MOHAMAD HAKIM ABBASS
NPI 1679492151
Neurological Surgery in Palo Alto, CA

NPI Status: Active since July 10, 2026

Contact Information

213 QUARRY RD
PALO ALTO, CA
ZIP 94304
Phone: (650) 723-6469

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  • Individual
  • Neurological Surgery

About MOHAMAD ABBASS

This page provides the complete NPI Profile along with additional information for Mohamad Abbass, a provider established in Palo Alto, California operating as a Neurological Surgery. The healthcare provider is registered in the NPI registry with number 1679492151 assigned on July 2026. The practitioner's primary taxonomy code is 207T00000X with license number A207991 (CA). The provider is registered as an individual and their NPI record was last updated July 2026.

NPI
1679492151
Provider Name
MOHAMAD HAKIM ABBASS
Gender
Entity Type
Individual
Location Address
213 QUARRY RD PALO ALTO, CA 94304
Location Phone
(650) 723-6469
Mailing Address
213 QUARRY RD PALO ALTO, CA 94304
Is Sole Proprietor?
No
Enumeration Date
07-10-2026
Last Update Date
07-10-2026
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Location Map

Secondary Locations

  • 500 Pasteur Dr
    Palo Alto, CA 94304
    (650) 723-4000

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

Neurological Surgery

Taxonomy Code
207T00000X
Type
Allopathic & Osteopathic Physicians
License No.
A207991
License State
CA
Taxonomy Description
A neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and rehabilitation) of disorders of the central, peripheral, and autonomic nervous systems, including their supporting structures and vascular supply; the evaluation and treatment of pathological processes which modify function or activity of the nervous system; and the operative and non-operative management of pain. A neurological surgeon treats patients with disorders of the nervous system; disorders of the brain, meninges, skull, and their blood supply, including the extracranial carotid and vertebral arteries; disorders of the pituitary gland; disorders of the spinal cord, meninges, and vertebral column, including those which may require treatment by spinal fusion or instrumentation; and disorders of the cranial and spinal nerves throughout their distribution.

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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 1679492151, we treat the final digit (1) 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 69. The final step is to find the difference between that total and the next multiple of ten (70 - 69 = 1).

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
1
Doubled → 2
Pos 2
6
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
9
Unchanged
Pos 5
4
Doubled → 8
Pos 6
9
Unchanged
Pos 7
2
Doubled → 4
Pos 8
1
Unchanged
Pos 9
5
Doubled → 10 → 1 + 0
Check
1
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 7 → 14 → 5 4 → 8 2 → 4 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 4 + 9 + 8 + 9 + 4 + 1 + 1 + 0 + 24 = 69

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

The next multiple of ten after 69 is 70. The difference is the calculated check digit.

70 - 69 = 1
This NPI is valid
The calculated check digit is 1, which matches the last digit of 1679492151.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Pharmacist
213 QUARRY RD, ROOM 2726A
PALO ALTO, CA 94304
Pharmacist
213 QUARRY RD, ROOM 2726A
PALO ALTO, CA 94304
Neurological Surgery
213 QUARRY RD
PALO ALTO, CA 94304
Student in an Organized Health Care Education/Training Program
213 QUARRY RD
PALO ALTO, CA 94304
Neurological Surgery
213 QUARRY RD
PALO ALTO, CA 94304
Psychiatry & Neurology (Neuromuscular Medicine)
213 QUARRY RD
PALO ALTO, CA 94304
Student in an Organized Health Care Education/Training Program
213 QUARRY RD
PALO ALTO, CA 94304
Speech-Language Pathologist
213 QUARRY RD
PALO ALTO, CA 94304
Student in an Organized Health Care Education/Training Program
213 QUARRY RD
PALO ALTO, CA 94304
Psychiatry & Neurology (Neurology)
213 QUARRY RD
PALO ALTO, CA 94304
Psychiatry & Neurology (Neurology)
213 QUARRY RD, MC 5956
PALO ALTO, CA 94304
Psychiatry & Neurology (Neuromuscular Medicine)
213 QUARRY RD
PALO ALTO, CA 94304
Student in an Organized Health Care Education/Training Program
213 QUARRY RD
PALO ALTO, CA 94304
Student in an Organized Health Care Education/Training Program
213 QUARRY RD
PALO ALTO, CA 94304
Pharmacist (Ambulatory Care)
213 QUARRY RD
PALO ALTO, CA 94304
Pharmacist (Ambulatory Care)
213 QUARRY RD
PALO ALTO, CA 94304
Student in an Organized Health Care Education/Training Program
213 QUARRY RD
PALO ALTO, CA 94304
Psychiatry & Neurology (Neurology)
213 QUARRY RD
PALO ALTO, CA 94304
Student in an Organized Health Care Education/Training Program
213 QUARRY RD
PALO ALTO, CA 94304
Student in an Organized Health Care Education/Training Program
213 QUARRY RD
PALO ALTO, CA 94304

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1679492151, enumerated as an "individual" on July 10, 2026.

The provider is located at 213 QUARRY RD PALO ALTO, CA 94304 and the phone number is (650) 723-6469.

Neurological Surgery with taxonomy code 207T00000X.