DR. J ANTHONY GUICHARD M.D.
NPI 1770673501
Pathology - Anatomic Pathology & Clinical Pathology in Redwood City, CA

NPI Status: Active since October 13, 2006

Contact Information

170 ALAMEDA DE LAS PULGAS
SEQUOIA HOSP PATHOLOGY DEPT
REDWOOD CITY, CA
ZIP 94062
Phone: (650) 367-5544

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  • Individual
  • Male
  • Pathology
  • Anatomic Pathology & Clinical Pathology

About J GUICHARD

This page provides the complete NPI Profile along with additional information for J Guichard, a provider established in Redwood City, California with a medical specialization in Pathology, focusing in anatomic pathology & clinical pathology . The healthcare provider is registered in the NPI registry with number 1770673501 assigned on October 2006. The practitioner's primary taxonomy code is 207ZP0102X with license number A23865 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1770673501
Provider Name
DR. J ANTHONY GUICHARD M.D.
Gender
Male
Entity Type
Individual
Location Address
170 ALAMEDA DE LAS PULGAS SEQUOIA HOSP PATHOLOGY DEPT REDWOOD CITY, CA 94062
Location Phone
(650) 367-5544
Mailing Address
PO BOX 281560 SAN FRANCISCO, CA 94128
Mailing Phone
(650) 616-2948
Is Sole Proprietor?
No
Enumeration Date
10-13-2006
Last Update Date
09-11-2025
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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

Pathology Anatomic Pathology & Clinical Pathology

Taxonomy Code
207ZP0102X
Type
Allopathic & Osteopathic Physicians
License No.
A23865
License State
CA
Taxonomy Description
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

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)
1207U00000XAllopathic & Osteopathic Physicians

Nuclear Medicine

A23865 (CA)

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
A23865OTHER (01)CAMEDICAL LICENSE
00A238652MEDICAID (05)CA 

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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 1770673501, 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 59. The final step is to find the difference between that total and the next multiple of ten (60 - 59 = 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
7
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
0
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
7
Unchanged
Pos 7
3
Doubled → 6
Pos 8
5
Unchanged
Pos 9
0
Doubled → 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 6 → 12 → 3 3 → 6 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 1 + 4 + 0 + 1 + 2 + 7 + 6 + 5 + 0 + 24 = 59

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

The next multiple of ten after 59 is 60. The difference is the calculated check digit.

60 - 59 = 1
This NPI is valid
The calculated check digit is 1, which matches the last digit of 1770673501.

Other Providers at the Same Location


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

Specialist
170 ALAMEDA DE LAS PULGAS
REDWOOD CITY, CA 94062
Radiology (Radiation Oncology)
170 ALAMEDA DE LAS PULGAS, DEPT OF RADIATION ONCOLOGY SEQUOIA HOSPITAL
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Emergency Medicine
170 ALAMEDA DE LAS PULGAS
REDWOOD CITY, CA 94062
Radiology (Diagnostic Radiology)
170 ALAMEDA DE LAS PULGAS
REDWOOD CITY, CA 94062
Emergency Medicine
170 ALAMEDA DE LAS PULGAS
REDWOOD CITY, CA 94062
Emergency Medicine
170 ALAMEDA DE LAS PULGAS
REDWOOD CITY, CA 94062
Emergency Medicine
170 ALAMEDA DE LAS PULGAS
REDWOOD CITY, CA 94062
Nurse Practitioner
170 ALAMEDA DE LAS PULGAS, REDWOOD PULMONARY MEDICAL ASSOC.
REDWOOD CITY, CA 94062
Internal Medicine (Nephrology)
170 ALAMEDA DE LAS PULGAS
REDWOOD CITY, CA 94062
Anesthesiology
170 ALAMEDA DE LAS PULGAS
REDWOOD CITY, CA 94062
Anesthesiology
170 ALAMEDA DE LAS PULGAS
REDWOOD CITY, CA 94062
Internal Medicine
170 ALAMEDA DE LAS PULGAS, HOSPITALIST OFFICE
REDWOOD CITY, CA 94062
Internal Medicine
170 ALAMEDA DE LAS PULGAS
REDWOOD CITY, CA 94062
Internal Medicine
170 ALAMEDA DE LAS PULGAS
REDWOOD CITY, CA 94062
Emergency Medicine
170 ALAMEDA DE LAS PULGAS
REDWOOD CITY, CA 94062
Anesthesiology
170 ALAMEDA DE LAS PULGAS, #105
REDWOOD CITY, CA 94062
Anesthesiology
170 ALAMEDA DE LAS PULGAS, #105
REDWOOD CITY, CA 94062
Anesthesiology
170 ALAMEDA DE LAS PULGAS
REDWOOD CITY, CA 94062
Anesthesiology
170 ALAMEDA DE LAS PULGAS, #105
REDWOOD CITY, CA 94062
Rehabilitation Hospital
170 ALAMEDA DE LAS PULGAS
REDWOOD CITY, CA 94062

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1770673501, enumerated as an "individual" on October 13, 2006.

The provider is located at 170 ALAMEDA DE LAS PULGAS SEQUOIA HOSP PATHOLOGY DEPT REDWOOD CITY, CA 94062 and the phone number is (650) 367-5544.

Pathology with taxonomy code 207ZP0102X and a focus in Anatomic Pathology & Clinical Pathology.

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.