John Nickolas Psaltis, OD

Primary specialty

OptometristTaxonomy code 152W00000X

License

I30001211OS Issued in DE

Practice address

3801 Kennett Pike Ste A102
Greenville, DE 19807-2307

Phone

(302) 777-4794

Fax

(302) 777-4872

NPI assigned

Nov 1, 2006

Last updated

Nov 21, 2025By the provider in NPPES

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Addresses

Other identifiers 2

Medicare fee-for-service enrollment

Enrolled in DE

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: No
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Optometry

Education

Pennsylvania College of Optometry, 1993

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Delaware Eye Associates PA

  • Optometrist
  • Greenville, DE
  • NPI 1194893925
  Medicare reassignment NPD Authorized official

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1162339200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1763683200000",
    "number": "1346327301",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3801 KENNETT PIKE STE A102",
            "city": "WILMINGTON",
            "state": "DE",
            "postal_code": "198072307",
            "telephone_number": "302-777-4794",
            "fax_number": "302-777-4872"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3801 KENNETT PIKE STE A102",
            "city": "GREENVILLE",
            "state": "DE",
            "postal_code": "198072307",
            "telephone_number": "302-777-4794",
            "fax_number": "302-777-4872"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "PSALTIS",
        "first_name": "JOHN",
        "middle_name": "NICKOLAS",
        "credential": "OD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-11-01",
        "last_updated": "2025-11-21",
        "certification_date": "2025-11-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "152W00000X",
            "taxonomy_group": "",
            "desc": "Optometrist",
            "state": "PA",
            "license": "G000697PA",
            "primary": false
        },
        {
            "code": "152W00000X",
            "taxonomy_group": "",
            "desc": "Optometrist",
            "state": "DE",
            "license": "I30001211OS",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "0000553722",
            "state": "DE"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "GROUP MEDICARE",
            "identifier": "G01011",
            "state": "DE"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Michael David Matthias, DMD
• Samata McClure, DO, MPH
• Mary Elizabeth Nasr, PHARMD
• Asit Patel, M.D
• Julia L Powell, MD
• Reich Foot and Ankle, LLC
• Maria F. Rubino-Watkins, PH.D.
• Nicholas John Sarlis, MD
• Cobi Shaw, OTR/L
• Total Integrative Health Co

• Optometrist in Greenville, DE
• Providers in Greenville, DE by specialty
• Optometrist in Delaware

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 21, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.