WILLIAM R. MARON MD PC
NPI 1508085101
Ophthalmology in Hartford, CT

Q: What is William R. Maron MD PC's NPI number?

The NPI number for William R. Maron MD PC is 1508085101. It was assigned to this organization in the NPPES registry on April 24, 2007.

Q: What is William R. Maron MD PC's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Active since April 24, 2007

21 WOODLAND ST, SUITE 222, HARTFORD, CT 06105(860) 522-5215(860) 247-3347 Get Directions Write a Review

NPPES record last updated: March 14, 2008. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About William R. Maron Md Pc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM R. MARON MD PC (NPI 1508085101) is a healthcare organization registered as an ophthalmology in Hartford, Connecticut and active in the NPI registry since April 2007. The organization lists William R Maron, Ceo, as its authorized official.

NPPES Registry Identity

NPI1508085101

Entity TypeOrganization

Primary Taxonomy207W00000X

Legal Business NameWILLIAM R. MARON MD PC

Location Address21 WOODLAND ST, SUITE 222Hartford, CT 06105-4318

Mailing Address21 Woodland St, Suite 222Hartford, CT 06105-4318 · (860) 522-5215 · Fax (860) 247-3347

Phone(860) 522-5215

Fax(860) 247-3347

Organization SubpartNo

Authorized OfficialWilliam R MaronCeo · (860) 522-5215

Enumeration DateApril 24, 2007

Last NPPES UpdateMarch 14, 2008

✔ NPI 1508085101 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians

Taxonomy Code207W00000X

License✔ Licensed in CT · 018676

Definition

An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

21 WOODLAND ST, Hartford, CT 06105

Open in Google Maps ↗

Other Identifiers 3

Medicare UPINB39482CT

Medicare ID-Type UnspecifiedC00168CT

Medicare NSC0230240001CT

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

William R. Maron Md Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to William R. Maron MD PC, which bills Medicare for the services this clinician delivers.

Clinician (1)

William Maron, M.D

Ophthalmology

NPI 1942646898

21 WOODLAND ST STE 222
Hartford, CT 06105

(860) 522-5215

✔ PECOS✔ Accepts Medicare0.1 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William R. Maron MD PC's NPI number?

The NPI number for William R. Maron MD PC is 1508085101. It was assigned to this organization in the NPPES registry on April 24, 2007.

Where is William R. Maron MD PC located?

William R. Maron MD PC is located at 21 Woodland St Suite 222, Hartford, CT 06105. The listed phone number is (860) 522-5215.

What is William R. Maron MD PC's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Is William R. Maron MD PC enrolled in Medicare?

Yes. William R. Maron MD PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through William R. Maron MD PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Ophthalmology) reassigns their Medicare billing to William R. Maron MD PC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does William R. Maron MD PC accept?

Health plans from Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and BlueCross BlueShield of Tennessee list William R. Maron MD PC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for William R. Maron MD PC was last updated on March 14, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.