CASSANDRA Y GRYCZEWSKI ACAGNP
NPI 1851796551
Nurse Practitioner - Adult Health in Wethersfield, CT

Q: What is Cassandra Gryczewski's NPI number?

The NPI number for Cassandra Gryczewski is 1851796551. It was assigned to this individual provider in the NPPES registry on October 24, 2014.

Q: What is Cassandra Gryczewski's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.

Active since October 24, 2014PECOS EnrolledAccepts Medicare Assignment

1260 SILAS DEANE HWY, WETHERSFIELD, CT 06109(860) 258-2375(860) 571-6805 Get Directions Write a Review

NPPES record last updated: May 21, 2018. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Cassandra Y Gryczewski Acagnp NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CASSANDRA Y GRYCZEWSKI ACAGNP (NPI 1851796551) is an individual adult health provider in Wethersfield, Connecticut, licensed in Connecticut (005962) and active in the NPI registry since October 2014. She is enrolled in Medicare PECOS and is a graduate of University Of Connecticut School Of Medicine (2014).

NPPES Registry Identity

NPI1851796551

Entity TypeIndividualFemale

Primary Taxonomy363LA2200X

Provider Legal NameCASSANDRA Y GRYCZEWSKICredential: ACAGNP

Location Address1260 SILAS DEANE HWYWethersfield, CT 06109

Mailing Address2110 Silas Deane HwyRocky Hill, CT 06067-2313 · (860) 258-3470

Phone(860) 258-2375

Fax(860) 571-6805

Sole ProprietorNo

Medical School CMSUniversity Of Connecticut School Of MedicineGraduated 2014

Enumeration DateOctober 24, 2014

Last NPPES UpdateMay 21, 2018

✔ NPI 1851796551 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyNurse Practitioner · Adult HealthPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LA2200X

License✔ Licensed in CT · 005962

Also ListedNurse PractitionerTaxonomy 363L00000X · License 005962 (CT)

Also ListedNurse Practitioner · Acute CareTaxonomy 363LA2100X · License 005962 (CT)

1260 SILAS DEANE HWY, Wethersfield, CT 06109

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Cassandra Y Gryczewski Acagnp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7618294646

PECOS Enrollment IDI20150331001887

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Cassandra Gryczewski reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Starling Physicians, PLLC

0.1 mi

Internal Medicine

1210 SILAS DEANE HWY
Wethersfield, CT 06109

Reassigned Medicare billing, Connecticut enrollment
468 clinicians in this Medicare group

NPI 1306779905 (860) 832-4666

Hartford Hospital

4.8 mi

Surgery

80 SEYMOUR ST, HARTFORD HOSPITAL PROFESSIONAL SERVICES
Hartford, CT 06102

Reassigned Medicare billing, Connecticut enrollment
Also billed through NPI 1770696643 (Connecticut)
1,333 clinicians in this Medicare group

NPI 1407806391 (860) 545-7602

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

96 services39 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

42 services18 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

41 services33 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06109 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$93.86 typical visit price

range $60.82 – $183.10

Typical copayment $23.46 (range $15.20 – $45.77)

Most-billed visit code 99203

Established Patient

$106.68 typical visit price

range $19.76 – $149.26

Typical copayment $26.67 (range $4.94 – $37.31)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

LISA MICHELE HALPERN APRN

Nurse Practitioner (Gerontology)

1260 SILAS DEANE HWY, HARTFORD HOSPITAL NEUROLOGY DEPT
WETHERSFIELD, CT 06109

Capitol Planning Region (860) 696-2820

KIMBERLY KEEGAN NP-C

Nurse Practitioner