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DR. NICHOLAS GREGORY CALICA MD
NPI 1891797593
Internal Medicine in Las Vegas, NV

Active since August 11, 2005PECOS Enrolled
6355 S BUFFALO DR FL 3, LAS VEGAS, NV 89113(702) 952-9171(702) 952-9170 Get Directions Write a Review

NPPES record last updated: November 1, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Nicholas Gregory Calica Md NPPES

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

DR. NICHOLAS GREGORY CALICA MD (NPI 1891797593) is an individual internal medicine provider in Las Vegas, Nevada, licensed in Nevada (8250) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS and maintains a secondary practice location in Las Vegas.

NPPES Registry Identity

NPI1891797593
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. NICHOLAS GREGORY CALICACredential: MD
Location Address6355 S BUFFALO DR FL 3Las Vegas, NV 89113-2133
Mailing Address6355 S Buffalo Dr Fl 3Las Vegas, NV 89113-2133 · (702) 216-3346 · Fax (702) 671-6883
Phone(702) 952-9171
Fax(702) 952-9170
Sole ProprietorNo
Enumeration DateAugust 11, 2005
Last NPPES UpdateNovember 1, 2022
NPPES CertifiedNovember 1, 2022
✔ NPI 1891797593 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in NV · 8250
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedHospitalistTaxonomy 208M00000X · License 8250 (NV)
6355 S BUFFALO DR FL 3, Las Vegas, NV 89113
Open in Google Maps ↗

Secondary Practice Location 1

Location 11000 S Rainbow Blvd, Ste. ALas Vegas, NV 89145-6231 · Phone (702) 464-8866 · Fax (702) 671-6851

Other Identifiers 1

Medicaid1891797593NV

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Nicholas Gregory Calica Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignment

Medicare enrollment records show Nicholas Calica reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Intermountain Medical Holdings Nevada Inc
15 mi
Internal Medicine
595 W LAKE MEAD PKWY
Henderson, NV 89015
  • Reassigned Medicare billing, Nevada enrollment
  • 521 clinicians in this Medicare group
NPI 1245997279 (702) 566-5500

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 89113 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
$131.25 typical visit price
range $57.07 – $173.24
Typical copayment $32.81 (range $14.26 – $43.31)
Most-billed visit code 99204
Established Patient
$100.60 typical visit price
range $18.27 – $140.96
Typical copayment $25.15 (range $4.56 – $35.24)
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.

NITTU SINGH MD
Family Medicine
6355 S BUFFALO DR FL 3
LAS VEGAS, NV 89113
Clark County (702) 952-9171
MA CELESTINA LOPEZ AGUILAR APRN
Nurse Practitioner
6355 S BUFFALO DR FL 3
LAS VEGAS, NV 89113
Clark County (702) 479-4881
MICHAEL H. NGUYEN D.O.
Family Medicine (Geriatric Medicine)
6355 S BUFFALO DR FL 3
LAS VEGAS, NV 89113
Clark County (702) 952-9171
MARIA D. C. PEREZ-MONTES MD
Obstetrics & Gynecology
6355 S BUFFALO DR FL 3
LAS VEGAS, NV 89113
Clark County (702) 255-3547
KATHERINE HINTON WHITMIRE APRN
Nurse Practitioner
6355 S BUFFALO DR FL 3
LAS VEGAS, NV 89113
Clark County (702) 479-4881
DR. LOURDES RUCELA PASCUA ADA M.D.
Family Medicine
6355 S BUFFALO DR FL 3
LAS VEGAS, NV 89113
Clark County (702) 216-3346
REBEKAH ANN HALEY NP-C
Nurse Practitioner (Adult Health)
6355 S BUFFALO DR FL 3
LAS VEGAS, NV 89113
Clark County (702) 479-4881
ALLISON FAIN DAVIS APRN
Nurse Practitioner (Adult Health)
6355 S BUFFALO DR FL 3
LAS VEGAS, NV 89113
Clark County (702) 479-4881

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 Nicholas Calica's NPI number?

The NPI number for Nicholas Calica is 1891797593. It was assigned to this individual provider in the NPPES registry on August 11, 2005.

Where is Nicholas Calica located?

Nicholas Calica practices at 6355 S Buffalo Dr Fl 3, Las Vegas, NV 89113. The listed phone number is (702) 952-9171.

What is Nicholas Calica's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Nicholas Calica enrolled in Medicare?

Yes. Nicholas Calica is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Nicholas Calica's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nicholas Calica reassigns Medicare benefits to Intermountain Medical Holdings Nevada Inc (Henderson, NV). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Nicholas Calica's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Nicholas Calica was last updated on November 1, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.