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DIANA LAURA CASTELLANOS PA
NPI 1811856198
Physician Assistant in West Hartford, CT

Active since January 21, 2026PECOS EnrolledAccepts Medicare Assignment
342 N MAIN ST STE 350, WEST HARTFORD, CT 06117(860) 296-4022(860) 772-0095 Get Directions Write a Review

NPPES record last updated: February 27, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Diana Laura Castellanos Pa NPPES

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

DIANA LAURA CASTELLANOS PA (NPI 1811856198) is an individual physician assistant in West Hartford, Connecticut, licensed in Connecticut (7544) and active in the NPI registry since January 2026. She is enrolled in Medicare PECOS and is a graduate of Yale University School Of Medicine (2025).

NPPES Registry Identity

NPI1811856198
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameDIANA LAURA CASTELLANOSCredential: PA
Location Address342 N MAIN ST STE 350West Hartford, CT 06117-2530
Mailing Address30 Jordan LaneWethersfield, CT 06109-1278 · (860) 845-0905 · Fax (860) 913-2587
Phone(860) 296-4022
Fax(860) 772-0095
Sole ProprietorNo
Medical School CMSYale University School Of MedicineGraduated 2025
Enumeration DateJanuary 21, 2026
Last NPPES UpdateFebruary 27, 2026
NPPES CertifiedFebruary 27, 2026
✔ NPI 1811856198 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License✔ Licensed in CT · 7544
Definition
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.
342 N MAIN ST STE 350, West Hartford, CT 06117
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Diana Laura Castellanos Pa 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 ID7517448988
PECOS Enrollment IDI20260224001966
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06117 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
$75.55 typical visit price
range $19.76 – $149.26
Typical copayment $18.88 (range $4.94 – $37.31)
Most-billed visit code 99213
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 3

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

AUDREY KINNEAR OWEIMRIN PA-C
Physician Assistant
342 N MAIN ST STE 350
WEST HARTFORD, CT 06117
Capitol Planning Region (860) 296-4022
JOAN L RISHEL PA-C
Physician Assistant
342 N MAIN ST STE 350
WEST HARTFORD, CT 06117
Capitol Planning Region (860) 296-4022
SAMUEL WERNER D.O.
Family Medicine
342 N MAIN ST STE 350
WEST HARTFORD, CT 06117
Capitol Planning Region (860) 331-3016

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Diana Castellanos's NPI number?

The NPI number for Diana Castellanos is 1811856198. It was assigned to this individual provider in the NPPES registry on January 21, 2026.

Where is Diana Castellanos located?

Diana Castellanos practices at 342 N Main St Ste 350, West Hartford, CT 06117. The listed phone number is (860) 296-4022.

What is Diana Castellanos's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Diana Castellanos enrolled in Medicare?

Yes. Diana Castellanos is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Diana Castellanos was last updated on February 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.