DR. MICHAEL A KASS MD
NPI 1164440657
Ophthalmology in Saint Louis, MO

Q: What is Michael Kass's NPI number?

The NPI number for Michael Kass is 1164440657. It was assigned to this individual provider in the NPPES registry on July 17, 2006.

Q: What is Michael Kass's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Michael Kass was last updated on April 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.

Active since July 17, 2006PECOS Enrolled

4901 FOREST PARK AVE, DEPT OPHTHALMOLOGY, 6TH FL, SAINT LOUIS, MO 63108(314) 362-3937(314) 362-3725 Get Directions Write a Review

NPPES record last updated: April 17, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 25, 2024, Apr 10, 2024, Jun 7, 2022 and 4 more (7 updates tracked since 2015).

On this page

About Dr. Michael A Kass Md NPPES

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

DR. MICHAEL A KASS MD (NPI 1164440657) is an individual ophthalmology provider in Saint Louis, Missouri, licensed in Missouri (R4306) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1164440657

Entity TypeIndividualMale

Primary Taxonomy207W00000X

Provider Legal NameDR. MICHAEL A KASSCredential: MD

Location Address4901 FOREST PARK AVE, DEPT OPHTHALMOLOGY, 6TH FLSaint Louis, MO 63108-1495

Mailing AddressPo Box 7412011Chicago, IL 60674-2011 · (314) 362-3937 · Fax (314) 362-3725

Phone(314) 362-3937

Fax(314) 362-3725

Sole ProprietorNo

Enumeration DateJuly 17, 2006

Last NPPES UpdateApril 17, 20257 updates tracked since enumeration

NPPES CertifiedJune 7, 2022

✔ NPI 1164440657 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians

Taxonomy Code207W00000X

License✔ Licensed in MO · R4306

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.

4901 FOREST PARK AVE, Saint Louis, MO 63108

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Other Identifiers 1

Medicaid200541902MO

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Michael A Kass Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Michael Kass reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Washington University

Same address

Multi-Specialty

4901 FOREST PARK AVE
Saint Louis, MO 63108

Reassigned Medicare billing, Missouri enrollment
105 clinicians in this Medicare group

NPI 1013957562 (314) 362-3937

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63108 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$128.28 typical visit price

range $55.65 – $169.38

Typical copayment $32.07 (range $13.91 – $42.34)

Most-billed visit code 99204

Established Patient

$69.50 typical visit price

range $17.76 – $137.92

Typical copayment $17.37 (range $4.44 – $34.48)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. ERIN LEIGH DYER MD

General Practice

4901 FOREST PARK AVE, DIV IM GENERAL MED, STE 241
SAINT LOUIS, MO 63108

St. Louis City (314) 362-5060

DR. NICHOLE GALLEGOS ZEHNDER MD

General Practice

4901 FOREST PARK AVE, DIV IM GENERAL MED, STE 241
SAINT LOUIS, MO 63108

St. Louis City (314) 362-5060

MRS. NANCY J CIBULKA WHNP

Nurse Practitioner (Family)

4901 FOREST PARK AVE, STE 341
SAINT LOUIS, MO 63108

St. Louis City (314) 454-7882

DR. MARCIA J MCCABE PSYD

Psychologist

4901 FOREST PARK AVE, DEPT PSYCHIATRY, STE 441
SAINT LOUIS, MO 63108

St. Louis City (314) 286-1700

WASHINGTON UNIVERSITY

Clinic/Center (Multi-Specialty)

4901 FOREST PARK AVE
SAINT LOUIS, MO 63108

St. Louis City (314) 362-3937

DR. JING-WEI HUANG MD

Ophthalmology (Cornea and External Diseases Specialist)

4901 FOREST PARK AVE, DEPT OPHTHALMOLOGY, 6TH FL
SAINT LOUIS, MO 63108

St. Louis City (314) 362-3937

DR. DAVID L EISENBERG MD

Obstetrics & Gynecology (Gynecology)

4901 FOREST PARK AVE, DIV OBGYN FAMILY PLANNING, STE 710
SAINT LOUIS, MO 63108

St. Louis City (314) 362-4211

NICHOLAS RICHARD LEVERGOOD MD

Ophthalmology (Ophthalmic Plastic and Reconstructive Surgery)

4901 FOREST PARK AVE, DEPT OPHTHALMOLOGY, 6TH FL
SAINT LOUIS, MO 63108

St. Louis City (314) 362-3937

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 Michael Kass's NPI number?

The NPI number for Michael Kass is 1164440657. It was assigned to this individual provider in the NPPES registry on July 17, 2006.

Where is Michael Kass located?

Michael Kass practices at 4901 Forest Park Ave Dept Ophthalmology, 6th Fl, Saint Louis, MO 63108. The listed phone number is (314) 362-3937.

What is Michael Kass's specialty?

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

Is Michael Kass enrolled in Medicare?

Yes. Michael Kass is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Michael Kass's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Kass reassigns Medicare benefits to Washington University (Saint Louis, MO). The 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 Michael Kass's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Michael Kass was last updated on April 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.