Mark Stephen Holder, PA-C
- Medicare patients, 2024
- 130
- Part D claims, 2024
- 265
- MIPS score, 2024
- 89
- Hospital affiliations
- 1
- Industry payments
- $250
- Practice address
- 1001 Southern Ridge Ln, Lake Saint Louis, MO 63367
- Practice phone
- Call (314) 961-2255
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Total Access Urgent Care
Lake Saint Louis, Missouri
Find Mark Holder's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Mark Stephen Holder is a physician assistant in Lake Saint Louis, Missouri
Mark Holder practices at Total Access Urgent Care in Lake Saint Louis, Missouri.
Mark Holder's NPI, 1659988533, was assigned on September 25, 2020. Mark Holder holds Missouri license 2020032233.
- NPI
- 1659988533NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1456762889
- NPI enumeration date
- September 25, 2020
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (314) 961-2255
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Mark Stephen Holder practices at Total Access Urgent Care in Lake Saint Louis, Missouri
Mark Holder's primary practice is Total Access Urgent Care, at 1001 Southern Ridge Ln, Lake Saint Louis, MO 63367 in Saint Charles County. The practice phone is (314) 961-2255.
- Total Access Urgent Care1001 Southern Ridge Ln, Lake Saint Louis, MO 63367 · Saint Charles CountyPhone(314) 961-2255
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Mark Stephen Holder is affiliated with 3 sites of care and 1 medical group
Mark Holder's primary practice is Total Access Urgent Care in Lake Saint Louis, Missouri. Mark Holder is also affiliated with Mercy Hospital St. Louis. The medical group on file is Saint Louis Pain Consultants. Dmand AI also links Mark Holder to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Mark Stephen Holder's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mark Holder practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Total Access Urgent Care | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Mark Stephen Holder is one of 1,484 physician assistants in Missouri
Physician assistant is Mark Holder's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Mark Holder is licensed in Missouri.
Specialties and state licenses
- Physician assistant, MissouriPrimary
Physician assistants near Mark Holder
Counts of physician assistants with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Mark Stephen Holder treated 130 Medicare patients in 2024, average age 74
CMS counts 130 Medicare patients who saw Mark Holder in 2024. The largest group is 75 to 84, with 52 patients. 75% of them have arthritis, and 75% have high blood pressure. Their average risk score is 1.33, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Mark Holder's median patient age at 68, with 66% women.
Mark Holder's Medicare patients by age, 2024
Mark Holder's Medicare patients by sex, 2024
- Women8062%
- Men5038%
Chronic conditions among Mark Holder's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Anxiety35%
- Mood disorders30%
- Depression28%
- Diabetes28%
- Chronic kidney disease26%
Share of Medicare patients with each condition. A patient can have several.
Mark Holder's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women66%
- Men34%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Mark Stephen Holder wrote 265 Medicare Part D claims in 2024
In 2024, Mark Holder wrote 265 Medicare Part D claims for 102 patients. 99% of them were for generic drugs.
Mark Holder's Part D claims by kind of drug, 2024
- Generic262 claims99%
- Brand-name and other3 claims1%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Mark Stephen Holder scored 89 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Mark Holder for performance year 2024, reported as part of a group. Mark Holder accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Mark Holder's MIPS scores, performance year 2024
- 89of 100Final score
- 100of 100Quality
- 40of 100Improvement Activities
- 64of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Mark Stephen Holder received $250 in industry payments in 2025
CMS Open Payments shows 9 general payments to Mark Holder from 6 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Boston Scientific Corporation paid the most, $81.
Companies that paid Mark Holder the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Mark Stephen Holder's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Mark Stephen Holder
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Mark Stephen Holder's NPI number?
Mark Stephen Holder's NPI number is 1659988533. It was assigned on September 25, 2020, and it is active in the NPI Registry.
What does Mark Stephen Holder specialize in?
Mark Stephen Holder is a physician assistant in Lake Saint Louis, Missouri. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Mark Stephen Holder practice?
Mark Holder practices at 1001 Southern Ridge Ln, Lake Saint Louis, MO 63367. Mark Holder's primary practice is Total Access Urgent Care in Lake Saint Louis, Missouri. Dmand AI also links Mark Holder to 1 group practice or clinic.
What is Mark Stephen Holder's office phone number?
The practice phone on file for Mark Holder is (314) 961-2255.
What is Mark Stephen Holder's medical license number?
Mark Holder holds Missouri license 2020032233.
Which hospitals is Mark Stephen Holder affiliated with?
Mark Holder is affiliated with Mercy Hospital St. Louis.
What medical group is Mark Stephen Holder part of?
Mark Holder is linked to Saint Louis Pain Consultants.
Does Mark Stephen Holder accept Medicare?
Yes. CMS lists Mark Holder as accepting Medicare assignment.
What is Mark Stephen Holder's MIPS score?
Mark Holder's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.
How many Medicare patients does Mark Stephen Holder see?
CMS counts 130 Medicare patients who saw Mark Holder in 2024, with an average age of 74.
Has Mark Stephen Holder received payments from drug or device companies?
CMS Open Payments shows $250 in general payments to Mark Holder from 6 companies from 2025 to 2025. The largest total came from Boston Scientific Corporation.
How long has Mark Stephen Holder been practicing?
Mark Holder graduated from medical school in 2020, 6 years ago.
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