Dr. Wendymarie Gejer, MD
- Medicare services, 2024
- 106
- Medicare patients, 2024
- 108
- Part D claims, 2024
- 56
- Hospital affiliations
- 1
- Industry payments
- $181
- Practice address
- 1500 Lansdowne Ave, Darby, PA 19023
- Practice phone
- Call (215) 237-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Gejer's professional email, personal email and mobile number
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Dr. Wendymarie Gejer is an emergency medicine physician in Darby, Pennsylvania
Dr. Gejer practices at Mercy Fitzgerald Hospital in Darby, Pennsylvania, part of Trinity Health.
Dr. Gejer's NPI, 1548296908, was assigned on June 25, 2006. Dr. Gejer holds Pennsylvania license MD428175.
- NPI
- 1548296908NPI Registry (opens in a new tab)
- NPI enumeration date
- June 25, 2006
- NPI status
- Active
- Practice phone
- (215) 237-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Wendymarie Gejer practices at Mercy Fitzgerald Hospital in Darby, Pennsylvania
Dr. Gejer's primary practice is Mercy Fitzgerald Hospital, at 1500 Lansdowne Ave, Darby, PA 19023 in Delaware County. The practice phone is (215) 237-4000.
- Mercy Fitzgerald Hospital1500 Lansdowne Ave, Darby, PA 19023 · Delaware CountyPhone(215) 237-4000
Source: Dmand AI Affiliation Data
Dr. Wendymarie Gejer is affiliated with 2 sites of care and 2 medical groups
Dr. Gejer's primary practice is Mercy Fitzgerald Hospital in Darby, Pennsylvania, part of Trinity Health. The medical group on file is Vituity. Dmand AI also links Dr. Gejer to 1 more community health center and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Wendymarie Gejer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gejer practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercy Fitzgerald Hospital | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Wendymarie Gejer is one of 2,549 emergency medicine physicians in Pennsylvania
Emergency medicine is Dr. Gejer's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Gejer is licensed in Pennsylvania.
Specialties and state licenses
- Emergency medicine, PennsylvaniaPrimary
Emergency medicine physicians near Dr. Gejer
Counts of emergency medicine physicians 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. Wendymarie Gejer billed Medicare for 106 services in 2024
CMS data shows 106 Medicare services from Dr. Gejer across 4 procedure codes in 2024, for 108 Medicare patients. Medicare paid $12,742 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Gejer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1492024: 10629%
Dr. Gejer compared with the Pennsylvania median for emergency medicine physicians, 2024
- Dr. Gejer
- Pennsylvania median
- Medicare services
- 106vs 24356% below
- Medicare patients
- 108vs 23354% below
- Part D claims
- 11vs 4073% below
Medians across 2,501 emergency medicine physicians in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Gejer'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Gejer and other emergency medicine physicians in Pennsylvania.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Wendymarie Gejer treated 108 Medicare patients in 2024, average age 69
CMS counts 108 Medicare patients who saw Dr. Gejer in 2024. The largest group is 65 to 74, with 45 patients. 75% of them have high blood pressure, and 74% have high cholesterol. 56% are also on Medicaid. Their average risk score is 3.27, 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. Gejer's median patient age at 60, with 52% women.
Dr. Gejer's Medicare patients by age, 2024
Dr. Gejer's Medicare patients by sex, 2024
- Women5652%
- Men5248%
Chronic conditions among Dr. Gejer's Medicare patients, 2024
- High blood pressure75%
- High cholesterol74%
- Ischemic heart disease49%
- Arthritis48%
- Diabetes48%
- Chronic kidney disease44%
- Mood disorders38%
- Heart failure35%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gejer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women52%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Wendymarie Gejer wrote 56 Medicare Part D claims in 2024
In 2024, Dr. Gejer wrote 56 Medicare Part D claims for 45 patients. 93% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $39 in total drug cost. In 2019, CMS named 14 claims across 1 drug.
Dr. Gejer's Part D claims by kind of drug, 2024
- Generic52 claims93%
- Brand-name and other4 claims7%
Dr. Gejer's most prescribed drugs by claims, 2020
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. Gejer's Part D claims, 2024
- Antibiotics23%13 of 56 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, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 142020: 1121%
Drugs named by CMS: 1 in 2020, 1 in 2019.
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. Wendymarie Gejer received $181 in industry payments from 2016 to 2022
CMS Open Payments shows 9 general payments to Dr. Gejer from 3 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 100% of the total. Vapotherm Inc paid the most, $131.
General payments to Dr. Gejer by program year, 2016 to 2022
Companies that paid Dr. Gejer the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Wendymarie Gejer'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 services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| 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 and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (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 Dr. Wendymarie Gejer
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. Wendymarie Gejer's NPI number?
Dr. Wendymarie Gejer's NPI number is 1548296908. It was assigned on June 25, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Wendymarie Gejer?
Dr. Wendymarie Gejer is an emergency medicine physician in Darby, Pennsylvania. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Wendymarie Gejer practice?
Dr. Gejer practices at 1500 Lansdowne Ave, Darby, PA 19023. Dr. Gejer's primary practice is Mercy Fitzgerald Hospital in Darby, Pennsylvania, part of Trinity Health. Dmand AI also links Dr. Gejer to 1 community health center and 1 medical group.
What is Dr. Wendymarie Gejer's office phone number?
The practice phone on file for Dr. Gejer is (215) 237-4000.
What is Dr. Wendymarie Gejer's medical license number?
Dr. Gejer holds Pennsylvania license MD428175.
Which hospitals is Dr. Wendymarie Gejer affiliated with?
Dr. Gejer practices at Mercy Fitzgerald Hospital in Darby, Pennsylvania.
What medical group is Dr. Wendymarie Gejer part of?
Dr. Gejer is linked to Vituity. Dmand AI links Dr. Gejer to 1 more medical group.
Does Dr. Wendymarie Gejer accept Medicare?
Yes. CMS data shows Dr. Gejer billed Medicare for 106 services in 2024.
How many Medicare patients does Dr. Wendymarie Gejer see?
CMS counts 108 Medicare patients who saw Dr. Gejer in 2024, with an average age of 69.
What services does Dr. Wendymarie Gejer bill to Medicare?
In 2024, Dr. Gejer's most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and emergency department visit (99283).
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What drugs does Dr. Wendymarie Gejer prescribe most?
In 2020 Medicare Part D data, Dr. Gejer's most prescribed drugs by claims were Cephalexin.
Has Dr. Wendymarie Gejer received payments from drug or device companies?
CMS Open Payments shows $181 in general payments to Dr. Gejer from 3 companies from 2016 to 2022. The largest total came from Vapotherm Inc.
How long has Dr. Wendymarie Gejer been practicing?
Dr. Gejer graduated from medical school in 2003, 23 years ago.
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