Gary I Markowitz, MD

Gary I Markowitz is a Ophthalmology Physician provider (Ophthalmology) practicing in Dover, DE, registered in the NPPES registry with NPI 1316912983 since 2006. The credential MD stands for Doctor of Medicine. Practices at Delaware Eye Care Center PA (listed at the same practice address in NPPES).

✓ Active NPI ✓ Valid NPI checksum

NPI	1316912983
Entity type	Individual (Type 1)
Name	Gary I Markowitz
Credential	MD
Sex	Male
Practice address	833 S GOVERNORS AVE, Dover, DE, 19904
Phone	3026741121
Fax	3026743891
Enumeration date	2006-02-17
Last updated in NPPES	2014-11-20

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
207W00000X	Ophthalmology Physician	Primary	C10002292	DE

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
0000010201	Medicaid	DE	—
2623617000	Other	DE	AMERIHEALTH INS CO
43531000	Other	DE	DAVIS VISION

Copy-ready billing details

Provider: Gary Markowitz, MD
NPI: 1316912983
Taxonomy: 207W00000X (Ophthalmology Physician)
Address: 833 S GOVERNORS AVE, Dover, DE, 19904

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1932174505	Delaware Eye Care Center PA	Organization	Ophthalmology Physician	Dover, DE
1487681284	Andrew Berman	Individual	Optometrist	Dover, DE
1700017902	Timothy Doyle	Individual	Ophthalmology Physician	Dover, DE
1942669957	Nikita Levy	Individual	Optometrist	Dover, DE

Verify this record

Cross-check NPI 1316912983 against the authoritative CMS record: view Gary I Markowitz 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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Gary Markowitz?

Gary Markowitz is registered in NPPES with the primary taxonomy of Ophthalmology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2014-11-20.