Matthew Steven Maas , PA-C
Physician Assistant โข Clarkston, MI
6400 Waldon Center Dr
Clarkston, MI 483464808
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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NPI assigned on September 25, 2018; this date does not establish years in practice.
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Published CMS data list 46 Original Medicare Part B services in 2021.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2021. Published rows only; this is not a quality measure.
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Published Part B service records, 2021:
- 99233 โ Subsequent hospital care with moderate levelof medical decision making: 23 service units.
- 99284 โ Emergency department visit with moderate level of medical decision making: 12 service units.
- 99217 โ Hospital observation care on day of discharge: 11 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2021. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2020 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2021). CPT notice
See the full table ยท Guide: How to read Medicare Part B data
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Published CMS data list 2,410 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:
- Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) โ 335 prescription fills, including refills.
- Duloxetine Hcl โ 325 prescription fills, including refills.
- Gabapentin โ 321 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 23 records in the table ยท Guide: How to read Medicare Part D prescriber data
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More Part D prescriptions than 90% of clinicians listed under Physician Assistant in Clarkston, MI (2024, 17 clinicians with data). Median for this group: 484. Middle half: 306 to 785.
More Part D prescriptions than 85% of clinicians listed under Physician Assistant in Michigan (2024, 3,756 clinicians with data). Median for this group: 301. Middle half: 83 to 1,058.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 95 in 2019 to 46 in 2021.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2019โ2021.
Practice Location & Contact Primary Location
6400 Waldon Center Dr
Clarkston, MI 483464808
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 Flint, 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
81 people with Original Medicare in 2021
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2021.
Medicare-allowed amount
About $3,911 in 2021
The total amount Medicare approved for these services in 2021. 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, 2021.
Paid by Medicare
About $3,067 in 2021
The part of the Medicare-allowed amount that Medicare itself paid in 2021, 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, 2021.
30-day fills
3,119 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
$42,393 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 2025
All general payments: $364.35 across 17 records.
By nature of payment
- Food and Beverage: $364.35 across 17 records.
Reporting-company totals (3 largest of 10)
- Pfizer Inc.: $69.74 across 3 records.
- ABBVIE INC.: $61.54 across 3 records.
- Collegium Pharmaceutical, Inc.: $48.22 across 3 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
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.
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, CMS release of October 2, 2026; 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, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Matthew Maas 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 Matthew Maas 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 Clarkston and Michigan
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
More Part D prescriptions than 90% of clinicians listed under Physician Assistant in Clarkston, MI (2024, 17 clinicians with data). Median for this group: 484. Middle half: 306 to 785.
More Part D prescriptions than 85% of clinicians listed under Physician Assistant in Michigan (2024, 3,756 clinicians with data). Median for this group: 301. Middle half: 83 to 1,058.
Part D drug cost
A higher Part D drug cost than 85% of clinicians listed under Physician Assistant in Clarkston, MI (2024, 17 clinicians with data). Median for this group: $11,629. Middle half: $2,154 to $41,771.
A higher Part D drug cost than 65% of clinicians listed under Physician Assistant in Michigan (2024, 3,756 clinicians with data). Median for this group: $6,017. Middle half: $670 to $116,880.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Matthew Maas are from 2021.
29 active clinicians are listed under Physician Assistant with a practice address in Clarkston, MI (7,169 in Michigan).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Clarkston
24.1% of these 29 clinicians have the CMS telehealth indicator.
55.2% of these 29 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 52% from 95 in 2019 to 46 in 2021.
- 2019: 95
- 2021: 46
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Medicare-allowed amount
Medicare-allowed amount decreased 56% from $8,840 in 2019 to $3,911 in 2021.
- 2019: $8,840
- 2021: $3,911
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Paid by Medicare
Paid by Medicare decreased 56% from $6,911 in 2019 to $3,067 in 2021.
- 2019: $6,911
- 2021: $3,067
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 1335% from 168 in 2022 to 2,410 in 2024.
- 2022: 168
- 2023: 1,468
- 2024: 2,410
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30-day fills
30-day fills increased 1400% from 208 in 2022 to 3,119 in 2024.
- 2022: 208
- 2023: 1,941
- 2024: 3,119
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Part D drug cost
Part D drug cost increased 955% from $4,017 in 2022 to $42,393 in 2024.
- 2022: $4,017
- 2023: $32,344
- 2024: $42,393
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $73.22 in 2022 to $364.35 in 2025.
- 2022: $73.22
- 2023: $282.76
- 2024: $233.20
- 2025: $364.35
Sources: CMS Medicare Physician & Other Practitioners (2021), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS release of October 2, 2026, 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 2025 (payments made January 1 โ December 31, 2025): 17 records totaling $364.35.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Pfizer Inc. |
Food and Beverage
In-kind items and services
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NURTEC ODT | General | $31.59 |
| VERTEX PHARMACEUTICALS INCORPORATED |
Food and Beverage
In-kind items and services
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JOURNAVX | General | $29.74 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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STRENSIQ | General | $28.36 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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QULIPTA | General | $27.30 |
| Tonix Medicines, Inc. |
Food and Beverage
In-kind items and services
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TONMYA | General | $27.22 |
| SPR Therapeutics, Inc |
Food and Beverage
Cash or cash equivalent
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SPRINT PNS System | General | $24.88 |
| Saluda Medical Americas, Inc. |
Food and Beverage
In-kind items and services
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Evoke | General | $22.80 |
| SI-BONE, INC. |
Food and Beverage
Cash or cash equivalent
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โ | General | $21.40 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
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NURTEC ODT | General | $19.51 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
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NURTEC ODT | General | $18.64 |
| Collegium Pharmaceutical, Inc. |
Food and Beverage
Cash or cash equivalent
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Belbuca | General | $17.33 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
UBRELVY | General | $17.29 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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QULIPTA | General | $16.95 |
| Collegium Pharmaceutical, Inc. |
Food and Beverage
Cash or cash equivalent
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Belbuca | General | $16.87 |
| Bioventus LLC |
Food and Beverage
In-kind items and services
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SUPARTZ FX SODIUM HYALURONATE | General | $15.67 |
| Bioventus LLC |
Food and Beverage
In-kind items and services
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XCELL | General | $14.78 |
| Collegium Pharmaceutical, Inc. |
Food and Beverage
Cash or cash equivalent
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Belbuca | General | $14.02 |
Source: CMS Open Payments, program year 2025, 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 2018โ2020 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, 2019โ2021; 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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99233
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes
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23 | 15 | $135.00 | $86.56 |
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99284
Emergency department visit with moderate level of medical decision making
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12 | 12 | $270.00 | $104.84 |
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99217
Hospital observation care on day of discharge
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11 | 11 | $147.73 | $60.22 |
Source: CMS Part B by Provider and Service, 2021; 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 |
|---|---|---|---|---|---|
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 335 | 9,085 | $4,171.14 | 74 |
| Duloxetine Hcl | Duloxetine Hcl | 325 | 15,159 | $7,030.93 | 123 |
| Gabapentin | Gabapentin | 321 | 11,827 | $5,151.06 | 110 |
| Pregabalin | Pregabalin | 290 | 11,174 | $6,403.89 | 125 |
| Tramadol Hcl | Tramadol Hcl | 231 | 7,317 | $1,472.81 | 65 |
| Tizanidine Hcl | Tizanidine Hcl | 199 | 6,791 | $1,902.06 | 76 |
| Topiramate | Topiramate | 155 | 7,410 | $1,849.92 | 56 |
| Methocarbamol | Methocarbamol | 107 | 3,785 | $1,083.70 | 67 |
| Venlafaxine Hcl Er | Venlafaxine Hcl | 88 | 4,918 | $2,261.55 | 39 |
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 73 | 1,880 | $1,041.40 | 16 |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 65 | 2,295 | $272.14 | 26 |
| Morphine Sulfate Er | Morphine Sulfate | 32 | 868 | $1,498.00 | โ |
| Oxycodone Hcl | Oxycodone Hcl | 24 | 670 | $414.05 | โ |
| Methadone Hcl | Methadone Hcl | 22 | 624 | $178.12 | โ |
| Buprenorphine | Buprenorphine | 20 | 594 | $3,689.84 | โ |
| Amitriptyline Hcl | Amitriptyline Hcl | 19 | 785 | $157.04 | 12 |
| Fentanyl | Fentanyl | 18 | 525 | $1,514.53 | โ |
| Nortriptyline Hcl | Nortriptyline Hcl | 18 | 885 | $360.36 | โ |
| Levetiracetam | Levetiracetam | 18 | 585 | $463.83 | โ |
| Meloxicam | Meloxicam | 16 | 343 | $35.16 | โ |
| Lidocaine | Lidocaine | 12 | 345 | $727.64 | โ |
| Trazodone Hcl | Trazodone Hcl | 11 | 480 | $131.51 | โ |
| Tramadol Hcl Er | Tramadol Hcl | 11 | 239 | $581.88 | โ |
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: 2026-03-25NUCC 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
I20181011002344
MI
2466704895
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Secondary Practice Locations
1 Hurley Plz
Flint, MI 485035902
Phone: 8102629000
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Physical Therapist
Physical Therapist
Orthopaedic Surgery
Doctor of Osteopathic Medicine (D.O.)
Orthopaedic Surgery
Doctor of Osteopathic Medicine (D.O.)
Physician Assistant
Physician Assistant (Certified)
Physician Assistant
Physician Assistant (Certified)
Orthopaedic Surgery - Adult Reconstructive Orthopaedic Surgery
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 6400 WALDON CENTER DR, CLARKSTON, MI 483464808 (Tel: 8109530500)
Registered at 6400 WALDON CENTER DR, CLARKSTON, MI 483464808 (Tel: 8109530500)
Additional practice office at 1 Hurley Plz, Flint, MI 485035902
Registered at 1 HURLEY PLZ, FLINT, MI 485035902 (Tel: 8102629000)
Registered at 730 3RD ST, FENTON, MI 484304117 (Tel: 8109226820)
NPI status registered as active in NPPES database
Registered at 1447 N HARRISON ST, SAGINAW, MI 486024727 (Tel: 9895836326)
Registered at 329 SUNRISE DR, FLUSHING, MI 484332125 (Tel: 8109226820)
Recorded as MATTHEW MAAS, PA-C
Physician Assistant (license number reported to NPPES: MI 5601008803)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Clarkston
- Katie Rutkowski, PA-C
- Ashley Dubay, PA-C
- Tara Taylor, PA-C
- Stacey Nyland, PA-C
- Tyler Wolfe
- Marygrace Hayden
Mailing Address
6400 Waldon Center Dr
Clarkston, MI 483464808
Phone: 8109530500