Dr. Christopher Vontungeln , DO
Internal Medicine β’ Tulsa, OK
1923 S Utica Ave
Tulsa, OK 741046520
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. Christopher Vontungeln is listed in NPPES under Internal Medicine.
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NPI assigned on April 1, 2022; this date does not establish years in practice.
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Published CMS data list 483 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Amlodipine Besylate β 46 prescription fills, including refills.
- Atorvastatin Calcium β 45 prescription fills, including refills.
- Losartan Potassium β 41 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 24 records in the table Β· Guide: How to read Medicare Part D prescriber data
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Close to the middle for Part D prescriptions among clinicians listed under Internal Medicine in Tulsa, OK (2024, 196 clinicians with data). Median for this group: 739. Middle half: 98 to 5,882.
Close to the middle for Part D prescriptions among clinicians listed under Internal Medicine in Oklahoma (2024, 661 clinicians with data). Median for this group: 626. Middle half: 89 to 5,646.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part D prescriptions went from 147 in 2023 to 483 in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2023β2024.
Practice Location & Contact Primary Location
1923 S Utica Ave
Tulsa, OK 741046520
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Columbia, MO. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 1 group name: Usacs Observation Medicine Services Of Oklahoma, Llc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
2022
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
822 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$16,077 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024.
Open Payments general payments, program year 2024
All general payments: $34.70 across 2 records.
By nature of payment
- Food and Beverage: $34.70 across 2 records.
Reporting-company totals
- AIMMUNE THERAPEUTICS, INC.: $17.89 across 1 record.
- Amgen Inc.: $16.81 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2024 (published June 30, 2026).
Years since graduation
4 years (graduated 2022)
CMS Doctors and Clinicians data list 2022 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2022
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, βDoes your provider accept Medicare as full payment?β
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Vontungeln has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Vontungeln as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Tulsa and Oklahoma
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Internal Medicine in Tulsa, OK (2024, 196 clinicians with data). Median for this group: 739. Middle half: 98 to 5,882.
Close to the middle for clinicians listed under Internal Medicine in Oklahoma (2024, 661 clinicians with data). Median for this group: 626. Middle half: 89 to 5,646.
Part D drug cost
A lower Part D drug cost than 60% of clinicians listed under Internal Medicine in Tulsa, OK (2024, 196 clinicians with data). Median for this group: $94,990. Middle half: $3,786 to $659,546.
A lower Part D drug cost than 60% of clinicians listed under Internal Medicine in Oklahoma (2024, 661 clinicians with data). Median for this group: $76,711. Middle half: $1,967 to $572,569.
308 active clinicians are listed under Internal Medicine with a practice address in Tulsa, OK (1,116 in Oklahoma).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Tulsa
20.8% of these 308 clinicians have the CMS telehealth indicator.
67.2% of these 308 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 229% from 147 in 2023 to 483 in 2024.
- 2023: 147
- 2024: 483
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30-day fills
30-day fills increased 189% from 284 in 2023 to 822 in 2024.
- 2023: 284
- 2024: 822
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Part D drug cost
Part D drug cost increased 770% from $1,847 in 2023 to $16,077 in 2024.
- 2023: $1,847
- 2024: $16,077
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Industry payments (Open Payments)
CMS data for industry payments (Open Payments) are available for 2024 only.
Sources: CMS Medicare Part D Prescribers (2024), CMS Open Payments (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2024 (payments made January 1 β December 31, 2024): fewer than 11 records totaling $34.70.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| AIMMUNE THERAPEUTICS, INC. |
Food and Beverage
In-kind items and services
|
VOWST | General | $17.89 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
|
Repatha | General | $16.81 |
Source: CMS Open Payments, program year 2024, released June 30, 2026.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Amlodipine Besylate | Amlodipine Besylate | 46 | 2,846 | $228.53 | 13 |
| Atorvastatin Calcium | Atorvastatin Calcium | 45 | 2,692 | $391.00 | 13 |
| Losartan Potassium | Losartan Potassium | 41 | 2,526 | $278.19 | 15 |
| Furosemide | Furosemide | 32 | 1,416 | $143.20 | β |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 28 | 709 | $409.37 | β |
| Allopurinol | Allopurinol | 25 | 700 | $100.89 | β |
| Nitroglycerin | Nitroglycerin | 22 | 168 | $202.56 | β |
| Omeprazole | Omeprazole | 21 | 978 | $132.91 | β |
| Methocarbamol | Methocarbamol | 19 | 711 | $448.43 | β |
| Gabapentin | Gabapentin | 16 | 696 | $195.62 | β |
| Pantoprazole Sodium | Pantoprazole Sodium | 16 | 822 | $65.04 | β |
| Mirtazapine | Mirtazapine | 16 | 728 | $219.11 | β |
| Farxiga | Dapagliflozin Propanediol | 16 | 576 | $11,124.93 | β |
| Lisinopril | Lisinopril | 15 | 1,350 | $99.67 | β |
| Carvedilol | Carvedilol | 15 | 544 | $55.98 | β |
| Hydralazine Hcl | Hydralazine Hcl | 14 | 394 | $51.58 | β |
| Fluticasone Propionate | Fluticasone Propionate | 13 | 570 | $250.04 | β |
| Lactulose | Lactulose | 13 | 416 | $90.22 | β |
| Alendronate Sodium | Alendronate Sodium | 12 | 834 | $65.52 | β |
| Tamsulosin Hcl | Tamsulosin Hcl | 12 | 1,080 | $138.71 | β |
| Trazodone Hcl | Trazodone Hcl | 12 | 440 | $54.48 | β |
| Clonidine | Clonidine | 12 | 336 | $1,105.08 | β |
| Metoprolol Tartrate | Metoprolol Tartrate | 11 | 930 | $66.69 | β |
| Levothyroxine Sodium | Levothyroxine Sodium | 11 | 750 | $159.50 | β |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-06-13NUCC Taxonomy Code: 207R00000X
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.
NUCC Taxonomy Code: 207R00000X
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.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20250828004716
OK
2466833140
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Usacs Observation Medicine Services Of Oklahoma, Llc
1923 S Utica Ave, Tulsa, OK 741046520
Phone: 9187443131
Secondary Practice Locations
1 Hospital Dr
Columbia, MO 652121000
Phone: 5738841606
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Practitioner - Family
Advanced Practice Registered Nurse
Nurse Practitioner - Acute Care
Adult-Gerontology Acute Care Nurse Practitioner (Board Certified)
Emergency Medicine
Doctor of Osteopathic Medicine (D.O.)
Physician Assistant - Medical
Physician Assistant (Certified)
Internal Medicine
Doctor of Medicine (M.D.)
Nurse Practitioner - Acute Care
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 1923 S UTICA AVE, TULSA, OK 741046520 (Tel: 9187443131)
Registered at 1923 S UTICA AVE, TULSA, OK 741046520 (Tel: 9187443131)
Internal Medicine (license number reported to NPPES: OK 8963)
NPI status registered as active in NPPES database
Registered at 1 HOSPITAL DR, COLUMBIA, MO 652121000 (Tel: 5738824141)
Registered at 1 HOSPITAL DR, COLUMBIA, MO 652121000 (Tel: 5738824141)
Recorded as CHRISTOPHER VONTUNGELN, DO
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine Providers in Tulsa
- Dr. Mercedes Zano, MD
- Dr. Richard Marple, MD
- Dr. Dana Morrel, MD
- Dr. Temitayo Oyekan, DO
- Dr. Krystina Beaman, MD
- Dr. Ashesh Bhakta, DO
Mailing Address
1923 S Utica Ave
Tulsa, OK 741046520
Phone: 9187443131