DR. JOAN SUSAN DORFMAN M.D.
NPI 1215935630
Pediatrics in San Francisco, CA

NPI Status: Active since July 09, 2005

Contact Information

575 MARKET ST
SUITE 300
SAN FRANCISCO, CA
ZIP 94105
Phone: (415) 904-9676

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  • Individual
  • Female
  • Pediatrics

About JOAN DORFMAN

This page provides the complete NPI Profile along with additional information for Joan Dorfman, a pediatrician established in San Francisco, California with a medical specialization in Pediatrics. The healthcare provider is registered in the NPI registry with number 1215935630 assigned on July 2005. The practitioner's primary taxonomy code is 208000000X with license number G021476 (CA). The provider is registered as an individual and her NPI record was last updated 19 years ago.

NPI
1215935630
Provider Name
DR. JOAN SUSAN DORFMAN M.D.
Gender
Female
Entity Type
Individual
Location Address
575 MARKET ST SUITE 300 SAN FRANCISCO, CA 94105
Location Phone
(415) 904-9676
Mailing Address
1305 HENRY ST BERKELEY, CA 94709
Mailing Phone
(510) 527-4998
Is Sole Proprietor?
Yes
Enumeration Date
07-09-2005
Last Update Date
07-08-2007
Code Navigator

A pediatrician like Joan Dorfman is a physician who has completed a pediatric residency and is board-certified or board-eligible in a pediatric specialty. Pediatric care providers are trained to care for newborns, infants, children and adolescents. A pediatrician could perform physical exams, manage vaccinations, monitor development milestones, diagnose illnesses, infections, injuries or other health problems, 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

Pediatrics

Taxonomy Code
208000000X
Type
Allopathic & Osteopathic Physicians
License No.
G021476
License State
CA
Taxonomy Description
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

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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 1215935630, 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 60. The final step is to find the difference between that total and the next multiple of ten (60 - 60 = 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
1
Doubled → 2
Pos 2
2
Unchanged
Pos 3
1
Doubled → 2
Pos 4
5
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
3
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
6
Unchanged
Pos 9
3
Doubled → 6
Check
0
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 1 → 2 9 → 18 → 9 5 → 10 → 1 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 2 + 5 + 1 + 8 + 3 + 1 + 0 + 6 + 6 + 24 = 60

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

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

60 - 60 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1215935630.

Other Providers at the Same Location


The following 4 providers are registered at the same or a nearby location.

Family Medicine
575 MARKET ST, STE 400
SAN FRANCISCO, CA 94105
Psychiatry & Neurology (Psychosomatic Medicine)
575 MARKET ST
SAN FRANCISCO, CA 94105
Registered Nurse (Pediatrics)
575 MARKET ST
SAN FRANCISCO, CA 94105
Case Management
575 MARKET ST, SUITE 300
SAN FRANCISCO, CA 94105

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1215935630, enumerated as an "individual" on July 09, 2005.

The provider is located at 575 MARKET ST SUITE 300 SAN FRANCISCO, CA 94105 and the phone number is (415) 904-9676.

Pediatrics with taxonomy code 208000000X.