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DIANE CECILIA WILLIAMS PAC
NPI 1285609438
Physician Assistant in Havre De Grace, MD

Active since February 21, 2006PECOS Enrolled
323 S UNION AVE, HAVRE DE GRACE, MD 21078(410) 939-0961(410) 939-7832 Get Directions Write a Review

NPPES record last updated: February 28, 2018. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Diane Cecilia Williams Pac NPPES

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

DIANE CECILIA WILLIAMS PAC (NPI 1285609438) is an individual physician assistant in Havre De Grace, Maryland, licensed in Maryland (C0002014) and active in the NPI registry since February 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1285609438
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameDIANE CECILIA WILLIAMSCredential: PAC
Location Address323 S UNION AVEHavre De Grace, MD 21078-3201
Mailing Address930 Revolution StHavre De Grace, MD 21078-3718 · (410) 939-0961 · Fax (410) 939-7832
Phone(410) 939-0961
Fax(410) 939-7832
Sole ProprietorNo
Enumeration DateFebruary 21, 2006
Last NPPES UpdateFebruary 28, 2018
✔ NPI 1285609438 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License✔ Licensed in MD · C0002014
Definition
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Also ListedPhysician Assistant · MedicalTaxonomy 363AM0700X · License C0002014 (MD)
Also ListedPhysician Assistant · SurgicalTaxonomy 363AS0400X · License C0002014 (MD)
323 S UNION AVE, Havre De Grace, MD 21078
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Diane Cecilia Williams Pac is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21078 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
$94.08 typical visit price
range $60.73 – $183.44
Typical copayment $23.52 (range $15.18 – $45.86)
Most-billed visit code 99203
Established Patient
$75.47 typical visit price
range $19.60 – $149.17
Typical copayment $18.86 (range $4.90 – $37.29)
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.

Other Providers at the Same Location NPPES

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

TIDEWAY DERMATOLOGY, PA
Specialist
323 S UNION AVE
HAVRE DE GRACE, MD 21078
Harford County (410) 939-0961

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 Diane Williams's NPI number?

The NPI number for Diane Williams is 1285609438. It was assigned to this individual provider in the NPPES registry on February 21, 2006.

Where is Diane Williams located?

Diane Williams practices at 323 S Union Ave, Havre De Grace, MD 21078. The listed phone number is (410) 939-0961.

What is Diane Williams's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Diane Williams enrolled in Medicare?

Yes. Diane Williams is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Diane Williams was last updated on February 28, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.