ROBERT S. FERRETTI
NPI 1861574428
Orthopaedic Surgery in Greenbrae, CA

NPI Status: Active since October 20, 2006

Contact Information

599 SIR FRANCIS DRAKE BLVD
302
GREENBRAE, CA
ZIP 94904
Phone: (415) 292-9528
Fax: (415) 461-4971

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  • Organization
  • Orthopaedic Surgery

About ROBERT S. FERRETTI

This page provides the complete NPI Profile along with additional information for Robert S. Ferretti, a provider established in Greenbrae, California operating as a Orthopaedic Surgery. The healthcare provider is registered in the NPI registry with number 1861574428 assigned on October 2006. The practitioner's primary taxonomy code is 207X00000X with license number G18512 (CA). The provider is registered as an organization and their NPI record was last updated 6 years ago. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Dr. Robert S. Ferretti M. D. (President)

NPI
1861574428
Provider Name
ROBERT S. FERRETTI
Entity Type
Organization
Location Address
599 SIR FRANCIS DRAKE BLVD 302 GREENBRAE, CA 94904
Location Phone
(415) 292-9528
Location Fax
(415) 461-4971
Mailing Address
599 SIR FRANCIS DRAKE BLVD 302 GREENBRAE, CA 94904
Mailing Phone
(415) 292-9528
Mailing Fax
(415) 461-4971
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
10-20-2006
Last Update Date
08-22-2020
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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

Orthopaedic Surgery

Taxonomy Code
207X00000X
Type
Allopathic & Osteopathic Physicians
License No.
G18512
License State
CA
Taxonomy Description
An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.

Group Taxonomy 193400000X SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

DR. ROBERT S. FERRETTI M. D.

Authorized Official Title
PRESIDENT
Authorized Official Phone
(415) 292-9528

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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 1861574428, we treat the final digit (8) 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 8).

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
8
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
1
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
7
Unchanged
Pos 7
4
Doubled → 8
Pos 8
4
Unchanged
Pos 9
2
Doubled → 4
Check
8
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 6 → 12 → 3 5 → 10 → 1 4 → 8 2 → 4

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 1 + 2 + 1 + 1 + 0 + 7 + 8 + 4 + 4 + 24 = 62

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

The next multiple of ten after 62 is 70. The difference is the calculated check digit.

70 - 62 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1861574428.

Other Providers at the Same Location


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

Pediatrics
599 SIR FRANCIS DRAKE BLVD, SUITE 102
GREENBRAE, CA 94904
Orthopaedic Surgery
599 SIR FRANCIS DRAKE BLVD, #302
GREENBRAE, CA 94904
General Practice
599 SIR FRANCIS DRAKE BLVD, STE. # 203
GREENBRAE, CA 94904
Internal Medicine (Rheumatology)
599 SIR FRANCIS DRAKE BLVD, SUITE 201
GREENBRAE, CA 94904
Dentist (General Practice)
599 SIR FRANCIS DRAKE BLVD, SUITE 306
GREENBRAE, CA 94904
Internal Medicine (Rheumatology)
599 SIR FRANCIS DRAKE BLVD, #201
GREENBRAE, CA 94904
Obstetrics & Gynecology
599 SIR FRANCIS DRAKE BLVD, #202
GREENBRAE, CA 94904
Obstetrics & Gynecology
599 SIR FRANCIS DRAKE BLVD, #202
GRENNBRAE, CA 94904
Chiropractor
599 SIR FRANCIS DRAKE BLVD, SUITE 304
GREENBRAE, CA 94904
Internal Medicine (Rheumatology)
599 SIR FRANCIS DRAKE BLVD, SUITE 201
GREENBRAE, CA 94904
Obstetrics & Gynecology
599 SIR FRANCIS DRAKE BLVD, SUITE 301
GREENBRAE, CA 94904
Podiatrist (Foot & Ankle Surgery)
599 SIR FRANCIS DRAKE BLVD, SUITE 207
GREENBRAE, CA 94904
Obstetrics & Gynecology
599 SIR FRANCIS DRAKE BLVD, SUITE 301
GREENBRAE, CA 94904
Dentist (General Practice)
599 SIR FRANCIS DRAKE BLVD, SUITE 306
GREENBRAE, CA 94904
Obstetrics & Gynecology
599 SIR FRANCIS DRAKE BLVD, SUITE 301
GREENBRAE, CA 94904
Internal Medicine (Endocrinology, Diabetes & Metabolism)
599 SIR FRANCIS DRAKE BLVD, SUITE 305
GREENBRAE, CA 94904
Psychiatry & Neurology (Neurology)
599 SIR FRANCIS DRAKE BLVD, SUITE 206
GREENBRAE, CA 94904
Psychiatry & Neurology (Psychiatry)
599 SIR FRANCIS DRAKE BLVD, STE 304
GREENBRAE, CA 94904
Specialist
599 SIR FRANCIS DRAKE BLVD, STE 304
GREENBRAE, CA 94904
Obstetrics & Gynecology
599 SIR FRANCIS DRAKE BLVD, SUITE 202
GREENBRAE, CA 94904

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1861574428, enumerated as an "organization" on October 20, 2006.

The provider is located at 599 SIR FRANCIS DRAKE BLVD 302 GREENBRAE, CA 94904 and the phone number is (415) 292-9528.

Orthopaedic Surgery with taxonomy code 207X00000X.