Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Diane G Fries-Balog, O.D.

Optometrist in Pottstown, PA · enumerated 2006 · practices at Ronald B Gross & Associates PC.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1730103946

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Registry record

Entity type Individual (Type 1)

Name Dr. Diane G Fries-Balog

Credential O.D.

Sex Female

Practice address Pottstown, PA, 19464

Phone (610) 323-0450

Fax (610) 323-6369

Enumeration date Jul 27, 2006

Last updated in NPPES Nov 10, 2025

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

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License OEG001588 (PA) Primary

152W00000X Optometrist Eye and Vision Services Providers · License 27OA00519300 (NJ) Secondary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier	Type	State	Issuer
NJ1588	Other	PA	EYEMED
766110	Other	PA	HIGHMARK BC/BS
PA77433-1	Other	PA	VISION BENEFITS OF AMERICA (VBA)
0018193600003	Medicaid	PA	-
4390338	Other	PA	AETNA PPO
1105628	Other	PA	AETNA HMO
55470	Other	PA	DAVISVISION

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.

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Frequently asked questions

How do I verify Diane Fries-Balog's NPI record?

Cross-check NPI 1730103946 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1730103946 active?

Yes, as of the latest NPPES snapshot, NPI 1730103946 is active (record last updated 2025-11-10).

Other providers at this practice address

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Joel Fromer Orthodontics and Dentofacial Orthopedics Dentistry · Pottstown, PA NPI 1679577944 Ronald B Gross & Associates PC Orthodontics and Dentofacial Orthopedics Dentistry · Pottstown, PA NPI 1336263771

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-11-10.