Michael B. Horsley, MD
Ophthalmology Physician · Sun City, AZ
Michael B. Horsley, MD is an ophthalmology physician with a practice address in Sun City, Arizona, and NPI 1871704007, issued on May 28, 2007. Check the license (Arizona 44829, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Michael B. Horsley
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License numbers
- 44829 AZ
243144 MA
Self-reported in NPPES; status is on the state search - Practice location
- 10615 W Thunderbird Blvd Ste 100, Sun City, AZ 85351
- Phone
- (480) 892-8400
- Enumerated
- May 28, 2007
- Record last updated
- Jun 15, 2023
- Fax
- (602) 508-4830
- Medicaid ID
- 635755 AZ
- Medicare enrollment
- Enrolled (PECOS I20110913000880); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 2006
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 353 in Arizona → Look up another NPI →
Also registered at 10615 W Thunderbird Blvd Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Warren Victor, MDOphthalmology Physician1770549719
Verify Michael B. Horsley in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 44829Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average ophthalmology physician in 2024
3,606 Medicare Part D claims for 1,230 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 52% of claims.
Most prescribed
- Prednisolone Acetate1,071 claims
- Latanoprost726 claims
- Brimonidine Tartrate330 claims
- Timolol Maleate292 claims
- Dorzolamide-Timolol289 claims
- Dorzolamide Hcl170 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 87.7 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $483.91
27 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. The 13,221 providers of this specialty with any payment received $4,535.02 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Barnet Dulaney Perkins Eye Center, PCSun City, AZ
- Southwestern Eye Center LtdSun City, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael B. Horsley among 353 ophthalmology physician records in Arizona
Michael B. Horsley, MD is one of 353 ophthalmology physician records with a practice address in Arizona. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 59% of them.
- NPI issued2007 · 59% of these records are older, 30% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2006 · median 2000 among the 220 with a school on file
- Record last updated2023 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 ophthalmology physician records list a practice address in Sun City
They are 10 of the 813 NPPES records with a practice address in Sun City, and 353 ophthalmology physician records in Arizona.
All 353 in Arizona → Every provider in Sun City → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Kenneth Batko, MDSun City, AZ 853511003965492
- Scott Harrison, MDSun City, AZ 853511841270295
- Emilio Justo, M.D.Sun City, AZ 853511407812647
- Patrick Kelley, MDSun City, AZ 853511508853128
- Eamon Leung, M.D.Sun City, AZ 853511275547200
- Elizabeth Tukan, MDSun City, AZ 853511649373127
- Warren Victor, MDSun City, AZ 853511770549719
- Gerald Walman, M.D.Sun City, AZ 853511730251836
Common questions
What is Michael B. Horsley, MD's NPI number?
Michael B. Horsley, MD's National Provider Identifier (NPI) is 1871704007, issued on May 28, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Michael B. Horsley, MD located?
The NPPES record lists a practice address at 10615 W Thunderbird Blvd Ste 100, Sun City, AZ, 85351. Phone: (480) 892-8400. Providers update this record themselves, so call before visiting.
How can I verify Michael B. Horsley, MD's license?
NPPES lists Arizona license number 44829, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael B. Horsley, MD prescribe under Medicare Part D?
In 2024, Michael B. Horsley, MD had 3,606 Medicare Part D claims for 1,230 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Michael B. Horsley, MD's MIPS final score?
The 2023 MIPS final score is 87.7 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.