William S. Potter, MD
Ophthalmology Physician · Greenwich, CT
William S. Potter, MD is an ophthalmology physician with a practice address in Greenwich, Connecticut, and NPI 1205834645, issued on Jul 11, 2005. Check the license (Connecticut 030761, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- William S. Potter
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 030761 CT
Self-reported in NPPES; status is on the state search - Practice location
- 4 Dearfield Dr, Greenwich, CT 06831
- Phone
- (203) 869-3082
- Enumerated
- Jul 11, 2005
- Record last updated
- Jul 2, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (203) 869-6453
- Medicare enrollment
- Enrolled (PECOS I20110429000127); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 1985
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 336 in Connecticut → Look up another NPI →
Also registered at 4 Dearfield Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Christienne Coates, MDOphthalmology Physician1215937800
- Vincent Defina, DMDDentist1326350596
- Donna Densel, MDOphthalmology Physician1730187170
Verify William S. Potter in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 030761Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average ophthalmology physician in 2024
97 Medicare Part D claims for 45 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 45% of claims.
Most prescribed
- Tobramycin-Dexamethasone17 claims
- Lumigan11 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): 100 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: $74.25
3 payments; by number, the most common kind was food and beverage; the largest payer was Tarsus Pharmaceuticals, 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
- Refocus Eye Health OF Central Connecticut PCStamford, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William S. Potter among 336 ophthalmology physician records in Connecticut
William S. Potter, MD is one of 336 ophthalmology physician records with a practice address in Connecticut. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 81% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1985 · median 2000 among the 212 with a school on file
- Record last updated2010 · 66% 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 Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Connecticut
There are 336 ophthalmology physician records in Connecticut.
All 336 in Connecticut → Every provider in Greenwich → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Christienne Coates, MDGreenwich, CT 068311215937800
- Joseph Conway, MDGreenwich, CT 068311699763623
- Donna Densel, MDGreenwich, CT 068311730187170
- Gina Gladstein, MDGreenwich, CT 068311578561551
- Jerry Tsong, M.D.Greenwich, CT 068311760412787
- James Wilson, MDGreenwich, CT 068311851506224
- Omar Shakir, MD MBAGreenwich, CT 068301689934127
- Shelley Driesman, MDFairfield, CT 068251861509994
Common questions
What is William S. Potter, MD's NPI number?
William S. Potter, MD's National Provider Identifier (NPI) is 1205834645, issued on Jul 11, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William S. Potter, MD located?
The NPPES record lists a practice address at 4 Dearfield Dr, Greenwich, CT, 06831. Phone: (203) 869-3082. Providers update this record themselves, so call before visiting.
How can I verify William S. Potter, MD's license?
NPPES lists Connecticut license number 030761, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William S. Potter, MD prescribe under Medicare Part D?
In 2024, William S. Potter, MD had 97 Medicare Part D claims for 45 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is William S. Potter, MD's MIPS final score?
The 2023 MIPS final score is 100 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.