William Ensor, D.O.
Ophthalmology Physician · Danville, PA
William Ensor, D.O. is an ophthalmology physician with a practice address in Danville, Pennsylvania, and NPI 1942658984, issued on Jun 1, 2016. Check the license (Pennsylvania OS020519, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- William Ensor
- Credential
- D.O.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License numbers
- OS020519 PA
OT017140 PA
Self-reported in NPPES; status is on the state search - Practice location
- 16 Woodbine LN, Danville, PA 17821
- Phone
- (570) 271-6531
- Enumerated
- Jun 1, 2016
- Record last updated
- Jul 13, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20200629000202); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2016
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 1,088 in Pennsylvania → Look up another NPI →
Also registered at 16 Woodbine LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Justin Blessing, PTOrthopedic Physical Therapist1366395642
- Chelsea Britto, PA-CPhysician Assistant1073785184
- Kelly BrustmanStudent in an Organized Health Care Education/Training Program1841132834
Verify William Ensor in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS020519Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
16% fewer Medicare Part D claims than the average ophthalmology physician in 2024
1,279 Medicare Part D claims for 304 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 35% of claims.
Most prescribed
- Latanoprost343 claims
- Prednisolone Acetate203 claims
- Erythromycin121 claims
- Dorzolamide-Timolol115 claims
- Brimonidine Tartrate106 claims
- Cyclosporine66 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.
Bills Medicare through one group practice
- Geisinger ClinicDanville, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Ensor among 1,088 ophthalmology physician records in Pennsylvania
William Ensor, D.O. is one of 1,088 ophthalmology physician records with a practice address in Pennsylvania. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 85% of them.
- NPI issued2016 · 85% of these records are older, 14% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2016 · median 2000 among the 734 with a school on file
- Record last updated2020 · 64% 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 Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Pennsylvania
There are 1,088 ophthalmology physician records in Pennsylvania.
All 1,088 in Pennsylvania → Every provider in Danville → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Kendall Dobbins, M.D.Danville, PA 178211356317499
- Nathalie Guibord, M.D.Danville, PA 178211184693954
- Benjamin Hale, M.D.Danville, PA 178211588823561
- Shariq Hashmi, MDDanville, PA 178211508444381
- Herbert Ingraham, M.D.Danville, PA 178211427017128
- Steven Marks, M.D.Danville, PA 178211508827056
- Wells Reinheimer, D.O.Danville, PA 178211346441789
- Tamara Vrabec, M.D.Danville, PA 178211437156122
Common questions
What is William Ensor, D.O.'s NPI number?
William Ensor, D.O.'s National Provider Identifier (NPI) is 1942658984, issued on Jun 1, 2016. An NPI identifies a provider in billing; it is not a license.
Where is William Ensor, D.O. located?
The NPPES record lists a practice address at 16 Woodbine LN, Danville, PA, 17821. Phone: (570) 271-6531. Providers update this record themselves, so call before visiting.
How can I verify William Ensor, D.O.'s license?
NPPES lists Pennsylvania license number OS020519, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Ensor, D.O. prescribe under Medicare Part D?
In 2024, William Ensor, D.O. had 1,279 Medicare Part D claims for 304 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
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.