Dr. Nicholas Gregory Calica, MD
- Part D claims, 2024
- 1,086
- Hospital affiliations
- 1
- Industry payments
- $267
- Medical group
- 1
- State license
- 1
- Practice address
- 1050 West Galleria Drive, Henderson, NV 89011
- Practice phone
- Call (702) 963-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Calica's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Nicholas Gregory Calica is an internist in Henderson, Nevada
Dr. Calica practices at Henderson Hospital in Henderson, Nevada, part of Universal Health Services.
Dr. Calica's NPI, 1891797593, was assigned on August 11, 2005. Dr. Calica graduated from University of California, Geffen School of Medicine in 1985. Dr. Calica holds Nevada license 8250.
- NPI
- 1891797593NPI Registry (opens in a new tab)
- NPI enumeration date
- August 11, 2005
- NPI status
- Active
- Practice phone
- (702) 963-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Nicholas Gregory Calica practices at Henderson Hospital in Henderson, Nevada
Dr. Calica's primary practice is Henderson Hospital, at 1050 West Galleria Drive, Henderson, NV 89011 in Clark County. The practice phone is (702) 963-7000.
- Henderson Hospital1050 West Galleria Drive, Henderson, NV 89011 · Clark CountyPhone(702) 963-7000
Source: Dmand AI Affiliation Data
Dr. Nicholas Gregory Calica is affiliated with 2 sites of care and 1 medical group
Dr. Calica's primary practice is Henderson Hospital in Henderson, Nevada, part of Universal Health Services. The medical group on file is Intermountain Health. Dmand AI also links Dr. Calica to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Nicholas Gregory Calica's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Calica practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Henderson Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Nicholas Gregory Calica is one of 1,019 internists in Nevada
Internal medicine is Dr. Calica's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Calica is licensed in Nevada.
Specialties and state licenses
- Internal medicine, NevadaPrimary
Internists near Dr. Calica
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Nicholas Gregory Calica's patients have a median age of 77
Across all payers, Dmand AI patient panel data puts Dr. Calica's median patient age at 77, with 57% women.
Dr. Calica's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women57%
- Men42%
Source: Dmand AI Patient Panel Data
Dr. Nicholas Gregory Calica wrote 1,086 Medicare Part D claims in 2024
In 2024, Dr. Calica wrote 1,086 Medicare Part D claims for 423 patients. 92% of them were for generic drugs. CMS names the drug for 791 of them, across 29 drugs with 11 or more claims each, at $28,090 in total drug cost. In 2023, CMS named 775 claims across 28 drugs.
Dr. Calica's Part D claims by kind of drug, 2024
- Generic1,003 claims92%
- Brand-name and other83 claims8%
Dr. Calica's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Calica's Part D claims, 2024
- Opioids10%111 of 1,086 claims
- Antibiotics18%197 of 1,086 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 7752024: 7912%
Drugs named by CMS: 29 in 2024, 28 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Nicholas Gregory Calica received $267 in industry payments from 2016 to 2022
CMS Open Payments shows 6 general payments to Dr. Calica from 6 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $100.
General payments to Dr. Calica by program year, 2016 to 2022
Companies that paid Dr. Calica the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Nicholas Gregory Calica graduated from University of California, Geffen School of Medicine
Dr. Calica graduated from University of California, Geffen School of Medicine in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Nicholas Gregory Calica's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Nicholas Gregory Calica
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Nicholas Gregory Calica's NPI number?
Dr. Nicholas Gregory Calica's NPI number is 1891797593. It was assigned on August 11, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Nicholas Gregory Calica?
Dr. Nicholas Gregory Calica is an internist in Henderson, Nevada. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Nicholas Gregory Calica practice?
Dr. Calica practices at 1050 West Galleria Drive, Henderson, NV 89011. Dr. Calica's primary practice is Henderson Hospital in Henderson, Nevada, part of Universal Health Services. Dmand AI also links Dr. Calica to 1 group practice or clinic.
What is Dr. Nicholas Gregory Calica's office phone number?
The practice phone on file for Dr. Calica is (702) 963-7000.
What is Dr. Nicholas Gregory Calica's medical license number?
Dr. Calica holds Nevada license 8250.
Which hospitals is Dr. Nicholas Gregory Calica affiliated with?
Dr. Calica practices at Henderson Hospital in Henderson, Nevada.
What medical group is Dr. Nicholas Gregory Calica part of?
Dr. Calica is linked to Intermountain Health.
Where did Dr. Nicholas Gregory Calica go to medical school?
Dr. Calica graduated from University of California, Geffen School of Medicine in 1985.
What drugs does Dr. Nicholas Gregory Calica prescribe most?
In 2024 Medicare Part D data, Dr. Calica's most prescribed drugs by claims were Metoprolol Tartrate, Cefdinir and Hydrocodone-Acetaminophen.
Has Dr. Nicholas Gregory Calica received payments from drug or device companies?
CMS Open Payments shows $267 in general payments to Dr. Calica from 6 companies from 2016 to 2022. The largest total came from Abbvie Inc.
How long has Dr. Nicholas Gregory Calica been practicing?
Dr. Calica graduated from medical school in 1985, 41 years ago.
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