Dr. Mahasti Kalantar, MD
- Part D claims, 2024
- 304
- Hospital affiliations
- 2
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 14300 Orchard Pkwy, Westminster, CO 80023
- Practice phone
- Call (720) 627-0000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Kalantar'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. Mahasti Kalantar is an internist in Westminster, Colorado
Dr. Kalantar practices at CommonSpirit - St. Anthony North Hospital in Westminster, Colorado, part of CommonSpirit Health.
Dr. Kalantar's NPI, 1598865313, was assigned on September 22, 2006. Dr. Kalantar holds Colorado license 40768.
- NPI
- 1598865313NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6901959097
- NPI enumeration date
- September 22, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (720) 627-0000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mahasti Kalantar practices at CommonSpirit - St. Anthony North Hospital in Westminster, Colorado
Dr. Kalantar's primary practice is CommonSpirit - St. Anthony North Hospital, at 14300 Orchard Pkwy, Westminster, CO 80023 in Broomfield County. The practice phone is (720) 627-0000.
- CommonSpirit - St. Anthony North Hospital14300 Orchard Pkwy, Westminster, CO 80023 · Broomfield CountyPhone(720) 627-0000
Source: Dmand AI Affiliation Data
Dr. Mahasti Kalantar is affiliated with 2 sites of care and 1 medical group
Dr. Kalantar's primary practice is CommonSpirit - St. Anthony North Hospital in Westminster, Colorado, part of CommonSpirit Health. Dr. Kalantar is also affiliated with Good Samaritan Hospital. The medical group on file is Colorado Permanente Medical Group.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mahasti Kalantar's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kalantar practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| CommonSpirit - St. Anthony North Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across CommonSpirit Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Mahasti Kalantar is one of 1,668 internists in Colorado
Internal medicine is Dr. Kalantar's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Kalantar is licensed in Colorado.
Specialties and state licenses
- Internal medicine, ColoradoPrimary
Internists near Dr. Kalantar
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. Mahasti Kalantar's patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Dr. Kalantar's median patient age at 73, with 53% women.
Dr. Kalantar's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women53%
- Men47%
Source: Dmand AI Patient Panel Data
Dr. Mahasti Kalantar wrote 304 Medicare Part D claims in 2024
In 2024, Dr. Kalantar wrote 304 Medicare Part D claims for 123 patients. 80% of them were for generic drugs. CMS names the drug for 92 of them, across 6 drugs with 11 or more claims each, at $4,417 in total drug cost. In 2023, CMS named 74 claims across 5 drugs.
Dr. Kalantar's Part D claims by kind of drug, 2024
- Generic242 claims80%
- Brand-name and other62 claims20%
Dr. Kalantar'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. Kalantar's Part D claims, 2024
- Opioids5%14 of 304 claims
- Antibiotics12%35 of 304 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: 742024: 9224%
Drugs named by CMS: 6 in 2024, 5 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
How Dr. Mahasti Kalantar takes part in Medicare
Dr. Kalantar accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Sources for Dr. Mahasti Kalantar'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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. Mahasti Kalantar
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. Mahasti Kalantar's NPI number?
Dr. Mahasti Kalantar's NPI number is 1598865313. It was assigned on September 22, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mahasti Kalantar?
Dr. Mahasti Kalantar is an internist in Westminster, Colorado. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mahasti Kalantar practice?
Dr. Kalantar practices at 14300 Orchard Pkwy, Westminster, CO 80023. Dr. Kalantar's primary practice is CommonSpirit - St. Anthony North Hospital in Westminster, Colorado, part of CommonSpirit Health.
What is Dr. Mahasti Kalantar's office phone number?
The practice phone on file for Dr. Kalantar is (720) 627-0000.
What is Dr. Mahasti Kalantar's medical license number?
Dr. Kalantar holds Colorado license 40768.
Which hospitals is Dr. Mahasti Kalantar affiliated with?
Dr. Kalantar practices at CommonSpirit - St. Anthony North Hospital in Westminster, Colorado. Dr. Kalantar is also affiliated with Good Samaritan Hospital.
What medical group is Dr. Mahasti Kalantar part of?
Dr. Kalantar is linked to Colorado Permanente Medical Group.
Does Dr. Mahasti Kalantar accept Medicare?
Yes. CMS lists Dr. Kalantar as accepting Medicare assignment.
What drugs does Dr. Mahasti Kalantar prescribe most?
In 2024 Medicare Part D data, Dr. Kalantar's most prescribed drugs by claims were Pradaxa, Furosemide and Pantoprazole Sodium.
How long has Dr. Mahasti Kalantar been practicing?
Dr. Kalantar graduated from medical school in 1996, 30 years ago.
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