MR. JOHN PAUL KOPCHAK PA-C
NPI 1376699181
Physician Assistant - Medical in San Francisco, CA

NPI Status: Active since January 25, 2007

Contact Information

45 CASTRO ST
423
SAN FRANCISCO, CA
ZIP 94114
Phone: (415) 551-9758
Fax: (415) 437-5434

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  • Individual
  • Male
  • Physician Assistant
  • Medical

About JOHN KOPCHAK

This page provides the complete NPI Profile along with additional information for John Kopchak, a primary care provider established in San Francisco, California with a medical specialization in Physician Assistant, focusing in medical . The healthcare provider is registered in the NPI registry with number 1376699181 assigned on January 2007. The practitioner's primary taxonomy code is 363AM0700X with license number PA12753 (CA). The provider is registered as an individual and his NPI record was last updated 16 years ago.

NPI
1376699181
Provider Name
MR. JOHN PAUL KOPCHAK PA-C
Gender
Male
Entity Type
Individual
Location Address
45 CASTRO ST 423 SAN FRANCISCO, CA 94114
Location Phone
(415) 551-9758
Location Fax
(415) 437-5434
Mailing Address
179 GREVILLIA DR PETALUMA, CA 94952
Mailing Phone
(510) 495-4585
Is Sole Proprietor?
Yes
Enumeration Date
01-25-2007
Last Update Date
09-03-2010
Code Navigator

A primary care provider (PCP) like John Kopchak sees people with common medical problems. The primary care provider might be a doctor, physician assistant, nurse practitioner or clinic that are usually involved in your long-term care. A PCP might provide preventive care, treat common medical conditions, identify urgent medical problems and refer you to specialists when necessary. Primary care is usually provided in an outpatient facility but if you are admitted to a hospital your PCP may assist in your care. The most common medical conditions seen by primary care providers are: hypertension, upper respiratory tract infections, depression or anxiety, back pain, arthritis, dermatitis, diabetes, urinary tract infections, etc .

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

Physician Assistant Medical

Taxonomy Code
363AM0700X
Type
Physician Assistants & Advanced Practice Nursing Providers
License No.
PA12753
License State
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 1376699181, 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
3
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
6
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
9
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
1
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
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 9 → 18 → 9 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 1 + 4 + 6 + 1 + 2 + 9 + 1 + 8 + 1 + 1 + 6 + 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 1376699181.

Other Providers at the Same Location


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

Internal Medicine
45 CASTRO ST, STE 402
SAN FRANCISCO, CA 94114
Surgery (Plastic and Reconstructive Surgery)
45 CASTRO ST, STE 121
SAN FRANCISCO, CA 94114
Surgery (Surgery of the Hand)
45 CASTRO ST, SUITE 121
SAN FRANCISCO, CA 94114
Surgery (Plastic and Reconstructive Surgery)
45 CASTRO ST, SUITE 121
SAN FRANCISCO, CA 94114
Internal Medicine (Critical Care Medicine)
45 CASTRO ST, 200
SAN FRANCISCO, CA 94114
Internal Medicine
45 CASTRO ST, SUITE 423
SAN FRANCISCO, CA 94114
Internal Medicine
45 CASTRO ST, SUITE 423
SAN FRANCISCO, CA 94114
Ophthalmology
45 CASTRO ST, #309
SAN FRANCISCO, CA 94114
Specialist
45 CASTRO ST, MEDICAL OFFICE BUILDING #410
SAN FRANCISCO, CA 94114
Family Medicine (Adult Medicine)
45 CASTRO ST, SUITE #432
SAN FRANCISCO, CA 94114
Podiatrist (Foot & Ankle Surgery)
45 CASTRO ST, # 337
SAN FRANCISCO, CA 94114
Physician Assistant (Medical)
45 CASTRO ST, SUITE 402
SAN FRANCISCO, CA 94114
Physician Assistant
45 CASTRO ST, 332
SAN FRANCISCO, CA 94114
Occupational Therapist
45 CASTRO ST, SOUTH TOWER LEVEL A, OUTPATIENT REHAB
SAN FRANCISCO, CA 94114
Physician Assistant
45 CASTRO ST, SUITE 421
SAN FRANCISCO, CA 94114
Preventive Medicine (Occupational Medicine)
45 CASTRO ST, SOUTH TOWER, SUITE 160A
SAN FRANCISCO, CA 94114
Internal Medicine (Infectious Disease)
45 CASTRO ST, # 125
SAN FRANCISCO, CA 94114
Physician Assistant (Medical)
45 CASTRO ST, SUITE 332
SAN FRANCISCO, CA 94114
Internal Medicine (Hematology & Oncology)
45 CASTRO ST, SUITE 309
SAN FRANCISCO, CA 94114
Physical Medicine & Rehabilitation
45 CASTRO ST, SUITE 200
SAN FRANCISCO, CA 94114

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1376699181, enumerated as an "individual" on January 25, 2007.

The provider is located at 45 CASTRO ST 423 SAN FRANCISCO, CA 94114 and the phone number is (415) 551-9758.

Physician Assistant with taxonomy code 363AM0700X and a focus in Medical.