cost: 51.4). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Margaret Gustafson, M.D. located? ▼
Margaret Gustafson, M.D. is located at 7 ATKINSON DR STE 200, Ludington, MI, 49431. Phone: (231) 843-6767.
What is Margaret Gustafson, M.D.'s NPI number? ▼
Margaret Gustafson, M.D.'s National Provider Identifier (NPI) is 1366446130, issued on 06/09/2005.
How many Obstetrics & Gynecology Physician providers are there in the US? ▼
There are 44,326 Obstetrics & Gynecology Physician providers across 56 states in the US. The average Obstetrics & Gynecology Physician provider writes 179 Medicare Part D claims per year.
What drugs does Margaret Gustafson, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Margaret Gustafson, M.D.'s most frequently prescribed drugs include Clotrimazole-Betamethasone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Margaret Gustafson, M.D. accept Medicare? ▼
Margaret Gustafson, M.D. appears in CMS Medicare data with 75 Part D claims and 31 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Margaret Gustafson, M.D.'s credentials? ▼
Margaret Gustafson, M.D.'s NPI is 1366446130 with credentials M.D.. 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

View source datasets and methodology notes
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

Compiled from official public sources by the editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.