DR. ALISHA CHRISTINE HEXIMER MD
NPI 1154063253
Surgery in Oakland, CA

NPI Status: Active since April 09, 2022

Contact Information

1411 E 31ST ST # 22134
OAKLAND, CA
ZIP 94602
Phone: (510) 437-4743
Fax: (510) 437-5017

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

Individual
Female
Surgery

About ALISHA HEXIMER

This page provides the complete NPI Profile along with additional information for Alisha Heximer, a provider established in Oakland, California with a medical specialization in Surgery. The healthcare provider is registered in the NPI registry with number 1154063253 assigned on April 2022. The practitioner's primary taxonomy code is 208600000X with license number A191971 (CA). The provider is registered as an individual and her NPI record was last updated March 2026. Alisha Heximer operates as a Multi-Specialty Group with one or more individual practitioners, who practice different areas of specialization.

NPI: 1154063253
Provider Name: DR. ALISHA CHRISTINE HEXIMER MD
Gender: Female
Entity Type: Individual
Location Address: 1411 E 31ST ST # 22134 OAKLAND, CA 94602
Location Phone: (510) 437-4743
Location Fax: (510) 437-5017
Mailing Address: 1411 E 31ST ST # 22134 OAKLAND, CA 94602
Mailing Phone: (510) 437-4743
Mailing Fax: (510) 437-5017
Is Sole Proprietor?: Yes
Enumeration Date: 04-09-2022
Last Update Date: 03-12-2026
Code Navigator

A surgeon like Alisha Heximer treats injuries, diseases, and deformities through surgical operations. A surgeon could correct physical deformities, repair bone and tissue, or perform preventive or elective surgeries. Surgeons also examine patients, perform and interpret diagnostic tests, and provide counsel on preventive healthcare.

Location Map

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: Surgery
Taxonomy Code: 208600000X
Type: Allopathic & Osteopathic Physicians
License No.: A191971
License State: CA
Taxonomy Description: A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

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 1154063253, we treat the final digit (3) 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 47. The final step is to find the difference between that total and the next multiple of ten (50 - 47 = 3).

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 → 10 → 1 + 0

Pos 4

Unchanged

Pos 5

Doubled → 0

Pos 6

Unchanged

Pos 7

Doubled → 6

Pos 8

Unchanged

Pos 9

Doubled → 10 → 1 + 0

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 5 → 10 → 1 0 → 0 3 → 6 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 1 + 1 + 0 + 4 + 0 + 6 + 6 + 2 + 1 + 0 + 24 = 47

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 47 is 50. The difference is the calculated check digit.

50 - 47 = 3

This NPI is valid

The calculated check digit is 3, which matches the last digit of 1154063253.