What is Isaac Sapoznikow's NPI number?

Isaac Sapoznikow's National Provider Identifier (NPI) is 1851335772, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Isaac Sapoznikow's specialty?

Isaac Sapoznikow is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).

Where is Isaac Sapoznikow located?

Isaac Sapoznikow's practice location on file with NPPES is 701 North Broadway, Sleepy Hollow, NY 10591.

What is Isaac Sapoznikow's phone number?

The practice phone number listed in the NPPES registry for Isaac Sapoznikow is (914) 366-1554.

Is Isaac Sapoznikow's NPI active?

Yes — Isaac Sapoznikow's NPI (1851335772) is active in the NPPES registry as of the last update on 2007-07-08.

IndividualActive

Isaac Sapoznikow, MD

NPI 1851335772 · Emergency Medicine Physician · Sleepy Hollow, NY

Isaac Sapoznikow, MD is a Emergency Medicine Physician provider in Sleepy Hollow, NY (NPI 1851335772).

Provider details

NPI number: 1851335772
Entity type: Individual
Primary specialty: Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
License: 152180 (NY)

Specialties & taxonomies

Emergency Medicine PhysicianPrimary207P00000XLicense 152180 (NY)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(91/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
20 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

701 North Broadway

Phelps Memorial Hospital

Sleepy Hollow, NY 10591

Phone: (914) 366-1554

Fax: (610) 660-9384

Street-level locationGet directions

More NY providers

Mailing address

Po Box 13700 1365

Philadelphia, PA 19191-1365

Enumerated: 2006-06-15
Last updated: 2007-07-08

Frequently asked questions

What is Isaac Sapoznikow's NPI number?: Isaac Sapoznikow's National Provider Identifier (NPI) is 1851335772, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Isaac Sapoznikow's specialty?: Isaac Sapoznikow is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
Where is Isaac Sapoznikow located?: Isaac Sapoznikow's practice location on file with NPPES is 701 North Broadway, Sleepy Hollow, NY 10591.
What is Isaac Sapoznikow's phone number?: The practice phone number listed in the NPPES registry for Isaac Sapoznikow is (914) 366-1554.
Is Isaac Sapoznikow's NPI active?: Yes — Isaac Sapoznikow's NPI (1851335772) is active in the NPPES registry as of the last update on 2007-07-08.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.