Dr. John W Mccarter , MD
Internal Medicine • Norman, OK
500 E Robinson St Ste 2400
Norman, OK 730716684
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
-
Dr. John Mccarter is listed in NPPES under Internal Medicine.
-
NPI assigned on November 22, 2005; this date does not establish years in practice.
-
Published CMS data list 1,693 Original Medicare Part B services in 2020.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020. Published rows only; this is not a quality measure.
-
Published Part B service records, 2020:
- 99213 — Established patient outpatient office visit: 750 service units.
- G0442 — Annual alcohol misuse screening, 5 to 15 minutes: 145 service units.
- 99497 — Advance care planning: 144 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2019 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2020). CPT notice
See all 15 records in the table · Guide: How to read Medicare Part B data
-
Published CMS data list 789 Medicare Part D prescriptions, including refills, in 2021.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2021. Published rows only; this is not a quality measure.
-
Published Part D records, 2021:
- Levothyroxine Sodium — 85 prescription fills, including refills.
- Atorvastatin Calcium — 75 prescription fills, including refills.
- Omeprazole — 61 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2021. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 24 records in the table · Guide: How to read Medicare Part D prescriber data
-
Medicare Part B services went from 2,574 in 2017 to 1,693 in 2020.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2017–2020.
Practice Location & Contact Primary Location
500 E Robinson St Ste 2400
Norman, OK 730716684
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $108,712 in 2020
The total amount Medicare approved for these services in 2020. 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, 2020.
Paid by Medicare
About $82,916 in 2020
The part of the Medicare-allowed amount that Medicare itself paid in 2020, 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, 2020.
30-day fills
1,936 standardized 30-day fills in 2021
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
$9,764 in 2021
The total cost of these prescriptions in 2021, 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, 2021.
Open Payments general payments, program year 2022
All general payments: $36.17 across 2 records.
By nature of payment
- Food and Beverage: $36.17 across 2 records.
Reporting-company totals
- ABBVIE INC.: $36.17 across 2 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 2022 (published June 30, 2026).
NPI first issued
2005
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.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
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. Mccarter 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. Mccarter 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 Norman and Oklahoma
Billing and prescribing volume is not a quality rating.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Mccarter are from 2020.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Mccarter are from 2021.
28 active clinicians are listed under Internal Medicine with a practice address in Norman, OK (1,116 in Oklahoma).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Norman
42.9% of these 28 clinicians have the CMS telehealth indicator.
75% of these 28 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 34% from 2,574 in 2017 to 1,693 in 2020.
- 2017: 2,574
- 2018: 2,089
- 2019: 1,974
- 2020: 1,693
-
Medicare-allowed amount
Medicare-allowed amount decreased 40% from $182,366 in 2017 to $108,712 in 2020.
- 2017: $182,366
- 2018: $138,865
- 2019: $121,515
- 2020: $108,712
-
Paid by Medicare
Paid by Medicare decreased 41% from $139,862 in 2017 to $82,916 in 2020.
- 2017: $139,862
- 2018: $105,001
- 2019: $94,130
- 2020: $82,916
-
Medicare Part D prescriptions
Medicare Part D prescriptions decreased 76% from 3,348 in 2017 to 789 in 2021.
- 2017: 3,348
- 2018: 3,842
- 2019: 4,527
- 2020: 5,283
- 2021: 789
-
30-day fills
30-day fills decreased 69% from 6,236 in 2017 to 1,936 in 2021.
- 2017: 6,236
- 2018: 7,221
- 2019: 8,859
- 2020: 10,754
- 2021: 1,936
-
Part D drug cost
Part D drug cost decreased 93% from $147,369 in 2017 to $9,764 in 2021.
- 2017: $147,369
- 2018: $164,162
- 2019: $177,760
- 2020: $267,159
- 2021: $9,764
-
Industry payments (Open Payments)
Industry payments (Open Payments) decreased 97% from $1,363.89 in 2019 to $36.17 in 2022.
- 2019: $1,363.89
- 2020: $785.57
- 2021: $61.13
- 2022: $36.17
Sources: CMS Medicare Physician & Other Practitioners (2020), CMS Medicare Part D Prescribers (2021), CMS Open Payments (2022), 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 2022 (payments made January 1 – December 31, 2022): fewer than 11 records totaling $36.17.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
VRAYLAR | General | $18.48 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
VRAYLAR | General | $17.69 |
Source: CMS Open Payments, program year 2022, 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 2016–2019 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, 2017–2020; 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 |
|---|---|---|---|---|
|
99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
|
750 | 333 | $110.00 | $71.43 |
|
G0442
Annual alcohol misuse screening, 5 to 15 minutes
|
145 | 145 | $26.00 | $17.19 |
|
99497
Advance care planning, first 30 minutes
|
144 | 144 | $112.20 | $83.91 |
|
99212
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
|
130 | 100 | $64.00 | $43.07 |
|
G0439
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
|
111 | 111 | $180.00 | $110.93 |
|
G0008
Administration of influenza virus vaccine
|
85 | 84 | $15.00 | $14.96 |
|
G0179
Physician or allowed practitioner re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians a
|
53 | 18 | $77.00 | $38.92 |
|
99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
|
49 | 49 | $162.00 | $101.08 |
|
G0181
Physician or allowed practitioner supervision of a patient receiving medicare-covered services provided by a participating home health agency (patient not present) requiring complex and multidisciplinary care modalities involving regular physician or allow
|
48 | 23 | $200.00 | $104.24 |
|
90694
Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage
|
47 | 47 | $35.00 | $34.26 |
|
G0009
Administration of pneumococcal vaccine
|
29 | 29 | $15.00 | $14.92 |
|
90653
Influenza vaccine, inactivated
|
28 | 28 | $35.00 | $34.85 |
|
G0438
Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit
|
27 | 27 | $270.00 | $165.08 |
|
G0180
Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and
|
24 | 21 | $101.00 | $51.14 |
|
90732
Pneumococcal vaccine, 23-valent
|
23 | 23 | $30.00 | $28.57 |
Source: CMS Part B by Provider and Service, 2020; 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 2021.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Levothyroxine Sodium | Levothyroxine Sodium | 85 | 7,170 | $1,812.44 | 36 |
| Atorvastatin Calcium | Atorvastatin Calcium | 75 | 5,701 | $913.23 | 35 |
| Omeprazole | Omeprazole | 61 | 4,470 | $732.70 | 27 |
| Simvastatin | Simvastatin | 57 | 4,732 | $336.22 | 30 |
| Amlodipine Besylate | Amlodipine Besylate | 54 | 4,305 | $209.34 | 31 |
| Potassium Chloride | Potassium Chloride | 52 | 2,670 | $1,040.94 | 21 |
| Metformin Hcl | Metformin Hcl | 51 | 3,867 | $291.91 | 24 |
| Metoprolol Succinate | Metoprolol Succinate | 42 | 2,280 | $901.01 | 13 |
| Lisinopril | Lisinopril | 39 | 3,090 | $243.04 | 19 |
| Gabapentin | Gabapentin | 35 | 2,266 | $477.48 | 16 |
| Tamsulosin Hcl | Tamsulosin Hcl | 26 | 1,620 | $347.57 | — |
| Hydrochlorothiazide | Hydrochlorothiazide | 23 | 1,880 | $113.91 | 11 |
| Losartan Potassium | Losartan Potassium | 23 | 2,056 | $353.98 | 14 |
| Pravastatin Sodium | Pravastatin Sodium | 21 | 1,650 | $465.88 | — |
| Trazodone Hcl | Trazodone Hcl | 21 | 1,110 | $123.32 | 12 |
| Clonidine Hcl | Clonidine Hcl | 16 | 720 | $88.54 | — |
| Triamterene-Hydrochlorothiazid | Triamterene/Hydrochlorothiazid | 16 | 1,254 | $256.85 | — |
| Metoprolol Tartrate | Metoprolol Tartrate | 15 | 1,290 | $105.66 | — |
| Escitalopram Oxalate | Escitalopram Oxalate | 14 | 1,186 | $279.41 | — |
| Montelukast Sodium | Montelukast Sodium | 14 | 1,260 | $286.96 | — |
| Furosemide | Furosemide | 13 | 840 | $33.67 | — |
| Clopidogrel | Clopidogrel Bisulfate | 12 | 1,050 | $131.10 | — |
| Glimepiride | Glimepiride | 12 | 1,080 | $124.01 | — |
| Losartan-Hydrochlorothiazide | Losartan/Hydrochlorothiazide | 12 | 480 | $95.23 | — |
Source: CMS Part D by Provider and Drug, 2021; 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
I20090206000357
OK
3072678077
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 500 E ROBINSON ST STE 2400, NORMAN, OK 730716684 (Tel: 4053076668)
NPI status registered as active in NPPES database
Registered at 900 N PORTER AVE, SUITE 310, NORMAN, OK 730716424 (Tel: 4053215001)
Registered at PO BOX 1330, NORMAN, OK 730701330 (Tel: 4053076630)
Recorded as JOHN MCCARTER, M D
Internal Medicine (license number reported to NPPES: OK 12007)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine Providers in Norman
- Dr. Kumar Ennamuri, MD
- Dr. Jonathan Bryan, DO
- Dr. Johnny Johnson, DO
- Dr. Mudassir Nawaz, MD
- Dr. Joe Riddle, MD
- Dr. John Krodel, MD
Mailing Address
Po Box 1330
Norman, OK 730701330
Phone: 4053076630