Dr. William Parker Marks Jr., M.D.

Dr. William Parker Marks Jr. is a Ophthalmology Physician provider (Ophthalmology) practicing in Canton, GA, registered in the NPPES registry with NPI 1356337448 since 2005. The credential MD stands for Doctor of Medicine. Practices at Etowah Eye Clinic, P.C. (listed at the same practice address in NPPES).

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1356337448
Entity type	Individual (Type 1)
Name	Dr. William Parker Marks Jr.
Credential	M.D.
Sex	Male
Practice address	Canton, GA, 30114
Phone	6788800662
Fax	6788800675
Enumeration date	2005-09-23
Last updated in NPPES	2010-07-14

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
207W00000X	Ophthalmology Physician	Primary	030829	GA

MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
000575858J	Medicaid	GA	—

Copy-ready billing details

Provider: William Marks, M.D.
NPI: 1356337448
Taxonomy: 207W00000X (Ophthalmology Physician)
Address: Canton, GA, 30114

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1932322302	Etowah Eye Clinic, P.C.	Organization	Ophthalmology Physician	Canton, GA

Verify this record

Cross-check NPI 1356337448 against the authoritative CMS record: view Dr. William Parker Marks Jr. on the official NPPES registry .

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.

Frequently asked questions

How do I verify William Marks's NPI record?

Cross-check NPI 1356337448 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1356337448 active?

Yes — as of the latest NPPES snapshot, NPI 1356337448 is active (record last updated 2010-07-14).

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2010-07-14.