Dr. Christina Tieu, MD
- Medicare services, 2024
- 663
- Medicare patients, 2024
- 362
- Part D claims, 2024
- 2,172
- Hospital affiliations
- 3
- Medical group
- 1
- Practice address
- 2800 10th Ave N, Billings, MT 59101
- Practice phone
- Call (406) 657-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Tieu'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. Christina Tieu is an internist in Billings, Montana
Dr. Tieu practices at Billings Clinic Hospital in Billings, Montana, part of Billings Clinic.
Dr. Tieu's NPI, 1518303221, was assigned on May 21, 2013. Dr. Tieu holds Virginia license 0101262248.
- NPI
- 1518303221NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1557500220
- NPI enumeration date
- May 21, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (406) 657-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Christina Tieu practices at Billings Clinic Hospital in Billings, Montana
Dr. Tieu's primary practice is Billings Clinic Hospital, at 2800 10th Ave N, Billings, MT 59101 in Yellowstone County. The practice phone is (406) 657-4000.
- Billings Clinic Hospital2800 10th Ave N, Billings, MT 59101 · Yellowstone CountyPhone(406) 657-4000
Source: Dmand AI Affiliation Data
Dr. Christina Tieu is affiliated with 8 sites of care and 1 medical group
Dr. Tieu's primary practice is Billings Clinic Hospital in Billings, Montana, part of Billings Clinic. Dr. Tieu is also affiliated with St. Vincent Regional Hospital. The medical group on file is Billings Clinic. Dmand AI also links Dr. Tieu to 1 more hospital, 2 home health agencies, 1 group practice or clinic, 1 hospice and 1 skilled nursing facility, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Christina Tieu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tieu practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Billings Clinic Hospital | Available with a free account |
| +7 more affiliated sites | 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 Billings Clinic and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Christina Tieu is one of 311 internists in Montana
Internal medicine is Dr. Tieu's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Tieu's licenses on file in 3 states: Virginia, Minnesota and Montana.
Specialties and state licenses
- Internal medicine, VirginiaPrimary
- Minnesota license
- Geriatric medicine (internal medicine), Montana
Internists near Dr. Tieu
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. Christina Tieu billed Medicare for 663 services in 2024
CMS data shows 663 Medicare services from Dr. Tieu across 12 procedure codes in 2024, for 362 Medicare patients. Medicare paid $42,305 for them.
Dr. Tieu's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 9032024: 57237%
- Other services
- 2023: 02024: 91
Where Dr. Tieu's Medicare services took place, 2024
- In an office31748%
- In a facility34652%
Dr. Tieu compared with the Montana median for internists, 2024
- Dr. Tieu
- Montana median
- Medicare services
- 663vs 47639% above
- Medicare patients
- 362vs 25343% above
- Part D claims
- 1,749vs 14312.2 times
Medians across 340 internists in Montana with Dmand AI profiles that report each measure.
Dr. Tieu's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Tieu?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Tieu and other internists in Montana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Christina Tieu treated 362 Medicare patients in 2024, average age 82
CMS counts 362 Medicare patients who saw Dr. Tieu in 2024. The largest group is 85 and over, with 153 patients. 71% of them have high blood pressure, and 62% have high cholesterol. 9% are also on Medicaid. Their average risk score is 1.46, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Tieu's median patient age at 81, with 68% women.
Dr. Tieu's Medicare patients by age, 2024
Dr. Tieu's Medicare patients by sex, 2024
- Women24267%
- Men12033%
Chronic conditions among Dr. Tieu's Medicare patients, 2024
- High blood pressure71%
- High cholesterol62%
- Arthritis56%
- Mood disorders40%
- Depression39%
- Anxiety34%
- Atrial fibrillation27%
- Alzheimer's and dementia26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Tieu's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 81
Patient panel by sex, all payers
- Women68%
- Men31%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Christina Tieu wrote 2,172 Medicare Part D claims in 2024
In 2024, Dr. Tieu wrote 2,172 Medicare Part D claims for 288 patients. 86% of them were for generic drugs. CMS names the drug for 1,749 of them, across 54 drugs with 11 or more claims each, at $132,315 in total drug cost. In 2023, CMS named 2,179 claims across 67 drugs.
Dr. Tieu's Part D claims by kind of drug, 2024
- Generic1,872 claims86%
- Brand-name and other300 claims14%
Dr. Tieu'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. Tieu's Part D claims, 2024
- Opioids3%57 of 2,172 claims
- Antibiotics2%50 of 2,172 claims
- Antipsychotics, patients 65 and over1%30 of 2,172 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: 2,1792024: 1,74920%
Drugs named by CMS: 54 in 2024, 67 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
Dr. Christina Tieu offers telehealth to Medicare patients
Dr. Tieu accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Tieu as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Sources for Dr. Christina Tieu'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 services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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. Christina Tieu
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. Christina Tieu's NPI number?
Dr. Christina Tieu's NPI number is 1518303221. It was assigned on May 21, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Christina Tieu?
Dr. Christina Tieu is an internist in Billings, Montana. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Christina Tieu practice?
Dr. Tieu practices at 2800 10th Ave N, Billings, MT 59101. Dr. Tieu's primary practice is Billings Clinic Hospital in Billings, Montana, part of Billings Clinic. Dmand AI also links Dr. Tieu to 1 hospital, 2 home health agencies, 1 group practice or clinic, 1 hospice and 1 skilled nursing facility.
What is Dr. Christina Tieu's office phone number?
The practice phone on file for Dr. Tieu is (406) 657-4000.
What is Dr. Christina Tieu's medical license number?
Dr. Tieu holds Virginia license 0101262248, one of the licenses on file in 3 states.
Which states has Dr. Christina Tieu been licensed in?
Dmand AI has state licenses on file for Dr. Tieu in Virginia, Minnesota and Montana.
Which hospitals is Dr. Christina Tieu affiliated with?
Dr. Tieu practices at Billings Clinic Hospital in Billings, Montana. Dr. Tieu is also affiliated with St. Vincent Regional Hospital. Dmand AI links Dr. Tieu to 1 more hospital.
What medical group is Dr. Christina Tieu part of?
Dr. Tieu is linked to Billings Clinic.
Does Dr. Christina Tieu accept Medicare?
Yes. CMS data shows Dr. Tieu billed Medicare for 663 services in 2024, and Dr. Tieu accepts Medicare assignment.
Does Dr. Christina Tieu offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Tieu as offering telehealth services.
Show 4 more questionsShow fewer questions
How many Medicare patients does Dr. Christina Tieu see?
CMS counts 362 Medicare patients who saw Dr. Tieu in 2024, with an average age of 82.
What services does Dr. Christina Tieu bill to Medicare?
In 2024, Dr. Tieu's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99215) and medicare service (G2211).
What drugs does Dr. Christina Tieu prescribe most?
In 2024 Medicare Part D data, Dr. Tieu's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Eliquis.
How long has Dr. Christina Tieu been practicing?
Dr. Tieu graduated from medical school in 2013, 13 years ago.
Selling to internal medicine practices?
See internists in Montana by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card