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DR. DARCY L WILLIAMS O.D.
NPI 1932263738
Optometrist in Harrisburg, PA

Active since December 19, 2006PECOS EnrolledAccepts Medicare Assignment
4240 ELMERTON AVE, HARRISBURG, PA 17109(717) 652-7710(717) 541-9842 Get Directions Write a Review

NPPES record last updated: May 15, 2008. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Darcy L Williams O.d. NPPES

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

DR. DARCY L WILLIAMS O.D. (NPI 1932263738) is an individual optometrist in Harrisburg, Pennsylvania, licensed in Pennsylvania (OEG000163) and active in the NPI registry since December 2006. She is enrolled in Medicare PECOS and is a graduate of Pennsylvania College Of Optometry (1991).

NPPES Registry Identity

NPI1932263738
Entity TypeIndividualFemale
Primary Taxonomy152W00000X
Provider Legal NameDR. DARCY L WILLIAMSCredential: O.D.
Location Address4240 ELMERTON AVEHarrisburg, PA 17109-2317
Mailing Address4240 Elmerton AveHarrisburg, PA 17109-2317 · (717) 652-7710 · Fax (717) 541-9842
Phone(717) 652-7710
Fax(717) 541-9842
Sole ProprietorNo
Medical School CMSPennsylvania College Of OptometryGraduated 1991
Enumeration DateDecember 19, 2006
Last NPPES UpdateMay 15, 2008
✔ NPI 1932263738 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOptometristEye and Vision Services Providers
Taxonomy Code152W00000X
License✔ Licensed in PA · OEG000163
Definition
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.
4240 ELMERTON AVE, Harrisburg, PA 17109
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Other Identifiers 2

Medicare PIN727197X3XPA
Medicare UPINV03988PA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Darcy L Williams O.d. 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 ID4486608163
PECOS Enrollment IDI20050304000764
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.

Medicare Billing Reassignment

Medicare enrollment records show Darcy Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Optometry Associates, P.C.
2.6 mi
Optometrist
4392 STURBRIDGE DRIVE
Harrisburg, PA 17110
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 4 clinicians in this Medicare group
NPI 1063569036 (717) 652-7710

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 6

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 office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
171 services171 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.
29 services22 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
24 services24 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
23 services21 patients
Exam of visual field with extended testing 92083
An extended visual field exam is a detailed test to evaluate your peripheral (side) vision. It helps to detect any potential blind spots which may not be noticeable in daily life. These could be caused by eye diseases like glaucoma, or neurological conditions.
15 services14 patients
Imaging of optic nerve 92133
Imaging of the optic nerve is a non-invasive procedure that captures detailed pictures of your optic nerve. It helps doctors assess eye health, particularly for conditions like glaucoma. It's painless, quick, and uses safe technology like MRI or OCT (Optical Coherence Tomography).
13 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 17109 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
$126.34 typical visit price
range $54.64 – $166.87
Typical copayment $31.58 (range $13.66 – $41.71)
Most-billed visit code 99204
Established Patient
$68.36 typical visit price
range $17.33 – $135.84
Typical copayment $17.09 (range $4.33 – $33.96)
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.

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 Darcy Williams's NPI number?

The NPI number for Darcy Williams is 1932263738. It was assigned to this individual provider in the NPPES registry on December 19, 2006.

Where is Darcy Williams located?

Darcy Williams practices at 4240 Elmerton Ave, Harrisburg, PA 17109. The listed phone number is (717) 652-7710.

What is Darcy Williams's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

Is Darcy Williams enrolled in Medicare?

Yes. Darcy Williams 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.

Which organization bills Medicare for Darcy Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Darcy Williams reassigns Medicare benefits to Optometry Associates, P.C. (Harrisburg, PA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Darcy Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Darcy Williams accept?

Health plans from Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and Blue Cross and Blue Shield of Texas list Darcy Williams as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Darcy Williams was last updated on May 15, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.