Mariesa L Johnson , PA-C
Physician Assistant โข Grosse Pointe, MI
468 Cadieux Rd
Grosse Pointe, MI 482301507
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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Mariesa Johnson is listed in NPPES under Physician Assistant.
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NPI assigned on February 15, 2023; this date does not establish years in practice.
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Published CMS data list 32 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:
- 99284 โ Emergency department visit with moderate level of medical decision making: 18 service units.
- 99285 โ Emergency department visit with high level of medical decision making: 14 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 the full table ยท Guide: How to read Medicare Part B data
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Published CMS data list 128 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:
- Prednisone โ 39 prescription fills, including refills.
- Ibuprofen โ 38 prescription fills, including refills.
- Famotidine โ 14 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 6 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 85% of clinicians listed under Physician Assistant in Grosse Pointe, MI (2024, 18 clinicians with data). Median for this group: 63. Middle half: 38 to 156.
Fewer Medicare Part B services than 85% of clinicians listed under Physician Assistant in Michigan (2024, 3,281 clinicians with data). Median for this group: 134. Middle half: 59 to 290.
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 17 in 2023 to 32 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2023โ2024.
Practice Location & Contact Primary Location
468 Cadieux Rd
Grosse Pointe, MI 482301507
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Lenox, MI. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
41 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 $4,044 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 $2,956 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
128 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
$456 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.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2021โ2025.
NPI first issued
2023
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, โDoes your provider accept Medicare as full payment?โ
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)
Mariesa Johnson 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 Mariesa Johnson 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 Grosse Pointe and Michigan
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 85% of clinicians listed under Physician Assistant in Grosse Pointe, MI (2024, 18 clinicians with data). Median for this group: 63. Middle half: 38 to 156.
Fewer Medicare Part B services than 85% of clinicians listed under Physician Assistant in Michigan (2024, 3,281 clinicians with data). Median for this group: 134. Middle half: 59 to 290.
Medicare-allowed amount
A lower Medicare-allowed amount than 75% of clinicians listed under Physician Assistant in Grosse Pointe, MI (2024, 18 clinicians with data). Median for this group: $6,895. Middle half: $4,053 to $14,405.
A lower Medicare-allowed amount than 75% of clinicians listed under Physician Assistant in Michigan (2024, 3,281 clinicians with data). Median for this group: $10,676. Middle half: $4,960 to $20,226.
Paid by Medicare
A lower Medicare payment amount than 80% of clinicians listed under Physician Assistant in Grosse Pointe, MI (2024, 18 clinicians with data). Median for this group: $4,914. Middle half: $2,995 to $9,537.
A lower Medicare payment amount than 75% of clinicians listed under Physician Assistant in Michigan (2024, 3,281 clinicians with data). Median for this group: $7,770. Middle half: $3,621 to $14,890.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Physician Assistant in Grosse Pointe, MI (2024, 17 clinicians with data). Median for this group: 121. Middle half: 39 to 159.
Fewer Part D prescriptions than 65% of clinicians listed under Physician Assistant in Michigan (2024, 3,741 clinicians with data). Median for this group: 302. Middle half: 82 to 1,061.
Part D drug cost
A lower Part D drug cost than 75% of clinicians listed under Physician Assistant in Grosse Pointe, MI (2024, 17 clinicians with data). Median for this group: $597. Middle half: $456 to $703.
A lower Part D drug cost than 75% of clinicians listed under Physician Assistant in Michigan (2024, 3,741 clinicians with data). Median for this group: $6,107. Middle half: $669 to $117,415.
36 active clinicians are listed under Physician Assistant with a practice address in Grosse Pointe, MI (6,989 in Michigan).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Grosse Pointe
0% of these 36 clinicians have the CMS telehealth indicator.
50% of these 36 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 went from 17 in 2023 to 32 in 2024.
- 2023: 17
- 2024: 32
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Medicare-allowed amount
Medicare-allowed amount increased 123% from $1,810 in 2023 to $4,044 in 2024.
- 2023: $1,810
- 2024: $4,044
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Paid by Medicare
Paid by Medicare increased 105% from $1,442 in 2023 to $2,956 in 2024.
- 2023: $1,442
- 2024: $2,956
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 412% from 25 in 2023 to 128 in 2024.
- 2023: 25
- 2024: 128
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30-day fills
30-day fills increased 412% from 25 in 2023 to 128 in 2024.
- 2023: 25
- 2024: 128
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Part D drug cost
Part D drug cost went from $68 in 2023 to $456 in 2024.
- 2023: $68
- 2024: $456
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 ยท Report an error.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2022โ2023 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, 2023โ2024; 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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99284
Emergency department visit with moderate level of medical decision making
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18 | 18 | $273.00 | $105.55 |
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99285
Emergency department visit with high level of medical decision making
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14 | 14 | $400.00 | $153.18 |
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 |
|---|---|---|---|---|---|
| Prednisone | Prednisone | 39 | 219 | $64.15 | 37 |
| Ibuprofen | Ibuprofen | 38 | 333 | $91.54 | 38 |
| Famotidine | Famotidine | 14 | 360 | $67.73 | 14 |
| Ondansetron Odt | Ondansetron | 14 | 118 | $195.40 | 12 |
| Methocarbamol | Methocarbamol | 12 | 46 | $21.26 | 12 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 11 | 33 | $15.67 | 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: 2024-03-07NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20230531001982
MI
6709243165
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Secondary Practice Locations
36555 26 Mile Rd Ste 1100
Lenox, MI 480483186
Phone: 9475234010
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Physician Assistant
Physician Assistant
Nurse Practitioner
Family Nurse Practitioner (Board Certified)
Physician Assistant
Physician Assistant
Physician Assistant (Certified)
Physician Assistant
Physician Assistant (Certified)
Physician Assistant
Physician Assistant
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 26901 BEAUMONT BLVD # 3D, SOUTHFIELD, MI 480333849 (Tel: 9475221952)
NPI status registered as active in NPPES database
Registered at 468 CADIEUX RD, GROSSE POINTE, MI 482301507 (Tel: 8105809787)
Registered at 8762 SHORT CUT RD, IRA, MI 480232011 (Tel: 8105809787)
Recorded as MARIESA JOHNSON, PA-C
Physician Assistant (license number reported to NPPES: MI 5601011569)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Grosse Pointe
- Stacey Stewart, PA-C
- Carina Ghafari
- Katherine Kennedy, PA-C
- Payton Mercer
- Kelsey Kusch, PA-C
- Shauna Wilusz, PA-C
Mailing Address
26901 Beaumont Blvd # 3d
Southfield, MI 480333849
Phone: 9475221952