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DR. FARZANA AHSAN M.D.
NPI 1346230430
Pediatrics in Mastic, NY

Active since October 28, 2005PECOS EnrolledCLIA 33D0160619 · Waiver
1 LAMBERT AVE, MASTIC, NY 11950(631) 281-4070(631) 281-4078 Get Directions Write a Review

NPPES record last updated: April 12, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Farzana Ahsan M.d. NPPES

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

DR. FARZANA AHSAN M.D. (NPI 1346230430) is an individual pediatrics provider in Mastic, New York, licensed in New York (171134) and active in the NPI registry since October 2005. She is enrolled in Medicare PECOS and holds a CLIA Waiver certificate valid through March 26, 2027.

NPPES Registry Identity

NPI1346230430
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameDR. FARZANA AHSANCredential: M.D.
Location Address1 LAMBERT AVEMastic, NY 11950-2100
Mailing Address1 Lambert AveMastic, NY 11950-2100 · (631) 281-4070 · Fax (631) 281-4078
Phone(631) 281-4070
Fax(631) 281-4078
Sole ProprietorYes
Enumeration DateOctober 28, 2005
Last NPPES UpdateApril 12, 2022
NPPES CertifiedApril 12, 2022
✔ NPI 1346230430 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in NY · 171134
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.
1 LAMBERT AVE, Mastic, NY 11950
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Other Identifiers 1

Medicaid01835776NY

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Farzana Ahsan 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 Farzana Ahsan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Stony Brook Children's Service, University Faculty Practice Corporatio
16 mi
Pediatrics
SUNY @ STONY BROOK, HSC, L11, RM 020
Stony Brook, NY 11794
  • Reassigned Medicare billing, New York enrollment
  • 191 clinicians in this Medicare group
NPI 1083660575 (631) 444-1362

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

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 Waiver 33D0160619

Dr Farzana Ahsan MD A Location Of Stony Brook Childrens Service · Mastic, NY
Active · expires Mar 26, 2027
CLIA Number33D0160619
Laboratory TypePhysician Office
Certificate Effective DateNovember 8, 2021
Certificate Expiration DateMarch 26, 2027
Laboratory DirectorDr. Farzana Ahsan
Laboratory Phone(516) 281-4070
Laboratory LocationDr Farzana Ahsan MD A Location Of Stony Brook Childrens Service1 Lambert Avenue, Mastic, NY 11950
CLIA data matches this NPI record on: Address Name
This certificate is issued to a laboratory to perform only waived tests.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11950 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
$105.06 typical visit price
range $67.40 – $203.53
Typical copayment $26.26 (range $16.85 – $50.88)
Most-billed visit code 99203
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
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.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. TATIANA S ERDELY M.D.
Pediatrics
1 LAMBERT AVE
MASTIC, NY 11950
Suffolk County (631) 281-4070

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 Farzana Ahsan's NPI number?

The NPI number for Farzana Ahsan is 1346230430. It was assigned to this individual provider in the NPPES registry on October 28, 2005.

Where is Farzana Ahsan located?

Farzana Ahsan practices at 1 Lambert Ave, Mastic, NY 11950. The listed phone number is (631) 281-4070.

What is Farzana Ahsan's specialty?

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

Is Farzana Ahsan enrolled in Medicare?

Yes. Farzana Ahsan is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Farzana Ahsan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Farzana Ahsan reassigns Medicare benefits to Stony Brook Children's Service, University Faculty Practice Corporatio (Stony Brook, 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 Farzana Ahsan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Does Farzana Ahsan hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 33D0160619) is associated with this NPI, valid through March 26, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Farzana Ahsan was last updated on April 12, 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.