Dr. Catherine Leigh Gaffney , DO
Internal Medicine • Tulsa, OK
9228 S Mingo Rd, Suite 103
Tulsa, OK 741335718
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
-
Dr. Catherine Gaffney is listed in NPPES under Internal Medicine.
-
NPI assigned on May 20, 2006; this date does not establish years in practice.
-
Published CMS data list 621 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.
-
Published Part B service records, 2024:
- 99214 — Established patient outpatient office visit: 416 service units.
- 99213 — Established patient outpatient office visit: 73 service units.
- G0008 — Administration of influenza virus vaccine: 48 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 6 records in the table · Guide: How to read Medicare Part B data
-
Published CMS data list 4,504 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.
-
Published Part D records, 2024:
- Levothyroxine Sodium — 230 prescription fills, including refills.
- Mounjaro (Tirzepatide) — 210 prescription fills, including refills.
- Atorvastatin Calcium — 197 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 99 records in the table · Guide: How to read Medicare Part D prescriber data
-
Close to the middle for Medicare Part B services among clinicians listed under Internal Medicine in Tulsa, OK (2024, 196 clinicians with data). Median for this group: 690. Middle half: 397 to 1,313.
Close to the middle for Medicare Part B services among 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.
-
Medicare Part B services went from 722 in 2020 to 621 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
9228 S Mingo Rd
Suite 103
Tulsa, OK 741335718
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Ahs Oklahoma Physician Group 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
Oklahoma State University College Of Osteopathic Medicine
1996
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
199 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 $65,669 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 $46,171 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
9,582 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
$754,610 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.
Open Payments general payments, program year 2025
All general payments: $1,941.30 across 94 records.
By nature of payment
- Food and Beverage: $1,812.22 across 90 records.
- Education: $129.08 across 4 records.
Reporting-company totals (3 largest of 17)
- Novo Nordisk Inc: $506.63 across 18 records.
- AstraZeneca Pharmaceuticals LP: $208.67 across 10 records.
- Otsuka America Pharmaceutical, Inc.: $204.67 across 13 records.
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 2025 (published June 30, 2026).
Years since graduation
30 years (graduated 1996)
CMS Doctors and Clinicians data list 1996 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?”
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Gaffney 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. Gaffney 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
Close to the middle for clinicians listed under Internal Medicine in Tulsa, OK (2024, 196 clinicians with data). Median for this group: 690. Middle half: 397 to 1,313.
Close to the middle for 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
Close to the middle for 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.
Close to the middle for 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
Close to the middle for 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.
Close to the middle for 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
More Part D prescriptions than 65% of clinicians listed under Internal Medicine in Tulsa, OK (2024, 196 clinicians with data). Median for this group: 739. Middle half: 98 to 5,882.
More Part D prescriptions than 70% of 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 higher Part D drug cost than 80% 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 higher Part D drug cost than 80% 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.
-
Medicare Part B services
Medicare Part B services decreased 14% from 722 in 2020 to 621 in 2024.
- 2020: 722
- 2021: 787
- 2022: 717
- 2023: 699
- 2024: 621
-
Medicare-allowed amount
Medicare-allowed amount increased 40% from $46,907 in 2020 to $65,669 in 2024.
- 2020: $46,907
- 2021: $58,996
- 2022: $53,362
- 2023: $53,201
- 2024: $65,669
-
Paid by Medicare
Paid by Medicare increased 50% from $30,752 in 2020 to $46,171 in 2024.
- 2020: $30,752
- 2021: $39,312
- 2022: $34,082
- 2023: $35,201
- 2024: $46,171
-
Medicare Part D prescriptions
Medicare Part D prescriptions increased 43% from 3,143 in 2020 to 4,504 in 2024.
- 2020: 3,143
- 2021: 3,318
- 2022: 3,997
- 2023: 4,235
- 2024: 4,504
-
30-day fills
30-day fills increased 46% from 6,566 in 2020 to 9,582 in 2024.
- 2020: 6,566
- 2021: 7,005
- 2022: 8,337
- 2023: 8,916
- 2024: 9,582
-
Part D drug cost
Part D drug cost increased 101% from $374,637 in 2020 to $754,610 in 2024.
- 2020: $374,637
- 2021: $409,449
- 2022: $500,208
- 2023: $755,167
- 2024: $754,610
-
Industry payments (Open Payments)
Industry payments (Open Payments) went from $197.59 in 2021 to $1,941.30 in 2025.
- 2021: $197.59
- 2022: $2,064.80
- 2023: $1,589.58
- 2024: $1,754.53
- 2025: $1,941.30
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · 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 2025 (payments made January 1 – December 31, 2025): 94 records totaling $1,941.30.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Boehringer Ingelheim Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
JARDIANCE | General | $113.97 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
|
Wegovy | General | $110.93 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
|
Wegovy | General | $63.56 |
| Boston Scientific Corporation |
Food and Beverage
In-kind items and services
|
WATCHMAN FLX | General | $35.87 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
|
FARXIGA | General | $34.33 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
|
FARXIGA | General | $32.47 |
| Novo Nordisk Inc |
Education
In-kind items and services
|
Wegovy | General | $32.27 |
| Novo Nordisk Inc |
Education
In-kind items and services
|
Wegovy | General | $32.27 |
| Novo Nordisk Inc |
Education
In-kind items and services
|
Wegovy | General | $32.27 |
| Novo Nordisk Inc |
Education
In-kind items and services
|
Wegovy | General | $32.27 |
| Otsuka America Pharmaceutical, Inc. |
Food and Beverage
In-kind items and services
|
REXULTI | General | $29.99 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
|
— | General | $29.33 |
| Eisai Inc. |
Food and Beverage
In-kind items and services
|
Leqembi | General | $29.18 |
| Eisai Inc. |
Food and Beverage
In-kind items and services
|
Leqembi | General | $25.40 |
| Otsuka America Pharmaceutical, Inc. |
Food and Beverage
In-kind items and services
|
REXULTI | General | $24.98 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
|
NURTEC ODT | General | $24.78 |
| Sumitomo Pharma America, Inc. |
Food and Beverage
In-kind items and services
|
GEMTESA | General | $24.65 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
|
Ozempic | General | $24.60 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
|
ELIQUIS | General | $24.57 |
| Otsuka America Pharmaceutical, Inc. |
Food and Beverage
In-kind items and services
|
REXULTI | General | $23.84 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
UBRELVY | General | $22.03 |
| Takeda Pharmaceuticals U.S.A., Inc. |
Food and Beverage
In-kind items and services
|
TRINTELLIX | General | $21.46 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
UBRELVY | General | $21.41 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
|
AIRSUPRA | General | $21.12 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
|
Ozempic | General | $20.83 |
(top 25 shown)
Source: CMS Open Payments, program year 2025, released June 30, 2026.
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 |
|---|---|---|---|---|
|
99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
|
416 | 167 | $224.00 | $118.41 |
|
99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
|
73 | 58 | $158.00 | $85.25 |
|
G0008
Administration of influenza virus vaccine
|
48 | 47 | $51.00 | $30.07 |
|
90653
Influenza vaccine, inactivated
|
41 | 41 | $131.00 | $81.82 |
|
G0439
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
|
32 | 32 | $241.06 | $115.05 |
|
99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
|
11 | 11 | $344.00 | $155.21 |
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 |
|---|---|---|---|---|---|
| Levothyroxine Sodium | Levothyroxine Sodium | 230 | 18,665 | $2,311.68 | 61 |
| Mounjaro | Tirzepatide | 210 | 6,442 | $238,448.46 | 26 |
| Atorvastatin Calcium | Atorvastatin Calcium | 197 | 17,176 | $2,078.60 | 54 |
| Amlodipine Besylate | Amlodipine Besylate | 158 | 13,650 | $1,390.23 | 46 |
| Gabapentin | Gabapentin | 154 | 7,750 | $2,566.02 | 33 |
| Losartan Potassium | Losartan Potassium | 143 | 11,909 | $1,542.28 | 39 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 124 | 10,310 | $2,111.39 | 33 |
| Ozempic | Semaglutide | 119 | 4,340 | $143,767.82 | 19 |
| Famotidine | Famotidine | 109 | 6,290 | $1,392.12 | 24 |
| Trazodone Hcl | Trazodone Hcl | 106 | 6,660 | $615.56 | 22 |
| Lisinopril | Lisinopril | 95 | 8,610 | $1,021.67 | 23 |
| Eliquis | Apixaban | 84 | 3,952 | $76,393.24 | 15 |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 80 | 1,870 | $974.55 | 24 |
| Pantoprazole Sodium | Pantoprazole Sodium | 79 | 6,236 | $982.70 | 21 |
| Escitalopram Oxalate | Escitalopram Oxalate | 78 | 6,060 | $1,014.51 | 20 |
| Omeprazole | Omeprazole | 77 | 5,750 | $1,018.91 | 25 |
| Potassium Chloride | Potassium Chloride | 75 | 5,686 | $1,490.07 | 21 |
| Jardiance | Empagliflozin | 74 | 4,129 | $81,506.88 | 16 |
| Carvedilol | Carvedilol | 70 | 4,193 | $540.37 | 16 |
| Memantine Hcl | Memantine Hcl | 68 | 4,290 | $2,284.25 | 17 |
| Sertraline Hcl | Sertraline Hcl | 65 | 5,065 | $897.38 | 19 |
| Metoprolol Tartrate | Metoprolol Tartrate | 64 | 4,915 | $506.55 | 15 |
| Donepezil Hcl | Donepezil Hcl | 61 | 3,786 | $704.45 | 15 |
| Zolpidem Tartrate | Zolpidem Tartrate | 61 | 2,010 | $689.38 | — |
| Clonazepam | Clonazepam | 60 | 1,580 | $475.43 | — |
(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
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.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20050312000042
OK
8224087648
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
Ahs Oklahoma Physician Group Llc
20 E 34th St, Sand Springs, OK 740634001
Phone: 9182459675
Ahs Oklahoma Physician Group Llc
9001 S 101st E Ave, Tulsa, OK 741335796
Ahs Oklahoma Physician Group Llc
9001 S 101st E Ave, Tulsa, OK 741335797
Phone: 9183925470
Ahs Oklahoma Physician Group Llc
10512 N 110th E Ave, Owasso, OK 740556638
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
Advanced Practice Registered Nurse
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Osteopathic Medicine (D.O.)
Career & Practice History
NPI enumerated May 20, 2006.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Internal Medicine Providers in Tulsa
- Tori Spurlock
- Dr. Gerard Mcnulty, MD
- Dr. David Traub, MD
- Dr. Joseph Moore, MD
- Dr. Divya Akula, DO
- Dr. Rabia Ali, MD
Mailing Address
9228 S Mingo Rd, Suite 103
Tulsa, OK 741335718
Phone: 9183927575