Stephen De Waal Malefyt, M.D.
NPI 1245493337 · Pediatrics Physician · Albany, NY
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen De Waal Malefyt, M.D. is a Pediatrics Physician provider in Albany, NY (NPI 1245493337).
Provider details
- NPI number
- 1245493337
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 247241 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-07-08
- Last updated
- 2016-03-23
Frequently asked questions
- What is Stephen De Waal Malefyt's NPI number?
- Stephen De Waal Malefyt's National Provider Identifier (NPI) is 1245493337, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen De Waal Malefyt's specialty?
- Stephen De Waal Malefyt is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen De Waal Malefyt located?
- Stephen De Waal Malefyt's practice location on file with NPPES is 391 Myrtle Ave, Albany, NY 12208-3513.
- What is Stephen De Waal Malefyt's phone number?
- The practice phone number listed in the NPPES registry for Stephen De Waal Malefyt is (518) 262-5588.
- Does Stephen De Waal Malefyt accept Medicare?
- Stephen De Waal Malefyt is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen De Waal Malefyt's NPI active?
- Yes — Stephen De Waal Malefyt's NPI (1245493337) is active in the NPPES registry as of the last update on 2016-03-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.