2026 NPPES data Ophthalmology Physician NPI 1043638661 MD
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SEAN HANSEN, MD

Ophthalmology Physician in ANN ARBOR, 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
827
Medicare Part D claims · 327 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
47%
generic claims · 53% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

SEAN HANSEN, MD filed 827 Medicare Part D claims in 2023 as a Ophthalmology Physician in ANN ARBOR, Michigan, prescribing 47% generic.

827
Part D claims, 2023
47%
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.

SEAN HANSEN, MD's Medicare Part D volume vs every U.S. prescriber

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

827 Top 27% higher than 73% 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)

SEAN HANSEN, 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 SEAN HANSEN, MD?

Quality data not reported

NPI registry status

Active

Issued 04/01/2014

NPI 1043638661

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

827 42% vs specialty avg

2023 prescription claims

Specialty avg: 1,420

Specialty distribution in Michigan

How Ophthalmology Physician compares to other specialties among Michigan providers

Michigan providers

Ophthalmology Physician share within Michigan

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

Specialty board-certification context

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

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

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

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

SEAN HANSEN, MD appears in the CMS NPPES registry as a Ophthalmology Physician provider holding MD credentials at 1000 WALL ST, ANN ARBOR, MI, 48105, with a listed phone of (734) 764-4190. NPI 1043638661 was issued on 04/01/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HANSEN 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 827 prescription claims written by this provider, covering 327 Medicare beneficiaries and totaling roughly $115K in drug spend, split 53% brand-name and 47% 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.

Ophthalmology Physician is a mid-sized specialty nationwide, with 22,090 enrolled providers across 56 states and an average of 1,420 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

1000 WALL ST
ANN ARBOR, MI 48105

Provider Details

NPI 1043638661
Specialty Ophthalmology Physician
Credentials MD
Gender Male
NPI Issued 04/01/2014

Hospital and facility affiliations

Facilities where SEAN HANSEN, 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.

REGENTS OF THE UNIVERSITY OF MICHIGAN
ANN ARBOR, 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).

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 SEAN HANSEN, MD. To verify SEAN HANSEN, MD'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 · Brand-heavy

SEAN HANSEN, MD — brand share 53.0%
Specialty average (est.)

53% brand-name claims vs 47% generic, on 827 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.

827
Total Claims
$115K
Total Drug Cost
327
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,106
Total Day Supply
26,365
Brand vs Generic
53% brand / 47% generic
Brand Drug Cost
$102K
Generic Drug Cost
$13K
Antibiotic Claims
12

Patient Demographics

Average Patient Age
72.9 years
Avg HCC Risk Score
1.32
Gender Split
67% female / 33% male
Age Distribution
<65: 31, 65-74: 159, 75-84: 110, 85+: 27

Top Prescribed Drugs (Medicare Part D)

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

What SEAN HANSEN, 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
Prednisolone Acetate
272
Latanoprost
97
Erythromycin
Erythromycin Base
60
Ketorolac Tromethamine
54
Restasis
Cyclosporine
53
Timolol Maleate
42
Cyclosporine
39
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
30
Neomycin-Polymyxin-Dexameth
Neomycin/Polymyxin B/Dexametha
29
Brimonidine Tartrate
28

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

Ophthalmology Physician Overview

How SEAN HANSEN, MD fits within the Ophthalmology Physician landscape nationally.

22,090
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,420
Avg Claims per Provider

SEAN HANSEN, MD's 827 claims are below the specialty average of 1,420.

Nearby Ophthalmology Physician Providers in Michigan

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

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

Frequently Asked Questions

What is SEAN HANSEN, MD's specialty?
SEAN HANSEN, MD specializes in Ophthalmology Physician and practices in ANN ARBOR, Michigan. Credentials: MD.
How much does SEAN HANSEN, MD prescribe under Medicare Part D?
In 2023, SEAN HANSEN, MD wrote 827 Medicare Part D claims totaling $115K in drug costs for 327 beneficiaries.
Where is SEAN HANSEN, MD located?
SEAN HANSEN, MD is located at 1000 WALL ST, ANN ARBOR, MI, 48105. Phone: (734) 764-4190.
What is SEAN HANSEN, MD's NPI number?
SEAN HANSEN, MD's National Provider Identifier (NPI) is 1043638661, issued on 04/01/2014.
Does SEAN HANSEN, MD prescribe more brand-name or generic drugs?
SEAN HANSEN, MD's prescribing is 53% brand-name and 47% generic drugs by claim count, with $102K in brand drug costs.
How many Ophthalmology Physician providers are there in the US?
There are 22,090 Ophthalmology Physician providers across 56 states in the US. The average Ophthalmology Physician provider writes 1,420 Medicare Part D claims per year.
What drugs does SEAN HANSEN, MD prescribe most often?
Based on 2023 Medicare Part D data, SEAN HANSEN, MD's most frequently prescribed drugs include Prednisolone Acetate, Latanoprost, Erythromycin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SEAN HANSEN, MD accept Medicare?
SEAN HANSEN, MD appears in CMS Medicare data with 827 Part D claims and 327 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SEAN HANSEN, MD's credentials?
SEAN HANSEN, MD's NPI is 1043638661 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