CHALAN WHELAN PA-C
NPI 1528984440
Physician Assistant in Amherst, MA
NPI Status: Active since June 25, 2026
Contact Information
17 RESEARCH DR
AMHERST, MA
ZIP 01002
Phone: (413) 549-8400
This NPI profile has been added to the NPI registry within the last 30 days.
- Individual
- Female
- Physician Assistant
About CHALAN WHELAN
This page provides the complete NPI Profile along with additional information for Chalan Whelan, a primary care provider established in Amherst, Massachusetts with a medical specialization in Physician Assistant. The healthcare provider is registered in the NPI registry with number 1528984440 assigned on June 2026. The practitioner's primary taxonomy code is 363A00000X. The provider is registered as an individual and her NPI record was last updated June 2026.
- NPI
- 1528984440
- Provider Name
- CHALAN WHELAN PA-C
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 17 RESEARCH DR AMHERST, MA 01002
- Location Phone
- (413) 549-8400
- Mailing Address
- 18 PETZ RD STAFFORD SPRINGS, CT 06076
- Mailing Phone
- (860) 849-5832
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 06-25-2026
- Last Update Date
- 06-25-2026
A primary care provider (PCP) like Chalan Whelan sees people with common medical problems. The primary care provider might be a doctor, physician assistant, nurse practitioner or clinic that are usually involved in your long-term care. A PCP might provide preventive care, treat common medical conditions, identify urgent medical problems and refer you to specialists when necessary. Primary care is usually provided in an outpatient facility but if you are admitted to a hospital your PCP may assist in your care. The most common medical conditions seen by primary care providers are: hypertension, upper respiratory tract infections, depression or anxiety, back pain, arthritis, dermatitis, diabetes, urinary tract infections, 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
Physician Assistant
- Taxonomy Code
- 363A00000X
- Type
- Physician Assistants & Advanced Practice Nursing Providers
- Taxonomy Description
- A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
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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 1528984440, 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 80. The final step is to find the difference between that total and the next multiple of ten (80 - 80 = 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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 80 is 80. The difference is the calculated check digit.
Other Providers at the Same Location
The following 12 providers are registered at the same or a nearby location.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1528984440, enumerated as an "individual" on June 25, 2026.
The provider is located at 17 RESEARCH DR AMHERST, MA 01002 and the phone number is (413) 549-8400.
Physician Assistant with taxonomy code 363A00000X.
