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DR. STEPHEN KAREL DE WAAL MALEFYT M.D.
NPI 1245493337
Pediatrics in Albany, NY

Active since July 08, 2008PECOS Enrolled
76.7/100
CMS Quality Rating
391 MYRTLE AVE, SUITE 3A, ALBANY, NY 12208(518) 262-5588 Get Directions Write a Review

NPPES record last updated: March 23, 2016. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Stephen Karel De Waal Malefyt M.d. NPPES

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

DR. STEPHEN KAREL DE WAAL MALEFYT M.D. (NPI 1245493337) is an individual pediatrics provider in Albany, New York, licensed in New York (247241) and active in the NPI registry since July 2008. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1245493337
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameDR. STEPHEN KAREL DE WAAL MALEFYTCredential: M.D.
Location Address391 MYRTLE AVE, SUITE 3AAlbany, NY 12208-3513
Mailing Address391 Myrtle Ave, Suite 3aAlbany, NY 12208-3513 · (518) 262-5588
Phone(518) 262-5588
Sole ProprietorNo
Enumeration DateJuly 8, 2008
Last NPPES UpdateMarch 23, 2016
✔ NPI 1245493337 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in NY · 247241
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
391 MYRTLE AVE, Albany, NY 12208
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Stephen Karel De Waal Malefyt 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 Reassignment

Medicare enrollment records show Stephen De Waal Malefyt reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Albany Medical College
0.2 mi
Allergy & Immunology
47 NEW SCOTLAND AVE
Albany, NY 12208
  • Reassigned Medicare billing, New York enrollment
  • 1,640 clinicians in this Medicare group
NPI 1497921688 (518) 262-9600

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 12208 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
$84.93 typical visit price
range $54.87 – $166.88
Typical copayment $21.23 (range $13.71 – $41.72)
Most-billed visit code 99203
Established Patient
$97.08 typical visit price
range $17.54 – $136.14
Typical copayment $24.27 (range $4.38 – $34.03)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

76.7/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality77.96
Promoting Interoperability74
Improvement Activities40
Cost61.04

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.

HIFZA ISHTIAQ
Student in an Organized Health Care Education/Training Program
391 MYRTLE AVE
ALBANY, NY 12208
Albany County (518) 264-2866
ELIZABETH RAY MD
Pediatrics (Child Abuse Pediatrics)
391 MYRTLE AVE
ALBANY, NY 12208
Albany County (518) 262-5588
JAEYOUNG LEE MD
Student in an Organized Health Care Education/Training Program
391 MYRTLE AVE
ALBANY, NY 12208
Albany County (518) 262-6946
EMILY BOYER FNP
Nurse Practitioner (Family)
391 MYRTLE AVE
ALBANY, NY 12208
Albany County (518) 262-4942
TRICIA LICHUN DINI
Physician Assistant
391 MYRTLE AVE
ALBANY, NY 12208
Albany County (518) 262-5640
NYI-REIN KYAW
Student in an Organized Health Care Education/Training Program
391 MYRTLE AVE
ALBANY, NY 12208
Albany County (518) 264-2866
DR. UBAIDAT ABDUL-RAHMAN DO
Student in an Organized Health Care Education/Training Program
391 MYRTLE AVE
ALBANY, NY 12208
Albany County (518) 264-5026
EMMA KRYZANSKI MD
Student in an Organized Health Care Education/Training Program
391 MYRTLE AVE
ALBANY, NY 12208
Albany County (518) 264-5026

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 Stephen De Waal Malefyt's NPI number?

The NPI number for Stephen De Waal Malefyt is 1245493337. It was assigned to this individual provider in the NPPES registry on July 8, 2008.

Where is Stephen De Waal Malefyt located?

Stephen De Waal Malefyt practices at 391 Myrtle Ave Suite 3A, Albany, NY 12208. The listed phone number is (518) 262-5588.

What is Stephen De Waal Malefyt's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Stephen De Waal Malefyt enrolled in Medicare?

Yes. Stephen De Waal Malefyt is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Stephen De Waal Malefyt's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Stephen De Waal Malefyt reassigns Medicare benefits to Albany Medical College (Albany, NY). 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 Stephen De Waal Malefyt'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 Stephen De Waal Malefyt was last updated on March 23, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.