Dr. Stephen Calvert , MD
Internal Medicine • Tulsa, OK
8115 S Memorial Dr
Tulsa, OK 741334331
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. Stephen Calvert is listed in NPPES under Internal Medicine.
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NPI assigned on March 16, 2006; this date does not establish years in practice.
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Published CMS data list 179 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99214 — Established patient outpatient office visit: 77 service units.
- 99213 — Established patient outpatient office visit: 45 service units.
- 83036 — Hemoglobin a1c level: 24 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 5 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 547 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – 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 — 69 prescription fills, including refills.
- Metformin Hcl — 39 prescription fills, including refills.
- Losartan Potassium — 37 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 27 records in the table · Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 85% of clinicians listed under Internal Medicine in Tulsa, OK (2024, 196 clinicians with data). Median for this group: 690. Middle half: 397 to 1,313.
Fewer Medicare Part B services than 85% of clinicians listed under Internal Medicine in Oklahoma (2024, 608 clinicians with data). Median for this group: 786. Middle half: 370 to 1,552.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 689 in 2020 to 179 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
8115 S Memorial Dr
Tulsa, OK 741334331
CMS Doctors and Clinicians lists 1 group name: Omni Medical Group Inc. 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
University Of Oklahoma College Of Medicine
2001
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
98 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $19,015 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $13,439 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
30-day fills
1,226 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
$17,619 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 – by Provider and Drug, 2024.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019–2025.
Years since graduation
25 years (graduated 2001)
CMS Doctors and Clinicians data list 2001 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
2006
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, “Does your provider accept Medicare as full payment?”
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. Calvert 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. Calvert 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 B services
Fewer Medicare Part B services than 85% of clinicians listed under Internal Medicine in Tulsa, OK (2024, 196 clinicians with data). Median for this group: 690. Middle half: 397 to 1,313.
Fewer Medicare Part B services than 85% of clinicians listed under Internal Medicine in Oklahoma (2024, 608 clinicians with data). Median for this group: 786. Middle half: 370 to 1,552.
Medicare-allowed amount
A lower Medicare-allowed amount than 85% of clinicians listed under Internal Medicine in Tulsa, OK (2024, 196 clinicians with data). Median for this group: $67,394. Middle half: $41,187 to $101,502.
A lower Medicare-allowed amount than 80% of clinicians listed under Internal Medicine in Oklahoma (2024, 608 clinicians with data). Median for this group: $72,879. Middle half: $34,595 to $122,743.
Paid by Medicare
A lower Medicare payment amount than 85% of clinicians listed under Internal Medicine in Tulsa, OK (2024, 196 clinicians with data). Median for this group: $50,257. Middle half: $28,716 to $78,800.
A lower Medicare payment amount than 85% of clinicians listed under Internal Medicine in Oklahoma (2024, 608 clinicians with data). Median for this group: $54,503. Middle half: $25,299 to $94,383.
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.
Close to the middle for 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 B services
Medicare Part B services decreased 74% from 689 in 2020 to 179 in 2024.
- 2020: 689
- 2021: 625
- 2022: 77
- 2023: 32
- 2024: 179
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Medicare-allowed amount
Medicare-allowed amount decreased 63% from $51,401 in 2020 to $19,015 in 2024.
- 2020: $51,401
- 2021: $45,377
- 2022: $5,792
- 2023: $2,862
- 2024: $19,015
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Paid by Medicare
Paid by Medicare decreased 66% from $39,342 in 2020 to $13,439 in 2024.
- 2020: $39,342
- 2021: $35,493
- 2022: $4,319
- 2023: $2,291
- 2024: $13,439
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 458% from 98 in 2016 to 547 in 2024.
- 2016: 98
- 2017: 11
- 2018: 13
- 2019: 13
- 2024: 547
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30-day fills
30-day fills increased 1054% from 106 in 2016 to 1,226 in 2024.
- 2016: 106
- 2017: 12
- 2018: 14
- 2019: 13
- 2024: 1,226
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Part D drug cost
Part D drug cost went from $534 in 2016 to $17,619 in 2024.
- 2016: $534
- 2017: $36
- 2018: $54
- 2019: $190
- 2024: $17,619
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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77 | 44 | $222.00 | $123.42 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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45 | 27 | $151.00 | $87.26 |
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83036
Hemoglobin a1c level
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24 | 21 | $31.00 | $9.52 |
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
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22 | 22 | $342.00 | $160.61 |
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99223
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
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11 | 11 | $1389.00 | $165.77 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
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 | 69 | 5,120 | $611.37 | 27 |
| Metformin Hcl | Metformin Hcl | 39 | 2,554 | $282.11 | 19 |
| Losartan Potassium | Losartan Potassium | 37 | 2,740 | $308.05 | 15 |
| Trazodone Hcl | Trazodone Hcl | 36 | 1,740 | $242.40 | — |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 26 | 2,250 | $670.98 | 13 |
| Atorvastatin Calcium | Atorvastatin Calcium | 25 | 2,150 | $524.58 | 15 |
| Lisinopril | Lisinopril | 23 | 1,579 | $156.82 | 12 |
| Gabapentin | Gabapentin | 21 | 1,080 | $343.21 | — |
| Alendronate Sodium | Alendronate Sodium | 19 | 1,428 | $349.64 | — |
| Metoprolol Tartrate | Metoprolol Tartrate | 18 | 1,500 | $165.29 | — |
| Pantoprazole Sodium | Pantoprazole Sodium | 18 | 1,185 | $305.54 | 11 |
| Omeprazole | Omeprazole | 17 | 1,290 | $409.25 | — |
| Jardiance | Empagliflozin | 16 | 570 | $10,831.31 | — |
| Prednisone | Prednisone | 14 | 310 | $22.96 | 11 |
| Hydrochlorothiazide | Hydrochlorothiazide | 14 | 1,260 | $70.57 | — |
| Levothyroxine Sodium | Levothyroxine Sodium | 14 | 1,260 | $119.75 | — |
| Potassium Chloride | Potassium Chloride | 14 | 826 | $173.04 | — |
| Bupropion Hcl Sr | Bupropion Hcl | 14 | 990 | $519.75 | — |
| Propranolol Hcl | Propranolol Hcl | 14 | 900 | $242.01 | — |
| Duloxetine Hcl | Duloxetine Hcl | 14 | 480 | $126.50 | — |
| Sertraline Hcl | Sertraline Hcl | 13 | 990 | $71.57 | — |
| Carvedilol | Carvedilol | 13 | 705 | $126.29 | — |
| Ondansetron Odt | Ondansetron | 13 | 454 | $204.60 | — |
| Metoprolol Succinate | Metoprolol Succinate | 12 | 960 | $83.33 | — |
| Paroxetine Hcl | Paroxetine Hcl | 12 | 660 | $83.63 | — |
(top 25 shown)
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: 2024-08-26NUCC 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.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20050830000817
OK
9234175969
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
Omni Medical Group Inc
8115 S Memorial Dr, Tulsa, OK 741334331
Phone: 9182546315
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Counselor
Master of Arts, Master of Social Work
Family Medicine
Doctor of Osteopathic Medicine (D.O.)
Nurse Practitioner - Family
Advanced Practice Registered Nurse - Certified Nurse Practitioner
Nurse Practitioner - Family
Advanced Practice Registered Nurse - Certified Nurse Practitioner
Physician Assistant - Medical
Physician Assistant
Family Medicine
Doctor of Osteopathic Medicine (D.O.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 8115 S MEMORIAL DR, TULSA, OK 741334331 (Tel: 9182546315)
Registered at 8115 S MEMORIAL DR, TULSA, OK 741334331 (Tel: 9182546315)
Internal Medicine (license number reported to NPPES: OK 22446)
NPI status registered as active in NPPES database
Registered at 1515 N HARVARD AVE, STE E, TULSA, OK 741154957 (Tel: 9188326049)
Registered at 1705 E 19TH ST, 302, TULSA, OK 741045405 (Tel: 9187487585)
Recorded as STEPHEN CALVERT, M.D.
Internal Medicine (license number reported to NPPES: OK 22446)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine Providers in Tulsa
- Dr. Justin Chronister, DO
- Dr. Maria Ramos, DO
- Dr. Janis Finer, MD
- Dr. Kristy Sundene, MD
- Dr. Vishal Mundra, MBBS
- Dr. Ahmad Mismar, MD
Mailing Address
8115 S Memorial Dr
Tulsa, OK 741334331
Phone: 9182546315