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Dr. Alex Harris Geyer, MD
NPI1659113900
- Part D claims, 2024
- 201
- Publications
- 1
- Hospital affiliations
- 1
- Industry payments
- $53
- State license
- 1
- Practice address
- 6420 Clayton Rd, Saint Louis, MO 63117
- Practice phone
- Call (314) 768-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Geyer'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.
Dr. Alex Harris Geyer is an internist in Saint Louis, Missouri
Dr. Geyer practices at SSM Health St. Mary's Hospital - St. Louis in Saint Louis, Missouri, part of SSM Health Care.
Dr. Geyer's NPI, 1659113900, was assigned on June 8, 2024. Dr. Geyer holds Missouri license 2024021320.
NPI and contact details
- NPI
- 1659113900NPI Registry (opens in a new tab)
- NPI enumeration date
- June 8, 2024
- NPI status
- Active
- Practice phone
- (314) 768-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Alex Harris Geyer practices at SSM Health St. Mary's Hospital - St. Louis in Saint Louis, Missouri
Dr. Geyer's primary practice is SSM Health St. Mary's Hospital - St. Louis, at 6420 Clayton Rd, Saint Louis, MO 63117 in St. Louis County. The practice phone is (314) 768-8000.
- SSM Health St. Mary's Hospital - St. Louis6420 Clayton Rd, Saint Louis, MO 63117 · St. Louis CountyPhone(314) 768-8000
Source: Dmand AI Affiliation Data
Dr. Alex Harris Geyer is affiliated with 1 site of care
Dr. Geyer's primary practice is SSM Health St. Mary's Hospital - St. Louis in Saint Louis, Missouri, part of SSM Health Care.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Alex Harris Geyer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Geyer practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| SSM Health St. Mary's Hospital - St. Louis | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dmand AI maps EHR vendors, IT decision makers and buying committees across SSM Health Care and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Alex Harris Geyer is one of 2,114 internists in Missouri
Internal medicine is Dr. Geyer's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Geyer is licensed in Missouri.
Specialties and state licenses
- Internal medicine, MissouriPrimary
Internists near Dr. Geyer
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
2,114internists in Missouri735internists in Saint Louis31internists at SSM Health St. Mary's Hospital - St. Louis
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Alex Harris Geyer's patients have a median age of 70
Across all payers, Dmand AI patient panel data puts Dr. Geyer's median patient age at 70, with 60% women.
Dr. Geyer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women60%
- Men40%
Source: Dmand AI Patient Panel Data
Dr. Alex Harris Geyer wrote 201 Medicare Part D claims in 2024
In 2024, Dr. Geyer wrote 201 Medicare Part D claims for 36 patients. 84% of them were for generic drugs. CMS names the drug for 37 of them, across 2 drugs with 11 or more claims each, at $374 in total drug cost.
Part D claims, 2024201
Drugs named by CMS2
Total drug cost$374
Part D patients36
Dr. Geyer's Part D claims by kind of drug, 2024
- Generic168 claims84%
- Brand-name33 claims16%
Dr. Geyer'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.
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
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Dr. Alex Harris Geyer has 1 publication on record
Dmand AI links 1 paper to Dr. Geyer. Dr. Geyer's most frequent co-authors are Stefanie R. Ellison, MD and Eric S. Williams, MD.
Papers1
Dr. Geyer's most frequent co-authors
Recent publications by Dr. Geyer
See who Dr. Geyer researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Geyer works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Alex Harris Geyer received $53 in industry payments from 2024 to 2025
CMS Open Payments shows 2 general payments to Dr. Geyer from 1 drug or device company from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $53.
General payments to Dr. Geyer by program year, 2024 to 2025
Companies that paid Dr. Geyer the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Alex Harris Geyer'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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 Dr. Alex Harris Geyer
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. Alex Harris Geyer's NPI number?
Dr. Alex Harris Geyer's NPI number is 1659113900. It was assigned on June 8, 2024, and it is active in the NPI Registry.
What kind of doctor is Dr. Alex Harris Geyer?
Dr. Alex Harris Geyer is an internist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Alex Harris Geyer practice?
Dr. Geyer practices at 6420 Clayton Rd, Saint Louis, MO 63117. Dr. Geyer's primary practice is SSM Health St. Mary's Hospital - St. Louis in Saint Louis, Missouri, part of SSM Health Care.
What is Dr. Alex Harris Geyer's office phone number?
The practice phone on file for Dr. Geyer is (314) 768-8000.
What is Dr. Alex Harris Geyer's medical license number?
Dr. Geyer holds Missouri license 2024021320.
Which hospitals is Dr. Alex Harris Geyer affiliated with?
Dr. Geyer practices at SSM Health St. Mary's Hospital - St. Louis in Saint Louis, Missouri.
What drugs does Dr. Alex Harris Geyer prescribe most?
In 2024 Medicare Part D data, Dr. Geyer's most prescribed drugs by claims were Atorvastatin Calcium and Gabapentin.
Has Dr. Alex Harris Geyer received payments from drug or device companies?
CMS Open Payments shows $53 in general payments to Dr. Geyer from 1 company from 2024 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Alex Harris Geyer been practicing?
Dr. Geyer's NPI was assigned in 2024.
Does Dr. Alex Harris Geyer do research?
Dmand AI links 1 publication to Dr. Geyer.
Who does Dr. Alex Harris Geyer publish with?
Dr. Geyer's most frequent co-authors are Stefanie R. Ellison, MD (1 shared paper) and Eric S. Williams, MD (1 shared paper).
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