Brittany Melissa Larson , CNP
Nurse Practitioner โข Ann Arbor, MI
Iha Urgent Care, 4200 Whitehall Drive
Ann Arbor, MI 48105
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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Brittany Larson is listed in NPPES under Nurse Practitioner.
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NPI assigned on December 5, 2018; this date does not establish years in practice.
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Published CMS data list 165 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99213 โ Established patient outpatient office visit: 53 service units.
- 99203 โ New patient outpatient office visit: 41 service units.
- 81003 โ Automated urinalysis test: 24 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ 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 ยท Guide: How to read Medicare Part B data
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Published CMS data list 109 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) โ 30 prescription fills, including refills.
- Nitrofurantoin Mono-Macro (Nitrofurantoin Monohyd/M-Cryst) โ 22 prescription fills, including refills.
- Prednisone โ 20 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 5 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Close to the middle for Medicare Part B services among clinicians listed under Nurse Practitioner in Ann Arbor, MI (2024, 205 clinicians with data). Median for this group: 131. Middle half: 62 to 325.
Close to the middle for Medicare Part B services among clinicians listed under Nurse Practitioner in Michigan (2024, 1,372 clinicians with data). Median for this group: 167. Middle half: 69 to 368.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 368 in 2020 to 165 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
Iha Urgent Care
4200 Whitehall Drive
Ann Arbor, MI 48105
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: Iha Health Services Corporation. 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
2012
What Public CMS Data Show
Nurse Practitioner: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
126 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 โ by Provider, 2024.
Medicare-allowed amount
About $12,100 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 โ by Provider and Service, 2024.
Paid by Medicare
About $8,865 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 โ by Provider and Service, 2024.
30-day fills
109 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
$620 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 โ by Provider and Drug, 2024.
Open Payments general payments, program year 2021
All general payments: $29.27 across 2 records.
By nature of payment
- Food and Beverage: $29.27 across 2 records.
Reporting-company totals
- AbbVie Inc.: $16.59 across 1 record.
- BOSTON SCIENTIFIC CORPORATION: $12.68 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 2021 (published June 30, 2026).
Years since graduation
14 years (graduated 2012)
CMS Doctors and Clinicians data list 2012 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
2018
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, โDoes your provider accept Medicare as full payment?โ
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)
Brittany Larson 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 Brittany Larson 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 Ann Arbor and Michigan
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under Nurse Practitioner in Ann Arbor, MI (2024, 205 clinicians with data). Median for this group: 131. Middle half: 62 to 325.
Close to the middle for clinicians listed under Nurse Practitioner in Michigan (2024, 1,372 clinicians with data). Median for this group: 167. Middle half: 69 to 368.
Medicare-allowed amount
Close to the middle for clinicians listed under Nurse Practitioner in Ann Arbor, MI (2024, 205 clinicians with data). Median for this group: $10,720. Middle half: $5,016 to $23,173.
Close to the middle for clinicians listed under Nurse Practitioner in Michigan (2024, 1,372 clinicians with data). Median for this group: $13,264. Middle half: $5,488 to $26,831.
Paid by Medicare
Close to the middle for clinicians listed under Nurse Practitioner in Ann Arbor, MI (2024, 205 clinicians with data). Median for this group: $8,091. Middle half: $3,718 to $17,311.
Close to the middle for clinicians listed under Nurse Practitioner in Michigan (2024, 1,372 clinicians with data). Median for this group: $9,814. Middle half: $4,035 to $19,683.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Nurse Practitioner in Ann Arbor, MI (2024, 228 clinicians with data). Median for this group: 141. Middle half: 45 to 414.
Fewer Part D prescriptions than 70% of clinicians listed under Nurse Practitioner in Michigan (2024, 1,581 clinicians with data). Median for this group: 360. Middle half: 97 to 1,478.
Part D drug cost
A lower Part D drug cost than 70% of clinicians listed under Nurse Practitioner in Ann Arbor, MI (2024, 228 clinicians with data). Median for this group: $8,349. Middle half: $604 to $60,501.
A lower Part D drug cost than 80% of clinicians listed under Nurse Practitioner in Michigan (2024, 1,581 clinicians with data). Median for this group: $24,697. Middle half: $1,472 to $176,540.
704 active clinicians are listed under Nurse Practitioner with a practice address in Ann Arbor, MI (3,576 in Michigan).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Ann Arbor
19.2% of these 704 clinicians have the CMS telehealth indicator.
45.5% of these 704 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 55% from 368 in 2020 to 165 in 2024.
- 2020: 368
- 2021: 407
- 2022: 293
- 2023: 248
- 2024: 165
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Medicare-allowed amount
Medicare-allowed amount decreased 48% from $23,448 in 2020 to $12,100 in 2024.
- 2020: $23,448
- 2021: $27,574
- 2022: $21,415
- 2023: $19,892
- 2024: $12,100
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Paid by Medicare
Paid by Medicare decreased 42% from $15,369 in 2020 to $8,865 in 2024.
- 2020: $15,369
- 2021: $18,213
- 2022: $17,408
- 2023: $14,275
- 2024: $8,865
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 75% from 432 in 2020 to 109 in 2024.
- 2020: 432
- 2021: 813
- 2022: 328
- 2023: 82
- 2024: 109
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30-day fills
30-day fills decreased 89% from 1,019 in 2020 to 109 in 2024.
- 2020: 1,019
- 2021: 2,037
- 2022: 702
- 2023: 82
- 2024: 109
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Part D drug cost
Part D drug cost decreased 93% from $9,005 in 2020 to $620 in 2024.
- 2020: $9,005
- 2021: $39,162
- 2022: $4,290
- 2023: $815
- 2024: $620
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Industry payments (Open Payments)
CMS data for industry payments (Open Payments) are available for 2021 only.
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2021), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท 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 2021 (payments made January 1 โ December 31, 2021): fewer than 11 records totaling $29.27.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| AbbVie Inc. |
Food and Beverage
In-kind items and services
|
QULIPTA | General | $16.59 |
| BOSTON SCIENTIFIC CORPORATION |
Food and Beverage
In-kind items and services
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WATCHMAN | General | $12.68 |
Source: CMS Open Payments, program year 2021, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2018โ2023 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 โ by Provider and Service data, 2019โ2024; 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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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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53 | 52 | $176.91 | $75.19 |
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99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
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41 | 41 | $239.78 | $95.98 |
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81003
Automated urinalysis test
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24 | 23 | $9.00 | $2.20 |
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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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24 | 24 | $255.42 | $108.80 |
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87428
Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza
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23 | 23 | $102.96 | $65.89 |
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 |
|---|---|---|---|---|---|
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 30 | 206 | $202.47 | 30 |
| Nitrofurantoin Mono-Macro | Nitrofurantoin Monohyd/M-Cryst | 22 | 128 | $197.42 | 22 |
| Prednisone | Prednisone | 20 | 108 | $25.67 | 20 |
| Cephalexin | Cephalexin | 19 | 131 | $140.47 | 18 |
| Azithromycin | Azithromycin | 18 | 86 | $53.73 | 18 |
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: 2025-03-11NUCC 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.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NURSE PRACTITIONER
I20220302001336
MI
7719228840
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
Iha Health Services Corporation
19000 St Joes Pkwy, Livonia, MI 481521477
Iha Health Services Corporation
5505 S Old Us, Brighton, MI 481167524
Iha Health Services Corporation
4200 Whitehall Dr, Ann Arbor, MI 481059694
Iha Health Services Corporation
4400 Highland Rd, Waterford, MI 483281222
Phone: 2486186000
Iha Health Services Corporation
2305 Genoa Bus Park Dr, Brighton, MI 481147005
Iha Health Services Corporation
5789 S Main St, Clarkston, MI 483462959
Iha Health Services Corporation
23200 Pontiac Trl, South Lyon, MI 481781983
Iha Health Services Corporation
44428 Woodward Ave, Pontiac, MI 483415009
Phone: 7347128700
Iha Health Services Corporation
29370 Plymouth Rd, Livonia, MI 481502399
Phone: 7348445212
Iha Health Services Corporation
5505 S Old Us 23, Brighton, MI 481167524
Phone: 7348877888
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Family Medicine
Doctor of Osteopathic Medicine (D.O.)
Nurse Practitioner
Nurse Practitioner
Nurse Practitioner - Family
Certified Nurse Practitioner
Physician Assistant
Physician Assistant (Certified)
Physician Assistant - Medical
Physician Assistant (Certified)
Internal 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
Recorded as BRITTANY LARSON, CNP
Registered at IHA URGENT CARE, 4200 WHITEHALL DRIVE, ANN ARBOR, MI 48105 (Tel: 7349950308)
Registered at 24 FRANK LLOYD WRIGHT DRIVE, SUITE J2000, ANN ARBOR, MI 48105 (Tel: 7347476766)
Recorded as BRITTANY CHARNOCK, CNP
Nurse Practitioner (license number reported to NPPES: MI 4704296112)
Registered at 1600 HIGHWAY 17 N, SURFSIDE BEACH, SC 295756015 (Tel: 8432381461)
NPI status registered as active in NPPES database
Registered at 4301 DICK POND RD, MYRTLE BEACH, SC 295886807 (Tel: 8436528100)
Registered at PO BOX 421718, GEORGETOWN, SC 294424203 (Tel: 8436528220)
Recorded as BRITTANY CHARNOCK, FNP
Nurse Practitioner (license number reported to NPPES: SC 22366)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Nurse Practitioners in Ann Arbor
- Amber Mason-Noble, NP
- Teressa Funkhouser, NP
- Sherry Lenz, NP
- Rachel Schrock, NP
- Brianna Schuelke
- Francesca Gigg, NP
Mailing Address
24 Frank Lloyd Wright Drive, Suite J2000
Ann Arbor, MI 48105
Phone: 7347476766