Diadema G Barefield , APRN
Nurse Practitioner • Crestview, FL
326 Merlin Ct
Crestview, FL 325396753
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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Diadema Barefield is listed in NPPES under Nurse Practitioner.
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NPI assigned on June 16, 2021; this date does not establish years in practice.
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Published CMS data list 1,851 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:
- 99309 — Subsequent nursing facility care with moderate level of medical decision making, per day: 691 service units.
- 99308 — Subsequent nursing facility care with straightforward level of medical decision making, per day: 214 service units.
- 11045 — Removal of skin and tissue, each additional 20.0 sq cm or less: 207 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 9 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 722 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:
- Gabapentin — 170 prescription fills, including refills.
- Tizanidine Hcl — 125 prescription fills, including refills.
- Cyclobenzaprine Hcl — 82 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 15 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 80% of clinicians listed under Nurse Practitioner in Crestview, FL (2024, 13 clinicians with data). Median for this group: 401. Middle half: 19 to 1,703.
More Medicare Part B services than 85% of clinicians listed under Nurse Practitioner in Florida (2024, 3,093 clinicians with data). Median for this group: 281. Middle half: 98 to 758.
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 818 in 2021 to 1,851 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2021–2024.
Practice Location & Contact Primary Location
326 Merlin Ct
Crestview, FL 325396753
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
Nurse Practitioner: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
311 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 $163,078 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 $130,856 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
919 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
$19,557 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: $102.10 across 4 records.
By nature of payment
- Food and Beverage: $102.10 across 4 records.
Reporting-company totals
- Smith+Nephew, Inc.: $102.10 across 4 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).
NPI first issued
2021
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)
Diadema Barefield 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 Diadema Barefield 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 Crestview and Florida
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 80% of clinicians listed under Nurse Practitioner in Crestview, FL (2024, 13 clinicians with data). Median for this group: 401. Middle half: 19 to 1,703.
More Medicare Part B services than 85% of clinicians listed under Nurse Practitioner in Florida (2024, 3,093 clinicians with data). Median for this group: 281. Middle half: 98 to 758.
Medicare-allowed amount
A higher Medicare-allowed amount than 90% of clinicians listed under Nurse Practitioner in Crestview, FL (2024, 13 clinicians with data). Median for this group: $27,392. Middle half: $1,917 to $117,749.
A higher Medicare-allowed amount than 90% of clinicians listed under Nurse Practitioner in Florida (2024, 3,093 clinicians with data). Median for this group: $22,890. Middle half: $8,465 to $56,388.
Paid by Medicare
A higher Medicare payment amount than 95% of clinicians listed under Nurse Practitioner in Crestview, FL (2024, 13 clinicians with data). Median for this group: $20,800. Middle half: $1,917 to $78,162.
A higher Medicare payment amount than 90% of clinicians listed under Nurse Practitioner in Florida (2024, 3,093 clinicians with data). Median for this group: $17,374. Middle half: $6,293 to $42,181.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Nurse Practitioner in Crestview, FL (2024, 12 clinicians with data). Median for this group: 499. Middle half: 148 to 1,900.
More Part D prescriptions than 65% of clinicians listed under Nurse Practitioner in Florida (2024, 3,506 clinicians with data). Median for this group: 306. Middle half: 76 to 1,100.
Part D drug cost
Close to the middle for clinicians listed under Nurse Practitioner in Crestview, FL (2024, 12 clinicians with data). Median for this group: $15,447. Middle half: $4,251 to $221,044.
Close to the middle for clinicians listed under Nurse Practitioner in Florida (2024, 3,506 clinicians with data). Median for this group: $18,227. Middle half: $1,370 to $130,581.
20 active clinicians are listed under Nurse Practitioner with a practice address in Crestview, FL (8,853 in Florida).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Crestview
5% of these 20 clinicians have the CMS telehealth indicator.
65% of these 20 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 increased 126% from 818 in 2021 to 1,851 in 2024.
- 2021: 818
- 2022: 906
- 2023: 821
- 2024: 1,851
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Medicare-allowed amount
Medicare-allowed amount increased 127% from $71,845 in 2021 to $163,078 in 2024.
- 2021: $71,845
- 2022: $99,866
- 2023: $85,945
- 2024: $163,078
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Paid by Medicare
Paid by Medicare increased 129% from $57,202 in 2021 to $130,856 in 2024.
- 2021: $57,202
- 2022: $83,577
- 2023: $82,226
- 2024: $130,856
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 917% from 71 in 2021 to 722 in 2024.
- 2021: 71
- 2022: 1,259
- 2023: 1,772
- 2024: 722
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30-day fills
30-day fills increased 898% from 92 in 2021 to 919 in 2024.
- 2021: 92
- 2022: 1,556
- 2023: 2,076
- 2024: 919
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Part D drug cost
Part D drug cost increased 1728% from $1,070 in 2021 to $19,557 in 2024.
- 2021: $1,070
- 2022: $39,128
- 2023: $61,186
- 2024: $19,557
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $243.00 in 2022 to $102.10 in 2025.
- 2022: $243.00
- 2023: $3,818.35
- 2024: $362.51
- 2025: $102.10
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): fewer than 11 records totaling $102.10.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Smith+Nephew, Inc. |
Food and Beverage
In-kind items and services
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COLLAGENASE SANTYL | General | $32.45 |
| Smith+Nephew, Inc. |
Food and Beverage
In-kind items and services
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COLLAGENASE SANTYL | General | $26.94 |
| Smith+Nephew, Inc. |
Food and Beverage
In-kind items and services
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COLLAGENASE SANTYL | General | $21.49 |
| Smith+Nephew, Inc. |
Food and Beverage
In-kind items and services
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COLLAGENASE SANTYL | General | $21.22 |
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 2020–2023 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, 2021–2024; 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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99309
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes
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691 | 113 | $98.00 | $95.01 |
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99308
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more
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214 | 85 | $67.92 | $65.60 |
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11045
Removal of skin and tissue, each additional 20.0 sq cm or less
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207 | 19 | $38.00 | $35.62 |
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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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197 | 111 | $423.10 | $78.33 |
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11042
Removal of skin and tissue, 20.0 sq cm or less
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160 | 45 | $118.00 | $112.27 |
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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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132 | 94 | $600.00 | $109.42 |
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99305
Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes
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130 | 109 | $121.00 | $117.81 |
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80307
Testing for presence of drug, by chemistry analyzers
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60 | 56 | $280.00 | $60.90 |
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G0481
Drug test(s), definitive, utilizing (1) drug identification methods able to identify individual drugs and distinguish between structural isomers (but not necessarily stereoisomers), including, but not limited to gc/ms (any type, single or tandem) and lc/ms
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60 | 56 | $702.08 | $153.46 |
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 |
|---|---|---|---|---|---|
| Gabapentin | Gabapentin | 170 | 6,920 | $2,748.47 | 76 |
| Tizanidine Hcl | Tizanidine Hcl | 125 | 4,930 | $1,599.96 | 55 |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 82 | 2,853 | $1,227.15 | 44 |
| Baclofen | Baclofen | 70 | 2,843 | $1,199.98 | 33 |
| Diclofenac Sodium | Diclofenac Sodium | 53 | 1,196 | $1,771.86 | 26 |
| Methocarbamol | Methocarbamol | 51 | 1,690 | $931.94 | 27 |
| Duloxetine Hcl | Duloxetine Hcl | 34 | 1,320 | $731.35 | 16 |
| Meloxicam | Meloxicam | 28 | 960 | $63.75 | 12 |
| Lidocaine | Lidocaine | 24 | 798 | $2,641.96 | 17 |
| Ibuprofen | Ibuprofen | 19 | 690 | $197.62 | — |
| Celecoxib | Celecoxib | 15 | 630 | $384.49 | — |
| Amitriptyline Hcl | Amitriptyline Hcl | 14 | 720 | $147.92 | — |
| Movantik | Naloxegol Oxalate | 14 | 420 | $5,596.67 | — |
| Ondansetron Hcl | Ondansetron Hcl | 12 | 600 | $248.50 | — |
| Methylprednisolone | Methylprednisolone | 11 | 66 | $65.02 | 11 |
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: 2021-06-15NUCC Taxonomy Code: 363L00000X
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NURSE PRACTITIONER
I20210804004076
FL
1850795311
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Career & Practice History
NPI enumerated June 16, 2021.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from July 2021 to August 2026.
NPI Administrative Meta
Other Nurse Practitioners in Crestview
- Lindsay Adams, APRN
- Liza Hooks, APRN
- Adam Hargis, NP
- William Necaise, ARNP
- Jung Hyun Koh, ARNP
- Christina Johnson, ARNP
Mailing Address
326 Merlin Ct
Crestview, FL 325396753
Phone: 8509027949