RALF HOLZER MD
NPI 1629064795
Pediatrics - Pediatric Cardiology in New York, NY
About Ralf Holzer Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RALF HOLZER MD (NPI 1629064795) is an individual pediatric cardiology provider in New York, New York, licensed in New York (287050) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS and is a graduate of Other (1994).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 4
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Ralf Holzer Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
5Medicare enrollment records show Ralf Holzer reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10065
- Reassigned Medicare billing, New York enrollment
- 980 clinicians in this Medicare group
New York, NY 10021
- Reassigned Medicare billing, New York enrollment
- 220 clinicians in this Medicare group
Flushing, NY 11355
- Reassigned Medicare billing, New York enrollment
- 645 clinicians in this Medicare group
Sacramento, CA 95817
- Reassigned Medicare billing, California enrollment
- 2,570 clinicians in this Medicare group
Grass Valley, CA 95949
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Regents Of The University Of California
- 918 clinicians in this Medicare group
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.
NEW YORK, NY 10065
NEW YORK, NY 10065
NEW YORK, NY 10065
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 Ralf Holzer's NPI number?
The NPI number for Ralf Holzer is 1629064795. It was assigned to this individual provider in the NPPES registry on September 23, 2005.
Where is Ralf Holzer located?
Ralf Holzer practices at 525 E 68th St, New York, NY 10065. The listed phone number is (212) 746-3561.
What is Ralf Holzer's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Cardiology, with taxonomy code 2080P0202X.
Is Ralf Holzer enrolled in Medicare?
Yes. Ralf Holzer is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Ralf Holzer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ralf Holzer reassigns Medicare benefits to 5 organizations: Weill Medical College Of Cornell (New York, NY), Memorial Pediatric Group (New York, NY), New York Queens Medicine And Surgery, P.C. (Flushing, NY), Regents Of The Univ Of Ca (Sacramento, CA) and Regents Of The University Of Ca (Grass Valley, CA). 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 Ralf Holzer'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 Ralf Holzer was last updated on October 15, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Ralf Holzer, MD · NPI 1629064795
Pediatric Cardiology physician in New York, New York. Individual provider, active in the CMS NPPES registry since September 23, 2005.
## Identity
- **NPI:** 1629064795 (Entity type: Individual)
- **Enumerated:** September 23, 2005
- **Primary specialty:** Pediatrics - Pediatric Cardiology · taxonomy 2080P0202X
- **State license:** 287050 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 525 E 68TH ST, New York, NY 10065-4870
- **Phone:** (212) 746-3561
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 5 organizations under Medicare reassignment (form CMS-855R): Weill Medical College Of Cornell (NPI 1326088675, New York, NY); Memorial Pediatric Group (NPI 1750352381, New York, NY); New York Queens Medicine And Surgery, P.C. (NPI 1740792233, Flushing, NY); Regents Of The Univ Of Ca (NPI 1285068783, Sacramento, CA); Regents Of The University Of Ca (NPI 1194705731, Grass Valley, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1994
## Record status
- **NPPES last updated:** October 15, 2018
- **Other identifiers:** Medicaid 64107337 (KY); Other HO4168321; Medicaid 2576985 (OH); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1629064795) · Data from the CMS NPPES public registry.