Diane G Fries-Balog, O.D.

Primary specialty

OptometristTaxonomy code 152W00000X

License

OEG001588 Issued in PA

Practice address

531 N Charlotte St
Pottstown, PA 19464-4602

Phone

(610) 323-0450

Fax

(610) 323-6369

NPI assigned

Jul 27, 2006

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 2

Addresses

Other identifiers 7

Medicare fee-for-service enrollment

Enrolled in PA

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, 1992

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

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

• Royer Optical, LLC

  • Optician
  • Pottstown, PA
  • NPI 1598857534
  NPD (past)

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

{
    "created_epoch": "1153958400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1762732800000",
    "number": "1730103946",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "531 N CHARLOTTE ST",
            "city": "POTTSTOWN",
            "state": "PA",
            "postal_code": "194644602",
            "telephone_number": "610-323-0450",
            "fax_number": "610-323-6369"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "531 N CHARLOTTE ST",
            "city": "POTTSTOWN",
            "state": "PA",
            "postal_code": "194644602",
            "telephone_number": "610-323-0450",
            "fax_number": "610-323-6369"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "FRIES-BALOG",
        "first_name": "DIANE",
        "middle_name": "G",
        "name_prefix": "Dr.",
        "credential": "O.D.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2006-07-27",
        "last_updated": "2025-11-10",
        "certification_date": "2025-11-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "152W00000X",
            "taxonomy_group": "",
            "desc": "Optometrist",
            "state": "PA",
            "license": "OEG001588",
            "primary": true
        },
        {
            "code": "152W00000X",
            "taxonomy_group": "",
            "desc": "Optometrist",
            "state": "NJ",
            "license": "27OA00519300",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "EYEMED",
            "identifier": "NJ1588",
            "state": "PA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "HIGHMARK BC/BS",
            "identifier": "766110",
            "state": "PA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "VISION BENEFITS OF AMERICA (VBA)",
            "identifier": "PA77433-1",
            "state": "PA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "0018193600003",
            "state": "PA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "AETNA PPO",
            "identifier": "4390338",
            "state": "PA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "AETNA HMO",
            "identifier": "1105628",
            "state": "PA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "DAVISVISION",
            "identifier": "55470",
            "state": "PA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Christine Fretz
• Krista Lynn Fretz, COTA/L
• Alissa Marie Frey
• Ann M Frey, PT
• Rachel Frey, RD, LDN
• Joel Fromer, DDS
• Kayleigh Lauren Fry
• Tracy Fryer
• Kayla Ann Gabbett, PA-C
• Rodney Gabel, DC

• Optometrist in Pottstown, PA
• Providers in Pottstown, PA by specialty
• Optometrist in Pennsylvania

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 10, 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.