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ALEXANDER SHIFRIN MEDICAL PC
NPI 1104041391
Specialist in Brooklyn, NY

Active since April 15, 2007CLIA Certified · 2 labs
9920 4TH AVE, SIUTE #205, BROOKLYN, NY 11209(718) 238-4707(718) 238-4706 Get Directions Write a Review

NPPES record last updated: August 22, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Alexander Shifrin Medical Pc NPPES

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

ALEXANDER SHIFRIN MEDICAL PC (NPI 1104041391) is a healthcare organization registered as a specialist in Brooklyn, New York and active in the NPI registry since April 2007. The organization holds 2 active CLIA laboratory certificates and lists Alexander Shifrin, President, as its authorized official.

NPPES Registry Identity

NPI1104041391
Entity TypeOrganization
Primary Taxonomy174400000X
Legal Business NameALEXANDER SHIFRIN MEDICAL PC
Location Address9920 4TH AVE, SIUTE #205Brooklyn, NY 11209-8333
Mailing Address9920 4th Ave, Siute #205Brooklyn, NY 11209-8333 · (718) 238-4707 · Fax (718) 238-4706
Phone(718) 238-4707
Fax(718) 238-4706
Organization SubpartNo
Authorized OfficialAlexander ShifrinPresident · (212) 534-4707
Enumeration DateApril 15, 2007
Last NPPES UpdateAugust 22, 2020
✔ NPI 1104041391 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in NY · 203551
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
9920 4TH AVE, Brooklyn, NY 11209
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Other Identifiers 1

Medicaid01708429NY

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Alexander Shifrin Medical Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

2

Medicare enrollment records show 2 clinicians reassign Medicare billing to Alexander Shifrin Medical PC, which bills Medicare for the services they deliver. Of these, 1 practice at this address. They are listed nearest first.

Clinicians, nearest first (2)

Alexander Shifrin, MD
Obstetrics/Gynecology
NPI 1780651166
9920 4TH AVE SUITE 205
Brooklyn, NY 11209
(718) 238-4707
✔ PECOS✔ Accepts MedicareSame address
Willada Loch, BSN, NP
Nurse Practitioner
NPI 1215448717
121 E 60TH ST APT 1D
New York, NY 10022
(212) 534-4704
✔ PECOS✔ Accepts Medicare11 mi

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

CLIA Laboratory Certificates CMS CLIA 2

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Compliance 33D1042766

Alexander Shifrin Medical PC · Brooklyn, NY
Active · expires Mar 9, 2027
CLIA Number33D1042766
Laboratory TypePhysician Office
Certificate Effective DateMarch 10, 2025
Certificate Expiration DateMarch 9, 2027
Laboratory DirectorDr. Alexander I. Shifrin
Laboratory Phone(718) 238-4707
Laboratory LocationAlexander Shifrin Medical PC9920 4th Avenue, Suite 210, Brooklyn, NY 11209
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory after an inspection that finds the laboratory to be in compliance with all applicable CLIA requirements.

Certificate of Waiver 33D2089321

Alexander Shifrin Medical PC · New York, NY
Active · expires Dec 25, 2026
CLIA Number33D2089321
Laboratory TypePhysician Office
Certificate Effective DateDecember 26, 2024
Certificate Expiration DateDecember 25, 2026
Laboratory DirectorDr. Alexander I. Shifrin
Laboratory Phone(212) 534-4707
Laboratory LocationAlexander Shifrin Medical PC121 East 60th Street, Suite 1D, New York, NY 10022
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory to perform only waived tests.

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 Alexander Shifrin Medical PC's NPI number?

The NPI number for Alexander Shifrin Medical PC is 1104041391. It was assigned to this organization in the NPPES registry on April 15, 2007.

Where is Alexander Shifrin Medical PC located?

Alexander Shifrin Medical PC is located at 9920 4th Ave Siute #205, Brooklyn, NY 11209. The listed phone number is (718) 238-4707.

What is Alexander Shifrin Medical PC's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Alexander Shifrin Medical PC enrolled in Medicare?

Yes. Alexander Shifrin Medical PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Alexander Shifrin Medical PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians reassign their Medicare billing to Alexander Shifrin Medical PC, in Nurse Practitioner and Obstetrics/Gynecology. A 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 the clinician's services. Of these, 1 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Alexander Shifrin Medical PC hold CLIA laboratory certificates?

Yes. 2 active CLIA laboratory certificates are associated with this NPI under the federal Clinical Laboratory Improvement Amendments program. The certificates are listed in the CLIA Laboratory Certificates section above.

When was this NPI record last updated?

The NPPES record for Alexander Shifrin Medical PC was last updated on August 22, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.