1. Home
  2. Directory
  3. Connecticut
  4. Greenwich
  5. Ophthalmology
  6. NPI Profile

DR. WILLIAM S POTTER MD
NPI 1205834645
Ophthalmology in Greenwich, CT

Active since July 11, 2005PECOS EnrolledAccepts Medicare Assignment
100/100
CMS Quality Rating
4 DEARFIELD DR, GREENWICH, CT 06831(203) 869-3082(203) 869-6453 Get Directions Write a Review

NPPES record last updated: July 2, 2010. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. William S Potter Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. WILLIAM S POTTER MD (NPI 1205834645) is an individual ophthalmology provider in Greenwich, Connecticut, licensed in Connecticut (030761) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS and is a graduate of New York Medical College (1985).

NPPES Registry Identity

NPI1205834645
Entity TypeIndividualMale
Primary Taxonomy207W00000X
Provider Legal NameDR. WILLIAM S POTTERCredential: MD
Location Address4 DEARFIELD DRGreenwich, CT 06831-5351
Mailing Address4 Dearfield DrGreenwich, CT 06831-5351 · (203) 869-3082 · Fax (203) 869-6453
Phone(203) 869-3082
Fax(203) 869-6453
Sole ProprietorNo
Medical School CMSNew York Medical CollegeGraduated 1985
Enumeration DateJuly 11, 2005
Last NPPES UpdateJuly 2, 2010
✔ NPI 1205834645 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians
Taxonomy Code207W00000X
License✔ Licensed in CT · 030761
Definition
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.
4 DEARFIELD DR, Greenwich, CT 06831
Open in Google Maps ↗

Other Identifiers 8

Other030761Connecticare
Medicare NSC0481650001
Medicare PIN180000650CT
Other2V8864Healthnet
Medicare UPINE66345
Other60K731Empire
Other533386Aetna
Other010030761CT05Anthem Bcbs

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. William S Potter Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9133186083
PECOS Enrollment IDI20110429000127
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient problem focused exam of visual system 92012
This is a routine check-up for existing patients focusing on the visual system. It involves examining your eyes to detect any potential issues or changes in your vision. It's a crucial part of maintaining good eye health.
188 services146 patients
Established patient complete exam of visual system 92014
An established patient complete exam of the visual system involves a thorough check of your eyes and vision. It assesses eye health, checks for diseases, and measures your ability to see clearly at different distances. It's a routine, non-invasive procedure.
104 services102 patients
Photography of the retina 92250
Photography of the retina, also known as retinal imaging, is a non-invasive procedure that captures images of the back of your eye. This helps doctors identify and monitor conditions like glaucoma, macular degeneration, or diabetic retinopathy. It's painless and quick, often part of a routine eye exam.
54 services53 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
15 services15 patients
New patient complete exam of visual system 92004
A new patient complete exam of the visual system is a thorough evaluation of your eyes and vision. It checks for any potential issues and assesses overall eye health. It includes tests for visual acuity, eye movement, and light response.
13 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06831 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$138.84 typical visit price
range $60.82 – $183.10
Typical copayment $34.71 (range $15.20 – $45.77)
Most-billed visit code 99204
Established Patient
$75.55 typical visit price
range $19.76 – $149.26
Typical copayment $18.88 (range $4.94 – $37.31)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality100
Improvement Activities40
Cost100

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JASMIN ALAYSHA GALLUP
Dental Hygienist
4 DEARFIELD DR
GREENWICH, CT 06831
Western Connecticut Planning Region (203) 422-5437
DR. VINCENT M BUONANNO DC
Chiropractor (Orthopedic)
4 DEARFIELD DR, SUITE 105
GREENWICH, CT 06831
Western Connecticut Planning Region (120) 366-1669
LINUS ABRAMS M.D.
Psychiatry & Neurology (Psychiatry)
4 DEARFIELD DR
GREENWICH, CT 06831
Western Connecticut Planning Region (203) 861-2654
NEW ENGLAND MEDICAL WEIGHTLOSS CENTER PLLC
Internal Medicine (Obesity Medicine)
4 DEARFIELD DR
GREENWICH, CT 06831
Western Connecticut Planning Region (480) 619-3062
DR. ELLEN GOLDEN DPM
Podiatrist
4 DEARFIELD DR, SUITE 106
GREENWICH, CT 06831
Western Connecticut Planning Region (203) 622-7504
MARIAN HENNIGES AU.D.
Audiologist
4 DEARFIELD DR, SUITE 104
GREENWICH, CT 06831
Western Connecticut Planning Region (203) 629-5500
CHRISTIENNE F COATES MD
Ophthalmology
4 DEARFIELD DR
GREENWICH, CT 06831
Western Connecticut Planning Region (203) 819-3082
JULIA SABETTA M.D.
Specialist
4 DEARFIELD DR, SUITE 203
GREENWICH, CT 06831
Western Connecticut Planning Region (203) 869-6111

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Potter's NPI number?

The NPI number for William Potter is 1205834645. It was assigned to this individual provider in the NPPES registry on July 11, 2005.

Where is William Potter located?

William Potter practices at 4 Dearfield Dr, Greenwich, CT 06831. The listed phone number is (203) 869-3082.

What is William Potter's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Is William Potter enrolled in Medicare?

Yes. William Potter is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for William Potter was last updated on July 2, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.