DR. CHARLES R HARRISON MD
NPI 1245340223
Obstetrics & Gynecology - Gynecologic Oncology in Grand Rapids, MI

NPI Status: Active since August 30, 2006

Contact Information

145 MICHIGAN ST NE
STE 6300
GRAND RAPIDS, MI
ZIP 49503
Phone: (616) 486-6000

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  • Individual
  • Male
  • Obstetrics & Gynecology
  • Gynecologic Oncology

About CHARLES HARRISON

This page provides the complete NPI Profile along with additional information for Charles Harrison, a women's health care provider established in Grand Rapids, Michigan with a medical specialization in Obstetrics & Gynecology, focusing in gynecologic oncology . The healthcare provider is registered in the NPI registry with number 1245340223 assigned on August 2006. The practitioner's primary taxonomy code is 207VX0201X with license number CH070071 (MI). The provider is registered as an individual and his NPI record was last updated 5 years ago.

NPI
1245340223
Provider Name
DR. CHARLES R HARRISON MD
Gender
Male
Entity Type
Individual
Location Address
145 MICHIGAN ST NE STE 6300 GRAND RAPIDS, MI 49503
Location Phone
(616) 486-6000
Mailing Address
100 MICHIGAN ST NE # MC845 GRAND RAPIDS, MI 49503
Mailing Phone
(616) 486-6790
Is Sole Proprietor?
No
Enumeration Date
08-30-2006
Last Update Date
07-01-2021
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Women's health care providers like Charles Harrison treat and diagnose diseases and conditions that affect a woman's physical and emotional health. Women's health professionals come from a variety of different specialties, including obstetrician/gynecologists, general surgeons, perinatologists, physician assistants, nurse practitioners or nurse midwives. A women's health provider might help you with family planning, breast care, pregnancy and child birth, osteoporosis, menopause, heart disease, 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

Obstetrics & Gynecology Gynecologic Oncology

Taxonomy Code
207VX0201X
Type
Allopathic & Osteopathic Physicians
License No.
CH070071
License State
MI
Taxonomy Description
An obstetrician/gynecologist who provides consultation and comprehensive management of patients with gynecologic cancer, including those diagnostic and therapeutic procedures necessary for the total care of the patient with gynecologic cancer and resulting complications.

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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 1245340223, we treat the final digit (3) 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 57. The final step is to find the difference between that total and the next multiple of ten (60 - 57 = 3).

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
4
Doubled → 8
Pos 4
5
Unchanged
Pos 5
3
Doubled → 6
Pos 6
4
Unchanged
Pos 7
0
Doubled → 0
Pos 8
2
Unchanged
Pos 9
2
Doubled → 4
Check
3
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 4 → 8 3 → 6 0 → 0 2 → 4

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 8 + 5 + 6 + 4 + 0 + 2 + 4 + 24 = 57

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

The next multiple of ten after 57 is 60. The difference is the calculated check digit.

60 - 57 = 3
This NPI is valid
The calculated check digit is 3, which matches the last digit of 1245340223.

Other Providers at the Same Location


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

Physician Assistant (Medical)
145 MICHIGAN ST NE, SUITE 3100
GRAND RAPIDS, MI 49503
Pharmacist
145 MICHIGAN ST NE, SUITE 3100
GRAND RAPIDS, MI 49503
Social Worker (Clinical)
145 MICHIGAN ST NE, SUITE 3100
GRAND RAPIDS, MI 49503
Genetic Counselor, MS
145 MICHIGAN ST NE, SUITE 6100
GRAND RAPIDS, MI 49503
Nurse Practitioner
145 MICHIGAN ST NE, SUITE 5500
GRAND RAPIDS, MI 49503
Genetic Counselor, MS
145 MICHIGAN ST NE
GRAND RAPIDS, MI 49503
Surgery (Surgical Oncology)
145 MICHIGAN ST NE, SUITE 5500
GRAND RAPIDS, MI 49503
Social Worker
145 MICHIGAN ST NE, SUITE 5200
GRAND RAPIDS, MI 49503
Emergency Medicine (Hospice and Palliative Medicine)
145 MICHIGAN ST NE, SUITE 4400
GRAND RAPIDS, MI 49503
Nurse Practitioner
145 MICHIGAN ST NE, SPECTRUM HEALTH HOSPITAL
GRAND RAPIDS, MI 49503
Physician Assistant (Medical)
145 MICHIGAN ST NE, SUITE 3100
GRAND RAPIDS, MI 49503
Surgery
145 MICHIGAN ST NE
GRAND RAPIDS, MI 49503
Nurse Practitioner
145 MICHIGAN ST NE, SUITE 5200
GRAND RAPIDS, MI 49503
Obstetrics & Gynecology (Gynecologic Oncology)
145 MICHIGAN ST NE, SUITE 6300
GRAND RAPIDS, MI 49503
Physician Assistant
145 MICHIGAN ST NE, SUITE 3410
GRAND RAPIDS, MI 49503
Physician Assistant (Surgical)
145 MICHIGAN ST NE, SUITE 5500
GRAND RAPIDS, MI 49503
Internal Medicine (Hematology & Oncology)
145 MICHIGAN ST NE, SUITE 5200
GRAND RAPIDS, MI 49503
Internal Medicine (Hematology & Oncology)
145 MICHIGAN ST NE, SUITE 3100
GRAND RAPIDS, MI 49503
Internal Medicine (Medical Oncology)
145 MICHIGAN ST NE, SUITE 3100
GRAND RAPIDS, MI 49503
Internal Medicine (Hematology & Oncology)
145 MICHIGAN ST NE, SUITE 3100
GRAND RAPIDS, MI 49503

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1245340223, enumerated as an "individual" on August 30, 2006.

The provider is located at 145 MICHIGAN ST NE STE 6300 GRAND RAPIDS, MI 49503 and the phone number is (616) 486-6000.

Obstetrics & Gynecology with taxonomy code 207VX0201X and a focus in Gynecologic Oncology.