MR. COREY JOHN GRAHN NP-C
NPI 1336474212
Nurse Practitioner in Ionia, MI
NPI Status: Active since October 09, 2009
Contact Information
1342 W MAIN ST
IONIA, MI
ZIP 48846
Phone: (616) 527-2500
- Individual
- Male
- Nurse Practitioner
About COREY GRAHN
This page provides the complete NPI Profile along with additional information for Corey Grahn, a provider established in Ionia, Michigan with a medical specialization in Nurse Practitioner. The healthcare provider is registered in the NPI registry with number 1336474212 assigned on October 2009. The practitioner's primary taxonomy code is 363L00000X with license number 4704177461 (MI). The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1336474212
- Provider Name
- MR. COREY JOHN GRAHN NP-C
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 1342 W MAIN ST IONIA, MI 48846
- Location Phone
- (616) 527-2500
- Mailing Address
- 1728 W BLUEWATER HWY IONIA, MI 48846
- Mailing Phone
- (616) 527-2500
- Is Sole Proprietor?
- No
- Enumeration Date
- 10-09-2009
- Last Update Date
- 02-14-2025
- Code Navigator
A nurse practitioner (NP) like Corey Grahn is an experienced registered nurse with a master’s or doctoral degree and advanced clinical training. Nurse practitioners can work in many different specialties including primary care, pediatrics, cardiology, emergency, women’s health, oncology or geriatrics. Nurse practitioners provide services like physical exams, order laboratory tests, manage diseases, write prescriptions, 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
Nurse Practitioner
- Taxonomy Code
- 363L00000X
- Type
- Physician Assistants & Advanced Practice Nursing Providers
- License No.
- 4704177461
- License State
- MI
- Taxonomy Description
- (1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
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NPI Validation Check Digit Calculation
The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.
| Start with the original NPI number, the last digit is the check digit and is not used in the calculation. | |||||||||
| 1 | 3 | 3 | 6 | 4 | 7 | 4 | 2 | 1 | 2 |
| Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
| 2 | 3 | 6 | 6 | 8 | 7 | 8 | 2 | 2 | |
| Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
| 2 + 3 + 6 + 6 + 8 + 7 + 8 + 2 + 2 + 24 = 68 | |||||||||
| Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
| 70 - 68 = 2 | 2 | ||||||||
The NPI number 1336474212 is valid because the calculated check digit 2 using the Luhn validation algorithm matches the last digit of the original NPI number.
Other Providers at the Same Location
The following provider is registered at the same or nearby location.
MR. BRENDAN JAMES SHERRY PA-C
Physician Assistant
1342 W MAIN ST
IONIA, MI
ZIP 48846
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1336474212, enumerated as an "individual" on October 09, 2009.
The provider is located at 1342 W MAIN ST IONIA, MI 48846 and the phone number is (616) 527-2500.
Nurse Practitioner with taxonomy code 363L00000X.
