DR. MARCUS FERRONE PHARMD, BCNSP
NPI 1700974482
Pharmacist - Nutrition Support in San Francisco, CA

NPI Status: Active since October 10, 2006

Contact Information

UNIVERSITY OF CALIFORNIA SAN FRANCISCO
BOX 0622, C-152
SAN FRANCISCO, CA
ZIP 94143
Phone: (415) 502-8151

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  • Individual
  • Male
  • Pharmacist
  • Nutrition Support

About MARCUS FERRONE

This page provides the complete NPI Profile along with additional information for Marcus Ferrone, a provider established in San Francisco, California with a medical specialization in Pharmacist, focusing in nutrition support . The healthcare provider is registered in the NPI registry with number 1700974482 assigned on October 2006. The practitioner's primary taxonomy code is 1835N1003X with license number 55191 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1700974482
Provider Name
DR. MARCUS FERRONE PHARMD, BCNSP
Gender
Male
Entity Type
Individual
Location Address
UNIVERSITY OF CALIFORNIA SAN FRANCISCO BOX 0622, C-152 SAN FRANCISCO, CA 94143
Location Phone
(415) 502-8151
Mailing Address
7 EXCELSIOR LN APARTMENT #10 SAUSALITO, CA 94965
Mailing Phone
(415) 686-9811
Is Sole Proprietor?
No
Enumeration Date
10-10-2006
Last Update Date
09-11-2025
Code Navigator

A pharmacist like Marcus Ferrone fills prescription medications, verifying instructions from physicians and offers expertise in the safe use of prescriptions. Pharmacists instruct patients on how to take a prescribed medicine and educate patients about potential side effects. Pharmacists might also conduct health and wellness screenings, provide immunizations, oversee the medications given to patients, and provide advice on healthy lifestyles.

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

Pharmacist Nutrition Support

Taxonomy Code
1835N1003X
Type
Pharmacy Service Providers
License No.
55191
License State
CA
Taxonomy Description
A licensed pharmacist who has demonstrated specialized knowledge and skill in maintenance and/or restoration of optimal nutritional status, designing and modifying treatment according to patient needs.

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)
1183500000XPharmacy Service Providers

Pharmacist

55191 (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 1700974482, we treat the final digit (2) 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 68. The final step is to find the difference between that total and the next multiple of ten (70 - 68 = 2).

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
0
Doubled → 0
Pos 4
0
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
7
Unchanged
Pos 7
4
Doubled → 8
Pos 8
4
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
Check
2
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 0 → 0 9 → 18 → 9 4 → 8 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 0 + 0 + 1 + 8 + 7 + 8 + 4 + 1 + 6 + 24 = 68

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

The next multiple of ten after 68 is 70. The difference is the calculated check digit.

70 - 68 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1700974482.

Other Providers at the Same Location


The following 16 providers are registered at the same or a nearby location.

Internal Medicine (Rheumatology)
UNIVERSITY OF CALIFORNIA SAN FRANCISCO, 533 PARNASSUS AVENUE, U-384
SAN FRANCISCO, CA 94143
Pharmacist
UNIVERSITY OF CALIFORNIA SAN FRANCISCO, 521 PARNASSUS AVE., C-152
SAN FRANCISCO, CA 94143
Orthopaedic Surgery (Pediatric Orthopaedic Surgery)
UNIVERSITY OF CALIFORNIA SAN FRANCISCO, DEPT OF ORTHO SURGERY, 500 PARNASSUS AVENUE, MU320W
SAN FRANCISCO, CA 94143
Internal Medicine
UNIVERSITY OF CALIFORNIA SAN FRANCISCO, 505 PARNASSUS MOFFITT M1286 MAILSTOP 1270
SAN FRANCISCO, CA 94143
Surgery
UNIVERSITY OF CALIFORNIA SAN FRANCISCO, 500 PARNASSUS AVENUE, SUITE MU-405
SAN FRANCISCO, CA 94143
Clinic/Center (Ophthalmologic Surgery)
UNIVERSITY OF CALIFORNIA SAN FRANCISCO, DEPT OF OPHTHALMOLOGY; 10 KORET WAY RM 301
SAN FRANCISCO, CA 94143
Psychiatry & Neurology (Neurology)
UNIVERSITY OF CALIFORNIA SAN FRANCISCO, 505 PARNASSUS AVE., BOX 0114
SAN FRANCISCO, CA 94143
Student in an Organized Health Care Education/Training Program
UNIVERSITY OF CALIFORNIA SAN FRANCISCO, 513 PARNASSUS AVENUE, BOX 0427
SAN FRANCISCO, CA 94143
Internal Medicine (Nephrology)
UNIVERSITY OF CALIFORNIA SAN FRANCISCO, 521 PARNASSUS AVENUE, C443, BOX 0532
SAN FRANCISCO, CA 94143
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
UNIVERSITY OF CALIFORNIA SAN FRANCISCO, 533 PARNASSUS AVE, ROOM U-585
SAN FRANCISCO, CA 94143
Student in an Organized Health Care Education/Training Program
UNIVERSITY OF CALIFORNIA SAN FRANCISCO, 550-16TH STREET, MISSION HALL 4TH FLOOR
SAN FRANCISCO, CA 94143
Pediatrics
UNIVERSITY OF CALIFORNIA SAN FRANCISCO, 400 PARNASSUS AVE
SAN FRANCISCO, CA 94143
Radiology (Diagnostic Radiology)
UNIVERSITY OF CALIFORNIA SAN FRANCISCO, 505 PARNASSUS, M-391
SAN FRANCISCO, CA 94143
Internal Medicine (Gastroenterology)
UNIVERSITY OF CALIFORNIA SAN FRANCISCO, 513 PARNASSUS AVENUE, MED SCI 357
SAN FRANCISCO, CA 94143
Internal Medicine (Nephrology)
UNIVERSITY OF CALIFORNIA SAN FRANCISCO, BOX 0532
SAN FRANCISCO, CA 94143
Radiology (Diagnostic Radiology)
UNIVERSITY OF CALIFORNIA SAN FRANCISCO, 505 PARNASSUS, ROOM 372, BOX 0628
SAN FRANCISCO, CA 94143

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1700974482, enumerated as an "individual" on October 10, 2006.

The provider is located at UNIVERSITY OF CALIFORNIA SAN FRANCISCO BOX 0622, C-152 SAN FRANCISCO, CA 94143 and the phone number is (415) 502-8151.

Pharmacist with taxonomy code 1835N1003X and a focus in Nutrition Support.