Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Miguel Alberto Rainstein, MD

Surgery Physician in Buffalo, NY · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1639199284

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Registry record

Entity type Individual (Type 1)

Name Dr. Miguel Alberto Rainstein

Credential MD

Sex Male

Practice address 3495 Bailey Ave, Buffalo, NY, 14215

Phone (716) 834-9200

Fax (716) 862-8600

Enumeration date Jul 19, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 133539 (NY) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Miguel Rainstein?

Miguel Rainstein is registered in NPPES with the primary taxonomy of Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Deborah Farolino Hematology & Oncology Physician · Buffalo, NY NPI 1659377968 Michael Rudzinski Pharmacist · Buffalo, NY NPI 1164412938 Bradford Mersereau Family Medicine Physician · Buffalo, NY NPI 1447231741 Russell Talma Physician Assistant · Buffalo, NY NPI 1679558860 Deborah Maciolek Surgical Physician Assistant · Buffalo, NY NPI 1639154818 Dorothy Ganschow Medical Physician Assistant · Buffalo, NY NPI 1366427288 Alice Barber Surgical Physician Assistant · Buffalo, NY NPI 1902881790 Audrey Degen Surgical Physician Assistant · Buffalo, NY NPI 1912985896

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.