Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. LYNN M. CIESLAK M.D.
NPI 1518951011
Internal Medicine in Williamsville, NY

Q: What is Lynn Cieslak's NPI number?

The NPI number for Lynn Cieslak is 1518951011. It was assigned to this individual provider in the NPPES registry on September 12, 2005.

Q: What is Lynn Cieslak's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Lynn Cieslak was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since September 12, 2005

1540 MAPLE RD, WILLIAMSVILLE, NY 14221(716) 481-7384 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

On this page

About Dr. Lynn M. Cieslak M.d. NPPES

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

DR. LYNN M. CIESLAK M.D. (NPI 1518951011) is an individual internal medicine provider in Williamsville, New York, licensed in New York (206530) and active in the NPI registry since September 2005.

NPPES Registry Identity

NPI1518951011

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameDR. LYNN M. CIESLAKCredential: M.D.

Location Address1540 MAPLE RDWilliamsville, NY 14221-3647

Mailing Address6041 Corinne LnClarence Center, NY 14032-9510 · (716) 481-7384

Phone(716) 481-7384

Sole ProprietorNo

Enumeration DateSeptember 12, 2005

Last NPPES UpdateJuly 13, 2026

✔ NPI 1518951011 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in NY · 206530

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

1540 MAPLE RD, Williamsville, NY 14221

Open in Google Maps ↗