TESSA DOOLITTLE MD
NPI 1548903420
Hospitalist in Syracuse, NY

NPI Status: Active since April 18, 2022

Contact Information

750 E ADAMS ST
SYRACUSE, NY
ZIP 13210
Phone: (315) 464-4506

NPI Profile Information
Primary Taxonomy
Secondary Taxonomies
Group Taxonomy
Secondary Locations
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Female
Hospitalist

About TESSA DOOLITTLE

This page provides the complete NPI Profile along with additional information for Tessa Doolittle, a provider established in Syracuse, New York with a medical specialization in Hospitalist. The healthcare provider is registered in the NPI registry with number 1548903420 assigned on April 2022. The practitioner's primary taxonomy code is 208M00000X with license number 341275 (NY). The provider is registered as an individual and her NPI record was last updated March 2026. Tessa Doolittle operates as a Multi-Specialty Group with one or more individual practitioners, who practice different areas of specialization.

NPI: 1548903420
Provider Name: TESSA DOOLITTLE MD
Gender: Female
Entity Type: Individual
Location Address: 750 E ADAMS ST SYRACUSE, NY 13210
Location Phone: (315) 464-4506
Mailing Address: 750 E ADAMS ST SYRACUSE, NY 13210
Is Sole Proprietor?: Yes
Enumeration Date: 04-18-2022
Last Update Date: 03-31-2026
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Location Map

Secondary Locations

736 Irving Ave
Syracuse, NY 13210
(315) 470-7111

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification: Hospitalist
Taxonomy Code: 208M00000X
Type: Allopathic & Osteopathic Physicians
License No.: 341275
License State: NY
Taxonomy Description: Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No.	Taxonomy Code	Type	Classification / Specialization	License No. (State)
1	207R00000X	Allopathic & Osteopathic Physicians	Internal Medicine	341275 (NY)

Group Taxonomy 193200000X MULTI-SPECIALTY GROUP

This provider is a business group of one or more individual practitioners, who practice with different areas of specialization.

NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1548903420, we treat the final digit (0) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 70. The final step is to find the difference between that total and the next multiple of ten (70 - 70 = 0).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 8

Pos 4

Unchanged

Pos 5

Doubled → 18 → 1 + 8

Pos 6

Unchanged

Pos 7

Doubled → 6

Pos 8

Unchanged

Pos 9

Doubled → 4

Check

Target digit

Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 4 → 8 9 → 18 → 9 3 → 6 2 → 4