William Fredrick Foos, MD
Ophthalmology Physician · Philadelphia, PA
William Fredrick Foos, MD is an ophthalmology physician with a practice address in Philadelphia, Pennsylvania, and NPI 1821627688, issued on Apr 3, 2020. Check the license (Pennsylvania MD484625, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- William Fredrick Foos
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- MD484625 PA
Self-reported in NPPES; status is on the state search - Practice location
- 3401 Civic Center Blvd, Philadelphia, PA 19104
- Phone
- (267) 590-2791
- Enumerated
- Apr 3, 2020
- Record last updated
- Jun 10, 2024
- Medicare enrollment
- Enrolled (PECOS I20250915001724); accepts Medicare assignment
- Medical or professional school
- Drexel University College Of Medicine, 2020
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 1,088 in Pennsylvania → Look up another NPI →
Also registered at 3401 Civic Center Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Fredrick Foos in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD484625Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average ophthalmology physician in 2024
269 Medicare Part D claims for 103 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 31% of claims.
Most prescribed
- Latanoprost86 claims
- Dorzolamide-Timolol35 claims
- Timolol Maleate23 claims
- Prednisolone Acetate22 claims
- Travoprost16 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.
Industry payments in 2024: $16.57
1 payment: food and beverage; the largest payer was Sight Sciences, Inc. 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 one group practice
- Children's Eye Physicians P.C.Wheat Ridge, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Fredrick Foos among 1,088 ophthalmology physician records in Pennsylvania
William Fredrick Foos, MD 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 2020, is newer than 92% of them.
- NPI issued2020 · 92% of these records are older, 6% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2020 · median 2000 among the 734 with a school on file
- Record last updated2024 · 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 Philadelphia → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Lama Al-Aswad, M.D.Philadelphia, PA 191041336174937
- William Anninger, M.D.Philadelphia, PA 191041922038231
- Allison Brucker, M.D.Phialdelphia, PA 191041790718245
- Joshua Dunaief, MDPhiladelphia, PA 191041124139746
- Kristin Hammersmith, MDPhiladelphia, PA 191041437157187
- Deborah Herrmann, MDPhiladelphia, PA 191041346357548
- Bennie Jeng, MDPhiladelphia, PA 191041104852870
- Deborah Kelly, MDPhiladelphia, PA 191041073507703
Common questions
What is William Fredrick Foos, MD's NPI number?
William Fredrick Foos, MD's National Provider Identifier (NPI) is 1821627688, issued on Apr 3, 2020. An NPI identifies a provider in billing; it is not a license.
Where is William Fredrick Foos, MD located?
The NPPES record lists a practice address at 3401 Civic Center Blvd, Philadelphia, PA, 19104. Phone: (267) 590-2791. Providers update this record themselves, so call before visiting.
How can I verify William Fredrick Foos, MD's license?
NPPES lists Pennsylvania license number MD484625, 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 Fredrick Foos, MD prescribe under Medicare Part D?
In 2024, William Fredrick Foos, MD had 269 Medicare Part D claims for 103 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.