DR. MICHAEL PHILIP KOSTER M.D.
NPI 1912031295
Pediatrics - Pediatric Infectious Diseases in Providence, RI

Q: What is Michael Koster's NPI number?

The NPI number for Michael Koster is 1912031295. It was assigned to this individual provider in the NPPES registry on March 16, 2007.

Q: What is Michael Koster's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Infectious Diseases, with taxonomy code 2080P0208X.

Q: When was this NPI record last updated?

The NPPES record for Michael Koster was last updated on June 30, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.

Active since March 16, 2007PECOS Enrolled

593 EDDY ST, DEPT PEDIATRICS, DIV PEDI INFECTIOUS DISEASES, PROVIDENCE, RI 02903(401) 444-8360(401) 444-5650 Get Directions Write a Review

NPPES record last updated: June 30, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Dr. Michael Philip Koster M.d. NPPES

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

DR. MICHAEL PHILIP KOSTER M.D. (NPI 1912031295) is an individual pediatric infectious diseases provider in Providence, Rhode Island, licensed in Rhode Island (MD12655) and active in the NPI registry since March 2007. He is enrolled in Medicare PECOS and maintains a secondary practice location in Providence.

NPPES Registry Identity

NPI1912031295

Entity TypeIndividualMale

Primary Taxonomy2080P0208X

Provider Legal NameDR. MICHAEL PHILIP KOSTERCredential: M.D.

Location Address593 EDDY ST, DEPT PEDIATRICS, DIV PEDI INFECTIOUS DISEASESProvidence, RI 02903-4923

Mailing Address593 Eddy Street, Dept Of Pediatrics, Division Of Pedi Inf. DiseasesProvidence, RI 02903 · (401) 444-8360 · Fax (401) 444-5650

Phone(401) 444-8360

Fax(401) 444-5650

Sole ProprietorNo

Enumeration DateMarch 16, 2007

Last NPPES UpdateJune 30, 2022

NPPES CertifiedJune 30, 2022

✔ NPI 1912031295 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Pediatric Infectious DiseasesAllopathic & Osteopathic Physicians

Taxonomy Code2080P0208X

License✔ Licensed in RI · MD12655

Definition

A pediatrician trained to care for children in the diagnosis, treatment and prevention of infectious diseases. This specialist can apply specific knowledge to affect a better outcome for pediatric infections with complicated courses, underlying diseases that predispose to unusual or severe infections, unclear diagnoses, uncommon diseases and complex or investigational treatments.

Also ListedPediatricsTaxonomy 208000000X · License MD12655 (RI)

593 EDDY ST, Providence, RI 02903

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Secondary Practice Location 1

Location 1101 Dudley StProvidence, RI 02905-2401 · Phone (401) 274-1122 · Fax (401) 453-7571

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include WellSense Health Plan.Insurance ›

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 Philip Koster M.d. 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 Reassignments

Medicare enrollment records show Michael Koster reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Rhode Island Hospital

Same address

Pediatrics

593 EDDY ST
Providence, RI 02903

Reassigned Medicare billing, Rhode Island enrollment
265 clinicians in this Medicare group

NPI 1861420333 (401) 444-6195

Affinity Physicians LLC

0.2 mi

Anesthesiology

101 DUDLEY STREET, WIH DEPT OF ANESTHESIOLOGY
Providence, RI 02905

Reassigned Medicare billing, Rhode Island enrollment
984 clinicians in this Medicare group

NPI 1053038471 (401) 274-1122

The Miriam Hospital

2.8 mi

Infectious Disease

14 THIRD STREET
Providence, RI 02906

Reassigned Medicare billing, Rhode Island enrollment
13 clinicians in this Medicare group

NPI 1568567790 (401) 793-7272

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

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. KEITH-AUSTIN SCARFO D.O.

Anesthesiology

593 EDDY ST, APC 6
PROVIDENCE, RI 02903

Providence County (401) 444-3777

AILEEN HSUEH

Surgery

593 EDDY ST
PROVIDENCE, RI 02903

Providence County (401) 444-8450

RHODE ISLAND HOSPITAL

General Acute Care Hospital

593 EDDY ST, MAIN 4
PROVIDENCE, RI 02903

Providence County (401) 444-7585

DR. GA HIE NAM M.D.

Pathology (Anatomic Pathology & Clinical Pathology)

593 EDDY ST
PROVIDENCE, RI 02903

Providence County (401) 444-5057

EUGENIE ATALLAH

Psychiatry & Neurology (Neurology)

593 EDDY ST
PROVIDENCE, RI 02903

Providence County (401) 606-2645

BRET CAULFIELD

Physician Assistant

593 EDDY ST
PROVIDENCE, RI 02903

Providence County (401) 444-4000

JUNG HO GONG

Student in an Organized Health Care Education/Training Program

593 EDDY ST
PROVIDENCE, RI 02903

Providence County (401) 793-2695

FANNY HUANG MD

Student in an Organized Health Care Education/Training Program

593 EDDY ST
PROVIDENCE, RI 02903

Providence County (401) 444-4741

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 Koster's NPI number?

The NPI number for Michael Koster is 1912031295. It was assigned to this individual provider in the NPPES registry on March 16, 2007.

Where is Michael Koster located?

Michael Koster practices at 593 Eddy St Dept Pediatrics, Div Pedi Infectious Diseases, Providence, RI 02903. The listed phone number is (401) 444-8360.

What is Michael Koster's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Infectious Diseases, with taxonomy code 2080P0208X.

Is Michael Koster enrolled in Medicare?

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

Which organizations bill Medicare for Michael Koster's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Koster reassigns Medicare benefits to 3 organizations: Rhode Island Hospital (Providence, RI), Affinity Physicians LLC (Providence, RI) and The Miriam Hospital (Providence, RI). Each 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 Koster's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Michael Koster accept?

Health plans from WellSense Health Plan list Michael Koster 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 Michael Koster was last updated on June 30, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.