Dr. Matthew Alexander Stack, MD

  • Saint Louis, MO
  • Infectious disease specialist
NPI1962994491PAC ID5991050577
Medicare services, 2024
29
Medicare patients, 2024
21
Part D claims, 2024
173
MIPS score, 2024
85
Hospital affiliations
3
Practice address
1225 S Grand Blvd, 3rd Floor, Saint Louis, MO 63104
Practice phone
Call (314) 617-2709
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

SLUCare Physician Group Dermatology Pathology

Clinical Lab - Full Service · Saint Louis, Missouri

See all 8 affiliations

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Dr. Matthew Alexander Stack is an infectious disease specialist in Saint Louis, Missouri

Dr. Stack practices at SLUCare Physician Group Dermatology Pathology in Saint Louis, Missouri.

Dr. Stack's NPI, 1962994491, was assigned on May 31, 2018. Dr. Stack graduated from Wayne State University School of Medicine in 2018. Dr. Stack holds Texas license BP10082502.

NPI and contact details
Medicare PAC ID
5991050577
NPI enumeration date
May 31, 2018
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(314) 617-2709
Professional email
Get email
Personal email
Get email
Mobile number
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Sex
Male
Estimated age
34
Medical school graduation
2018

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Matthew Alexander Stack practices at SLUCare Physician Group Dermatology Pathology in Saint Louis, Missouri

Dr. Stack's primary practice is SLUCare Physician Group Dermatology Pathology, at 1225 S Grand Blvd, 3rd Floor, Saint Louis, MO 63104. The practice phone is (314) 617-2709.

  • SLUCare Physician Group Dermatology Pathology
    1225 S Grand Blvd, 3rd Floor, Saint Louis, MO 63104Phone(314) 617-2709

Source: Dmand AI Affiliation Data

Dr. Matthew Alexander Stack is affiliated with 6 sites of care and 2 medical groups

Dr. Stack's primary practice is SLUCare Physician Group Dermatology Pathology in Saint Louis, Missouri. Dr. Stack is also affiliated with SSM Health Saint Louis University Hospital. The medical group on file is SLUCare Physician Group. Dmand AI also links Dr. Stack to 2 more hospitals, 1 clinical lab, 1 group practice or clinic and 1 medical group, each named with a free account. Dr. Stack's employer is on file too: a clinical lab.

See all 8 affiliations for Dr. Stack

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Matthew Alexander Stack's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Stack practices, 6 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
SLUCare Physician Group Dermatology PathologyAvailable with a free account
+5 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Dr. Matthew Alexander Stack is one of 179 infectious disease specialists in Missouri

Infectious disease is Dr. Stack's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dmand AI has Dr. Stack's licenses on file in 2 states: Texas and Indiana.

Specialties and state licenses

  • Infectious disease, TexasPrimaryLicense BP10082502 · taxonomy 207RI0200X
  • Student in an organized health care education/training program, IndianaLicense 11020118A · taxonomy 390200000X

Infectious disease specialists near Dr. Stack

Counts of infectious disease specialists 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

Dr. Matthew Alexander Stack billed Medicare for 29 services in 2024

CMS data shows 29 Medicare services from Dr. Stack across 1 procedure code in 2024, for 21 Medicare patients. Medicare paid $2,629 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 202429
Medicare patients21
Paid by Medicare$2,629
Procedure codes1

Dr. Stack compared with the Missouri median for infectious disease specialists, 2024

  • Dr. Stack
  • Missouri median
Medicare services
29vs 27689% below
Medicare patients
21vs 12783% below
Part D claims
63vs 20369% below

Medians across 176 infectious disease specialists in Missouri with Dmand AI profiles that report each measure.

Dr. Stack's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Stack

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Matthew Alexander Stack treated 21 Medicare patients in 2024, average age 59

CMS counts 21 Medicare patients who saw Dr. Stack in 2024. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 5.16, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Stack's median patient age at 67, with 44% women.

Medicare patients, 202421
Average age59
Average risk score5.16

Chronic conditions among Dr. Stack's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Diabetes71%
  4. Chronic kidney disease62%
  5. Anxiety52%

Share of Medicare patients with each condition. A patient can have several.

Dr. Stack's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 67

Patient panel by sex, all payers

  • Women44%
  • Men56%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Matthew Alexander Stack wrote 173 Medicare Part D claims in 2024

In 2024, Dr. Stack wrote 173 Medicare Part D claims for 44 patients. 84% of them were for generic drugs. CMS names the drug for 63 of them, across 4 drugs with 11 or more claims each, at $837 in total drug cost. In 2023, CMS named 33 claims across 1 drug.

Part D claims, 2024173
Drugs named by CMS4
Total drug cost$837
Part D patients44

Dr. Stack's Part D claims by kind of drug, 2024

  • Generic145 claims84%
  • Brand-name28 claims16%

Dr. Stack's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Stack's Part D claims, 2024

  • Antibiotics40%70 of 173 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 332024: 6391%

Drugs named by CMS: 4 in 2024, 1 in 2023.

See all prescribing by Dr. Stack

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. Matthew Alexander Stack scored 85 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 85 out of 100 for Dr. Stack for performance year 2024, reported as part of a group. Dr. Stack accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Stack as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Stack's MIPS scores, performance year 2024

  • 85of 100Final score
  • 68.5of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 72of 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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Dr. Matthew Alexander Stack received $2,111 in industry payments from 2024 to 2025

CMS Open Payments shows 27 general payments to Dr. Stack from 8 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 98% of the total. ViiV Healthcare Company paid the most, $739.

General payments to Dr. Stack by program year, 2024 to 2025

General payments to Dr. Stack by kind, 2024 to 2025

$2.1Kin total
  • Food and beverage$2,06298%
  • Education$492%

Companies that paid Dr. Stack the most, 2024 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Stack

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Matthew Alexander Stack graduated from Wayne State University School of Medicine

Dr. Stack graduated from Wayne State University School of Medicine in 2018.

  1. Medical schoolWayne State University School of Medicine

Source: Dmand AI Professional Profile Data

Sources for Dr. Matthew Alexander Stack's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Matthew Alexander Stack

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Matthew Alexander Stack's NPI number?

Dr. Matthew Alexander Stack's NPI number is 1962994491. It was assigned on May 31, 2018, and it is active in the NPI Registry.

What kind of doctor is Dr. Matthew Alexander Stack?

Dr. Matthew Alexander Stack is an infectious disease specialist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).

Where does Dr. Matthew Alexander Stack practice?

Dr. Stack practices at 1225 S Grand Blvd, 3rd Floor, Saint Louis, MO 63104. Dr. Stack's primary practice is SLUCare Physician Group Dermatology Pathology in Saint Louis, Missouri. Dmand AI also links Dr. Stack to 2 hospitals, 1 clinical lab, 1 group practice or clinic and 1 medical group.

What is Dr. Matthew Alexander Stack's office phone number?

The practice phone on file for Dr. Stack is (314) 617-2709.

What is Dr. Matthew Alexander Stack's medical license number?

Dr. Stack holds Texas license BP10082502, one of the licenses on file in 2 states.

Which states has Dr. Matthew Alexander Stack been licensed in?

Dmand AI has state licenses on file for Dr. Stack in Texas and Indiana.

Which hospitals is Dr. Matthew Alexander Stack affiliated with?

Dr. Stack is affiliated with SSM Health Saint Louis University Hospital. Dmand AI links Dr. Stack to 2 more hospitals.

What medical group is Dr. Matthew Alexander Stack part of?

Dr. Stack is linked to SLUCare Physician Group. Dmand AI links Dr. Stack to 1 more medical group.

Does Dr. Matthew Alexander Stack accept Medicare?

Yes. CMS data shows Dr. Stack billed Medicare for 29 services in 2024, and Dr. Stack accepts Medicare assignment.

Does Dr. Matthew Alexander Stack offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Stack as offering telehealth services.

Show 7 more questionsShow fewer questions

What is Dr. Matthew Alexander Stack's MIPS score?

Dr. Stack's MIPS final score for performance year 2024 is 85 out of 100, reported as part of a group.

How many Medicare patients does Dr. Matthew Alexander Stack see?

CMS counts 21 Medicare patients who saw Dr. Stack in 2024, with an average age of 59.

What services does Dr. Matthew Alexander Stack bill to Medicare?

In 2024, Dr. Stack's most billed Medicare services were hospital inpatient care (99233).

Where did Dr. Matthew Alexander Stack go to medical school?

Dr. Stack graduated from Wayne State University School of Medicine in 2018.

What drugs does Dr. Matthew Alexander Stack prescribe most?

In 2024 Medicare Part D data, Dr. Stack's most prescribed drugs by claims were Fluconazole, Isoniazid and Cephalexin.

Has Dr. Matthew Alexander Stack received payments from drug or device companies?

CMS Open Payments shows $2,111 in general payments to Dr. Stack from 8 companies from 2024 to 2025. The largest total came from ViiV Healthcare Company.

How long has Dr. Matthew Alexander Stack been practicing?

Dr. Stack graduated from medical school in 2018, 8 years ago.

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