MARVIN H. GREENBAUM, M.D. PC
NPI 1154438521
Ophthalmology in Bala Cynwyd, PA

Q: What is Marvin H. Greenbaum, M.D. PC's NPI number?

The NPI number for Marvin H. Greenbaum, M.D. PC is 1154438521. It was assigned to this organization in the NPPES registry on August 23, 2006.

Q: What is Marvin H. Greenbaum, M.D. PC's specialty?

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

Active since August 23, 2006

501 BELMONT AVE, BALA CYNWYD, PA 19004(610) 667-4066(610) 667-7955 Get Directions Write a Review

NPPES record last updated: February 7, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Marvin H. Greenbaum, M.d. Pc NPPES

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

MARVIN H. GREENBAUM, M.D. PC (NPI 1154438521) is a healthcare organization registered as an ophthalmology in Bala Cynwyd, Pennsylvania and active in the NPI registry since August 2006. The organization lists Keith J Mathers, Ophthalmology, as its authorized official.

NPPES Registry Identity

NPI1154438521

Entity TypeOrganization

Primary Taxonomy207W00000X

Legal Business NameMARVIN H. GREENBAUM, M.D. PC

Location Address501 BELMONT AVEBala Cynwyd, PA 19004-1302

Mailing Address501 Belmont AveBala Cynwyd, PA 19004-1302 · (610) 667-4066 · Fax (610) 667-7955

Phone(610) 667-4066

Fax(610) 667-7955

Organization SubpartNo

Authorized OfficialKeith J MathersOphthalmology · (610) 667-4066

Enumeration DateAugust 23, 2006

Last NPPES UpdateFebruary 7, 2025

NPPES CertifiedFebruary 7, 2025

✔ NPI 1154438521 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians

Taxonomy Code207W00000X

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.

501 BELMONT AVE, Bala Cynwyd, PA 19004

Open in Google Maps ↗

Other Identifiers 1

OtherCG3941PA · Railroad Medicare

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

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Marvin H. Greenbaum, M.d. Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by November 30, 2026

Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.

StateEnrollment IDDue date

StatePennsylvaniaEnrollment IDO20050413000443Non-DME Part B · Clinic/Group PracticeDue dateNovember 30, 2026

Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 5 clinicians reassign Medicare billing to Marvin H. Greenbaum, M.D. PC, which bills Medicare for the services they deliver. Of these, 3 practice at this address and 5 within 10 miles. They are listed nearest first.

Clinicians, nearest first (5)

Keith Mathers, M.D.

Ophthalmology

NPI 1295989523

501 BELMONT AVE
Bala Cynwyd, PA 19004

(610) 667-4066

✔ PECOS✔ Accepts MedicareSame address

Ralph Digiovanni, M.D.

Ophthalmology

NPI 1053428144

501 BELMONT AVE
Bala Cynwyd, PA 19004

(610) 667-4066

✔ PECOS✔ Accepts MedicareSame address

Marvin Greenbaum, M.D.

Ophthalmology

NPI 1073620472

501 BELMONT AVE
Bala Cynwyd, PA 19004

(610) 667-4066

✔ PECOSSame address

Bhawanjot Minhas, OD

Optometry

NPI 1174963292

1200 W GODFREY AVE
Philadelphia, PA 19141

(215) 276-6000

✔ PECOS✔ Accepts Medicare5.2 mi

Jazmin Logendra, O.D.

Optometry

NPI 1689873465

100 E LEHIGH AVE SUITE 201
Philadelphia, PA 19125

(215) 634-6563

✔ PECOS✔ Accepts Medicare5.7 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 Marvin H. Greenbaum, M.D. PC's NPI number?

The NPI number for Marvin H. Greenbaum, M.D. PC is 1154438521. It was assigned to this organization in the NPPES registry on August 23, 2006.

Where is Marvin H. Greenbaum, M.D. PC located?

Marvin H. Greenbaum, M.D. PC is located at 501 Belmont Ave, Bala Cynwyd, PA 19004. The listed phone number is (610) 667-4066.

What is Marvin H. Greenbaum, M.D. PC's specialty?

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

Is Marvin H. Greenbaum, M.D. PC enrolled in Medicare?

Yes. Marvin H. Greenbaum, M.D. PC is registered in the Medicare PECOS enrollment system.

When is Marvin H. Greenbaum, M.D. PC's Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (Pennsylvania, Clinic/Group Practice) is due for revalidation by November 30, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.

How many clinicians bill Medicare through Marvin H. Greenbaum, M.D. PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 5 clinicians in 2 Medicare specialties reassign their Medicare billing to Marvin H. Greenbaum, M.D. 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. The largest specialties are Ophthalmology (3) and Optometry (2). Of these, 3 practice at this address and 5 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Marvin H. Greenbaum, M.D. PC was last updated on February 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months 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.