MARISSA JANE CASILLO FNP
NPI 1972251817
Nurse Practitioner - Family in Foxboro, MA
NPI Status: Active since March 10, 2022
Contact Information
18 WASHINGTON ST
FOXBORO, MA
ZIP 02035
Phone: (781) 551-5812
Some details in this NPI profile have been updated in the NPI registry within the last 30 days.
- Individual
- Female
- Nurse Practitioner
- Family
- Accepts Insurance
- PECOS Enrolled
About MARISSA CASILLO
This page provides the complete NPI Profile along with additional information for Marissa Casillo, a provider established in Foxboro, Massachusetts with a medical specialization in Nurse Practitioner, focusing in family . The healthcare provider is registered in the NPI registry with number 1972251817 assigned on March 2022. The practitioner's primary taxonomy code is 363LF0000X with license number RN2273512 (MA). The provider is registered as an individual and her NPI record was last updated June 2026.
- NPI
- 1972251817
- Provider Name
- MARISSA JANE CASILLO FNP
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 18 WASHINGTON ST FOXBORO, MA 02035
- Location Phone
- (781) 551-5812
- Mailing Address
- 18 WASHINGTON ST FOXBORO, MA 02035
- Mailing Phone
- (781) 551-5812
- Is Sole Proprietor?
- No
- Enumeration Date
- 03-10-2022
- Last Update Date
- 06-12-2026
- Code Navigator
A nurse practitioner (NP) like Marissa Casillo 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 Family
- Taxonomy Code
- 363LF0000X
- Type
- Physician Assistants & Advanced Practice Nursing Providers
- License No.
- RN2273512
- License State
- MA
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) |
|---|---|---|---|---|
| 1 | 363LF0000X | Physician Assistants & Advanced Practice Nursing Providers | Nurse Practitioner | F03210086 (MA) |
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
- Anthem Bronze Access Blue New England HMO 6000/20%/8000 w/HSA - HMO
- Anthem Bronze Access Blue New England HMO 7000/50%/8000 w/HSA - HMO
- Anthem Bronze Access Blue New England HMO 7500/30%/10000 Value - HMO
- Anthem Bronze Access Blue New England HMO 8500/50%/9200 - HMO
- Anthem Gold Access Blue New England HMO 1000/20%/7500 - HMO
- Anthem Gold Access Blue New England HMO 2000/0%/6500 RxD - HMO
- Anthem Gold Access Blue New England HMO 2000/10%/4600 w/HSA - HMO
- Anthem Gold Access Blue New England HMO 2000/10%/7500 - HMO
- Anthem Gold Access Blue New England HMO 2000/20%/4600 w/HSA - HMO
- Anthem Gold Access Blue New England HMO 3000/0%/7500 RxD - HMO
- Anthem Gold Access Blue New England HMO 500/30%/9000 - HMO
- Anthem Platinum Access Blue New England HMO 250/10%/3500 - HMO
- Anthem Silver Access Blue New England HMO 2500/30%/10000 Value - HMO
- Anthem Silver Access Blue New England HMO 3000/30%/9000 Value - HMO
- Anthem Silver Access Blue New England HMO 3500/20%/10000 - HMO
- Anthem Silver Access Blue New England HMO 3500/20%/7250 w/HSA - HMO
- Anthem Silver Access Blue New England HMO 4000/0%/9000 - HMO
- Anthem Silver Access Blue New England HMO 4000/0%/9000 RxD - HMO
- Anthem Silver Access Blue New England HMO 4000/10%/7250 w/HSA - HMO
- Anthem Silver Access Blue New England HMO 4000/20%/8500 - HMO
*Please verify directly with this provider to make sure your insurance plan is currently accepted.
Medicare Participation & PECOS Enrollment Status
Marissa Casillo is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.
What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.
Is the provider registered in PECOS? Yes
Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes
Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes
Eligible to Order or Refer a Home Health Agency (HHA): Yes
Eligible to Order or Refer Power Mobility Devices: Yes
Physician Visit Costs
The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.
For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.
The prices below reflect the costs for new and established patients in the 02035 ZIP code area.
New Patients Visit Costs *
The most utilized procedure code for new patients office visits is 99203
- Average New Patient Price $97.64
- Minimum New Patient Price $63.72
- Maximum New Patient Price $189.86
- Average New Patient Copayment $24.41
- Minimum New Patient Copayment $15.93
- Maximum New Patient Copayment $47.46
Established Patients Visit Costs *
The most utilized procedure code for established patients office visits is 99214
- Average Established Patient Price $111.18
- Minimum Established Patient Price $21.07
- Maximum Established Patient Price $155.29
- Average Established Patient Copayment $27.79
- Minimum Established Patient Copayment $5.26
- Maximum Established Patient Copayment $38.82
* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.
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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 1972251817, we treat the final digit (7) 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 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 7).
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 63 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 16 providers are registered at the same or a nearby location.
FOXBORO, MA 02035
FOXBORO, MA 02035
FOXBORO, MA 02035
FOXBORO, MA 02035
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1972251817, enumerated as an "individual" on March 10, 2022.
The provider is located at 18 WASHINGTON ST FOXBORO, MA 02035 and the phone number is (781) 551-5812.
Nurse Practitioner with taxonomy code 363LF0000X and a focus in Family.
The provider might be accepting Accepts: Anthem Blue Cross and Blue Shield. Please consult your insurance carrier or call the provider to verify.
